- linaro-toolchain - lists.linaro.org

[ACTIVITY] 15 April - 19 April 2019

by Prathamesh Kulkarni

== This Week == * GCC PR88837 (7/10) - Trying different approaches for shortest initialization of vector constructor * Public Holiday (2/10) * Misc (1/10) - Meetins == Next Week == - GCC PR88837 - GNU-606

6 years, 2 months

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[ACTIVITY] 15 - 19 April 2019

by Diana Picus

== Progress == * Short week (Out of office 18 - 19 April) * LLVM 7.1.0 Release for ARM & AArch64 [LLVM-546] - Uploaded binaries for both ARM & AArch64 * [GlobalISel] Better support for small types [LLVM-553] - Still in progress (currently investigating a bug) * Catching up on Connect == Plan == * Back at work on Thursday, April 25th

6 years, 2 months

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[ACTIVITY] report week ending 16 Apr

by Peter Maydell

Progress: (very short week, 2 days) * VIRT-65 [QEMU upstream maintainership] + QEMU release work: flurry of last minute stuff for rc3. I hoped we would not need an rc4, but as usual a release-critical issue was found, so we will be having one. + code review * VIRT-268 [QEMU support for dual-core Cortex-M Musca board] + worked through some final bug fixes + sent out v1 of the FP support patchset for review thanks -- PMM

6 years, 2 months

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[ACTIVITY] Week 15

by Yvan Roux

o Short post-connect week with EuroLLVM o LLVM * Bots babysitting.

6 years, 2 months

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[ACTIVITY] report week ending 12 Apr

by Peter Maydell

(Previous week was Connect.) Progress: (short week, 3 days) * VIRT-65 [QEMU upstream maintainership] + QEMU release work: flurry of last minute stuff for rc3. I hoped we would not need an rc4, but as usual a release-critical issue was found, so we will be having one. + code review thanks -- PMM

6 years, 2 months

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[ACTIVITY] 8-12 April 2019

by Christophe Lyon

== Progress == * FDPIC - Experimenting with stm32f469-disco. It seems recent gdbserver is now too large to load (issues when trying to map libstdc++.so while attempting to load a simple hello.c) * GCC upstream validation: - little activity this week, close to e/o stage 4 * GCC - ubsan on bare-metal toolchain: experimenting with multlibs * Infra - improved reporting of some jobs, improved error handling == Next == More of the on-going tasks

6 years, 2 months

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[ACTIVITY] Report: end of week 15: 12th of April

by Beata Michalska

Progress: - Rather short one: Slowly getting up to speed with internal setup: accounts, accesses, communication channels, mailing lists etc. BR BM

6 years, 2 months

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[ACTIVITY] 8 April 2019 - 12 April 2019

by Prathamesh Kulkarni

== This Week == * PR88837 (9/10) - Addressing patch reviews from Richard. * Misc (1/10) - Committed patch to add support for bootstrap-lto-lean config to jenkins-scripts. - Meetings == Next Week == - Continue ongoing tasks

6 years, 2 months

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[ACTIVITY] 8 - 12 April 2019

by Diana Picus

== Progress == * LLVM 7.1.0 Release for ARM & AArch64 [LLVM-546] - Final candidate build in progress * [GlobalISel] Map and select G_FCONSTANT [LLVM-552] - Committed upstream * [GlobalISel] Better support for small types [LLVM-553] - In progress == Plan == * LLVM-546, LLVM-553

6 years, 2 months

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[ACTIVITY] Week ending Thursday 11th April 2019

by Peter Smith

[Conferences] Linaro connect and EuroLLVM. Please see trip reports already posted. A bit of a gruelling week of Travel going from Bangkok straight to Brussels, with just a short half a day in between at home in Cambridge. [Activity] - A number of reviews whilst away - Started looking at how to build an embedded toolchain with Linaro's ABE and work out how to fit it into their infrastructure. Planned Absences Holiday 12- 16th, back on Wednesday.

