== This Week ==
* GNU-659 (calculix)
- Comparing code-gen of hoisting region doesn't show many more extra stores
- Came up with two heuristics, which "fix" the issue, but aren't very general.
* LLVM-611
- D79785: Created fix for expensive checks issue, and posted on llvm-dev
- D87430: Posted patch for adding heuristic to LowerCall.
== Next Week ==
- Continue ongoing tasks
Hello Linaro Toolchain Working Group,
Do you plan to bring linaro-tk1-03 back online soon?
If not, I'll remove it from the LLVM buildbot this Friday.
Thanks
Galina
[VIRT-349 # QEMU SVE2 Support ]
Continuing the testing vs armie.
[VIRT-327 # Richard's upstream QEMU work ]
* More microblaze cleanup, including a check-acceptance
regression fix from the first pull. Ho hum.
* Patch review, queue is empty again.
* Old patch queue cleanup,
Fixed some gvec bugs affecting 32-bit x86;
testing vs aa32 risu.
r~
== This Week ==
* GNU-659 (calculix LTO regression)
- Gathered perf stats for various opt levels and posted on ML
* LLVM-611 (tune blx lowering heuristic)
- Dave Green committed my patch which had to be reverted due
to build-bot failure with expensive checks turned on.
- Posted analysis of the issue upstream
* Misc
- Committed patch to add --strict option to bmk-scripts/spec2xxx-config.
== Next Week ==
- Continue ongoing tasks
Progress: (short week, three days)
* VIRT-65 [QEMU upstream maintainership]
+ sent patches to remove QEMU's support for KVM on AArch32 hosts
(which we deprecated when the kernel removed its end of the support)
* VIRT-364 [QEMU support for ARMv8.1-M extensions]
+ fp16 work is now in master
+ sent patches to add support for mps2-an386 and mps2-an500
boards (Cortex-M4 and Cortex-M7 setups similar to the existing
mps2-an385 Cortex-M3 board model)
thanks
-- PMM
== This Week ==
* GNU-659 (LTO calculix regression)
- Started upstream discussion
* LLVM-611 (Tune lowering heuristic to blx for code size)
- Addressing upstream feedback for patch to fold tLDRpci, tBLx -> tBL
in foldMemoryOperand hook
- Added new heuristic to ISel, for follow up patch.
* LLVM-639 (Better idiom for comparing 32-bit values on arm)
- Started working on patch
== Next Week ==
- Continue ongoing tasks
1 day off
== Progress ==
* GCC upstream validation:
- reported several regressions
- committed testcase fixes
* GCC
- patch for PR94758 (-mpurecode and cortex-m23) applied to
thunk/gcc-10/gcc-9. Bug closed, but opened several others to track
performance improvements with -mpurecode
- PR96768: switch tables for thumb-1 with -mpure-code. Patch sent,
discussion on-going
- PR96769: WIP
- PR71233: missing ACLE intrinsics. I will first have to update the list
* benchmarking:
- Scripts to run coremark on stm32 now merged, working on using them
in production
* misc:
- infra patches/reviews
- internal support, leading to GCC testsuite cleanups for cortex-m
== Next ==
* GCC/cortex-M testing improvements & fixes
* cortex-m benchmarking
Progress:
* VIRT-65 [QEMU upstream maintainership]
+ Just the usual code review and pull request work.
* VIRT-364 [QEMU support for ARMv8.1-M extensions]
+ I have all fp16 insns (both VFP and Neon) implemented now, and the
VFP patches have been reviewed. Just need to track down a few last
test failures and then I can send the Neon patches out for review.
thanks
-- PMM
== Progress ==
* GCC upstream validation:
- reported several regressions
- committed testcase fixes
* GCC
- sent patch for PR94758 (-mpurecode and cortex-m23)
* benchmarking:
- Scripts to run coremark on stm32 now merged, working on using them
in production
* misc:
- infra patches/reviews
== Next ==
* GCC/cortex-M testing improvements & fixes
* cortex-m benchmarking
Progress (short week, 2 days):
* VIRT-65 [QEMU upstream maintainership]
+ We got 5.1 out the door. I think this is the first release
in the many years I've been handling them where we managed to
avoid needing an rc4.
+ Spent a fair amount of time helping Paolo to debug his conversion
of the QEMU build system to Meson. We managed to land that today.
+ First of the KVM Forum programme committee meetings
* VIRT-364 [QEMU support for ARMv8.1-M extensions]
+ More progress with fp16 support work; another handful of insns done.
thanks
-- PMM
[VIRT-327 # Richard's upstream QEMU work ]
Patch review, all over the place.
Patches for pauth impdef algorithm.
Patches for mte WnR bit.
Patches for crypto/cipher cleanup.
