- linaro-toolchain - lists.linaro.org

by Peter Maydell

Progress: * VIRT-65 [QEMU upstream maintainership] + lots of code review and other work for softfreeze + tracked down the bug that caused regressions running UEFI in a KVM guest with commit 823e1b3818f9b1, and sent out a fix thanks -- PMM

6 years, 10 months

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[ACTIVITY] 11-15 March 2019

by Christophe Lyon

== Progress == * FDPIC - Setting up new stm32f429-disc1 board. Boots OK with buildroot's default 4.11 kernel. Boot seems to fail starting with 4.13 (recent kernel needed to have FDPIC support) * GCC upstream validation: - reported a few regressions * GCC: - (GNU-99) ubsan / bare-metal. No progress. * misc (conf-calls, meetings, emails, ....) - reviewing infra script patches - adding qemu as a toolchain component supported by ABE. A bit convoluted because of manifest handling. == Next == FDPIC: - GCC: handle feedback on v4 patches - GDB: update patches - uclibc-ng: look at how to test fdpic mode with openadk - complete board setup Infra: - benchmarking jobs - add QEMU to list of components built by ABE

6 years, 10 months

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[ACTIVITY] 11 - 15 March 2019

by Diana Picus

== Progress == * Out of office 1 day (Thursday) * [Thumb GlobalISel] Bugfixes [LLVM-544] - The test-suite compiles and executes without failures (with fallback to DAG ISel) - We get some bus errors in the selfhost, which are due to unaligned 64-bit stores. Apparently when alignment checks were introduced in the legalizer, they were only used for types < 32 bits. Currently testing a patch to fix this oversight. * LLVM 8.0.0 Release for ARM & AArch64 [LLVM-526] - rc5 looks good on AArch64, ARM is still in progress (waited for LSS-570) == Plan == * Wrap up LLVM-544 * Upload rc5 when ARM is ready

6 years, 10 months

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[ACTIVITY] week ending 10 Mar 2019

by Richard Henderson

[VIRT-344 # ARMv8.5-MemTag, Memory Tagging Extension ] Posted v4, with system mode only. [VIRT-298 # ARMv8.4-CondM, Condition flag manipulation ] [VIRT-329 # ARMv8.5-CondM, Condition flag manipulation ] [VIRT-337 # ARMv8.0-SB, Speculation Barrier ] [VIRT-338 # ARMv8.0-PredInv, Prediction Invalidation ] [VIRT-330 # ARMv8.5-FRINT, Floating-point to integer ] All upstream. [VIRT-327 # Richard's upstream QEMU work ] Reviewed s390x vector patch set 3. Reviewed renesas rx patch set 3. Posted some patches and thoughts for https://bugs.linaro.org/show_bug.cgi?id=4274 Implemented extract2 as a tcg opcode. Minor hppa bug fixes. Lots more work on decodetree and A32+T32+T16 conversion. r~

6 years, 10 months

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[ACTIVITY] week ending 10 March 2019

by Peter Smith

- Intel CET review (Related to BTI support in LLD), raised issue of multiple PT_NOTE sections one per alignment https://reviews.llvm.org/D59120 , commented on command line options. - LLVM-523 redesigned the LLD handling of ARM exidx sections to centralise more of the Arm specific implementation details in one place. Hope to post upstream to get some movement on the review to add missing .ARM.exidx sections for chrome OS team. - LLVM-542 Managed to build most of the Zephyr examples for clang, shared patches to do so with zephyr tech lead. - Some research for some ABI topics. - Some thoughts for Linaro connect activities, started team calendar. Next week: - Start on my connect presentation

6 years, 10 months

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[ACTIVITY] Week 10

by Yvan Roux

o LLVM * Machine outliner: - Stack alignment and refactoring. - Start to prepare BKK19 talk * Bots babysitting * Built 8.0.0-rc4 binaries for x86 and ARM, got issues to start the job on D05 o Misc * Completed BKK19 and EuroLLVM trips. * Various meetings and discussions.

6 years, 10 months

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[ACTIVITY] 4-6 March 2019

by Christophe Lyon

== Progress == * FDPIC - (GNU-411) GDB: debugging problems with FDPIC support. Working on setup of an stm32 board. * GCC upstream validation: - reported a few regressions * GCC: - (GNU-99) ubsan / bare-metal. No progress. * misc (conf-calls, meetings, emails, ....) - reviewing infra script patches - debugging new benchmarking round-robin jobs == Next == FDPIC: - GCC: handle feedback on v4 patches - GDB: update patches - uclibc-ng: look at how to test fdpic mode with openadk - complete board setup Infra: - benchmarking jobs - add QEMU to list of components built by ABE Reply Forward

6 years, 10 months

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[ACTIVITY] week ending Mar. 10 2019

by Alex Bennée

QEMU Tooling ([VIRT-252]) ========================= QEMU plugin support ([VIRT-280]) - have an ostensibly working [working softmmu demacro branch] - wrote a test case for i386 but ran into issues with x86_64 Message-Id: <87va0vgad2.fsf(a)zen.linaroharston> - started looking at doing test case in Open Firmware (tests/prom-env-test.c) - discovered gprof reports break for out-of-tree builds [VIRT-280] https://projects.linaro.org/browse/VIRT-280 [working softmmu demacro branch] https://github.com/stsquad/qemu/tree/testing/enable-system-tcg-tests-v3-wit… Upstream Work ([VIRT-109]) ========================== - reviewed {PATCH} target/mips: Fix minor bug in FPU Message-Id: <1551978650-23207-1-git-send-email-mateja.marjanovic(a)rt-rk.com> - added 2p to a number of bike-shedding threads around build system - started pulling together [next testing branch] for softfreeze - annoying bug in ppc64 breaks gitlab CI mirror - tracked down [some historical QEMU performance regressions] - posted {RFC PATCH} docs/booting.rst: start documenting the boot process Message-Id: <20190308211557.22589-1-alex.bennee(a)linaro.org> [VIRT-109] https://projects.linaro.org/browse/VIRT-109 [next testing branch] https://github.com/stsquad/qemu/tree/testing/next [some historical QEMU performance regressions] https://diasp.eu/posts/ec86de10240e01376f734061862b8e7b Other ===== - handling feedback/questions for [GSoC/Outreachy project] [GSoC/Outreachy project] https://wiki.qemu.org/Internships/ProjectIdeas/TCGCodeQuality Completed Reviews [4/4] ======================= {PATCH v2 00/11} pflash: Fixes and cleanups Message-Id: <20190226193408.23862-5-armbru(a)redhat.com> - CLOSING NOTE [2019-03-01 Fri 16:59] Looks like a good cleanup {PATCH v3 00/14} pflash: Fixes and cleanups Message-Id: <20190307130323.9353-1-armbru(a)redhat.com> - CLOSING NOTE [2019-03-08 Fri 17:07] Looks good {PATCH v3 00/12} Enable build and install of our rST docs Message-Id: <20190305172139.32662-1-peter.maydell(a)linaro.org> - CLOSING NOTE [2019-03-08 Fri 17:08] Now merged, but broke Travis CI {Qemu-devel} {PATCH v6 00/51} Support Kconfig in QEMU Message-Id: <1549562254-41157-1-git-send-email-pbonzini(a)redhat.com> - CLOSING NOTE [2019-03-08 Fri 17:08] Now merged Absences ======== - Connect BKK19 (1-5th April 2019) - holiday after Connect Current Review Queue ==================== * {RFC v2 00/38} Plugin support Message-Id: <20181209193749.12277-1-cota(a)braap.org> * {PATCH+RFC 0/6} target/arm: Define cortex-a{73,75,76} Message-Id: <20190223023957.18865-1-richard.henderson(a)linaro.org> * {Qemu-devel} {PATCH 0/9} tcg: Add tcg_gen_extract2_{i32,i64} Message-Id: <20190307144126.31847-1-richard.henderson(a)linaro.org> * {Qemu-devel} {RFC PATCH 0/6} pc: Support firmware configuration with -blockdev Message-Id: <20190225183757.27378-1-armbru(a)redhat.com> * {Qemu-devel} {PATCH 00/23} tests/tcg/xtensa: conditionalize xtensa tests Message-Id: <20190219061111.10231-1-jcmvbkbc(a)gmail.com> * {PATCH 00/10} Rework debug exception handling code Message-Id: <20190301132809.24653-7-will.deacon(a)arm.com> -- Alex Bennée

6 years, 10 months

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[ACTIVITY] report week ending 8 Mar

by Peter Maydell

Progress: * VIRT-65 [QEMU upstream maintainership] + code review - add watchdog device to stellaris boards - bcm2836 "local timer" device - RTH's rolled-up patchset for SB, PredInv, CondM, FRINT extensions - Eric's patchset to allow the 'virt' board to have more than 255GB of RAM - a patchset to add a "generic nommu" board for NiosII + assembled a target-arm pull request for softfreeze + fixed some minor issues with the "build sphinx docs" patches, and got them into master (and then fixed some more minor issues...) * VIRT-268 [QEMU support for dual-core Cortex-M Musca board] + progress on M-profile floating point: - finished first draft of changes to exception handling code - this is now on hold as we are into softfreeze for QEMU 4.0 and other work for that release will take priority for the next few weeks thanks -- PMM

6 years, 10 months

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[ACTIVITY] 4 March - 8 March 2018

by Prathamesh Kulkarni

== This Week == * PR88839 - Poor implementation of blend like permutes (4/10) - Addressing suggestions by Richard on patch * GCC vectorizer (2/10) - Background reading * Validation (1/10) - Added more bootstrap configs for tcwg_gnu job - Committed patch to abe to enable bootstrap implicitly when buildconfig is set. - Started tracking for tcwg_gnu ci job (init_configuration == false). * Public holiday (2/10) * Misc (1/10) - Meetings == Next Week == - Continue ongoing tasks

6 years, 10 months

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[ACTIVITY] Week 09

by Yvan Roux

o LLVM * Back to machine outliner after vacation - Rebased on upstream master branch - Working on stack alignment and refactoring. o Misc * Preparing BKK19 and EuroLLVM trips. * Various meetings and discussions.

6 years, 10 months

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[ACTIVITY] 25 February - 1 March 2019

by Kugan Vivekanandarajah

* PR88838 - I have a patch which solves this. * adds iv in Pmode but compare_type in 32bit - It exposes a latent bug in fwprop in regression testing - Looking into it == Plan == * Complete above PRs * Look at GDB BZ #21221 - gdb hangs while stepping an empty loop

6 years, 10 months

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[ACTIVITY] week ending 3 Mar 2019

by Richard Henderson

Progress: [VIRT-274 # ARMv8.2-FHM, Floating-point multiplication variant ] Now upstream. [VIRT-298 # ARMv8.4-CondM, Condition flag manipulation ] [VIRT-329 # ARMv8.5-CondM, Condition flag manipulation ] [VIRT-337 # ARMv8.0-SB, Speculation Barrier ] [VIRT-338 # ARMv8.0-PredInv, Prediction Invalidation ] [VIRT-330 # ARMv8.5-FRINT, Floating-point to integer ] Posted an omnibus of SB+PredInv+CondM+FRINT that I have labeled "v3", as 3 > any individual revision previously used. [VIRT-327 # Richard's upstream QEMU work ] Reviewed s390x vector patch set v2. Implemented pattern groups in decodetree. Prototyped A32 conversion to decodetree; started a second revision that incorporates T32. Started looking at https://bugs.linaro.org/show_bug.cgi?id=4274 I can swizzle things around by changing the group name from "cp_regs" to the predefined "system", but somehow those regs are *also* registered with "general". Which means the undesired behaviour by which "info regs" prints all of the system registers still exists. r~

6 years, 11 months

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[ACTIVITY] report week ending 1 Mar

by Peter Maydell

Progress: * VIRT-65 [QEMU upstream maintainership] + upstream code review and pull request handling + respin of patchset to enable building our Sphinx RST documentation * VIRT-268 [QEMU support for dual-core Cortex-M Musca board] + progress on M-profile floating point: - have written code to handle the smaller parts of the feature (insn decode, registers, etc) - started on changes to exception handling - lazy save/restore still to do after that * a lot of admin/meeting stuff this week * softfreeze now less than two weeks away, need to focus on what needs to be done before then... thanks -- PMM

6 years, 11 months

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[ACTIVITY] week ending March 1st 2019

by Peter Smith

[LLVM-494] LLD is now turned on for clang linux kernel defconfig builds [LLVM-542] Worked out how to get Zephyr (Linaro's choice of IoT embedded OS) compiling with clang. Looks like it is going to be difficult to get linking with clang/lld so I've used the gcc/ld.bfd for now. Linux kernel sent a draft patch to try and alleviate some object ordering problems that arise when linking the linux kernel with LTO. [Misc] Intel patch to add CET to LLD https://reviews.llvm.org/D58102 I mention this as this is related to BTI and CFI and .note.gnu.property sections. There has been some pushback to the use of .note.gnu.property sections, and in Intel's case their 2 level PLT scheme although it seems like as this has been mitigated by the presence of this option in gcc for some time. I have noticed that we tend to do design of a feature in one community (LLVM, GNU) and then attempt to win over the other one with leverage that the other community supports it. We may need to cast our early feedback net a bit wider to mitigate the chance that one of the communities blocks one of our features. There was an interesting RFC on a linker feature for improving code-size for mobile phones http://lists.llvm.org/pipermail/llvm-dev/2019-February/130583.html in essence an application is developed with loadable features implemented in DSOs loaded by dlopen. The entry points of the DSO are recorded, then all the input objects are given to the static linker which then performs LTO and creates stripped down DSOs that must be loaded at a specific offset from the application (shrinking them but losing the shared part of DSO).