6 years, 2 months

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[ACTIVITY] 1-5 April 2019

by Christophe Lyon

== Progress == * FDPIC - Experimenting with stm32f469-disco * GCC upstream validation: - reported a few regressions * GCC - ubsan on bare-metal toolchain: enabling more multilibs triggered an assert in the linker. * Infra - improved reporting of some 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 update

6 years, 2 months

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[ACTIVITY] 1 - 5 April 2019

by Diana Picus

== Progress == * LLVM 7.1.0 Release for ARM & AArch64 [LLVM-546] - Uploaded RC1 for both ARM & AArch64 * [GlobalISel] Support debug info [LLVM-549] - Added support for DBG_VALUE, seems to be enough for now * [GlobalISel] Map and select G_FCONSTANT [LLVM-552] - In progress * IR SVE Reviews [LLVM-545] - More reading, discussions etc == Plan == * More of the same

6 years, 2 months

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[ANNOUNCE] Arm Binary A-profile Toolchain Release GCC 8.3-2019.03

by Przemyslaw Wirkus

The Arm GNU Toolchain for the A-profile Architecture ===================================================== The Arm GNU Toolchain for the A-profile Architecture 8.3-2019.03 Release is now available. Arm is pleased to announce the Arm-built release of the pre-built GNU cross-toolchain for the A-profile cores: GCC 8.2-2019.03. This is the same toolchain that was previously built and distributed by Linaro. For the official initial 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/tools-and-software/open-source-software/developer… 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 of GCC 7 and earlier are available 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 8.3 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 3.1.0 https://sourceware.org/ml/newlib/2018/msg00019.html GNU Binutils 2.32 https://lists.gnu.org/archive/html/info-gnu/2019-02/msg00000.html FSF GDB 8.2.1 https://www.gnu.org/software/gdb/download/ANNOUNCEMENT libexpat 2.2.5 https://github.com/libexpat/libexpat/blob/R_2_2_5/expat/Changes Linux Kernel v4.19 https://lkml.org/lkml/2018/10/22/184 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 releases contain .la files.". https://bugs.linaro.org/show_bug.cgi?id=4249 * Fix for "gcc-arm-8 mingw32 releases contain symlinks". https://bugs.linaro.org/show_bug.cgi?id=4251 * Fix for "gcc-arm-8.2-2019.01 release uses gdb-8.1 instead of gdb-8.2". https://bugs.linaro.org/show_bug.cgi?id=4253 * Fix for "ARM Toolchain use a Linux kernel headers -rc release" https://bugs.linaro.org/show_bug.cgi?id=4297 * Each binary release file now contains manifest.txt file with configuration flags for each toolchain component. * Additional Linaro ABE manifest files to build x86_64 host toolchains. * Experimental multilib support for arm-eabi toolchain (multilib a+rm-profile with newlib-nano enabled). For more details about Spectre V1 mitigation 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/

6 years, 2 months

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[ACTIVITY] week ending 31 Mar 2019

by Richard Henderson

[VIRT-263 # ARMv8.1-VHE Virtual Host Extensions ] More progress, but still crashing early. Crashes on first memory access after swapping ttbr1. Debugging kernel on guest and qemu on host simultaneously. So far, all the numbers look right but still boom. [VIRT-339 # ARMv8.5-BTI, Branch Target Identification ] Posted a v4 using the PT_NOTE, but still RFC-ish due to missing abi for new mmap flag. [VIRT-327 # Richard's upstream QEMU work ] Posted v1+v2 of CPUNegativeOffsetState. Posted v1 of a cleanup of target/riscv wrt decodetree. [Other] Upgraded the laptop from fedora 27 (out of support now), to ubuntu 18.04 lts. r~

6 years, 2 months

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[ACTIVITY] Week ending Friday 29th March 2019

by Peter Smith

[Activity] [LLVM-542] Compiling zephyr with clang - Prepared for presentation/discussion with colleagues at Connect next week. - Made the installation process a bit more repeatable - Added support for -Oz [Intel-CET] patches to LLD (similar to BTI) - Code-owner has redesigned the patches and they look a lot better and more likely to go in. Shouldn't be too difficult to build BTI on top of. [LLVM-523] .ARM.exidx redesign - Now committed, and has stuck for at least a day without needing to be reverted. Linaro Connect - Preparations for hack room - Gave dry run of presentation for Doughnuts. Will need to cut out some material to get through in time. Next week: At Linaro Connect Then at EuroLLVM Then most likely on holiday for remainder of that week.

