SVE Support ([VIRT-198])
========================
- looked at re-factoring fcvt tests to add tests for rth's recent
fixes
- see [my initial test branch]
- the idea is to make adding a new op test case minimal effort
[VIRT-198] https://projects.linaro.org/browse/VIRT-198
[my initial test branch]
https://github.com/stsquad/qemu/tree/testing/generic-op-tester
Other Tasks
===========
- Started working on "My Other Machine is Virtual" talk for YVR18
- use-case: find hot-block in pure CPU code
- use-case: trace disk activity on system boot
- Added another story to the [Instrumentation EPIC]
[Instrumentation EPIC] https://projects.linaro.org/browse/TCWG-1457
Absences
========
- Holiday (16th-28th August 2018)
- YVR18 Connect (17th-21st September 2018)
- KVM Forum 2018 (24th-26th October 2018)
Current Review Queue
====================
* {Qemu-devel} {PATCH 0/3} synchronization profiler
Message-Id: <20180813171132.21939-3-cota(a)braap.org>
* {PATCH 0/6} target/arm: More sve-ish fixes
Message-Id: <20180810193129.1556-1-richard.henderson(a)linaro.org>
* {Qemu-arm} {PATCH 00/10} target/arm: Some pieces of support for 32-bit Hyp mode
Message-Id: <20180814124254.5229-1-peter.maydell(a)linaro.org>
* {PATCH 00/20} target/arm: sve system mode patches
Message-Id: <20180809042206.15726-1-richard.henderson(a)linaro.org>
* {PATCH v4 00/14} fp-test + hardfloat
Message-Id: <1528768140-17894-1-git-send-email-cota(a)braap.org>
* {PATCH 0/5} tests/vm: Improvements when KVM is not available
Message-Id: <20180717024827.27897-1-f4bug(a)amsat.org>
--
Alex Bennée
o GNU
* Submitted Linaro version string and macros patch for ARM GCC 8 vendor branch
o LLVM
* Built LLVM 7.0.0 RC1 ARM and AArch64 binaries
* Investigate infra issues with release builds
* libcxxabi exception address alignment test failure:
- Added some comments to help the review
* Machine Outliner on ARM prototype:
- Implemented saving LR in a register support
o Misc
* Various meetings and discussions.
[VIRT-198 # QEMU: SVE Emulation Support ]
Fixed a dozen-ish bugs pointed out by Laurent in direct email.
Reorganized the patch set, squashing !fixup; posted everything.
r~
[TCWG-1424] Investigation into profile guided information for code size
- Wrote script to process all the data from all the runs and correlate
it with code size.
- Now have some visualisations of some of the data that I can use to
make sense of the output.
- Next step is to prepare a presentation for the Connect hacking room
on the output.
- Jira sweep for TCWG LLVM epics in preparation for upcoming connect.
- Presentation for Linaro connect on Clang Tooling accepted, a
bittersweet moment as I've got to write it now.
SVE Support ([VIRT-198])
========================
- continued looking into Nils's SVE enabled Test_simd from Grid
failure
- __attribute__((noinline)) makes it go away, so subtle code
difference
- looking through side-by-side traces to find where it went wrong
- posted {RFC PATCH 0/4} add hand-rolled fallback when capstone
fails Message-Id: <20180808123934.17450-1-alex.bennee(a)linaro.org>
- finally fixed after Laurent's review comments - see [rth's latest
branch]
[VIRT-198] https://projects.linaro.org/browse/VIRT-198
[rth's latest branch]
https://github.com/stsquad/qemu/tree/testing/tgt-arm-sve-c
SVE Reviews
- reviewed {PATCH 00/11} target/arm: sve linux-user patches
Message-Id: <20180809034033.10579-1-richard.henderson(a)linaro.org>
- started reviewing {PATCH 00/20} target/arm: sve system mode patches
Message-Id: <20180809042206.15726-1-richard.henderson(a)linaro.org>
Upstream Work ([VIRT-109])
==========================
- posted {RFC PATCH 0/3} Tweaks to linux-user -dfilter Message-Id:
<20180809175553.18479-1-alex.bennee(a)linaro.org>
- posted {RFC PATCH 0/3} tweaks for QEMU's C standard Message-Id:
<0180810171102.16451-1-alex.bennee(a)linaro.org>
[VIRT-109] https://projects.linaro.org/browse/VIRT-109
Other Tasks
===========
- Submitted "My Other Machine is Virtual" abstract for YVR18
- this talk has been accepted
- Drafted the [Instrumentation EPIC]
- started added stories for various use-cases
[Instrumentation EPIC] https://projects.linaro.org/browse/TCWG-1457