6 years, 11 months

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[ACTIVITY] week ending Mar. 3 2019

by Alex Bennée

QEMU Tooling ([VIRT-252]) ========================= QEMU plugin support ([VIRT-280]) - posted {PATCH v3 0/3} softmmu demacro Message-Id: <20190215143115.28777-1-alex.bennee(a)linaro.org> - looks like there is still a bug on x86 TCG Message-Id: <20190219182528.GA19925@flamenco> - started v4 re-base, but realised we need better testing so - posted {PATCH v2 00/16} Enabling tcg/tests for cris and system mode xtensa & arm Message-Id: <c3a65d4b-8720-2957-1394-032823a78760(a)redhat.com> - started writing an i386 test case (x86 exercises more of the softmmu edge cases) - started reviewing v3 of plugin patches [VIRT-280] https://projects.linaro.org/browse/VIRT-280 Upstream Work ([VIRT-109]) ========================== - posted {PATCH v5} hw/block: better reporting on pflash backing file mismatch Message-Id: <20190227111347.15063-1-alex.bennee(a)linaro.org> - tested the possible ahci/migrate fix Message-Id: <20190227121052.GD2602@work-vm> for hang identified last week - posted {PULL 0/7} softfloat updates, mostly for s390x Message-Id: <20190226141201.16999-1-alex.bennee(a)linaro.org> - posted {PATCH v1 0/6} current state of gitdm/next Message-Id: <20190226164656.mhasc4xxfjf34hns@function> - and follow-up {PATCH v2 0/5} gitdm/next updates Message-Id: <20190301100310.22345-4-alex.bennee(a)linaro.org> - added some stats to VIRT-26/VIRT-326 for possible KPI use [VIRT-109] https://projects.linaro.org/browse/VIRT-109 Other ===== - more drafting of Connect talk Completed Reviews [1/1] ======================= {PATCH v2 00/11} pflash: Fixes and cleanups Message-Id: <20190226193408.23862-5-armbru(a)redhat.com> - CLOSING NOTE [2019-03-01 Fri 16:59] Looks like a good cleanup Absences ======== - Connect BKK19 (1-5th April 2019) - holiday after Connect Current Review Queue ==================== * {RFC v2 00/38} Plugin support Message-Id: <20181209193749.12277-1-cota(a)braap.org> * {Qemu-devel} {PATCH 00/23} tests/tcg/xtensa: conditionalize xtensa tests Message-Id: <20190219061111.10231-1-jcmvbkbc(a)gmail.com> * {PATCH 00/10} Rework debug exception handling code Message-Id: <20190301132809.24653-7-will.deacon(a)arm.com> * {PATCH v2 00/11} Enable build and install of our rST docs Message-Id: <20190228145624.24885-1-peter.maydell(a)linaro.org> * {PATCH+RFC 0/6} target/arm: Define cortex-a{73,75,76} Message-Id: <20190223023957.18865-1-richard.henderson(a)linaro.org> * {PATCH v3 00/20} Acceptance Tests: target architecture support Message-Id: <20190221005753.27955-1-crosa(a)redhat.com> -- Alex Bennée

6 years, 11 months

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[ACTIVITY] 25 February - 1 March 2019

by Diana Picus

== Progress == * [Thumb GlobalISel] Support global variables [LLVM-540] - Committed upstream * [Thumb GlobalISel] Support G_CTLZ [LLVM-543] - Committed upstream - We now have the same level of support for Thumb2 and ARM mode * LLVM 8.0.0 Release for ARM & AArch64 [LLVM-526] - Tested and uploaded rc3 == Plan == * Out of office between 4 - 8 March (i.e. next week) * GlobalISel bugfixing and cleanup (both ARM and Thumb2)

6 years, 11 months

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[ACTIVITY] 18-22 February 2019

by Kugan Vivekanandarajah

== Progress == * PR88836 - I have a patch (for backend and CSE) which now passes bootstrap and regression except for one testcase failure (which looks like a pattern issue). Looking into it. * Look at GDB BZ #21221 - gdb hangs while stepping an empty loop - Not convinced that it is a gcc issue. Looking into the dwarf specification. * PR88838 - Looking at it. - Also familiarising with auto-vectorisation of SVE == Plan == * Complete above PRs * Look at GDB BZ #21221 - gdb hangs while stepping an empty loop

6 years, 11 months

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[ACTIVITY] week ending 24 Feb 2019

by Richard Henderson

[VIRT-242 # ARMv8.3-JSCVT ] Merged to master. [VIRT-274 # ARMv8.2-FHM, Floating-point multiplication variant ] Posted v5. [VIRT-298 # ARMv8.4-CondM, Condition flag manipulation ] [VIRT-329 # ARMv8.5-CondM, Condition flag manipulation ] Started v4 and v5 extensions concurrently. Posted v1. [VIRT-337 # ARMv8.0-SB, Speculation Barrier ] Posted v1. [VIRT-338 # ARMv8.0-PredInv, Prediction Invalidation ] Posted v1. [VIRT-330 # ARMv8.5-FRINT, Floating-point to integer ] Posted v1. [VIRT-327 # Richard's upstream QEMU work ] Reviewed cpu-lock patch set. Ready to merge, I think. Fixed a bug with the env->hflags patch set wrt aa32. Looking at a reported TB chaining bug affecting HPPA. Started adding cortex-a{73,75,76}, but ran into issues. r~

6 years, 11 months

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[ACTIVITY] week ending Feb. 24 2019

by Alex Bennée

QEMU Tooling ([VIRT-252]) ========================= QEMU plugin support ([VIRT-280]) - posted {PATCH v3 0/3} softmmu demacro Message-Id: <20190215143115.28777-1-alex.bennee(a)linaro.org> - looks like there is still a bug on x86 TCG Message-Id: <20190219182528.GA19925@flamenco> - awaiting v3 of plugin patches :todo [VIRT-280] https://projects.linaro.org/browse/VIRT-280 Upstream Work ([VIRT-109]) ========================== - prepared {PATCH v1 0/8} testing/next Message-Id: <20190220172811.10588-1-alex.bennee(a)linaro.org> - spent time trying to replicate some CI failures - reproduced one, patched around {PATCH} tests/cdrom-test: only include isapc cdrom test when g_test_slow() Message-Id: <20190221134101.13903-1-alex.bennee(a)linaro.org> - finally reproduced (i386|x86_64)/ahci/migrate/sanity under gprof - handed over a core dump to migration people to fix - finally posted {PULL 0/9} various Travis and Docker fixes, add gitlab CI Message-Id: <20190222095421.28938-1-alex.bennee(a)linaro.org> - posted {PATCH v2} hw/block: report when pflash backing file isn't aligned Message-Id: <20190215122808.22301-1-alex.bennee(a)linaro.org> - further discussion has lead to further patches - also filled [Debian bug] - posted {PATCH v3} hw/block: better reporting on pflash backing file mismatch Message-Id: <20190221184857.22434-1-alex.bennee(a)linaro.org> - posted {PATCH v1 0/6} fpu/next, mostly bits s390x tcg will need Message-Id: <20190222204500.24434-1-alex.bennee(a)linaro.org> [VIRT-109] https://projects.linaro.org/browse/VIRT-109 [Debian bug] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=922979 Other ===== - started drafting structure for Connect talk Completed Reviews [5/5] ======================= {PATCH 0/4} target/arm: Reduce overhead of cpu_get_tb_cpu_state Message-Id: <20190214040652.4811-1-richard.henderson(a)linaro.org> - CLOSING NOTE [2019-02-20 Wed 10:33] Found a bug with EL2 transitions {PATCH v2 0/3} target/arm: Reduce overhead of cpu_get_tb_cpu_state Message-Id: <20190219233421.388-1-richard.henderson(a)linaro.org> - CLOSING NOTE [2019-02-20 Wed 10:34] Looking good, nice performance boost. {PATCH 00/10} pflash: Fixes and cleanups Message-Id: <20190218125615.18970-1-armbru(a)redhat.com> - CLOSING NOTE [2019-02-22 Fri 15:24] Much needed de-weeding {Qemu-devel} {PATCH} hw/arm/armsse: Make 0x5... alias region work for per-CPU devices Message-Id: <20190215180500.6906-1-peter.maydell(a)linaro.org> - CLOSING NOTE [2019-02-22 Fri 15:29] Didn't manage to fully test through, building trusted firmware is hard {PATCH v3 0/3} target/arm: Reduce overhead of cpu_get_tb_cpu_state Message-Id: <20190222024106.9167-1-richard.henderson(a)linaro.org> - CLOSING NOTE [2019-02-22 Fri 15:26] Re-tested on armhf Absences ======== - Connect BKK19 (1-5th April 2019) - holiday after Connect Current Review Queue ==================== * {PATCH v3 00/20} Acceptance Tests: target architecture support Message-Id: <20190221005753.27955-1-crosa(a)redhat.com> * {RFC v2 00/38} Plugin support Message-Id: <20181209193749.12277-1-cota(a)braap.org> * {PATCH v5 00/26} KVM: arm64: SVE guest support Message-Id: <1550519559-15915-1-git-send-email-Dave.Martin(a)arm.com> * {Qemu-devel} {PATCH v6 00/51} Support Kconfig in QEMU Message-Id: <1549562254-41157-1-git-send-email-pbonzini(a)redhat.com> * {PATCH 0/6} Initial support for CVADP Message-Id: <1549459868-45992-1-git-send-email-andrew.murray(a)arm.com> * {Qemu-devel} {PATCH v6 00/49} linux-user: Split do_syscall Message-Id: <20190118213122.22865-1-richard.henderson(a)linaro.org> -- Alex Bennée

6 years, 11 months

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[ACTIVITY] Week ending Friday 22nd February 2019

by Peter Smith

[LLVM-158] Monitor and maintain buildbots - Some work to track down a faulty msan test on AArch64 that was intermittently failing. - Spent some time trying to reproduce an intermittent failure in libfuzzer. [LLVM-523] Synthesise EXIDX_CANTUNWIND entries for sections without tables. - Not getting much response from upstream beyond a vague suggestion to rewrite the whole of .ARM.exidx handling as a single custom section. I may have to go down this path to get the feature accepted, even if it is to show that it is a bad idea. [LLVM-496] LLD in linux kernel - Submitted patch to ignore -p (--no-pipeline-knowledge) which is used by the AArch32 linux kernel. - Submitted patch to integrate LLD in TCWG kernel regression test. - Learned, the hard way, about how the linux kernel build system works and how to pass extra flags. Reviews: Spent an awful long time looking at how clang passes options to GNU as to try and match the existing clang defaults. I'm not sure I've seen anything much more confusing than tracing through target features from clang to llvm and back again.

6 years, 11 months

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todo fdpic stm32

by Christophe Lyon

re-essayer de flash le kernel sur la board (mais est-ce possible vu qu'il semble plus gros que la flash?) $ openocd -f /usr/share/openocd/scripts/board/stm32f429discovery.cfg -f flash-kernel.cfg [...] Info : device id = 0x20016419 Info : flash size = 2048kbytes Info : Dual Bank 2048 kiB STM32F42x/43x/469/479 found Warn : no flash bank found for address 0 wrote 0 bytes from file /home/lyon/src/kernel/linux/arch/arm/boot/xipImage in 0.007352s (0.000 KiB/s) ** Programming Finished ** demander de l'aide aux gens de ST? re-essayer avec un openocd plus recent

6 years, 11 months

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[ACTIVITY] 18-22 February 2019

by Christophe Lyon

== Progress == * FDPIC - (GNU-411) GDB: debugging problems with FDPIC support. Trying to setup a stm32 board to avoid problems with unsupported configurations mix between kernel and qemu. * GCC upstream validation: - reported a few regressions * GCC: - (GNU-99) ubsan / bare-metal. No progress. * misc (conf-calls, meetings, emails, ....) - reviewing infra script patches - debugging new benchmarking round-robin jobs == Next == Holidays, back on March 4th == Next-next == FDPIC: - GCC: handle feedback on v4 patches - GDB: update patches - uclibc-ng: look at how to test fdpic mode with openadk - complete board setup Infra: - benchmarking jobs

6 years, 11 months

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[ACTIVITY] report week ending 22 Feb

by Peter Maydell

Progress: * VIRT-65 [QEMU upstream maintainership] + patch review: RTH's JSConv/FHM patchset + sent another arm pull request * VIRT-268 [QEMU support for dual-core Cortex-M Musca board] + Implemented and wired up the SSE-200 Message Handling Units + Implemented the mechanism by which a guest can power up CPU 1 + Sent out patches for these; this can run the Zephyr MHU/dualcore testcase + Started looking at implementing floating point support for M profile thanks -- PMM

6 years, 11 months

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[ACTIVITY] 18 - 22 February 2019

by Diana Picus

== Progress == * [Thumb GlobalISel] Support control flow [LLVM-530] - Committed upstream * [Thumb GlobalISel] Support accessing the stack [LLVM-527] - Committed upstream * [Thumb GlobalISel] Support floating point [LLVM-531] - Committed upstream * LLVM 8.0.0 Release for ARM & AArch64 [LLVM-526] - Investigated the release blocker from rc1, turned out to be an issue with the filesystem used in the container on the APMs - Changed the release job to run on the D05 instead, where we use a different container [LLVM-539] - Testing still in progress == Plan == * [Thumb GlobalISel] Support global variables [LLVM-540] * Out of office between 4 - 8 March

6 years, 11 months

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[ACTIVITY] 11-15 February 2019

by Kugan Vivekanandarajah

== Progress == * PR88834: * Have a patch for ivopt and backend that generates the required addressing mode and code. Still need cleanup and some improvements. * PR88836 Made the required changes to the backend. CSE is still not happening. Looked at CSE in detail and made few changes but still need more work. The issues are: - Parallel rtx with one setting a register and other using it will be immediately invalidated as the invalidation happens after processing both. - If CSE is such that one instruction is with one constant operand and other with constant in a register, it will not be detected - VEC_DUPLICATE is not handled. - Not sure any other pass like GCSE is a better option == Plan == * Complete above PRs * Look at GDB BZ #21221 - gdb hangs while stepping an empty loop

6 years, 11 months

1
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[ACTIVITY] week ending 17 Feb 2019

by Richard Henderson

[VIRT-68 # QEMU should implement tagged pointer support ] Closed. We merged these patches on Feb 5. [VIRT-242 # ARMv8.3-JSCVT ] Sent v4. [VIRT-274 # ARMv8.2-FHM, Floating-point multiplication variant ] Sent v2. [VIRT-344 # ARMv8.5-MemTag, Memory Tagging Extension ] Sent v3 vs 00eac6. [VIRT-327 # Richard's upstream QEMU work ] Reviewed s390 floating point extension feature. Fixed AT_PLATFORM for arm-linux-user and aarch64_be-linux-user. Implemented missing float_round_to_odd functionality. r~

6 years, 11 months

1
0
0 0

[ACTIVITY] week ending Feb. 17 2019

by Alex Bennée

QEMU Tooling ([VIRT-252]) ========================= [VIRT-280] https://projects.linaro.org/browse/VIRT-280 QEMU plugin support ([VIRT-280]) - posted {PATCH v3 0/3} softmmu demacro Message-Id: <20190215143115.28777-1-alex.bennee(a)linaro.org> - awaiting v3 of plugin patches :todo Upstream Work ([VIRT-109]) ========================== - posted {PULL 00/18} testing updates: travis/cirrus/vm-test/binfmt Message-Id: <20190211130507.8710-1-alex.bennee(a)linaro.org> - posted {PATCH v2 0/6} HWCAP_CPUID registers for aarch64 Message-Id: <20190205190224.2198-1-alex.bennee(a)linaro.org> - fixes pulled into target-arm.next - test case held back due to compiler version needed, need to respin - posted {PATCH v2} hw/block: report when pflash backing file isn't aligned Message-Id: <20190215122808.22301-1-alex.bennee(a)linaro.org> - prompted further discussion on best solution as -pflash fails in ways -bios doesn't [VIRT-109] https://projects.linaro.org/browse/VIRT-109 Other ===== - Spent time building cross-tools for Debian/ARM64 - sent {PATCH} binutils: enable s390x/ppc64el on arm64 hosts Message-Id: <20190212140851.22478-1-alex.bennee(a)linaro.org> - Discussion on [Debian #921458] (buster apt source qemu) - upstream consensus seems to be it is acceptable - apt-get build-dep --arch-only qemu [Debian #921458] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=921458 Completed Reviews [1/1] ======================= {RFC} arm: Allow system registers for KVM guests to be changed by QEMU code Message-Id: <20181206151401.13455-1-peter.maydell(a)linaro.org> - CLOSING NOTE [2019-02-13 Wed 16:30] Looks fine, although we still need to keep squashing single-step while debug is on Absences ======== - 15-18th Feb (long w/e) - Connect BKK19 (1-5th April 2019) - holiday after Connect Current Review Queue ==================== * {PATCH 0/4} target/arm: Reduce overhead of cpu_get_tb_cpu_state Message-Id: <20190214040652.4811-1-richard.henderson(a)linaro.org> * {RFC v2 00/38} Plugin support Message-Id: <20181209193749.12277-1-cota(a)braap.org> * {Qemu-devel} {PATCH v6 00/49} linux-user: Split do_syscall Message-Id: <20190118213122.22865-1-richard.henderson(a)linaro.org> * {PATCH 0/5} target/mips: Add MSA ASE tests Message-Id: <1550001205-7883-1-git-send-email-aleksandar.markovic(a)rt-rk.com> * {Qemu-arm} {PATCH 00/25} Kconfig dependencies for ARM machines Message-Id: <1549694366-1284-1-git-send-email-thuth(a)redhat.com> * {RFC QEMU v2 0/2} arm/virt: Account for guest pause time Message-Id: <1543352837-21529-1-git-send-email-bijan.mottahedeh(a)oracle.com> -- Alex Bennée