6 years, 2 months

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[ACTIVITY] 25-29 March 2019

by Christophe Lyon

== Progress == * FDPIC - Discovered that my stm32f429-disc1 board is not suitable for recent Linux kernels (too large). Will experiment with stm32f469-disco * GCC upstream validation: - reported a few regressions * misc (conf-calls, meetings, emails, ....) - reviewed infra script patches - fixed small issues after adding QEMU as a toolchain component in ABE - added jobs to monitor Jenkins slaves - fixed issues in benchmarking scripts == 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 update

6 years, 2 months

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[ACTIVITY] 25 - 29 March 2019

by Diana Picus

== Progress == * LLVM 7.1.0 Release for ARM & AArch64 [LLVM-546] - Fixed our infra scripts to work for 7.1.0 (looks like it's the first ever minor release since the new numbering scheme was introduced) - AArch64 is ready and green, ARM still in progress * [Thumb GlobalISel] Bugfixes [LLVM-544] - Committed the patch for alignment issues and 2 other patches for 1-bit value handling - Selfhosted clang now passes check-all * IR SVE Reviews [LLVM-545] - More reading, installed armie etc == Plan == * More of the same

6 years, 2 months

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Cross compiling QEMU for aarch64

by Rohit Khanna

Hi, I am trying to cross-compile QEMU for aarch64 target using the below toolchain http://releases.linaro.org/components/toolchain/binaries/4.9-2016.02/aarch6… ../configure --target-list=aarch64-softmmu --enable-kvm --enable-vhost-net --cross-prefix=~/Downloads/gcc-linaro-4.9-2016.02-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu- ERROR: pkg-config binary '/home/rokhanna/Downloads/gcc-linaro-4.9-2016.02-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-pkg-config' not found QEMU - https://github.com/qemu/qemu Any pointers on where I can find pkg-config? Thanks in advance. Thanks Rohit ----------------------------------------------------------------------------------- This email message is for the sole use of the intended recipient(s) and may contain confidential information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply email and destroy all copies of the original message. -----------------------------------------------------------------------------------

6 years, 2 months

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Re: Cross compiling QEMU for aarch64

by Rohit Khanna

Thanks Wookey and Richard. I was able to resolve the pkg-config issue after installing it with - apt install pkg-config-aarch64-linux-gnu I modified my configure command to below - ./configure --target-list=aarch64-softmmu --enable-kvm --enable-vhost-net --cross-prefix=aarch64-linux-gnu- Now I am running into dependency issue on glib-2.4 and gthread-2.0. rokhanna@rokhanna-dev ~/dev/qemu.git $ ./configure --target-list=aarch64-softmmu --enable-kvm --enable-vhost-net --cross-prefix=aarch64-linux-gnu- ERROR: glib-2.40 gthread-2.0 is required to compile QEMU Thanks Rohit ________________________________ From: Richard Henderson <richard.henderson(a)linaro.org> Sent: Thursday, March 21, 2019 9:31 PM To: Rohit Khanna; linaro-toolchain(a)lists.linaro.org Cc: Santosh Shukla Subject: Re: Cross compiling QEMU for aarch64 On 3/21/19 4:45 PM, Rohit Khanna wrote: > Hi, > > I am trying to cross-compile QEMU for aarch64 target using the below toolchain http://releases.linaro.org/components/toolchain/binaries/4.9-2016.02/aarch6… > > > ../configure --target-list=aarch64-softmmu --enable-kvm --enable-vhost-net --cross-prefix=~/Downloads/gcc-linaro-4.9-2016.02-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu- > > ERROR: pkg-config binary '/home/rokhanna/Downloads/gcc-linaro-4.9-2016.02-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-pkg-config' not found First, "--cross-prefix=aarch64-linux-gnu-". It is a prefix, not a path. You should have "$HOME/Downloads/gcc-linaro-4.9-2016.02-x86_64_aarch64-linux-gnu/bin" in your path in order to use that compiler. Second, pkg-config is not part of a toolchain, but part of an entire OS distribution. If your host is debian or ubuntu, they ship a version configured for aarch64 cross-compilation. Which is helpful because... Third, you're going to need a *lot* of aarch64 libraries in order to build QEMU. This is where OS support for cross-toolchains is key. r~ ----------------------------------------------------------------------------------- This email message is for the sole use of the intended recipient(s) and may contain confidential information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply email and destroy all copies of the original message. -----------------------------------------------------------------------------------

