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