6 years, 11 months

1
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[ACTIVITY] 11-15 February 2019

by Christophe Lyon

== Progress == * FDPIC - (GNU-411) GDB: debugging problems with FDPIC support. * GCC upstream validation: - reported a few regressions * GCC: - (GNU-99) ubsan / bare-metal. No progress. * misc (conf-calls, meetings, emails, ....) - reviewing infra script patches - debugging new benchmarking round-robin jobs == Next == FDPIC: - GCC: handle feedback on v4 patches - GDB: update patches - uclibc-ng: look at how to test fdpic mode with openadk Infra: - benchmarking jobs

6 years, 11 months

1
0
0 0

[ACTIVITY] report week ending 15 Feb

by Peter Maydell

Progress: * VIRT-65 [QEMU upstream maintainership] + usual code review/maintainer work + Coverity Scan is back up; triaged the issues that it found + updated OSX "handle Mojave" patchset to actually wire up events correctly; sent v2 * VIRT-268 [QEMU support for dual-core Cortex-M Musca board] + Finished, tested and sent out the initial Musca board model patches for review + Fixed a handful of random bugs identified in the course of doing this and testing it with various guests + Investigated why tip-of-trunk ARM-TFM stopped working on the mps2-an521 model; turned out to be a QEMU bug which I have sent out a patch for thanks -- PMM

6 years, 11 months

1
0
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[ACTIVITY] 11 - 15 February 2019

by Diana Picus

== Progress == * [Thumb GlobalISel] Support G_SELECT [LLVM-529] - Committed upstream * [Thumb GlobalISel] Support control flow [LLVM-530] - Committed support for branches - Support for PHI in progress * LLVM 8.0.0 Release for ARM & AArch64 [LLVM-526] - rc2 uploaded, no changes from rc1 on our side * Use new version of GCC on buildbots [LLVM-515] - Restarted the buildbots, they are running GCC 7 now * Buildbot babysitting [LLVM-158] - Reproduced a couple of failures, ran a pre-commit for one of them == Plan == * Continue LLVM-526 and LLVM-530

6 years, 11 months

1
0
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[ACTIVITY] 11 February - 15 February 2019

by Prathamesh Kulkarni

== This Week == * SVE ACLE (4/10) - Committed svlsl patch to branch * SVE (3/10) - Studying GCC's vectorizer - Started looking at PR88839 * Validation (2/10) - GNU-156: Working on tcwg_gnu CI job. * Misc (1/10) - Meetings - Filed PR89332 in GCC bugzilla. == Next Week == - Continue ongoing tasks

6 years, 11 months

1
0
0 0

[ACTIVITY] Week 06

by Yvan Roux

o Still part time at university. o LLVM * Still working on machine outliner RFC comments. o Misc * Various meetings and discussions.

6 years, 11 months

1
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0 0

[ACTIVITY] week ending 10 Feb 2019

by Richard Henderson

[VIRT-242 # ARMv8.3-JSCVT ] Posted v1 & v2. [VIRT-339 # ARMv8.5-BTI, Branch Target Identification ] Posted v3. [VIRT-327 # Richard's upstream QEMU work ] Posted v3 of arm tcg vector improvements. Now uses ssadd & usadd tcg opcodes from AdvSIMD and not just SVE. This would have made it easier to find a bug in my previous tcg backend patches. Found the last two bugs in a conversion of target/hppa to decodetree, and posted the patch set. Sent pull request for some other queued hppa patches. Fix a minor RISU bug wrt SVE. [LoAAS] Travel to/from Cambridge for 2 days of Linux on ARM Summit. r~

6 years, 11 months

1
1
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[ACTIVITY] 4-8 February 2019

by Christophe Lyon

== Progress == * FDPIC - (GNU-411) GDB: debugging problems with FDPIC support. * GCC upstream validation: - reported a few regressions, helping test patches - dealing with some random results, still * GCC: - (GNU-99) rebased ubsan / bare-metal patches. No progress. * misc (conf-calls, meetings, emails, ....) - reviewing/submitted infra script patches - debugging new benchmarking round-robin jobs == Next == FDPIC: - GCC: handle feedback on v4 patches - GDB: update patches - uclibc-ng: look at how to test fdpic mode with openadk Infra: - benchmarking jobs

6 years, 11 months

1
0
0 0

[ACTIVITY] week ending Feb. 10 2019

by Alex Bennée

QEMU Tooling ([VIRT-252]) ========================= QEMU plugin support ([VIRT-280]) - re-based [ldst demacro to v3] - recollect stats to see if slowdown still there :todo - awaiting v3 of plugin patches [VIRT-280] https://projects.linaro.org/browse/VIRT-280 [ldst demacro to v3] https://github.com/stsquad/qemu/tree/ldst/demacrofy-v3 Upstream Work ([VIRT-109]) ========================== - need to finish the re-work of [system test and misc arch] tests :todo - will be useful for test cases for plugins - also more test cases queued up for system tests - debugged an occasional failure in pauth-1 test case - expected given PAuth architecture, test needs tightening up - posted {PATCH v1 0/4} HWCAP_CPUID registers for aarch64 Message-Id: <20190128173940.25813-1-alex.bennee(a)linaro.org> - posted {PATCH v2 0/6} HWCAP_CPUID registers for aarch64 Message-Id: <20190205190224.2198-1-alex.bennee(a)linaro.org> - posted {PATCH v2 00/16} current testing/next queue (with build fixes) Message-Id: <20190207183744.5054-1-alex.bennee(a)linaro.org> - this fixes regression of check-tcg but also - discovered the Debian Buster's QEMU arm64 packaging is broken - spent time trying to able to join #debian's IRC channels (aws hosts banned!) - tried to revive the cross-tools packaging I'd started with Wookey last Connect [VIRT-109] https://projects.linaro.org/browse/VIRT-109 [the linux-user multiarch but it is not ready yet] https://github.com/stsquad/qemu/tree/testing/next-with-linux-user [system test and misc arch] https://github.com/stsquad/qemu/tree/testing/enable-system-tcg-tests-v2 Other ===== - Connect talk has been accepted, Friday 8.30 slot Completed Reviews [1/1] ======================= {Qemu-arm} {PATCH v6 00/73} per-CPU locks Message-Id: <20190130004811.27372-1-cota(a)braap.org> - CLOSING NOTE [2019-02-08 Fri 17:19] Looks good, improves MTTCG scalability to 10-12 core now ;-) Absences ======== - 15-18th Feb (long w/e) - Connect BKK19 (1-5th April 2019) - holiday after Connect Current Review Queue ==================== * {RFC} arm: Allow system registers for KVM guests to be changed by QEMU code Message-Id: <20181206151401.13455-1-peter.maydell(a)linaro.org> * {RFC v2 00/38} Plugin support Message-Id: <20181209193749.12277-1-cota(a)braap.org> * {RFC QEMU v2 0/2} arm/virt: Account for guest pause time Message-Id: <1543352837-21529-1-git-send-email-bijan.mottahedeh(a)oracle.com> * {PATCH v12 00/25} Fixing record/replay and adding reverse debugging Message-Id: <154935478086.7509.4349987292919289245.stgit@pasha-VirtualBox> * {PATCH v2 00/18} OpenBSD: Enable qtesting Message-Id: <20190129175403.18017-1-philmd(a)redhat.com> * {PATCH v11 00/25} Fixing record/replay and adding reverse debugging Message-Id: <20190131131520.23264.75724.stgit@pasha-VirtualBox> -- Alex Bennée

6 years, 11 months

1
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[ACTIVITY] report week ending 8 Feb

by Peter Smith

Fosdem: - Presented on LLD performance at LLVM devroom https://fosdem.org/2019/schedule/track/llvm/ - Other interesting presentations from the devroom include: -- Compiling the Linux kernel with LLVM tools -- Lessons in TableGen LLVM-523 LLD should synthesise .cantunwind .ARM.exidx sections for sections without them - Implementation and regression tests done. Will do a bit more testing and post upstream on Monday. LLVM-521 Taking the address of an ifunc in LLD - Spent some time reviewing upstream patch that should fix the remaining LLD ifunc address equivalence problems for all Targets.

6 years, 11 months

1
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[ACTIVITY] report week ending 8 Feb

by Peter Maydell

Progress: * VIRT-65 [QEMU upstream maintainership] + reviewed RTH's patchsets for BTI and MemTag support * VIRT-268 [QEMU support for dual-core Cortex-M Musca board] + Implemented a first pass at a Musca board model, which has the PPC and MPC infrastructure, plus RAM, and ROM for the flash; need to add at least the UARTs and do some testing * misc + sorting out travel arrangements, visa, etc for Connect + kicked off a discussion on whether there are aspects of QEMU's role as the userspace component of a KVM VM that Linaro should be putting more effort/attention into thanks -- PMM

6 years, 11 months

1
0
0 0

[ACTIVITY] 4 - 8 February 2019

by Diana Picus

== Progress == * Out of office on Monday * [Thumb GlobalISel] Support G_GEP [LLVM-532] - Committed upstream * [Thumb GlobalISel] Support G_ICMP [LLVM-528] - Committed upstream * [Thumb GlobalISel] Support G_SELECT [LLVM-529] - Almost ready to commit * LLVM 8.0.0 Release for ARM & AArch64 [LLVM-526] - rc2 in progress * Minor changes to Jenkins jobs [LLVM-533] - TCWG Regression Detection job: launch LLVM 7.0.0 release on xenial containers (as opposed to 6.0.0 on trusty) - Release job: forced parallelism to 3 on the TK1s, to reduce some of the swapping; also posted a patch upstream to allow us to use ninja, so we can limit only the number of link jobs (like we do on the buildbots) == Plan == * Continue LLVM-526 and LLVM-529 * Use new version of GCC on buildbots [LLVM-515] - Restart the buildbots so they begin using GCC 7

6 years, 11 months

1
0
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[ACTIVITY] 4 February - 8 February 2019

by Prathamesh Kulkarni

== This Week == * SVE ACLE (4/10) - svlsl * Getting familiar with GCC's vectorizer (4/10) * Validation (1/10) - Upstream monitoring job * Misc (1/10) - Meetings == Next Week == - Continue ongoing tasks

6 years, 11 months

1
0
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[BUG REPORT] The bare-metal toolchains for aarch64 cannot link objects successfully

by Junling Zheng

Hi, I found that the bare-metal toolchains for aarch64 from Linaro could not seem to link objects to generate executable files successfully. ==================== Toolchain: https://releases.linaro.org/components/toolchain/binaries/7.3-2018.05/aarch… ==================== Testcase: > cat test.c #include <stdio.h> int main(int argc, char* argv[]) { printf("Hello World!\n"); return 0; } > aarch64-elf-gcc -o test test.c .../gcc-linaro-7.3.1-2018.05-x86_64_aarch64-elf/bin/../aarch64-elf/libc/usr/lib/crt0.o: In function `_start': /home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-elf/snapshots/newlib.git~linaro-local~linaro-newlib-2_5_0/libgloss/aarch64/crt0.S:148: undefined reference to `initialise_monitor_handles' .../gcc-linaro-7.3.1-2018.05-x86_64_aarch64-elf/bin/../aarch64-elf/libc/usr/lib/libc.a(lib_a-exit.o): In function `exit': /home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-elf/snapshots/newlib.git~linaro-local~linaro-newlib-2_5_0/newlib/libc/stdlib/exit.c:70: undefined reference to `_exit' .../gcc-linaro-7.3.1-2018.05-x86_64_aarch64-elf/bin/../aarch64-elf/libc/usr/lib/libc.a(lib_a-sbrkr.o): In function `_sbrk_r': /home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-elf/snapshots/newlib.git~linaro-local~linaro-newlib-2_5_0/newlib/libc/reent/sbrkr.c:58: undefined reference to `_sbrk' .../gcc-linaro-7.3.1-2018.05-x86_64_aarch64-elf/bin/../aarch64-elf/libc/usr/lib/libc.a(lib_a-writer.o): In function `_write_r': /home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-elf/snapshots/newlib.git~linaro-local~linaro-newlib-2_5_0/newlib/libc/reent/writer.c:58: undefined reference to `_write' .../gcc-linaro-7.3.1-2018.05-x86_64_aarch64-elf/bin/../aarch64-elf/libc/usr/lib/libc.a(lib_a-closer.o): In function `_close_r': /home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-elf/snapshots/newlib.git~linaro-local~linaro-newlib-2_5_0/newlib/libc/reent/closer.c:53: undefined reference to `_close' .../gcc-linaro-7.3.1-2018.05-x86_64_aarch64-elf/bin/../aarch64-elf/libc/usr/lib/libc.a(lib_a-lseekr.o): In function `_lseek_r': /home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-elf/snapshots/newlib.git~linaro-local~linaro-newlib-2_5_0/newlib/libc/reent/lseekr.c:58: undefined reference to `_lseek' .../gcc-linaro-7.3.1-2018.05-x86_64_aarch64-elf/bin/../aarch64-elf/libc/usr/lib/libc.a(lib_a-readr.o): In function `_read_r': /home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-elf/snapshots/newlib.git~linaro-local~linaro-newlib-2_5_0/newlib/libc/reent/readr.c:58: undefined reference to `_read' .../gcc-linaro-7.3.1-2018.05-x86_64_aarch64-elf/bin/../aarch64-elf/libc/usr/lib/libc.a(lib_a-fstatr.o): In function `_fstat_r': /home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-elf/snapshots/newlib.git~linaro-local~linaro-newlib-2_5_0/newlib/libc/reent/fstatr.c:62: undefined reference to `_fstat' .../gcc-linaro-7.3.1-2018.05-x86_64_aarch64-elf/bin/../aarch64-elf/libc/usr/lib/libc.a(lib_a-isattyr.o): In function `_isatty_r': /home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-elf/snapshots/newlib.git~linaro-local~linaro-newlib-2_5_0/newlib/libc/reent/isattyr.c:58: undefined reference to `_isatty' collect2: error: ld returned 1 exit status In addition, there was the same bug in 7.4.1-2019.02 version, but not in arm-eabi or armeb-eabi. Is there anyone fixing this? Thanks, Junling

6 years, 11 months

3
2
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[ACTIVITY] 28 January 2019 - February 1 2019

by Prathamesh Kulkarni

== This Week == * SVE ACLE (6/10) - svlsl * Validation (2/10) - Upstream monitoring job based on round-robin - LLVM Buildbot babysitting * PR88839: Poor implementation of blend like permutes (1/10) * Misc (1/10) - Meetings == Next Week == - Continue ongoing tasks

6 years, 11 months

1
0
0 0

[ACTIVITY] Week 05

by Yvan Roux

o Still part time at university. o LLVM * Working on machine outliner RFC comments. o Misc * Various meetings and discussions.