6 years, 2 months

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[ACTIVITY] report week ending 28 Mar

by Peter Maydell

Progress: (short week, 3 days) * VIRT-65 [QEMU upstream maintainership] + reviewed a few patchsets that had been lurking in my queue too long + trawled through the QEMU bug system for bugs we'd already fixed and forgotten to close, bugs which need more info from the submitter, and bugs which were very easy to fix + various other release related work * Preparation for Connect next week thanks -- PMM

6 years, 2 months

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[ACTIVITY] Week ending 23rd March 2019

by Peter Smith

Linaro connect preparation: - Finished Linaro Connect presentation on cross compilation with clang -- Hoping to do a dry-run at Doughnuts this week assuming we can resolve a potential clash with the IPG hands-on. - Draft agenda for the hack-room produced. [LLVM-523] ARM.exidx redesign - Got approval, committed and then reverted my exceptions redesign due some build-bot failures. Found another potential problem with --emit-relocs that may be a bit more difficult to fix. [BTI] Continuing to review and make suggestions for Intel CET patch (pre-requisite for BTI due to common use of .note.gnu.property sections) Some more communication with Linux Kernel port to Arm with respect to assembler problems.

6 years, 3 months

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[ACTIVITY] Week 12

by Yvan Roux

o LLVM * Machine outliner: - Debugging issue in LLVM bootstrap. - Preparing BKK19 Hacking session presentation. o Misc * Various meetings and discussions.

6 years, 3 months

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[ACTIVITY] 18 March - 22 March 2019

by Prathamesh Kulkarni

== This Week == * PR88837 (2/10) - Started investigating the bug * Validation (2/10) - tcwg_gnu: Merged into master and added profiledbootstrap. - ABE cleanup patch to remove --enable bootstrap option * TCWG-1508 (1/10) - Investigated merge failure, Uros's suggested patch fixes the issue. * Public Holidays (4/10) * Misc (1/10) - Meetings == Next Week == - Continue ongoing tasks

6 years, 3 months

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[ACTIVITY] week ending 24 Mar 2019

by Richard Henderson

[VIRT-263 # ARMv8.1-VHE Virtual Host Extensions ] Picked up my partial patch set and started on it again. It is improved by having done the pauth/bti/mte work. But still a work in progress. [VIRT-327 # Richard's upstream QEMU work ] Version 3 of tcg/ppc vector instructions. Reviewed target/rx v4. Fixed thread=single expansion of casp after Alex did all the hard work tracking down the kernel failure, and writing me a test case. Looking into the size of the softmmu tlb expansion. Current thinking is to move tlb out of CPUArchState into a new struct that precedes env, so that the tlb is at small negative offsets from env, so that {mask, table} is loadable with LDP/LDRD. r~