[VIRT-349 # QEMU SVE2 Support ]
Split out 20 patches from the SVE2 patch set.
r~
- 2 half days off
== Progress ==
* GCC upstream validation:
- reported several regressions (trunk and release branches)
- committed 2 testcase fixes
* GCC
- resumed work on PR94758 (-mpurecode and cortex-m23). Patch almost ready
* benchmarking:
- Scripts to run coremark on stm32 now merged, working on using them
in production
* misc:
- infra patches/reviews
== Next ==
* GCC/cortex-M testing improvements & fixes
* cortex-m benchmarking
VirtIO RPMB ([STR-5])
=====================
- got program_key and get_write_counter implemented
- finally making progress, the rest "should" be easy ;-)
[STR-5] <https://projects.linaro.org/browse/STR-5>
[testing kernel]
<http://git.linaro.org/people/alex.bennee/linux.git/shortlog/refs/heads/test…>
[qemu tree] <https://github.com/stsquad/qemu/tree/virtio/vhost-user-rpmb>
VirtIO Portability Demo ([STR-13])
==================================
- spent some time getting the MachiatoBin up and running
- system now working with latest 5.8 kernel and KVM support confirmed
- still debugging Xen setup, will return to this when back from
holidays
- currently no graphics available - need to perform [minor surgery] on
the PCI bus
[STR-13] <https://projects.linaro.org/browse/STR-13>
[minor surgery]
<http://wiki.macchiatobin.net/tiki-index.php?page=MACCHIATObin+%28up+to+rev+…>
Upstream Work ([QEMU-109])
==========================
- posted [PATCH v4 00/40] testing/next (vm, gitlab, fixes) Message-Id:
<20200701135652.1366-1-alex.bennee(a)linaro.org> : done
- posted [PULL 00/16] various fixes for rc2 (semihosting, tcg, docker,
tests/vm) Message-Id:
<20200727122357.31263-1-alex.bennee(a)linaro.org>
- a little leadership committee review
[QEMU-109] <https://projects.linaro.org/browse/QEMU-109>
Completed Reviews [2/2]
=======================
[PATCH RFC 00/10] fix some comment spelling errors
Message-Id: <20200812101500.2066-1-zhaolichang(a)huawei.com>
[PATCH 0/2] target/arm: Implement an IMPDEF pauth algorithm
Message-Id: <2219f3f9-7894-f898-0cad-43eccaa2a70d(a)linaro.org>
Absences
========
- short week
- holiday 13th-28th Aug - see you in September
Current Review Queue
====================
* [PATCH] plugins: new syscalls plugin
Message-Id: <20200812115816.4454-1-matthias(a)weckbecker.name>
Added: <2020-08-12 Wed>
* [PATCH v2 00/14] Reverse debugging
Message-Id: <159714365354.18946.2967871683340522027.stgit@pasha-ThinkPad-X280>
Added: <2020-08-11 Tue>
* [PATCH 00/11] Run cross-compilation build tests in the gitlab-CI
Message-Id: <20200804170055.2851-1-thuth(a)redhat.com>
Added: <2020-08-04 Tue>
* [RFC v3 0/8] QEMU cpus.c refactoring part2
Message-Id: <20200803090533.7410-1-cfontana(a)suse.de>
Added: <2020-08-03 Mon>
--
Alex Bennée
== Progress ==
* GCC upstream validation:
- reported a few regressions / minor testcase fix
* benchmarking:
- Created the Jenkins job to run coremark on stm32 (added/updated
scripts for that)
* misc:
- infra patches/reviews
== Next ==
* GCC/cortex-M testing improvements & fixes
* cortex-m benchmarking
I got an email and an irc ping for
http://lab.llvm.org:8011/builders/lldb-aarch64-ubuntu/builds/6924
My change has no relation to the test failure.
Flaky bots aren't allowed to send email or ping, so either make it
non-flaky or make it not send stuff.
Thanks,
Nico
[VIRT-327 # Richard's upstream QEMU work ]
Patch review -- lots of riscv vector stuff.
Fix for PAUTH error indication.
Diagnosed an MTE KASAN problem
-- my theory is a guest os thread error.
Investigation into PAUTH slowdown.
r~
Realised I missed last week so bumper update.