6 years, 11 months

1
0
0 0

[ACTIVITY] 28 January-1 February 2019

by Kugan Vivekanandarajah

== Progress == * Short week - Annual Leave 2 days - Public Holiday 1 day (Australia day) *SVE ACLE - Revised remaining ACLE patches - svbic revised and reviewed * Auto Vectorizer - Looking at auto vectorisation SVE == Plan == * SVE ACLE * Look at PR88834

6 years, 11 months

1
0
0 0

[ACTIVITY] week ending 3 Feb 2019

by Richard Henderson

[VIRT-294 # ARMv8.3-PAuth, Pointer Authentication ] Fixed HCR/SCR enablement of API/APK. Posted v2 of the prctl. [VIRT-339 # ARMv8.5-BTI, Branch Target Identification ] Posted v2. [VIRT-327 # Richard's upstream QEMU work ] Implemented variable-length decoding in scripts/decodetree.py. Lots of fiddling about with the RX ISA to understand what was actually needed within decodetree. Pull request for vector extensions and dynamic tlb sizing. Finished MPS review. r~

6 years, 11 months

1
0
0 0

[ACTIVITY] week ending Feb. 3 2019

by Alex Bennée

Upstream Work ([VIRT-109]) ========================== - need to finish the re-work of [system test and misc arch] tests :todo - will be useful for test cases for plugins - also more test cases queued up for system tests - posted userspace CPUID access patches Message-Id: <20190128173940.25813-1-alex.bennee(a)linaro.org> - spent some time debugging PAuth kernel boot regression - rth posted a fix for the regression Message-Id: <20190129143511.12311-1-richard.henderson(a)linaro.org> Other Tasks =========== - rebuilt Zen after the /home SSD failed - fortunately the backup drive had all the work in progress source code - moved to Debian Buster while I'm at it - need to regenerate my images and foundation/FVP setup - and realise quite how many tweaks I had baked into the old system Completed Reviews [2/2] ======================= {Qemu-devel} {PATCH 00/11} Enable build and install of our rST docs Message-Id: <20190201145035.22739-1-peter.maydell(a)linaro.org> {RFC PATCH 0/3} lm32: convert to new common tcg infrastructure Message-Id: <20190131215611.29341-1-michael(a)walle.cc> Absences ======== - Connect BKK19 (1-5th April 2019) - holiday after Connect Current Review Queue ==================== * {PATCH v2 00/18} OpenBSD: Enable qtesting Message-Id: <20190129175403.18017-1-philmd(a)redhat.com> * {PATCH v11 00/25} Fixing record/replay and adding reverse debugging Message-Id: <20190131131520.23264.75724.stgit@pasha-VirtualBox> * {RFC v2 00/38} Plugin support Message-Id: <20181209193749.12277-1-cota(a)braap.org> * {RFC} arm: Allow system registers for KVM guests to be changed by QEMU code Message-Id: <20181206151401.13455-1-peter.maydell(a)linaro.org> * {Qemu-devel} {PATCH v3 0/4} tcg: support heterogenous CPU clusters Message-Id: <20190121152218.9592-1-peter.maydell(a)linaro.org> * {Qemu-devel} {PATCH RFC 00/11} Add Renesas RX archtecture Message-Id: <20190121131602.55003-1-ysato(a)users.sourceforge.jp> -- Alex Bennée

6 years, 11 months

1
0
0 0

[ACTIVITY] report week ending 1 Feb

by Peter Maydell

Progress: * VIRT-65 [QEMU upstream maintainership] + got the "use Sphinx for documentation" patchset to a point where I think we could plausibly commit it to master; sent out for review + two arm pull requests + sent patches fixing decode errors for FCMLA * VIRT-268 [QEMU support for dual-core Cortex-M Musca board] + AN521 model is now in upstream QEMU thanks -- PMM

6 years, 11 months

1
0
0 0

[ACTIVITY] 28 January-1 February 2019

by Christophe Lyon

== Progress == * FDPIC - (GNU-411) GDB: debugging problems with FDPIC support. * GCC upstream validation: - reported a few regressions - dealing with some random results, still - qemu-3.1: switched to it this week * GCC: - (GNU-99) rebased ubsan / bare-metal patches. No progress. - minor testsuite fixes * misc (conf-calls, meetings, emails, ....) - reviewing/submitted infra script patches - debugging new benchmarking round-robin jobs == Next == FDPIC: - GCC: handle feedback on v4 patches - GDB: update patches - uclibc-ng: look at how to test fdpic mode with openadk Infra: - benchmarking jobs

6 years, 11 months

1
0
0 0

[ACTIVITY] 28 January - 1 February 2019

by Diana Picus

== Progress == * Out of office on Friday * [Thumb GlobalISel] Support divisions [LLVM-516] - Committed upstream * [Thumb GlobalISel] Support G_GEP [LLVM-532] - Ready to commit next week * LLVM 8.0.0 Release for ARM & AArch64 [LLVM-526] - Posted binaries for rc1 - Created a bug report for a MSan failure on AArch64 * Use new version of GCC on buildbots [LLVM-515] - Ready to use in production == Plan == * More GlobalISel * Patch up the Jenkins release job [LLVM-533]

6 years, 12 months

1
0
0 0

[ACTIVITY] 21-25 January 2019

by Christophe Lyon

== Progress == * FDPIC - (GNU-411) GDB: debugging problems with FDPIC support. * GCC upstream validation: - reported a few regressions - dealing with some random results, still - qemu-3.1: plan to switch to it this week * GCC: - (GNU-99) rebased ubsan / bare-metal patches. No progress. - minor testsuite fixes * misc (conf-calls, meetings, emails, ....) - reviewing/submitted infra script patches - experimenting with new build servers - started looking at new benchmarking round-robin jobs == Next == FDPIC: - GCC: handle feedback on v4 patches - GDB: update patches - uclibc-ng: look at how to test fdpic mode with openadk

6 years, 12 months

1
0
0 0

[ACTIVITY] 21 January - 25 January 2019

by Prathamesh Kulkarni

== This Week == * SVE ACLE (8/10) - WIP patch for svlsl * Validation (1/10) - Upsteam monitoring job based on round-robin. - abe bug with make install * Meetings (1/10) == Next Week == - Continue ongoing tasks.

6 years, 12 months

1
0
0 0

[ACTIVITY] Week 04

by Yvan Roux

o Still part time at university. o LLVM * Buildbots babysitting. * Submitted machine outliner RFC upstream - Addressing comments.

6 years, 12 months

1
0
0 0

[ACTIVITY] 21 - 25 January 2019

by Kugan Vivekanandarajah

== Progress == * SVE ACLE - Revised and reviewed svbic main briant svbic_z for bool * Fixing uninit warning suppression from tree-ch pass - Implemented a patch to handle this and regression test is fine. Will post for review once stage 1 opens * tree-reassoc improvements - Looking at possible data structures to best represent == Plan == * Continue with SVE ACLE * Continue with tree-reassoc

6 years, 12 months

1
0
0 0

[ACTIVITY] week ending 27 Jan 2019

by Richard Henderson

[VIRT-294 # ARMv8.3-PAuth, Pointer Authentication ] Finished up the linux-user emulation, and posted. Reviewed a patch set from Huawei also touching PAuth. [VIRT-327 # Richard's upstream QEMU work ] Reviewed riscv decodetree v4 patchset. Partial review of new target/rx patchset. It is confusing enough to make me want to tackle the variable-length decodetree problem. Reviewed softtlb resize v7 patchset; ported that to the remaining tcg backends. Part way through reviewing Peter's MPS2 patch set. r~

7 years

1
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[ACTIVITY] week ending Jan. 27 2019

by Alex Bennée

QEMU Tooling ([VIRT-252]) ========================= QEMU plugin support ([VIRT-280]) - started reviewing {RFC v2 00/38} Plugin support Message-Id: <20181209193749.12277-1-cota(a)braap.org> - some bitrot when applied to current tree :/ [VIRT-280] https://projects.linaro.org/browse/VIRT-280 Upstream Work ([VIRT-109]) ========================== - respin {PATCH v3 0/5} support reading some CPUID/CNT registers from user-space Message-Id: <20180625160009.17437-1-alex.bennee(a)linaro.org> - re-based [v3 branch] - I think the id reg stuff is now addressed by rth's fixes - still need to address other review comments - posted {RFC PATCH 0/3} vmbuild tweaks for BSD targets Message-Id: <20190121171543.32422-1-alex.bennee(a)linaro.org> - posted {PATCH v3 00/11} current fpu/next queue (tests & build fix) Message-Id: <20190122215016.18697-12-alex.bennee(a)linaro.org> - finally solved the weird endianess issue - merged in {PULL v2 00/11} check-softfloat, fp-bench and clang compile fixes Message-Id: <20190123114220.16972-1-alex.bennee(a)linaro.org> - posted {PATCH v1 00/14} testing/next (binfmt_misc, vm-build and BSD CI) Message-Id: <20190125140017.6092-1-alex.bennee(a)linaro.org> - also did some work on [the linux-user multiarch but it is not ready yet] - need to finish the re-work of [system test and misc arch] tests :todo - will be useful for test cases for plugins - also more test cases queued up for system tests [VIRT-109] https://projects.linaro.org/browse/VIRT-109 [v3 branch] https://github.com/stsquad/qemu/tree/misc/cnt-and-misc-reg-fixes-v3 [the linux-user multiarch but it is not ready yet] https://github.com/stsquad/qemu/tree/testing/next-with-linux-user [system test and misc arch] https://github.com/stsquad/qemu/tree/testing/enable-system-tcg-tests-v2 Completed Reviews [2/2] ======================= {PATCH 00/18} Acceptance Tests: target architecture support Message-Id: <20190117185628.21862-1-crosa(a)redhat.com> - CLOSING NOTE [2019-01-25 Fri 19:33] Still a few edge cases to work out {PATCH 0/2} contrib: gitdm: Some updates Message-Id: <1547807155-4526-1-git-send-email-aleksandar.markovic(a)rt-rk.com> - CLOSING NOTE [2019-01-25 Fri 19:33] Queued to my tree Absences ======== - Connect BKK19 (1-5th April 2019) - holiday after Connect Current Review Queue ==================== * {RFC v2 00/38} Plugin support Message-Id: <20181209193749.12277-1-cota(a)braap.org> * {RFC} arm: Allow system registers for KVM guests to be changed by QEMU code Message-Id: <20181206151401.13455-1-peter.maydell(a)linaro.org> * {Qemu-devel} {PATCH v3 0/4} tcg: support heterogenous CPU clusters Message-Id: <20190121152218.9592-1-peter.maydell(a)linaro.org> * {Qemu-devel} {PATCH RFC 00/11} Add Renesas RX archtecture Message-Id: <20190121131602.55003-1-ysato(a)users.sourceforge.jp> * {Qemu-devel} {PATCH 00/11} target/arm: Implement ARMv8.5-BTI Message-Id: <20190110121736.23448-1-richard.henderson(a)linaro.org> * {PATCH v5 00/73} per-CPU locks Message-Id: <20181213050453.9677-1-cota(a)braap.org> -- Alex Bennée

7 years

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[ACTIVITY] report week ending 25 Jan

by Peter Smith

Majority of the week spent preparing for Fosdem talk on LLD: - Built Chrome for Arm and AArch64 to investigate link time performance on non-X86 platforms -- Both gold and bfd take a considerable amount of time to produce stubs/veneers/errata fixes -- AArch64 link time is comparable to X86 - LLD gets more usage out of multithreading than gold - Studied Gold and BFD structure to compare to LLD - About half of slides written. Some minor involvement with some investigations for ClangBuiltLinux.

7 years

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[ACTIVITY] report week ending 25 Jan

by Peter Maydell

Progress: * VIRT-65 [QEMU upstream maintainership] + code review: - 'SBSA reference' model (now quite close to being in shape to go in) - RTH's BTI patchset - RTH's patchset adding TBI support to user-mode emulation + sent patches fixing the last lot of clang -Waddress-of-packed-member warnings + had another look at the prototype work I did to use Sphinx for QEMU's documentation -- updated the patchset and started looking at how to tie it into our makefiles. + sent patches fixing a handful of underdecodings in our A64 decoder, where we should have UNDEFed but did not * VIRT-268 [QEMU support for dual-core Cortex-M Musca board] + sent out v1 of the patchset implementing the SSE-200 and MPS2 AN521 model + read through the Musca-B1 docs to confirm what we can easily put into an initial implementation of a model thanks -- PMM

7 years

1
0
0 0

[ACTIVITY] 21 - 25 January 2019

by Diana Picus

== Progress == * Out of office on Monday * [Thumb GlobalISel] Support G_SHL, G_ASHR, G_LSHR [LLVM-517] - Committed upstream * [Thumb GlobalISel] Support G_SDIV and G_UDIV [LLVM-516] - Most of the work done, ready to commit next week * LLVM 8.0 Release for ARM & AArch64 [LLVM-526] - Started a few jobs, but ran into some trouble with our containers - Will look more into it next week * Use new version of GCC on buildbots [LLVM-515] - Got it to work and committed patch; we have 2 silent bots running with GCC-7 - Will keep monitoring the bots and if they seem stable we can merge to tcwg-llvmprod next week == Plan == * Test LLVM 8.0.0 RC1 * Commit LLVM-516 * More GlobalISel * Out of office on Friday

7 years

1
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[ANNOUNCE] Linaro Binary Toolchain Release GCC 7.4-2019.02

by Mark Murray

The Linaro Binary Toolchain ============================ The Linaro GCC 7.4-2019.02 Release is now available. *Notice*: GCC 7.1 ABI change for arm*-*-* targets, and note for aarch64*-*-* targets >From GCC 7.1 release notes: On ARM targets (arm*-*-*), a bug introduced in GCC 5 that affects conformance to the procedure call standard (AAPCS) has been fixed. The bug affects some C++ code where class objects are passed by value to functions and could result in incorrect or inconsistent code being generated. This is an ABI change. If the option -Wpsabi is enabled (on by default) the compiler will emit a diagnostic note for code that might be affected. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77728 GCC 5 and GCC 6 releases will continue to be affected by the ABI bug, since changing ABI in these releases is not practical. A warning enabled by -Wpsabi option was added to GCC 5 and GCC 6 toolchains to diagnose codebases that might be affected by the ABI bug. Additionally, this same bug was present in AArch64 backend in development versions of GCC 7. There was no releases of GCC with this bug present in AArch64 backend, therefore the release notes does not mention this. However, be advised that any code bases built with development versions of GCC 7 need to be recompiled with released version of GCC 7 to conform to ABI. For an explanation of GCC 7 series changes please see the following website: https://gcc.gnu.org/gcc-7/changes.html For help in porting to GCC 7 please see the following explanation: https://gcc.gnu.org/gcc-7/porting_to.html Download release packages from: (sources) http://releases.linaro.org/components/toolchain/gcc-linaro/7.4-2019.02/ (binaries) http://releases.linaro.org/components/toolchain/binaries/7.4-2019.02/ Previous snapshots and release-candidates are at: http://snapshots.linaro.org/components/toolchain/binaries/ Previous releases are at: http://releases.linaro.org/components/toolchain/binaries/ A description of the arm and AArch64 target triples can be found at: https://collaborate.linaro.org/display/TCWGPUB/ARM+and+AArch64+Target+Tripl… Host Requirements ================== Linaro officially supports the current and previous Ubuntu LTS releases (as of the time of this release). This does not mean that the toolchain will not work on other/older Linux distributions. See the following for the life-time of Ubuntu LTS releases. https://wiki.ubuntu.com/Releases The host system upon which the cross-compiler will run requires a minimum of glibc 2.14, because of API changes to glibc's memcpy API. https://bugs.linaro.org/show_bug.cgi?id=1869 Package Versions ================= Linaro GCC 7.4-2019.02 http://releases.linaro.org/components/toolchain/gcc-linaro/7.4-2019.02/ FSF glibc 2.25 (release/2.25) https://lists.gnu.org/archive/html/info-gnu/2017-02/msg00002.html Newlib 2.5 (newlib-2_5_0 tag) https://sourceware.org/ml/newlib/2016/msg01191.html GNU Binutils 2.28 (users/linaro/binutils-2_28-branch) https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=blob_plain;f=bin… FSF GDB 8.2 (gdb-8.2-branch) https://lists.gnu.org/archive/html/info-gnu/2018-09/msg00001.html Linaro toolchain package git branches are hosted at: http://git.linaro.org/toolchain NEWS for GCC 7 (as of Linaro GCC 7.4-2019.02) ============================================== * Runtest and gdbserver are no longer installed in the toolchain bin/ directory. Binary releases no longer include runtest at all, and gdbserver is a target tool; it is now shipped in the sysroot under usr/bin/. LDTS case #2211: gdbserver and runtest in GCC binary release are in the wrong place or have the wrong name * Gdbserver is no longer linked statically, because this is currently unsupported. Linaro bugzilla #3344: gdbserver broken in Linaro 2017.02 https://bugs.linaro.org/show_bug.cgi?id=3344 * The Linaro GCC 7.4-2019.01 snapshot added a fix for Linaro bug 4007: "Internal compiler error with -mcpu=thunderx2t99". * The Linaro GCC 7.2-2017.09 snapshot added float and integer moves improvement for AArch64 targets. * The Linaro GCC 7.1-2017.07 snapshot added prefetching configuration improvement for AArch64 targets and laid groundwork to enabling prefetching in more cases. * Previous MinGW hosted version of Linaro GCC C preprocessor failed to convert character set used for string, character constants, etc. This is fixed in this release. Linaro bugzilla #3040 : CC1 and cc1plus cannot convert UTF-8. https://bugs.linaro.org/show_bug.cgi?id=3040 * Performance related backports from the following snapshots have been included: Linaro GCC 7.1-2017.05, Linaro GCC 7.1-2017.06, Linaro GCC 7.1-2017.07, Linaro GCC 7.2-2017.08, Linaro GCC 7.2-2017.09, Linaro GCC 7.2-2017.10, Linaro GCC 7.2-2018.04 and Linaro GCC 7.4-2019.01. See the following Linaro GCC snapshots: http://snapshots.linaro.org/components/toolchain/gcc-linaro/7.1-2017.05/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/7.1-2017.06/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/7.1-2017.07/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/7.2-2017.08/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/7.2-2017.09/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/7.2-2017.10/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/7.2-2018.04/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/7.4-2019.01/ Contact Linaro =============== File bugs at http://bugs.linaro.org For Linaro member support see http://support.linaro.org For Linaro community support email linaro-toolchain(a)lists.linaro.org

7 years

1
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Any 4.8.5 cross compile toolchain?

by xinliang

Hi Martin and Linaro-toolchain team, We want to use 4.8.5 cross compile toolchain to build ko. But we can't find such version on the release site[1]. Is there a 4.8.5 cross compile toolchain? [1] https://releases.linaro.org/components/toolchain/gcc-linaro/ Best, Xinliang

7 years

3
8
0 0

[ACTIVITY] Week 03

by Yvan Roux

o Still part time at university. o LLVM * Preparing machine outliner upstream submission as an RFC.