6 years, 3 months

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[ACTIVITY] week ending Mar. 24 2019

by Alex Bennée

Upstream Work ([VIRT-109]) ========================== - posted some CI clean-ups for next 4.0-rc - posted {PATCH v1 0/3 for 4.0} reduce timeouts on Travis Message-Id: <20190319124800.7454-1-alex.bennee(a)linaro.org> - posted {PATCH} .travis.yml: reduce number of targets built while disabling things Message-Id: <20190321124857.28132-1-alex.bennee(a)linaro.org> - will send PR on Monday - while testing {Qemu-devel} {PATCH 3/4} memory: introduce memory_global_after_dirty_log_sync Message-Id: <20180209104546.29401-4-pbonzini(a)redhat.com> - discovered regression -cpu max -accel tcg,thread=single with ARM64_LSE_ATOMICS kernel breaks - this is likely due to different code paths for non-MTTCG atomics - however attempts [to reproduce in linux-user] have so far drawn a blank - have notified rth who can hopefully find the problem [VIRT-109] https://projects.linaro.org/browse/VIRT-109 [to reproduce in linux-user] https://github.com/stsquad/qemu/tree/for-4.0/mttcg-and-lse-atomics Other ===== - more work on Connect presentation Absences ======== - Connect BKK19 (1-5th April 2019) - holiday after Connect Current Review Queue ==================== * {Qemu-devel} {multiprocess RFC PATCH 00/37} Initial support of multi-process qemu Message-Id: <20190307072025.8041-1-elena.ufimtseva(a)oracle.com> * {Qemu-devel} {PATCH 0/6} Refine exec Message-Id: <20190321082555.21118-1-richardw.yang(a)linux.intel.com> * {PATCH v5 00/26} KVM: arm64: SVE guest support Message-Id: <1553017938-710-1-git-send-email-Dave.Martin(a)arm.com> * {PATCH v4 00/19} Acceptance Tests: target architecture support Message-Id: <20190312121150.8638-1-crosa(a)redhat.com> * {PATCH 0/5} travis-ci: Build EDK2 roms Message-Id: <20190311003052.13778-1-philmd(a)redhat.com> * {RFC v2 00/38} Plugin support Message-Id: <20181209193749.12277-1-cota(a)braap.org> -- Alex Bennée

6 years, 3 months

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[ACTIVITY] report week ending 22 Mar

by Peter Maydell

Progress: * VIRT-65 [QEMU upstream maintainership] + tagged rc0 for QEMU 4.0.0; various other release-ish work * VIRT-268 [QEMU support for dual-core Cortex-M Musca board] + more progress with FP support: lazy state saving and the vlldm/vlstm insns now implemented. FP support is now feature-complete, though some bugs likely remain to be fixed. * A day or so taken up by move to a new desktop machine (but builds should go faster now!) NB: I'm not working on Wednesday or Friday next week. thanks -- PMM

6 years, 3 months

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[ACtiVITY] 18 - 22 March 2019

by Diana Picus

== Progress == * LLVM 8.0.0 Release for ARM & AArch64 [LLVM-526] - LLVM 8.0.0 is out! * [Thumb GlobalISel] Bugfixes [LLVM-544] - Patch for alignment issues ready to commit next week - With the patch, we can build clang successfully, but it fails some of its tests - Investigated one of the tests, it's failing because we end up representing 'true' as '-1'. Going to prepare a patch for that next week * IR SVE Reviews [LLVM-545] - Reviewed D32530 - Scalable Vector IR Type * Buildbot babysitting - Reported some failures upstream - Complained about non-deterministic libfuzzer tests == Plan == * LLVM-544, LLVM-545

6 years, 3 months

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[ACTIVITY] 18-22 March 2019

by Christophe Lyon

== Progress == * FDPIC - Setting up new stm32f429-disc1 board. Still not working with recent kernel * GCC upstream validation: - reported a few regressions * GCC: - (GNU-99) ubsan / bare-metal. No progress. * misc (conf-calls, meetings, emails, ....) - reviewing infra script patches - added qemu as a toolchain component supported by ABE. - merged tcwg_bmk branch into master == 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 update

6 years, 3 months

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[ACTIVITY] Week ending 15th March 2019

by Peter Smith

[LLVM-542] Compiling zephyr with clang - Shared patches with Zephyr team lead, who has integrated them into a private branch and has locally fixed some of the incompatibilities/warnings - Went through the Zephyr samples to get build instructions for the ones compatible with Arm dev-boards. [Intel-CET] patches to LLD (similar to BTI) - Reviewed patches and made suggestion for an alternative design. Will need to re-review the follow up this week. [LLVM-523] .ARM.exidx redesign - Responded to review comments, will need to ping again this week. Linaro Connect - Preparations for hack room - Started on Presentation on cross compilation, need to finish slides this week.

