== This Week ==
* GCC
- PR89007: Posted patch upstream.
- GNU-583: Worked with Kugan, to reproduce LTO failure and verified
his patch fixes it.
- Bug 5479: Investigated with Maxim, most likely a glibc issue.
* Validation:
- Posted abe patch to add --gcc_patch_file option.
== Next Week ==
- Continue ongoing tasks.
Monday off
== Progress ==
* GCC:
- -mpure-code on v6m: answered questions about my patch. Almost OK
* Linker:
- started looking at implementing non-contiguous memory support
* GCC upstream validation:
- reported several issues
* misc:
- infra fixes / troubleshooting / reviews
== Next ==
* GCC: pure-code/v6m, handle feedback
* Binutils: support non-contiguous memory regions in linker
[Morello]
- Dynamic linking implementation complete and tests written based on
GNU ld output.
- Good progress on refactoring the work prior to breaking it down into
reviewable chunks. Have got a good idea of what I'd like the
implementation to look like.
TODO:
- Finish refactoring patches.
- Rebase into reviewable patches.
- Document the design decisions.
- Test on more than just the examples in the toolchain.
- Rebase on top of latest CUCL drop when merge is finished.
[Other]
LLVM-MC upstream review for the Linux Kernel.
QEMU Tooling ([VIRT-252])
=========================
QEMU plugin support ([VIRT-280])
- feature now merged in 4.2
- closed out a bunch of related JIRA cards
- API version now merged and this card is closed
Extend gdbstub for SVE ([VIRT-281])
- posted {RFC PATCH 00/11} gdbstub re-factor and SVE support
Message-Id: <20191115173000.21891-1-alex.bennee(a)linaro.org>
[VIRT-281] https://projects.linaro.org/browse/VIRT-281
[working prototype]
https://github.com/stsquad/qemu/tree/gdbstub/sve-registers
Upstream Work ([VIRT-109])
==========================
- posted {PULL 0/8} testing and tcg plugin api ver Message-Id:
<CAFEAcA_9AwoTE9zaKbiF6DkpN+O8LaEKGOct-m5S3yvFBHGK1g(a)mail.gmail.com>
- posted {PATCH for 4.2-rc2 v1 0/5} misc doc and testing fixes
Message-Id: <20191113115952.775-1-alex.bennee(a)linaro.org>
- posted {RFC PATCH} scripts/tap-driver: report "slow" tests (HACK)
Message-Id: <20191113142101.30280-1-alex.bennee(a)linaro.org>
Other Activities
================
- wrote [draft of KVM Forum conference report]
[draft of KVM Forum conference report]
https://collaborate.linaro.org/pages/resumedraft.action?draftId=128647720
Completed Reviews [5/5]
=======================
{PATCH 0/2} replace sysconf(_SC_PAGESIZE) with qemu_real_host_page_size
Message-Id: <20191015031350.4345-2-richardw.yang(a)linux.intel.com>
{PATCH v2 0/4} arm/aspeed: Watchdog and SDRAM fixes
Message-Id: <20191113005201.19005-1-joel(a)jms.id.au>
{kvm-unit-test PATCH 0/5} Improvements for the Travis CI
Message-Id: <20191113112649.14322-6-thuth(a)redhat.com>
{PATCH} target/arm: Clean up arm_cpu_vq_map_next_smaller asserts
Message-Id: <20191115131623.322-1-richard.henderson(a)linaro.org>
{PATCH v1 0/5} Make the qemu_logfile handle thread safe.
Message-Id: <20191112150105.2498-1-robert.foley(a)linaro.org>
Current Review Queue
====================
* {PATCH v2 0/6} Make the qemu_logfile handle thread safe.
Message-Id: <20191115131040.2834-1-robert.foley(a)linaro.org>
Added: <2019-11-15 Fri>
* {PATCH 0/1} tests/vm: Allow to set path to qemu-img
Message-Id: <20191114134246.12073-1-wainersm(a)redhat.com>
Added: <2019-11-14 Thu>
* {PATCH v7 0/8} Acceptance test: Add "boot_linux" acceptance test
Message-Id: <20191104151323.9883-1-crosa(a)redhat.com>
Added: <2019-11-04 Mon>
* {RFC 0/3} tests/vhost-user-fs-test: add vhost-user-fs test case
Message-Id: <20191025100152.6638-1-stefanha(a)redhat.com>
Added: <2019-10-25 Fri>
--
Alex Bennée
Progress:
* VIRT-65 [QEMU upstream maintainership]
- wrote up first draft of requirements for the better CI setup for
testing pull request merge builds
(https://wiki.qemu.org/Requirements/GatingCI)
- wrote up version of the QEMU Summit minutes that includes enough
context to make sense to people who weren't present; plan to
send to qemu-devel next Friday
- got 4.2 rc1 out of the door; this release seems to be pleasantly
quiet for a change.
thanks
-- PMM
== Progress ==
* Committed SVE-related fix for InstCombine
* Started triaging check-lldb failures on AArch64 [LLVM-512]
- Committed a trivial fix for one of the tests
- Still looking into the other failures
* Received and setup laptop for Morello work
- Awaiting further instructions
== Plan ==
* Start working on Morello
* Keep triaging check-lldb failures
* If time permits, look into SVE asserts some more
# Progress #
o Annual Review
* Concluded
o Upstream GDB
* Patch reviews on gerrit and answering questions.