7 years

1
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[ACTIVITY] 14-18 January 2019

by Kugan Vivekanandarajah

== Progress == * SVE ACLE - Committed patches for * svabs, svneg, svnot and svsqrt series * svdiv series * svmulh series * svand, svorr, and sveor series * svdot series - Working on svbic and svbic_b variants * Others - Looking into tree-reassoc improvements for next stage1 - Looked into kernel plugin issue for arm == Plan == * Continue with SVE ACLE * Continue with tree-reassoc

7 years

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[ACTIVITY] week ending 20 Jan 2019

by Richard Henderson

[VIRT-344 # ARMv8.5-MemTag, Memory Tagging Extension ] Posted v1. [VIRT-327 # Richard's upstream QEMU work ] Posted v6 of linux-user split. Based on Laurent's feedback, I'm running LTP myself this time, at least for a few guests. r~

7 years

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[ACTIVITY] week ending Jan. 20 2019

by Alex Bennée

Upstream Work ([VIRT-109]) ========================== - posted {PULL 0/5} gitdm updates with final 2018 stats Message-Id: <20190114160956.7513-1-alex.bennee(a)linaro.org> - posted {PULL 00/21} misc testing fixes for Travis and docker Message-Id: <20190114150129.1013-1-alex.bennee(a)linaro.org> - we have gone green again - posted {PULL 0/7} check-softfloat, fp-bench and clang compile fixes Message-Id: <20190117132703.17790-1-alex.bennee(a)linaro.org> - some alt-OS issues and a weird failure on s390x - spent some time getting a working s390x setup to investigate - posted {PATCH} target/s390x: define TCG_GUEST_DEFAULT_MO for MTTCG Message-Id: <20190118171848.27332-1-alex.bennee(a)linaro.org> - need to investigate why s390x breaks so weirdly - messed around with a little [CONFIG_TCG type cleanups] - need to finish the re-work of [system test and misc arch] tests :todo - will be useful for test cases for plugins - also more test cases queued up for system tests - respin {PATCH v3 0/5} support reading some CPUID/CNT registers from user-space Message-Id: <20180625160009.17437-1-alex.bennee(a)linaro.org> :todo - in branch [v3 branch] [VIRT-109] https://projects.linaro.org/browse/VIRT-109 [CONFIG_TCG type cleanups] https://github.com/stsquad/qemu/tree/misc/config-tcg-cleanups [system test and misc arch] https://github.com/stsquad/qemu/tree/testing/enable-system-tcg-tests-v2 [v3 branch] https://github.com/stsquad/qemu/tree/misc/cnt-and-misc-reg-fixes-v3 Other Tasks =========== - wrote up and submitted abstract for Connect - I still hope to the history of TCG for TCWG room as well Completed Reviews [4/4] ======================= {Qemu-devel} {PATCH} .cirrus.yml: basic compile and test for FreeBSD Message-Id: <CAPyFy2Dw2F3ks_5f8cvWjrsOTS0_Ybr5kELUpyHQmOQWUaeuFg(a)mail.gmail.com> - CLOSING NOTE [2019-01-16 Wed 15:01] Adds FreeBSD testing, yet another CI system {PATCH v2} softfloat: enforce softfloat if the host's FMA is broken Message-Id: <20181225070305.18221-1-cota(a)braap.org> - CLOSING NOTE [2019-01-16 Wed 15:03] Queued to my tree {PATCH v6 0/3} Dynamic TLB sizing Message-Id: <20190114165017.27298-1-cota(a)braap.org> - CLOSING NOTE [2019-01-17 Thu 10:53] Found a few issues. {PATCH v7 0/3} Dynamic TLB sizing Message-Id: <20190116170114.26802-1-cota(a)braap.org> - CLOSING NOTE [2019-01-18 Fri 16:54] Looks good to me now. Absences ======== - Connect BKK19 (1-5th April 2019) - holiday after Connect Current Review Queue ==================== * {PATCH 0/2} contrib: gitdm: Some updates Message-Id: <1547807155-4526-1-git-send-email-aleksandar.markovic(a)rt-rk.com> * {PATCH 00/18} Acceptance Tests: target architecture support Message-Id: <20190117185628.21862-1-crosa(a)redhat.com> * {Qemu-devel} {PATCH 00/11} target/arm: Implement ARMv8.5-BTI Message-Id: <20190110121736.23448-1-richard.henderson(a)linaro.org> * {PATCH v5 00/73} per-CPU locks Message-Id: <20181213050453.9677-1-cota(a)braap.org> * {RFC v2 00/38} Plugin support Message-Id: <20181209193749.12277-1-cota(a)braap.org> * {RFC} arm: Allow system registers for KVM guests to be changed by QEMU code Message-Id: <20181206151401.13455-1-peter.maydell(a)linaro.org> -- Alex Bennée

7 years

1
0
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[ACTIVITY] report week ending 18 Jan

by Peter Smith

[LLVM-521] LLD and taking the address of an ifunc Went through the possible combinations (pic, pie, non-pic, exec, shared,...) found one relocation that gcc uses that clang doesn't, hence mc and LLD don't support. Raised upstream pr. Also found that clang's code-sequence for -fpie doesn't seem to guarantee ifunc pointer equivalence when linking -fpie (non-got generating sequence used when ifunc is in same translation unit). Will need some further investigation to confirm. [LLVM-499] Support for linking the linux kernel Committed -pic-veneer support and associated overflow fix, now merged to 8.0 branch. Other: - Started work on Fosdem presentation on LLD performance. Studying ld.bfd and ld.gold source code to look for structural differences between them and LLD. - Submitted presentation for next Linaro Connect - Review for comdat group and unused section elimination. - On buildbot duty.

7 years

1
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[ACTIVITY] report week ending 18 Jan

by Peter Maydell

Progress: * VIRT-65 [QEMU upstream maintainership] + some code review, and another arm pull-request (including RTH's pointer auth work) + sent patch fixing a bug in the gdbstub memory access path that meant it was always making accesses as NonSecure even if the guest CPU was currently Secure + sent patch fixing checkpatch to not wrongly complain about block comments starting "/**" * VIRT-268 [QEMU support for dual-core Cortex-M Musca board] + I have a model of the SSE-200 subsystem used by the Musca board, and a model of the MPS2 AN521 FPGA image which uses it. (Since it is basically "our existing MPS2 AN505 model, but with SSE-200 rather than IoTKit" it's a useful stepping stone to the Musca board.) There are still some bugs and missing features, but it seems to mostly be functional (it can run the ARM Trusted Firmware M test binary.) thanks -- PMM

7 years

1
0
0 0

[ACTIVITY] 14-18 January 2019

by Christophe Lyon

== Progress == * FDPIC - (GNU-411) GDB: gdbserver did not start because of a qemu-user feature. Worked around it. * GCC upstream validation: - reported a few regressions - dealing with some random results, still - qemu-3.1 memory consumption. Got some clarifications from IT team about LSF reports.. It seems qemu-3.1 consumes more memory in some cases, though. * GCC: - (GNU-99) rebased ubsan / bare-metal patches. No progress. - (GNU-597) Fixed arm testcase. - PR 85596 committed doc fix * misc (conf-calls, meetings, emails, ....) - reviewing/submitted infra script patches - dealing with nasty ST-internal infrastructure problems - (GNU-592): improved benchmarking scripts - experimenting with new build servers - ran Linaro binary toolchain tests on gcc-arm release, filled a few bug reports == Next == FDPIC: - GCC: handle feedback on v4 patches - GDB: update patches - uclibc-ng: look at how to test fdpic mode with openadk Validation: - isolate if/why qemu-3.1.0-rc3 consumes more memory than 2.11 for aarch64-linux target

7 years

1
0
0 0

[ACTIVITY] 14 - 18 January 2019

by Diana Picus

== Progress == * [ARM GlobalISel] Select complicated G_CONSTANT [LLVM-491] - Committed upstream * [ARM & Thumb GlobalISel] Support calls to vararg functions [LLVM-490] - This gets rid of all the fallbacks in the test-suite related to calls to printf (which is a lot) - Committed upstream * Use new version of GCC on buildbots [LLVM-515] - Fiddled with this a bit, but couldn't test much due to dockerd being broken for a couple of days - Manual installation of g++-7 from PPA works, but when trying the same steps in the dockerfile it keeps restarting; need to investigate why == Plan == * More of the same

7 years

1
0
0 0

[ACTIVITY] 14 January - 18 January 2019

by Prathamesh Kulkarni

== Progress == * SVE ACLE (6/10) - Committed patch for svlsl_wide. * GCC bugs (1/10) - PR88788: Infinite loop in malloc_candidate_p_1: Fixed in r267933 * Public holiday (2/10) * Misc (1/10) - Meetings == Next Week == - Continue ongoing tasks.

7 years

1
0
0 0

[ANNOUNCE] Linaro Binary Toolchain Release-Candidate GCC 7.4-2019.02-rc1

by Mark Murray

The Linaro Binary Toolchain ============================ The Linaro GCC 7.4-2019.02-rc1 Release-Candidate is now available. *Notice*: GCC 7.1 ABI change for arm*-*-* targets, and note for aarch64*-*-* targets From GCC 7.1 release notes: On ARM targets (arm*-*-*), a bug introduced in GCC 5 that affects conformance to the procedure call standard (AAPCS) has been fixed. The bug affects some C++ code where class objects are passed by value to functions and could result in incorrect or inconsistent code being generated. This is an ABI change. If the option -Wpsabi is enabled (on by default) the compiler will emit a diagnostic note for code that might be affected. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77728 GCC 5 and GCC 6 releases will continue to be affected by the ABI bug, since changing ABI in these releases is not practical. A warning enabled by -Wpsabi option was added to GCC 5 and GCC 6 toolchains to diagnose codebases that might be affected by the ABI bug. Additionally, this same bug was present in AArch64 backend in development versions of GCC 7. There was no releases of GCC with this bug present in AArch64 backend, therefore the release notes does not mention this. However, be advised that any code bases built with development versions of GCC 7 need to be recompiled with released version of GCC 7 to conform to ABI. For an explanation of GCC 7 series changes please see the following website: https://gcc.gnu.org/gcc-7/changes.html For help in porting to GCC 7 please see the following explanation: https://gcc.gnu.org/gcc-7/porting_to.html Download release-candidate packages from: (sources) http://snapshots.linaro.org/components/toolchain/gcc-linaro/7.4-2019.02-rc1/ (binaries) http://snapshots.linaro.org/components/toolchain/binaries/7.4-2019.02-rc1/ Previous snapshots and release-candidates are at: http://snapshots.linaro.org/components/toolchain/binaries/ Previous releases are at: http://releases.linaro.org/components/toolchain/binaries/ A description of the arm and AArch64 target triples can be found at: https://collaborate.linaro.org/display/TCWGPUB/ARM+and+AArch64+Target+Tripl… Host Requirements ================== Linaro officially supports the current and previous Ubuntu LTS releases (as of the time of this release). This does not mean that the toolchain will not work on other/older Linux distributions. See the following for the life-time of Ubuntu LTS releases. https://wiki.ubuntu.com/Releases The host system upon which the cross-compiler will run requires a minimum of glibc 2.14, because of API changes to glibc's memcpy API. https://bugs.linaro.org/show_bug.cgi?id=1869 Package Versions ================= Linaro GCC 7.4-2019.02-rc1 http://snapshots.linaro.org/components/toolchain/gcc-linaro/7.4-2019.02-rc1/ FSF glibc 2.25 (release/2.25) https://lists.gnu.org/archive/html/info-gnu/2017-02/msg00002.html Newlib 2.5 (newlib-2_5_0 tag) https://sourceware.org/ml/newlib/2016/msg01191.html GNU Binutils 2.28 (users/linaro/binutils-2_28-branch) https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=blob_plain;f=bin… FSF GDB 8.2 (gdb-8.2-branch) https://lists.gnu.org/archive/html/info-gnu/2018-09/msg00001.html Linaro toolchain package git branches are hosted at: http://git.linaro.org/toolchain NEWS for GCC 7 (as of Linaro GCC 7.4-2019.02-rc1) ================================================== * Runtest and gdbserver are no longer installed in the toolchain bin/ directory. Binary releases no longer include runtest at all, and gdbserver is a target tool; it is now shipped in the sysroot under usr/bin/. LDTS case #2211: gdbserver and runtest in GCC binary release are in the wrong place or have the wrong name * Gdbserver is no longer linked statically, because this is currently unsupported. Linaro bugzilla #3344: gdbserver broken in Linaro 2017.02 https://bugs.linaro.org/show_bug.cgi?id=3344 * The Linaro GCC 7.4-2019.01 snapshot added a fix for Linaro bug 4007: "Internal compiler error with -mcpu=thunderx2t99". * The Linaro GCC 7.2-2017.09 snapshot added float and integer moves improvement for AArch64 targets. * The Linaro GCC 7.1-2017.07 snapshot added prefetching configuration improvement for AArch64 targets and laid groundwork to enabling prefetching in more cases. * Previous MinGW hosted version of Linaro GCC C preprocessor failed to convert character set used for string, character constants, etc. This is fixed in this release. Linaro bugzilla #3040 : CC1 and cc1plus cannot convert UTF-8. https://bugs.linaro.org/show_bug.cgi?id=3040 * Performance related backports from the following snapshots have been included: Linaro GCC 7.1-2017.05, Linaro GCC 7.1-2017.06, Linaro GCC 7.1-2017.07, Linaro GCC 7.2-2017.08, Linaro GCC 7.2-2017.09, Linaro GCC 7.2-2017.10, Linaro GCC 7.2-2018.04 and Linaro GCC 7.4-2019.01. See the following Linaro GCC snapshots: http://snapshots.linaro.org/components/toolchain/gcc-linaro/7.1-2017.05/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/7.1-2017.06/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/7.1-2017.07/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/7.2-2017.08/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/7.2-2017.09/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/7.2-2017.10/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/7.2-2018.04/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/7.4-2019.01/ Contact Linaro =============== File bugs at http://bugs.linaro.org For Linaro member support see http://support.linaro.org For Linaro community support email linaro-toolchain(a)lists.linaro.org Mark Murray Staff Software Engineer | Arm . . . . . . . . . . . . . . . . . . . . . . . . . . . p: +44 1223 405082 arm.com <http://www.arm.com> IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you.