VirtIO Initiative ([STR-9])
===========================
- Inter-VM device emulation (call on Mon 20th July 2020) Message-Id:
<20200715112342.GD18817(a)stefanha-x1.localdomain>
- posted [RFC PATCH v1 0/3] put arm64 kvm_config on a diet Message-Id:
<20200804124417.27102-1-alex.bennee(a)linaro.org>
- EGL Call
- saw an interesting breakdown from other team doing vhost-user
- OpenSynergy
- got a good idea of where they are heading and the various players
[STR-9] <https://projects.linaro.org/browse/STR-9>
VirtIO RPMB ([STR-5])
=====================
- got the return path working
- re-based my [testing kernel] and made more spec conforming tweaks
[STR-5] <https://projects.linaro.org/browse/STR-5>
[simplified testing branch]
<http://git.linaro.org/people/alex.bennee/linux.git/shortlog/refs/heads/revi…>
[kernel]
<http://git.linaro.org/people/alex.bennee/linux.git/shortlog/refs/heads/revi…>
[testing kernel]
<http://git.linaro.org/people/alex.bennee/linux.git/shortlog/refs/heads/test…>
VirtIO Portability Demo ([STR-13])
==================================
- spent some time getting the MachiatoBin up and running
[STR-13] <https://projects.linaro.org/browse/STR-13>
Upstream Work ([QEMU-109])
==========================
- posted [PATCH v4 00/40] testing/next (vm, gitlab, fixes) Message-Id:
<20200701135652.1366-1-alex.bennee(a)linaro.org> : done
- Debugging a failure on m68k with pgd_find_hole_fallback
- seems 4.17+ with no /proc leave mmap_min_addr = 0 and NOREPLACE
hits it
- rth pondering a fix, may get back to it on Monday
- More debugging of icount bug, looks like -icount sleep=off interacts
with [bug 1859021]
- posted [PULL 00/16] various fixes for rc2 (semihosting, tcg, docker,
tests/vm) Message-Id:
<20200727122357.31263-1-alex.bennee(a)linaro.org>
[QEMU-109] <https://projects.linaro.org/browse/QEMU-109>
[bug 1859021] <https://bugs.launchpad.net/qemu/+bug/1859021>
Completed Reviews [6/6]
=======================
[PATCH v2 0/2] linux-user: fix clock_nanosleep()
Message-Id: <20200722174612.2917566-1-laurent(a)vivier.eu>
- CLOSING NOTE [2020-07-24 Fri 21:47]
Queued to my tree
Added: <2020-07-22 Wed>
[PATCH v1 0/3] python/qemu: follow-up changes for ConsoleSocket
Message-Id: <20200717203041.9867-1-robert.foley(a)linaro.org>
- CLOSING NOTE [2020-07-24 Fri 21:47]
Queued to my tree
Added: <2020-07-18 Sat>
[virtio-dev] [PATCH v5 00/10] introduce virtio vhost-user backend device type
Message-Id: <20200518203721.7625-1-ndragazis(a)arrikto.com>
- CLOSING NOTE [2020-07-24 Fri 21:48]
Interesting stuff, sent a few terminology fixes
Added: <2020-07-15 Wed>
[PATCH v2] cputlb: Make store_helper less fragile to compiler optimizations
Message-Id: <20200724195128.2373212-1-scw(a)google.com>
[PATCH 0/4] Refactor get_fpstatus_ptr() ready for AArch32 fp16
Message-Id: <20200806104453.30393-1-peter.maydell(a)linaro.org>
[DRAFT PATCH 000/143] Meson integration for 5.2
Message-Id: <1596741379-12902-1-git-send-email-pbonzini(a)redhat.com>
Absences
========
- 2 days off sick
- "holiday" 13th-25th Aug
Current Review Queue
====================
* [PATCH 00/11] Run cross-compilation build tests in the gitlab-CI
Message-Id: <20200804170055.2851-1-thuth(a)redhat.com>
Added: <2020-08-04 Tue>
* [RFC v3 0/8] QEMU cpus.c refactoring part2
Message-Id: <20200803090533.7410-1-cfontana(a)suse.de>
Added: <2020-08-03 Mon>
* [PATCH 0/2] accel/tcg: remove implied BQL from cpu_handle_interrupt/exception path
Message-Id: <20200731125127.30866-1-robert.foley(a)linaro.org>
Added: <2020-07-31 Fri>
* [PATCH 0/3] float16 APIs and alternative sNaN handling
Message-Id: <1596102747-20226-1-git-send-email-chihmin.chao(a)sifive.com>
Added: <2020-07-30 Thu>
--
Alex Bennée
Progress:
* VIRT-65 [QEMU upstream maintainership]
+ rc3 sent out. Optimistically hoping for release next week.
+ rebased the patchset converting QAPI doc-comments to rST
+ Fixed a bug in syndrome register values for copro insns trapped
from AArch32 to AArch64
* VIRT-364 [QEMU support for ARMv8.1-M extensions]
+ Finished and sent out the patchset that cleans up the coproc
insn decode and corrects the NOCP handling
+ With assistance from RTH, figured out how to use gvec helpers
to implement fp16 for various Neon insns. Added fp16 support to
20 or so insns; still have 15 or so to go.
thanks
-- PMM
Progress:
* VIRT-65 [QEMU upstream maintainership]
+ More release herding...
+ Sent fixes for some bugs:
- assertion in the imx_epit timer device when guest soft-reset it
- netduino2/netduinoplus2 forgot to configure system clock scale so
using SysTick in "run at CPU frequency" mode would hang
- most M-profile boards failed to make AIRCR.SYSRESETREQ actually
reset the system
* VIRT-364 [QEMU support for ARMv8.1-M extensions]
+ More progress with fp16: all the VFP insns now handled, including
the new-for-fp16 ones. Still to do: all of Neon...
+ Spent some time working through the details of NOCP vs UNDEF
in the M-profile coprocessor space for the various revisions
of the architecture. v8.1M adjusts things a bit in this area
and I want to clean up this bit of QEMU's current code and
get the v8.1M bits right.
Fact: next Monday (3rd August) will be the 10th anniversary
of my secondment into Linaro!
-- PMM
[VIRT-327 # Richard's upstream QEMU work ]
Misc patch review.
- Largest bit is half of riscv 0.9 vector patch set.
Fix arm E2 bug in ptw_translate.
Fix arm E3 buts in direct kernel startup.
Fix linux-user chroot failure.
r~