* Fixed PR25124 - [ARM] regression: thumb-bx-pc.exp
(https://sourceware.org/bugzilla/show_bug.cgi?id=25124)
* Investigated an odd failure in gdb.base/step-over-syscall.exp and
ended up finding some odd stepping behavior that may or may not be
kernel related. Still investigating under GNU-644
(https://projects.linaro.org/browse/GNU-644)
o GDB:
* GNU-170 - GDB BZ #21221 - gdb hangs while stepping an empty loop
- On hold for now. It would be nice to be able to use a NOP instead
of a dummy label + jump.
* Setup QEMU for running SVE bits and reproduced some SVE hiccups in
gdbserver that Alex mentioned.
* Misc discussions about SVE and the GDB implementation in general.
# Plan #
o Upstream GDB
* More patch reviewing and answering questions.
o GDB:
* GNU-644 - [GDB, AArch64] gdb.base/step-over-syscalls.exp failures
- Continue investigating
* Tweak QEMU setup a little for SVE testing
== Progress ==
* GCC:
- -mpure-code on v6m: no feedback yet
* Linker:
- started looking at implementing non-contiguous memory support
* GCC upstream validation:
- reported several issues
* misc:
- infra fixes / troubleshooting / reviews
== Next ==
* GCC: pure-code/v6m, handle feedback
* Binutils: support non-contiguous memory regions in linker
[VIRT-263 # ARMv8.1-VHE Virtual Host Extensions ]
Reworked the timer redirection. Now the EL2 and EL0 redirection
is unified, which is a bit easier to understand. Still no joy
working out where the unwanted interrupt is coming from. As far
as I can tell everything is plumbed correctly...
I'll shelve this until PMM is not swamped with release work.
It must wait for 5.0 for merging anyway.
[VIRT-327 # Richard's upstream QEMU work ]
Assorted patch review.
[Kernel]
Posted two more rounds of ARMv8.5-RNG for review. Seems I'd
misunderstood one of Mark's previous suggestions, and Ard changed
his mind about how RNDR vs RNDRRS should be used in the context
of the shared resource across host*CORES + virt*VCPUS.
[GCC]
Posted an implementation of asm-flag-output for AArch32+AArch64.
I should have done this years ago. There are two potential users
within the kernel, and one is access_ok() which has thousands
of uses. (Oh, and RNG, which has like 3 uses. :-P)
Reviewed some arm simd patches that caught my eye.
r~
QEMU Tooling ([VIRT-252])
=========================
QEMU plugin support ([VIRT-280])
- feature now merged in 4.2
- closed out a bunch of related JIRA cards
- posted {PATCH} tcg plugins: expose an API version concept
Message-Id: <20191104131836.12566-1-alex.bennee(a)linaro.org>
- requested by Peter before hardfreeze
Extend gdbstub for SVE ([VIRT-281])
- got a [working prototype]
- probably need a little core gdbstub re-factor before posting RFC
[VIRT-281] https://projects.linaro.org/browse/VIRT-281
[working prototype]
https://github.com/stsquad/qemu/tree/gdbstub/sve-registers
Upstream Work ([VIRT-109])
==========================
- posted {PULL v3 00/15} testing updates Message-Id:
<20191025193709.28783-1-alex.bennee(a)linaro.org>
- had to drop NetBSD autobuild (again)
[VIRT-109] https://projects.linaro.org/browse/VIRT-109
[branch]
https://github.com/stsquad/qemu/tree/testing/docker-multiarch-refactor
[testing/next] https://github.com/stsquad/qemu/tree/testing/next
Other Activities
================
- Presented at KVM Forum
- went down well, made a number of contacts who are interested
- A bunch of discussion on Hexagon
- More detailed write-up to follow
Completed Reviews [4/4]
=======================
{PATCH 0/5} travis.yml improvements: Update libraries, build with arm64
Message-Id: <20191009170701.14756-1-thuth(a)redhat.com>
- CLOSING NOTE [2019-10-18 Fri 19:04]
Pulled some bits into testing/next
Added: <2019-10-09 Wed>
{PATCH} Semihost SYS_READC implementation (v4)
Message-Id: <20191024224622.12371-1-keithp(a)keithp.com>
{PATCH v2 0/4} target/arm: Support for Data Cache Clean up to PoP
Message-Id: <CADSWDztHetgmbUOp4WyRAkR0daAG6kkwhUTcyKWiCTWHQ1XB=w(a)mail.gmail.com>
{PATCH 0/4} Make the qemu_logfile handle thread safe.
Message-Id: <20191107142613.2379-1-robert.foley(a)linaro.org>
Absences
========
- KVM Forum Oct 29th-Nov 1st
Current Review Queue
====================
* {PATCH v7 0/8} Acceptance test: Add "boot_linux" acceptance test
Message-Id: <20191104151323.9883-1-crosa(a)redhat.com>
Added: <2019-11-04 Mon>
* {RFC 0/3} tests/vhost-user-fs-test: add vhost-user-fs test case
Message-Id: <20191025100152.6638-1-stefanha(a)redhat.com>
Added: <2019-10-25 Fri>
* {PATCH v5 00/22} target/arm: Implement ARMv8.5-MemTag, system mode
Message-Id: <20191011134744.2477-1-richard.henderson(a)linaro.org>
Added: <2019-10-11 Fri>
* {PATCH v4 0/9} target/arm/kvm: enable SVE in guests
Message-Id: <20190924113105.19076-1-drjones(a)redhat.com>
Added: <2019-09-24 Tue>
--
Alex Bennée