7 years

1
0
0 0

[ANNOUNCE] Arm Binary A-profile Toolchain Release GCC 8.2-2019.01

by Przemyslaw Wirkus

The Arm GNU Toolchain for the A-profile Architecture ===================================================== The Arm GNU Toolchain for the A-profile Architecture 8.2-2019.01 Release is now available. Arm is pleased to announce the first Arm-built release of the pre-built GNU cross-toolchain for the A-profile cores: GCC 8.2-2019.01. This is the same toolchain that was previously built and distributed by Linaro. For the official announcement, see: https://community.arm.com/tools/b/blog/posts/pre-built-gnu8-cross-toolchain… For more information about the GNU Arm toolchain and to download the release packages, see the Arm Developer website at: https://developer.arm.com/open-source/gnu-toolchain/gnu-a For an explanation of FSF GCC 8 series changes see: https://gcc.gnu.org/gcc-8/changes.html For help in porting to GCC 8 see the following explanation: https://gcc.gnu.org/gcc-8/porting_to.html Download the release packages from: (sources) https://developer.arm.com/open-source/gnu-toolchain/gnu-a/downloads (binaries) https://developer.arm.com/open-source/gnu-toolchain/gnu-a/downloads Previous snapshots and release-candidates for GCC 7 and earlier are at: (sources) https://releases.linaro.org/components/toolchain/gcc-linaro/ (binaries) http://snapshots.linaro.org/components/toolchain/binaries/ Previous releases for GCC 7 and earlier are at: http://releases.linaro.org/components/toolchain/binaries/ A description of the Arm and AArch64 target triples can be found at: https://collaborate.linaro.org/display/TCWGPUB/ARM+and+AArch64+Target+Tripl… Host Requirements ================== * Ubuntu 14.04 LTS x86_64 or later or RHEL 6.9 x86_64: * x86_64 hosted cross compiler for AArch64 ELF bare-metal target (x86_64-aarch64-elf). * x86_64 hosted cross compiler for AArch64 ELF bare-metal, big-endian target (x86_64-aarch64_be-elf). * x86_64 hosted cross compiler for AArch64 GNU/Linux target (x86_64-aarch64-linux-gnu). * x86_64 hosted cross compiler for AArch64 GNU/Linux big-endian target (x86_64-aarch64_be-linux-gnu). * x86_64 hosted cross compiler for AArch32 bare-metal target (x86_64-arm-eabi). * x86_64 hosted cross compiler for AArch32 target with soft float (x86_64-arm-linux-gnueabi). * x86_64 hosted cross compiler for AArch32 target with hard float (x86_64-arm-linux-gnueabihf). * Windows 7 or later, for 32 and 64 bit OS: * i686-mingw32 hosted cross compiler for AArch32 bare-metal target (i686-mingw32-arm-eabi). * i686-mingw32 hosted cross compiler for AArch64 ELF bare-metal target (i686-mingw32-aarch64-elf). Package Versions ================= GCC 8.2.1 https://gcc.gnu.org/gcc-8/changes.html FSF glibc 2.28 http://lists.gnu.org/archive/html/info-gnu/2018-08/msg00000.html Newlib 3.0.0 https://sourceware.org/ml/newlib/2018/msg00019.html GNU Binutils 2.30 https://lists.gnu.org/archive/html/info-gnu/2018-01/msg00010.html FSF GDB 8.1.1 https://www.gnu.org/software/gdb/download/ANNOUNCEMENT libexpat 2.2.5 https://github.com/libexpat/libexpat/blob/R_2_2_5/expat/Changes libgmp 4.3.2 libisl 0.15 libmpfr 3.1.6 libmpc 0.8.2 libiconv 1.15 Sources provided in release source tar ball. News for GCC 8 (as of GCC 8.2-2019.01) ======================================= * Fix for "gcc-arm-8.2 toolchains do not support sanitizers". https://bugs.linaro.org/show_bug.cgi?id=4041 * Fix for "gcc-arm-8.2-2018.08 release points to https://gcc.gnu.org/bugs/". https://bugs.linaro.org/show_bug.cgi?id=4045 * Fix for "gcc8.2/AArch64: aarch64-linux-gnu-gdb: TUI mode is not supported". https://bugs.linaro.org/show_bug.cgi?id=4130 * Fix for "arm gcc-8 release is missing gold linker". https://bugs.linaro.org/show_bug.cgi?id=4212 * Each binary release file now contains manifest file with configuration flags for each toolchain component. For more details about Spectre V1 defense in GCC visit: https://lwn.net/Articles/759423/ Contact Arm ============ For any questions, please use the Arm Communities forums at: https://community.arm.com/tools/ Please report any bugs via the Linaro Bugzilla at: https://bugs.linaro.org/

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[ANNOUNCE] Linaro GCC 7.4 2019.01 source snapshot

by Mark Murray

The Linaro Toolchain Working Group (TCWG) is pleased to announce the 2019.01 snapshot of the Linaro GCC 7 source package. The GCC 7 series introduced an ABI change for ARM targets by fixing a bug (present since GCC 5, see link below) that affects conformance to the procedure call standard (AAPCS). The bug affects some C++ code where class objects are passed by value to functions and could result in incorrect or inconsistent code being generated. If the option -Wpsabi is enabled (on by default) the compiler will emit a diagnostic note for code that might be affected by this ABI change. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77728 For an explanation of the changes please see the following website: https://gcc.gnu.org/gcc-7/changes.html This snapshot1 is based on FSF GCC 7.4+svn267072 and includes performance improvements and bug fixes backported from mainline GCC. The contents of this snapshot will be part of the 2019.01 stable2 periodic release. Interesting changes in this GCC source package snapshot include: Updates to GCC 7.4+svn267072 Linaro bug 4007: “Internal compiler error with -mcpu=thunderx2t99” is fixed Feedback and Support Subscribe to the important Linaro mailing lists and join our IRC channels to stay on top of Linaro development. o Subscribe to the important Linaro mailing lists and join our IRC channels to stay on top of Linaro development. ** Linaro Toolchain Development mailing list: http://lists.linaro.org/mailman/listinfo/linaro-toolchain ** Linaro Toolchain IRC channel on irc.freenode.net at #linaro-tcwg * Bug reports should be filed in Bugzilla against GCC product: http://bugs.linaro.org/enter_bug.cgi?product=GCC * Interested in commercial support? inquire at Linaro support: mailto:support@linaro.org [1]. Source package snapshots are defined when the compiler is only put through unit-testing and full validation is not performed. [2]. Stable source package releases are defined as releases where the full Linaro Toolchain validation plan is executed. IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you.

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[ACTIVITY] Week 02

by Yvan Roux

o Week mostly dedicated to University o LLVM * 7.0.1 final ARM and AArch64 binaries uploaded * Adding testcases to Machine Outliner prototype

7 years

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cannot build "Hello World" project

by Jie Sheng

Hi, I am new to the Linaro toolchain and has followed the tutorial https://www.youtube.com/watch?v=xNHIAHJ2ceY from Part 1 to Part 3. I downloaded gcc-linaro-7.3.1-2018.05-i686-mingw32_aarch64-elf.tar.xz<https://releases.linaro.org/components/toolchain/binaries/latest-7/aarch64-…> and unzipped it. The toolchain is GCC7.3.1. [aarch64-elf]. I tried to build the "Hello World" project, and typed "--specs=aem-ve.specs" in all configurations just as the video did. Then I got errors shown in the attached picture. Would you please help? BTW my machine is x86 64 bit. Did I install the correct version of toolchain? Looking forward to your reply! regards, Jenny [https://www.bing.com/th?id=OVP.6Rb47fIamx6ZsOb2OWQm3AEsDh&pid=Api] <https://www.youtube.com/watch?v=xNHIAHJ2ceY> Part 3 - Create a Project for ARMv8 Model<https://www.youtube.com/watch?v=xNHIAHJ2ceY> www.youtube.com This video series explains how to run applications on ARMv8 model using the ARM DS-5 Development Studio.

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[ACTIVITY] 7 January - 11 January 2019

by Kugan Vivekanandarajah

== Progress == * SVE ACLE - Revised svmla, svmls, svmad and svmsb and committed after getting ACK - Revised again posted for review * svabs, svneg, svnot and svsqrt series * svdiv series * svmulh series * svand, svorr, and sveor series * svdot series == Plan == * Contine with sve acle

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[ACTIVITY] week ending 11 Jan

by Peter Smith

[LLVM-520] LLD Fix movt/movw relocation overflow Now committed upstream. [LLVM-521] Taking the address of an ifunc in AArch64 Prompted by a bug report and comment about pointer equivalence, spent some time looking into gold, lld and bfd behaviour to ensure that LLD is at least correct. Other Some investigation into LLD non-support of common-page-size and whether this is significant for code-size. Used in response to query about whether LLD should change default value of max-page-size. Thoughts about whether a linker must generate cantunwind .ARM.exidx sections for code sections missing a .ARM.exidx section. If C++ code with exceptions is interleaved with some assembly code without .ARM.exidx sections then the assembly code can match the address range of the C++ code that precedes it.

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[ACTIVITY] report week ending 11 Jan

by Peter Maydell

Progress: * VIRT-65 [QEMU upstream maintainership] - code review: + rth's pointer-auth emulation patchset + more devices for the microbit board model + support for u-boot "noload" image type + gdbstub multiprocess extension support for use when the board model has multiple asymmetric clusters (like Xilinx Zynq boards) - finished debugging patch for aarch64 host linux-user to distinguish SEGV on read from SEGV on write by looking at the ESR context struct from the kernel rather than by looking at the faulting insn; sent it. - sent patch to fix linux-user pread64/pwrite64 with NULL buffer and 0 length * VIRT-268 [QEMU support for dual-core Cortex-M Musca board] - Sent out patchset fixing heterogenous CPU support (required a lot of thought about what we might need to fix and not all that much code, in the end) - Started work on refactoring our IoTKit model to also support the extra pieces required by the SSE-200 subsystem used in the Musca thanks -- PMM

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[ACTIVITY] week ending Jan. 13 2019

by Alex Bennée

Upstream Work ([VIRT-109]) ========================== - posted {PATCH v1 0/6} current fpu/next queue Message-Id: <20190108162154.22259-1-alex.bennee(a)linaro.org> - posted {PATCH v1 0/3} gitdm updates Message-Id: <20190107111129.2087-2-alex.bennee(a)linaro.org> - posted {PATCH v1 00/19} testing/next queue for travis and docker Message-Id: <20190110174516.21586-1-alex.bennee(a)linaro.org> - also managed to trigger two of the occasional Travis failures locally - one is a segfault in mcount (gprof/RCU related) - the other seems to be a O_NONBLOCK/make interaction (using eBPF to track it) - did a little more on re-work of [system test and misc arch] tests - will be useful for test cases for plugins - respin {PATCH v3 0/5} support reading some CPUID/CNT registers from user-space Message-Id: <20180625160009.17437-1-alex.bennee(a)linaro.org> :todo - in branch [v3 branch] [VIRT-109] https://projects.linaro.org/browse/VIRT-109 [system test and misc arch] https://github.com/stsquad/qemu/tree/testing/enable-system-tcg-tests-v2 [v3 branch] https://github.com/stsquad/qemu/tree/misc/cnt-and-misc-reg-fixes-v3 Completed Reviews [2/2] ======================= {PATCH v3 0/2} tests: Reorganize MIPS TCG directories and files Message-Id: <1546621859-28227-1-git-send-email-aleksandar.markovic(a)rt-rk.com> - CLOSING NOTE [2019-01-07 Mon 11:23] A few notes about keeping makefile {PATCH 00/13} Misc fixes / improvements for the docker and travis configs Message-Id: <20190109163114.17010-1-berrange(a)redhat.com> - CLOSING NOTE [2019-01-10 Thu 12:34] Queued a chunk of these into testing/next Absences ======== - Connect BKK19 (1-5th April 2019) - holiday after Connect Current Review Queue ==================== * {Qemu-devel} {PATCH 00/11} target/arm: Implement ARMv8.5-BTI Message-Id: <20190110121736.23448-1-richard.henderson(a)linaro.org> * {PATCH v9 00/21} Fixing record/replay and adding reverse debugging Message-Id: <154703587757.13472.3898702635363120794.stgit@pasha-VirtualBox> * {Qemu-devel} {PATCH 0/4} tcg: support heterogenous CPU clusters Message-Id: <20190108163008.7006-1-peter.maydell(a)linaro.org> * {Qemu-devel} {PATCH v3 00/31} target/arm: Implement ARMv8.3-PAuth Message-Id: <20190108223129.5570-1-richard.henderson(a)linaro.org> * {Qemu-arm} {PATCH 0/3} target/arm: Vector expansion improvments. Message-Id: <20190106225035.5671-1-richard.henderson(a)linaro.org> * {Qemu-devel} {PATCH} configure: Force the C standard to gnu11 Message-Id: <1546857926-5958-1-git-send-email-thuth(a)redhat.com> -- Alex Bennée

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[ACTIVITY] 2-11 January 2019

by Christophe Lyon

== Progress == * FDPIC - (GNU-499) GCC: wait for feedback on v4 patches, but GCC just entered stage4, so it's probably too late for gcc-9 :-( - (GNU-411) GDB: hacked to build gdbserver, but the resulting binary does not start. * GCC upstream validation: - reported a few regressions - dealing with some random results, still - qemu-3.1.0-rc3, memory consumption: more experiments under LSF show "random" reports for memory consumption. It seems qemu-3.1 consumes more memory in some cases, though. * GCC: - (GNU-99) rebased ubsan / bare-metal patches. No progress. * misc (conf-calls, meetings, emails, ....) - reviewing/submitted infra script patches - dealing with nasty ST-internal infrastructure problems - (GNU-592): improved benchmarking scripts - (TCWG-1501) looking at new build servers configs == Next == FDPIC: - GCC: handle feedback on v4 patches - GDB: update patches - uclibc-ng: look at how to test fdpic mode with openadk Validation: - isolate if/why qemu-3.1.0-rc3 consumes more memory than 2.11 for aarch64-linux target

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[ACTIVITY] 7 January - 11 January 2019

by Prathamesh Kulkarni

== This Week == * SVE ACLE (6/10) - Working on svlsl_wide patch. * PR887881: Infinite loop in malloc_candidate_p_1 (1/10) * Validation (2/10) - Prototype HCQC wrapper script * Misc (1/10) - Meetings == Next Week == - Continue ongoing tasks.