6 years, 3 months

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[ACTIVITY] week ending 17 Mar 2019

by Richard Henderson

[VIRT-343 # ARMv8.5-RNG, Random Number Generator ] Three versions posted, with good review on the crypto side. Generalized our existing infrastructure to use crypto quality numbers by default, and decent deterministic numbers when given the -seed command-line argument. Converted our existing hw random number devices; implemented the AA64 registers; filled in the PPC64 stubs; implemented the X86 tcg insns. [VIRT-327 # Richard's upstream QEMU work ] Reviewed and revised some target/hppa patches from Sven. Final pull request for hppa for 4.0. Final pull request for decodetree. Revised the tcg extract2 patch set; delay this for 4.1. r~

6 years, 3 months

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[ACTIVITY] 11 March - 15 March 2019

by Prathamesh Kulkarni

== This Week == * PR88839 (8/10) - Addressing suggestions by Richard. - Patch works for all cases except for VNx2DI/VNx2DF modes. I have a workaround for those two cases but investigating for a better approach. * Validation (1/10) - Submitted patches to merge tcwg_gnu branch into master for jenkins-scripts/ * Misc (1/10) - Meetings == Next Week == - Continue ongoing tasks

6 years, 3 months

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[ACTIVITY] week ending Mar. 17 2019

by Alex Bennée

Upstream Work ([VIRT-109]) ========================== - posted {PATCH} scripts/qemugdb: re-license timers.py to GPLv2 or later Message-Id: <20190311165538.6623-1-alex.bennee(a)linaro.org> - started discussion on the state of QEMU CI Message-Id: <6D897F0B-D7A6-4A16-93E0-3F68FF53B0BE(a)euphon.net> - looked at GitLab's runners as an CI scaling option - looks like [arm64 support has somewhat stalled] - spammed Peter with PRs for Tuesday's softfreeze - posted {PULL 00/26} final testing updates for 4.0 Message-Id: <20190312170931.25013-1-alex.bennee(a)linaro.org> - including {PATCH v2 0/7} testing/next for softfreeze Message-Id: <20190312105547.4755-1-alex.bennee(a)linaro.org> - and {PATCH v4 00/21} final tcg tests for 4.0 Message-Id: <20190312155947.14918-1-alex.bennee(a)linaro.org> - posted {PULL 0/5} gitdm updates for 4.0 Message-Id: <20190312193458.9171-1-alex.bennee(a)linaro.org> [VIRT-109] https://projects.linaro.org/browse/VIRT-109 [arm64 support has somewhat stalled] https://gitlab.com/gitlab-org/gitlab-runner/merge_requests/725 Other ===== - more work on Connect presentation Completed Reviews [1/1] ======================= {Qemu-devel} {PATCH} ci: store Patchew configuration in the tree Message-Id: <20190315091941.23669-1-pbonzini(a)redhat.com> Absences ======== - Connect BKK19 (1-5th April 2019) - holiday after Connect Current Review Queue ==================== * {PATCH v4 00/19} Acceptance Tests: target architecture support Message-Id: <20190312121150.8638-1-crosa(a)redhat.com> * {PATCH 0/5} travis-ci: Build EDK2 roms Message-Id: <20190311003052.13778-1-philmd(a)redhat.com> * {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> -- Alex Bennée

6 years, 3 months

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[ACTIVITY] report week ending 15 Mar

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, 3 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, 3 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, 3 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, 3 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, 3 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, 3 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, 3 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, 3 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, 3 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, 3 months

1
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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, 3 months

1
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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, 3 months

1
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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, 3 months

1
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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, 3 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, 3 months

1
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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, 3 months

1
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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, 3 months

1
0
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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, 3 months

1
0
0 0

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