[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.
[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~
== 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
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
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
== 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
== 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
[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~
- 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
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.