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[ACTIVITY] 7 - 11 January 2019

by Diana Picus

== Progress == * [ARM GlobalISel] Select complicated G_CONSTANT [LLVM-491] - Negative constants in particular cause a lot of fallbacks in the test-suite/selfhost - Need to help TableGen produce code for MOVi32imm - Ready to commit next week - Looked a bit into enabling MVNi as well, but that seems to require more effort * Use new version of GCC on buildbots [LLVM-515] - Talked to doko and got a different PPA - Didn't get a chance to test it yet, will do next week * Sanity checks for docker builbbot containers - Sent a quick patch to check slavenames and compatibility between slave and image when starting a bot container * Investigated some buildbot failures - Marked 2 sanitizer tests as unsupported on ARM - Need to investigate further so we can re-enable them - I've been emailing the author, hopefully he can help debug == Plan == * More of the same

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[ACTIVITY] week ending 13 Jan 2019

by Richard Henderson

[VIRT-294 # ARMv8.3-PAuth, Pointer Authentication ] Posted v3 based on feedback. [VIRT-339 # ARMv8.5-BTI, Branch Target Identification ] Posted "v1" to qemu-devel, rebased on v3 pauth [VIRT-344 # ARMv8.5-MemTag, Memory Tagging Extension ] Progressed to the "write a standalone test case" stage for linux-user. I'll need to discuss address space stuff w/ PMM for system mode. Discovered while writing a test case for this that my document and gas do not agree on the instruction encodings. Putting this on hold until query about document revision numbers is answered. Posted pieces of this implementing TBI for aarch64-linux-user. [VIRT-327 # Richard's upstream QEMU work ] Fixed alpha-linux-user fpcr initialization. Fixed alpha-softmmu double-increment of SIGILL address. Sent v2 patchset for target/arm use of gvec minmax routines. r~

7 years

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[ANNOUNCE] Linaro Binary Toolchain Release GCC 6.5-2018.12

by Mark Murray

The Linaro Binary Toolchain ============================ The Linaro GCC 6.5-2018.12 Release is now available. The GCC 6 Release series has significant changes from the GCC 5 release series. For an explanation of the changes please see the following website: https://gcc.gnu.org/gcc-6/changes.html For help in porting to GCC 6 please see the following explanation: https://gcc.gnu.org/gcc-6/porting_to.html Download release packages from: (sources) http://releases.linaro.org/components/toolchain/gcc-linaro/6.5-2018.12/ (binaries) http://releases.linaro.org/components/toolchain/binaries/6.5-2018.12/ Previous snapshots and release-candidates are at: http://snapshots.linaro.org/components/toolchain/binaries/ Previous releases are at: http://releases.linaro.org/components/toolchain/binaries/ A description of the arm and AArch64 target triples can be found at: https://collaborate.linaro.org/display/TCWGPUB/ARM+and+AArch64+Target+Tripl… Host Requirements ================== Linaro officially supports the current and previous Ubuntu LTS releases (as of the time of this release). This does not mean that the toolchain will not work on other/older Linux distributions. See the following for the life-time of Ubuntu LTS releases. https://wiki.ubuntu.com/Releases The host system upon which the cross-compiler will run requires a minimum of glibc 2.14, because of API changes to glibc's memcpy API. https://bugs.linaro.org/show_bug.cgi?id=1869 Package Versions ================= Linaro GCC 6.5-2018.12 http://releases.linaro.org/components/toolchain/gcc-linaro/6.5-2018.12/ Linaro glibc 2.23 (linaro/2.23/master) https://lists.gnu.org/archive/html/info-gnu/2016-02/msg00009.html Linaro newlib 2.4-2016.03 (linaro_2.4-branch) https://sourceware.org/ml/newlib/2016/msg00370.html Linaro binutils 2.27 (users/linaro/binutils-2_27-branch) https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=blob_plain;f=bin… Linaro GDB 8.2 (gdb-8.2-branch) https://lists.gnu.org/archive/html/info-gnu/2018-09/msg00001.html Linaro toolchain package git branches are hosted at: http://git.linaro.org/toolchain NEWS for GCC 6 (as of Linaro GCC 6.5-2018.12) ============================================== * Runtest and gdbserver are no longer installed in the toolchain bin/ directory. Binary releases no longer include runtest at all, and gdbserver is a target tool; it is now shipped in the sysroot under usr/bin/. LDTS case #2211: gdbserver and runtest in GCC binary release are in the wrong place or have the wrong name * Gdbserver is no longer linked statically, because this is currently unsupported. Linaro bugzilla #3344: gdbserver broken in Linaro 2017.02 https://bugs.linaro.org/show_bug.cgi?id=3344 * Previous MinGW hosted version of Linaro GCC C preprocessor failed to convert character set used for string, character constants, etc. This is fixed in this release. Linaro bugzilla #3040 : CC1 and cc1plus cannot convert UTF-8. https://bugs.linaro.org/show_bug.cgi?id=3040 * The Linaro GCC 6.3-2017.05 snapshot added support for -mpure-code option to ARMv7-M and ARMv8-M targets. This option ensures functions are put into sections that contain only code and no data. * The GDB version was upgraded from GDB 8.1 to 8.2. * Previous versions of the Linaro GCC 6 toolchain, when -static -E/—dynamic-list are passed to the linker, might create executables with dynamic sections which aren’t supported by run-time. This was exhibited in Perf Tools build system and has been fixed upstream and backported into Linaro Binutils 2.27 branch. Linaro bugzilla #2926 : Perf tools compiled statically for AArch64 with Linaro release 6.1 and later ones was not statically linked. https://bugs.linaro.org/show_bug.cgi?id=2926 * The Linaro GCC 6.3-2017.03 snapshot fixed some ILP32 issues (TLS, exception handling, …) and these have been incorporated into this release. * Previous versions of the Linaro GCC 6 toolchain were incorrectly generating floating-point code for soft-float Linux targets (arm-linux-gnueabi, and armeb-linux-gnueabi). This escaped detection until recently because the soft-float targeted toolchains were configured to use general-purpose registers for passing floating-point values (which is what you would expect for soft-float toolchains) and the intra-routine floating-code was not noticed. The issue would only show up on targets that were run on hardware that truly didn't have floating-point hardware where the kernel did not trap and emulate floating-point routines. This has been solved in Linaro GCC 6.3-2017.02-rc2 by configuring the toolchain (using --with-float=soft) to generate code without any floating-point instructions at all (-mfloat-abi=soft). https://review.linaro.org/#/c/16968/2 This change should not break compatibility between existing binaries compiled with these toolchains since the float-point parameter passing ABI is still the same. * A bug/regression in the compiler has been identified whereby the target function that is invoked when calling a "weak" function directly is the "strong" override, whereas when calling the function via a pointer the "weak" implementation is used. This would be noticed as inconsistent function invocation when invoking directly vs. invoking via function pointer. This issue only affected 32-bit arm targets. This regression has been fixed upstream and backported into Linaro GCC 6.3-2017.02-rc2. GCC PR target/78253: [5/6/7 Regression] [ARM] call weak function instead of strong when called through pointer. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78253 Linaro bugzilla #2562: ARM GCC 5.2 call weak function instead of strong when called through pointer https://bugs.linaro.org/show_bug.cgi?id=2562 * MS Windows does not support symlinks and the MS Windows archive extractor does not properly deep copy the symlink target files/directories into the symlinked directory structure when unpacking the toolchain archive. This causes problems with missing dependencies when using the Linaro mingw toolchains, as identified in the following bugs: https://bugs.linaro.org/show_bug.cgi?id=2684 https://bugs.linaro.org/show_bug.cgi?id=2192 https://bugs.linaro.org/show_bug.cgi?id=2762 This has been solved by copying files rather than using symlinks when the mingw targetted toolchain archives are created. https://review.linaro.org/#/c/16415/ * Users of Linaro's toolchain have encountered problems when building projects with Autotools (specifically libtool): https://bugs.linaro.org/show_bug.cgi?id=2764 The Linaro binary toolchain release contained files with a .la suffix as artifacts of the toolchain build process. These .la files are helper files for libtool, but unlike a gcc install tree, they are not position independent and contain full paths. Since these artifacts contain absolute paths they can actually mislead user invocation of libtool into not finding required libraries (because they reference the build tree, not the install location) and hence breaking Autotools builds. These *.la file artifacts have been removed from Linaro toolchain binaries because they are unnecessary for users. * The Linaro GCC 6.3-2017.01 snapshot added further enablement for ARMv8-M and these have been incorporated into this release. * Compiling and statically linking some SPEC2006int tests against tcmalloc have been failing due to a problem with glibc's memory allocator function overrides. This was fixed upstream: https://sourceware.org/bugzilla/show_bug.cgi?id=20432 Backported into Linaro glibc 2.23: commit 058b5a41d56b9a8860dede14d97dd443792d064b Author: Florian Weimer <fweimer(a)redhat.com> Date: Fri Aug 26 22:40:27 2016 +0200 malloc: Simplify static malloc interposition [BZ #20432] * Host binaries for x86_64 linux hosts now have symbols and debug information stripped in order to reduce the size of the toolchain binary archives. This reduces the archive size from 1.5G to 600M for aarch64-linux-gnu target with the gcc-6-branch. * The GDB version was upgraded from GDB 7.11 in the Linaro GCC 6.1-2016.08 release to GDB 7.12 in the Linaro GCC 6.2-2016.11 release. * The Linaro GCC 6.2-2016.10 snapshot added AArch32 support for ARMv8.2 and ARMv8m, as well as some AArch64 fixes for ARMv8.2, and bug fixes merged from FSF GCC 6.2. This is available in the binary toolchain as of Linaro GCC 6.2-2016.11. * Basic tuning support for the Qualcomm qdf24xx was added to the Linaro GCC 6.2-2016.10 snapshot and is available in the binary toolchain as of Linaro GCC 6.2-2016.11. * IFUNC was disabled for baremetal targets, as it was causing test-suite failures, and is presently a Linux only feature. * The gold linker was added to this binary release. * Backported malloc_lock fix into Linaro newlib 2.4. commit 2665915cfc46aa6403bb2efd473c523d3167e0cb Author: Andre Vieira (lists) <Andre.SimoesDiasVieira(a)arm.com> Date: Thu Jun 16 12:23:51 2016 +0100 Re-enable malloc_lock for newlib-nano * Backported rawmemchr patch into Linaro newlib 2.4. commit e7b1ee2ea6aa3ee1da41976407410e6202a098c5 Author: Wilco Dijkstra <Wilco.Dijkstra(a)arm.com> Date: Thu May 12 16:16:58 2016 +0000 Add rawmemchr * Backported strlen fix when using Thumb-2 and -Os -marm into Linaro newlib 2.4. commit 5c02bcc086a96b174e1b9e1445a4a1770070107a Author: Thomas Preud'homme <thomas.preudhomme(a)arm.com> Date: Wed May 11 17:18:48 2016 -0400 Fix strlen using Thumb-2 with -Os -marm * Backported fix for semihosting ARM when heapinfo not provided by debugger into Linaro newlib 2.4. commit 5c9403eaf40951f8a4f55ed65f661b485ff44be7 Author: David Hoover <spm2(a)dangerous.li> Date: Thu Apr 21 07:12:24 2016 +0200 Fixed semihosting for ARM when heapinfo not provided by debugger. * Merged latest FSF glibc release/2.23/master into Linaro glibc 2.23. * Backported __ASSUME_REQUEUE_PI check Linaro glibc 2.23 branch. commit 2d20c3bf918cd94ebd4106693adb3a5c9272baba Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org> Date: Tue May 17 10:16:39 2016 -0300 Add runtime check for __ASSUME_REQUEUE_PI (BZ# 18463) * Backported removal of __ASSUME_SET_ROBUST_LIST from Linaro glibc 2.23 branch. commit bb8f09d72756186a3d82a1f7b2adcf8bc1fbaed1 Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org> Date: Mon May 16 19:01:10 2016 -0300 Remove __ASSUME_SET_ROBUST_LIST * Backported removal of __ASSUME_FUTEX_LOCK_PI from Linaro glibc 2.23 branch. commit e48b4e7fed0de06dd7832ead48bea8ebc813a204 Author: Adhemerval Zanella <adhemerval.zanella(a)linaro.org> Date: Mon May 16 10:35:25 2016 -0300 Remove __ASSUME_FUTEX_LOCK_PI * Merged latest FSF binutils-2_27-branch into linaro_binutils-2_27-branch. * The libwinpthread DLL is now copied into the host bin directory to satisfy mingw package dependencies. * Backported GNU Linker fix. commit fbc6c6763e70cb2376e2de990c7fc54c0ee44a59 Author: Nick Clifton <nickc(a)redhat.com> Date: Tue Aug 23 09:45:11 2016 +0100 Fix seg-fault in ARM linker when trying to parse a binary file. * Backported GNU Assembler fix for PR 20364 commit 5fe7ebe5ab43750abf8f490b785d99a1e598e7fd Author: Nick Clifton <nickc(a)redhat.com> Date: Fri Aug 5 10:37:57 2016 +0100 Fix the generation of alignment frags in code sections for AArch64. https://sourceware.org/bugzilla/show_bug.cgi?id=20364 * Performance related backports from the following snapshots have been included: Linaro GCC 6.1-2016.06, Linaro GCC 6.1-2016.07, Linaro GCC 6.1-2016.08, Linaro GCC 6.2-2016.09, Linaro GCC 6.2-2016.10, Linaro GCC 6.2-2016.11, Linaro GCC 6.2-2016.12, Linaro GCC 6.3-2017.01, Linaro GCC 6.3-2017.02, Linaro GCC 6.3-2017.03, Linaro GCC 6.3-2017.04, Linaro GCC 6.3-2017.05, Linaro GCC 6.3-2017.06, Linaro GCC 6.4-2017.07, Linaro GCC 6.4-2017.08, Linaro GCC 6.4-2017.09, Linaro GCC 6.4-2017.10, Linaro GCC 6.4-2018.04 and Linaro GCC 6.5-2018.11. See the following Linaro GCC snapshots: http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.1-2016.06/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.1-2016.07/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.1-2016.08/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.2-2016.09/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.2-2016.10/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.2-2016.11/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.2-2016.12/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.01/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.02/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.03/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.04/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.05/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.3-2017.06/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.4-2017.07/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.4-2017.08/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.4-2017.09/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.4-2017.10/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.4-2018.04/ http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.5-2018.11/ Contact Linaro =============== File bugs at http://bugs.linaro.org For Linaro member support see http://support.linaro.org For Linaro community support email linaro-toolchain(a)lists.linaro.org

7 years

1
0
0 0

Application level interface for ARMv8.5-BTI?

by Richard Henderson

This seems like a tricky extension to deploy to the operating system. What is the proposed interface for setting GP on application pages? There are several things that seem plausible to me, and I wondered how far planning has gotten. An mmap/mprotect flag? An ELF program header PT_ARM_BTI (a-la PT_GNU_RELRO) to direct the loader to set said flag when mapping binaries? Or equivalently, a PF_MASKOS bit that could be set on the normal PT_LOAD header. An ELF section flag set by the compiler for sections that use -mbti, which are then collected into the PT_GNU_BTI segment by the linker? That seems like the most plausible way to indicate on a per-binary basis that it has been compiled with the BTI hints in place. But probably there are other ways that make an equal amount of sense. Is there any coordination going on with Intel wrt their similar gadget protection scheme(s)? r~

7 years

4
4
0 0

[ACTIVITY] week ending 6 Jan 2019

by Richard Henderson

Short week -- 3 days. [VIRT-344 # ARMv8.5-MemTag, Memory Tagging Extension ] Started. [VIRT-327 # Richard's upstream QEMU work ] Sent v2 of gvec patches for saturating arithmetic and minmax. r~

7 years

1
0
0 0

[ACTIVITY] 31st December 2018 - 4 January 2019

by Prathamesh Kulkarni

== This Week == * SVE ACLE (8/10) - Addressing comments by Richard for svlsl_wide - Created patch for svcls / svclz * Validation (2/10) - WIP hcqc wrapper script == Next Week == - Continue ongoing tasks

7 years

1
0
0 0

[ACTIVITY] report week ending 4 Jan

by Peter Maydell

(Short week, 2 days) Progress: * VIRT-65 [QEMU upstream maintainership] - catching up on email/review backlogs from the holidays - investigating a weird failure where running 'make check' in a loop would cause make to complain "make: write error: stdout". This seems to be because one or two of our test cases would put stdin/stdout into O_NONBLOCK, which then made make's output routines fall over... thanks -- PMM

7 years

1
0
0 0

[ACTIVITY] 24 - 28 December 2018

by Prathamesh Kulkarni

== This Week == * SVE ACLE (8/10) - WIP patches for svlsl_wide, integer comparisons and cls/clz. * Public holiday (2/10) == Next Week == - Continue ongoing tasks

7 years

1
0
0 0

[ACTIVITY] week ending 23 Dec 2018

by Richard Henderson

[VIRT-327 # Richard's upstream QEMU work ] Some tcg-op-gvec work in support of MCA's target/ppc AltiVec work. But in the process filled in the blanks for target/arm to take advantage of the new entry points. Rebased my August linux-user split work, reorg'ed for advice, and posted v5. Reviewing Cota's dynamic sized tlb patch set. TODO: I want to update the aarch64 backend for this before finalizing a data structure layout. [VIRT-339 # ARMv8.5-BTI, Branch Target Identification ] Posted v1. We'll not talk about mailing lists any further. :-P Merry Christmas, all! r~

7 years, 1 month

1
0
0 0

[ACTIVITY] 17-21 December 2018

by Christophe Lyon

== Progress == * FDPIC - (GNU-499) GCC: wait for feedback on v4 patches - (GNU-411) GDB: it seems qemu's gdbstub needs patches to support packets needed by fdpic. Tried to build gdbserver for fdpic, but the code base changed a lot since our original port. * GCC upstream validation: - reported a few regressions - dealing with some random results, still - qemu-3.1.0-rc3, memory consumption: no time to really look at the problem. Unable to match time's figures with LSF's * GCC: - (GNU-99) rebased ubsan / bare-metal patches. Using gcc-built libubsan worked with an in-house llvm-based toolchain. POC is OK, but a clean implementation is still far. * misc (conf-calls, meetings, emails, ....) - reviewing/submitted infra script patches - dealing with nasty ST-internal infrastructure problems - (GNU-592): improved benchmarking scripts - looking at new build servers configs == Next == FDPIC: - GCC: handle feedback on v4 patches - GDB: update patches - uclibc-ng: look at how to test fdpic mode with openadk Validation: - isolate if/why qemu-3.1.0-rc3 consumes more memory than 2.11 for aarch64-linux target

7 years, 1 month

1
0
0 0

[ACTIVITY] week ending Dec. 23 2018

by Alex Bennée

QEMU Tooling ([VIRT-252]) ========================= [VIRT-252] https://projects.linaro.org/browse/VIRT-252 QEMU plugin support ([VIRT-280]) - posted {PATCH v1 0/4} de-macrofy softmmu Message-Id: <20181217150116.10446-1-alex.bennee(a)linaro.org> - some follow up tweaks in [https://github.com/stsquad/qemu/tree/ldst/demacrofy-v2-more-fixes] [VIRT-280] https://projects.linaro.org/browse/VIRT-280 Upstream Work ([VIRT-109]) ========================== - reviewed {PATCH} target/arm: Emit barriers for A32/T32 load-acquire/store-release insns Message-Id: <20181210152850.435-1-peter.maydell(a)linaro.org> - posted {RFC PATCH} fpu: add compile time check for old glibc/libm and fma Message-Id: <20181220111008.24954-1-alex.bennee(a)linaro.org> - respin {PATCH v3 0/5} support reading some CPUID/CNT registers from user-space Message-Id: <20180625160009.17437-1-alex.bennee(a)linaro.org> :todo - in branch [https://github.com/stsquad/qemu/tree/misc/cnt-and-misc-reg-fixes-v3] - started re-working [system test and misc arch] tests - will be useful for test cases for plugins [VIRT-109] https://projects.linaro.org/browse/VIRT-109 [system test and misc arch] https://github.com/stsquad/qemu/tree/testing/enable-system-tcg-tests-v2 Completed Reviews [1/1] ======================= {PATCH} target/arm: Emit barriers for A32/T32 load-acquire/store-release insns Message-Id: <20181210152850.435-1-peter.maydell(a)linaro.org> Absences ======== - Happy Christmas see you next year! - Connect BKK19 (1-5th April 2019) - holiday after Connect Current Review Queue ==================== * {PATCH v8 00/20} Fixing record/replay and adding reverse debugging Message-Id: <20181218112056.11727.96529.stgit@pasha-VirtualBox> * {PATCH v5 0/3} Dynamic TLB sizing Message-Id: <20181214174233.18027-1-cota(a)braap.org> * {Qemu-devel} {PATCH v2 00/27} target/arm: Implement ARMv8.3-PAuth Message-Id: <20181214052410.11863-1-richard.henderson(a)linaro.org> * {PATCH v5 00/73} per-CPU locks Message-Id: <20181213050453.9677-1-cota(a)braap.org> * {RFC PATCH v3 00/24} KVM: arm64: SVE guest support Message-Id: <1544570941-7377-1-git-send-email-Dave.Martin(a)arm.com> * {RFC v2 00/38} Plugin support Message-Id: <20181209193749.12277-1-cota(a)braap.org> -- Alex Bennée

7 years, 1 month

1
0
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[PATCH 00/11] Implement ARMv8.5-BTI

by Richard Henderson

Posting this to an internal list because v8.5 is still NDA. There are a lot of holes to be filled wrt the user-level ABI. In the meantime, I have a cpu property to turn on GP for all pages. Which means that to test it, I provide a complete statically linked program, so that nothing uses indirect branches except that the ones I use myself. r~ Richard Henderson (11): target/arm: Introduce isar_feature_aa64_bti target/arm: Add PSTATE.BTYPE target/arm: Add BT and BTYPE to tb->flags target/arm: Record the GP bit for a page in MemTxAttrs target/arm: Default handling of BTYPE during translation target/arm: Reset btype for direct branches and syscalls target/arm: Set btype for indirect branches target/arm: Add guarded_pages cpu property for user-only target/arm: Enable BTI for -cpu max linux-user/aarch64: Reset btype for signal handlers tests/tcg/aarch64: Add bti smoke test include/exec/memattrs.h | 2 + target/arm/cpu.h | 22 +++- target/arm/internals.h | 6 + target/arm/translate.h | 9 ++ linux-user/aarch64/signal.c | 4 + target/arm/cpu64.c | 24 ++++ target/arm/helper.c | 28 +++-- target/arm/translate-a64.c | 196 +++++++++++++++++++++++++++++- tests/tcg/aarch64/bti-1.c | 61 ++++++++++ tests/tcg/aarch64/bti-crt.inc.c | 51 ++++++++ tests/tcg/aarch64/Makefile.target | 7 +- 11 files changed, 399 insertions(+), 11 deletions(-) create mode 100644 tests/tcg/aarch64/bti-1.c create mode 100644 tests/tcg/aarch64/bti-crt.inc.c -- 2.17.2

7 years, 1 month

1
11
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[ACTIVITY] Weekly report for week 50

by Thomas Preudhomme

=== Work done during the last week === * LLVM-432 (Support arithmetic on FileCheck regex variable): in progress + finished cleaning up code + rebase on top of trunk + fix all issues discovered with check-all + add detection of conflict between numeric variable and pattern variable + add memory management (yay for shared_ptr) * GNU-593 (Tied softfloat mul and div): upstream review + search for a non-elf arm target -> none seems supported * Fix issues with -mslow-flash-data: committed + finish testing patch for big endian and respond to upstream comments * GNU-598 (Do not select hardfloat when targeting Thumb-1 with mfpu set): upstream review + write and test patch, submit upstream * GNU-597 (pr77904.c test failure): upstream review + Investigate whether code added for PR77904 should be kept + test and submit patch for external review === Plan for week 51 === * DSGHACK-25 (Support arithmetic on FileCheck regex variable): + extend testcase coverage (add tests for latest syntax change and add more negative testing) + clean up the code written last week + improve documentation * Tied softfloat mul and div: + get it committed * GNU-598 (Do not select hardfloat when targeting Thumb-1 with mfpu set): + get it committed * GNU-597 (pr77904.c test failure): + get it committed * Try to reproduce perf issue mentioned in week #30's weekly report on latest perf

7 years, 1 month

1
0
0 0

[ACTIVITY] Week 50

by Yvan Roux

o 4 days week. o GNU releases: * Gave support for 6.5-2018.12-rc1 o LLVM * Tested and uploaded 7.0.1-rc3 ARM and AArch64 binaries * Machine Outliner on ARM prototype: - Fixed a bug in tailcall handling on ARM - Working on an issue with outlined calls through function pointers o Misc * Various meetings and discussions.

7 years, 1 month

1
0
0 0

[ACTIVITY] week ending Dec. 16 2018

by Alex Bennée

QEMU Tooling ([VIRT-252]) ========================= QEMU plugin support ([VIRT-280]) - port my example tools to his Emilio's framework :todo - there is now a {RFC v2 00/38} Plugin support Message-Id: <20181209193749.12277-1-cota(a)braap.org> to review - tracking regression in [softmmu demacro operation] - again I wish for better objdiffing tools with per-function resolution [VIRT-280] https://projects.linaro.org/browse/VIRT-280 [softmmu demacro operation] https://github.com/stsquad/qemu/tree/ldst/demacrofy-v1 Upstream Work ([VIRT-109]) ========================== - posted {RFC PATCH 00/13} Enabling tcg/tests for xtensa, mips and cris Message-Id: <20181210152829.29271-1-alex.bennee(a)linaro.org> - posted {PATCH v1 0/2} Fix kvm guest debugging of AA32 guests on AA64 Message-Id: <20181213115503.24188-1-alex.bennee(a)linaro.org> - prepared {PULL 00/15} Hardfloat + softfloat maintainers update and gitdm Message-Id: <20181214135452.25936-1-alex.bennee(a)linaro.org> [VIRT-109] https://projects.linaro.org/browse/VIRT-109 Other Tasks =========== - JIRA Tweaking - created [VIRT-326] to cover maintainer activities - moved [VIRT-65] and [VIRT-109] and created [VIRT-327] (for rth) - promoted [ARMv8.x] to initiative and the .n ticks to Epics - iterated {PATCH v3} contrib: add a basic gitdm config Message-Id: <20181214111032.2084-1-alex.bennee(a)linaro.org> - maybe as basis for maintainership metrics? - respin {PATCH v3 0/5} support reading some CPUID/CNT registers from user-space Message-Id: <20180625160009.17437-1-alex.bennee(a)linaro.org> :todo - in branch [https://github.com/stsquad/qemu/tree/misc/cnt-and-misc-reg-fixes-v3] [VIRT-326] https://projects.linaro.org/browse/VIRT-326 [VIRT-65] https://projects.linaro.org/browse/VIRT-65 [VIRT-109] https://projects.linaro.org/browse/VIRT-109 [VIRT-327] https://projects.linaro.org/browse/VIRT-327 [ARMv8.x] https://projects.linaro.org/browse/VIRT-241 Completed Reviews [0/0] ======================= Absences ======== - Christmas Holidays - Connect BKK19 (1-5th April 2019) Current Review Queue ==================== * {Qemu-devel} {PATCH v2 00/27} target/arm: Implement ARMv8.3-PAuth Message-Id: <20181214052410.11863-1-richard.henderson(a)linaro.org> * {PATCH v5 00/73} per-CPU locks Message-Id: <20181213050453.9677-1-cota(a)braap.org> * {RFC PATCH v3 00/24} KVM: arm64: SVE guest support Message-Id: <1544570941-7377-1-git-send-email-Dave.Martin(a)arm.com> * {RFC v2 00/38} Plugin support Message-Id: <20181209193749.12277-1-cota(a)braap.org> * {Qemu-devel} {PATCH v8 00/16} gdbstub: support for the multiprocess extension Message-Id: <20181207090135.7651-1-luc.michel(a)greensocs.com> * {RFC} arm: Allow system registers for KVM guests to be changed by QEMU code Message-Id: <20181206151401.13455-1-peter.maydell(a)linaro.org> -- Alex Bennée

7 years, 1 month

1
0
0 0

[ACTIVITY] week ending 16 Dec 2018

by Richard Henderson

Progress: [VIRT-246 # ARMv8.1-LOR Limited Ordering Regions ] Merged to target-arm.next. [VIRT-294 # ARMv8.3-PAuth, Pointer Authentication ] Posted v2. Now booting Will's kernel, which properly detects and enables support. Once that gets to mainline I'll add the prctl to linux-user/. [VIRT-339 # ARMv8.5-BTI, Branch Target Identification ] Started. [VIRT-327 # Richard's upstream QEMU work ] Put the ool softmmu patch set on hold for now, as that is not clearly ready when development opens again. Rebased all of the other queued tcg patch sets around that. Generated pull request. r~

7 years, 1 month

1
0
0 0

[ACTIVITY] report week ending Dec 14

by Peter Maydell

Progress: * VIRT-65 [QEMU upstream maintainership] - QEMU 3.1.0 finally released - sent out a couple of pull requests - some easy patches fixing more clang warnings about taking the address of a member in a packed struct - read through the Memory Tagging extension specification (and a bunch of arm-internal meetings etc this week) thanks -- PMM

7 years, 1 month

1
0
0 0

[ACTIVITY] 10 - 14 December 2018

by Peter Smith

[TCWG-1492] Add timeout and retry to git fetches in Linaro ci infrastructure. [LLVM-505] LLD implement --pic-veneer for AArch32 linux kernel (pr39886) In upstream review [LLVM-509] Add support for v6m range extension thunks to LLD In upstream review pr34928 fixed undefined weak reference handling for AArch64 Spent quite a bit of time revisiting cross-compilation of compiler-rt after helping out on llvm-dev. Posted a review D55709 to improve the documentation. Planned Absences Next 3 weeks on Christmas holiday back Monday 7th January

7 years, 1 month

1
0
0 0

[ACTIVITY] 10 - 14 December 2018

by Diana Picus

== Progress == GlobalISel support for Thumb2: # [LLVM-506] G_LOAD, G_STORE # [LLVM-500] G_ADD, G_SUB, G_MUL, G_AND, G_OR, G_XOR # [LLVM-516] G_SEXT, G_ZEXT, G_ANYEXT, G_TRUNC # G_INTTOPTR, G_PTRTOINT - Committed upstream # [LLVM-518] Support G_CONSTANT for Thumb - Started adding tests == Plan == # [LLVM-518] Support G_CONSTANT for Thumb

7 years, 1 month

1
0
0 0

[ACTIVITY] 10-14 December 2018

by Christophe Lyon

== Progress == * FDPIC - (GNU-499) GCC: wait for feedback on v4 patches - (GNU-411) GDB: will try to keep as much as possible in common with frv * GCC upstream validation: - reported a few regressions, helped testing some patches - dealing with some random results, still - qemu-3.1.0-rc3, memory consumption: no time to really look at the problem. Unable to match time's figures with LSF's * GCC: - (GNU-99) rebased ubsan / bare-metal patches. Trying to build an LLVM toolchain to see how to properly apply my patches: still trying, thanks to Peter Smith for the support! * misc (conf-calls, meetings, emails, ....) - reviewing/submitted infra script patches - ran Spec2006 on aarch32 using gcc-8.2 sysroot, on cortex-a57, results match the previous ones, so the improvements are only imputable to the compiler. 1 regression on gobmk (created GNU-596 to look at this) - dealing with nasty ST-internal infrastructure problems - (GNU-141) noinit/persistent attributes: they are already supported by GCC for TI msp430. The patches are small, plus one libgloss patch. - (GNU-592): started improving benchmarking scripts == Next == FDPIC: - GCC: handle feedback on v4 patches - GDB: update patches - uclibc-ng: look at how to test fdpic mode with openadk Validation: - isolate if/why qemu-3.1.0-rc3 consumes more memory than 2.11 for aarch64-linux target Misc: GNU-592

7 years, 1 month

1
0
0 0

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linaro-toolchain