Completed Reviews [1/1]
=======================
{PATCH 00/11} target/arm: sve linux-user patches
Message-Id: <20180809034033.10579-1-richard.henderson(a)linaro.org>
- CLOSING NOTE [2018-08-09 Thu 12:44]
Looks good, tested on a bunch of stuff
Absences
========
- Holiday (16th-28th August 2018)
- YVR18 Connect (17th-21st September 2018)
- KVM Forum 2018 (24th-26th October 2018)
Current Review Queue
====================
* {PATCH 00/20} target/arm: sve system mode patches
Message-Id: <20180809042206.15726-1-richard.henderson(a)linaro.org>
* {PATCH 0/5} tests/vm: Improvements when KVM is not available
Message-Id: <20180717024827.27897-1-f4bug(a)amsat.org>
* {RFC PATCH 00/12} tests/tcg: Add TriCore tests
Message-Id: <20180501142222.19154-1-kbastian(a)mail.uni-paderborn.de>
* {PATCH v4 00/14} fp-test + hardfloat
Message-Id: <1528768140-17894-1-git-send-email-cota(a)braap.org>
* {Qemu-devel} {RFC PATCH v2 0/7} QEMU binary instrumentation prototype
Message-Id: <152819515565.30857.16834004920507717324.stgit@pasha-ThinkPad-T60>
* {Qemu-devel} {RFC v2 0/2} Add BPF suuport to Qemu
Message-Id: <20180625110706.23332-1-sameeh(a)daynix.com>
--
Alex Bennée
Progress:
* VIRT-65 [QEMU upstream maintainership]
+ found and fixed a last minute couple of bugs with VM migration
for Arm guests, one in the GICv3 and one for M-profile CPUs
+ triaging and applying fixes for last few rc4 bugs
+ sent a patch to make our checkpatch script catch multiline comment
style issues
+ LP:1777672: investigating reported bug in raspi framebuffer emulation
* VIRT-164 [improve Cortex-M emulation]
+ finished, tested, and sent patchset that implements the Master Security
Controller and adds the PL081 DMA and MSCs to the MPS2 AN505 board
+ wrote patches that add the PL022 SPI controllers to the AN505
(fixing some PL022 bugs in the process)
* finished sorting out last bits of travel for Connect and KVM Forum
* various JIRA ticket scrub/fettling
thanks
-- PMM
=== Work done during this week ===
* TCWG-1379 / GCC PR85434 / CVE-2018-12886: rework needed
+ fix issues seen on x86_64 and start a bigger round of testing
* TCWG-1337 / LLVM PR34170: last patch committed to trunk
+ address review comments and commit it once approved, then request
backport to LLVM 7 branch
* Submit and commit patch to clarify what tm.texi needs copying when
tm.texi.in is updated in source tree
* Misc:
+ Linaro syncs
+ 2 days and a half of Linaro JIRA gardening
=== Plan for week 33 ===
* Enable regression testing of Linaro release process
* DSGHACK-25 (Support arithmetic on FileCheck regex variable): address comments
+ continue to rework patch
* GCC PR85434 / CVE-2018-12886: rework needed
+ confirm all regressions are fixed
+ finish testing and submit for review
* Try to reproduce perf issue mentioned in week #30s weekly report on
latest perf
=== Work done during this week ===
* TCWG-1379 / GCC PR85434 / CVE-2018-12886: rework needed
+ commit and revert due to regression on x86 and in glibc for aarch64
-> seems there is at least 2 issues, *sigh*
* TCWG-1337 / LLVM PR34170:
+ track down and fix issue that patch 2/3 uncovered, then reapply 2/3
+ investigate regression from patch 1/3, fixed by patch 3/3
fortunately and believe this is the right fix
* Continue work on TCWG-1428 (Support arithmetic on FileCheck regex variable):
+ start rework patch to follow new syntax and accept numeric
expressions with several variables
* Linaro PR3943:
+ investigate issue, propose several workarounds to customer and
raise need for GCC release with combined multilib
* Misc:
+ Linaro syncs
+ bits of Linaro JIRA gardening
+ new ask question button and typo fix on developer.arm.com's GNU RM page
+ prepare Linaro Connect
=== Plan for week 32 ===
* Summarize state of GNU EPIC in JIRA
* Enable regression testing of Linaro release process
* DSGHACK-25 (Support arithmetic on FileCheck regex variable): address comments
+ continue to rework patch
* GCC PR85434 / CVE-2018-12886: rework needed
+ investigate regressions
* Try to reproduce perf issue mentioned in last weekly report on latest perf
*very short week (1 day) *
== Progress ==
* FDPIC
- uClibc-ng: posted v2 patches
* GCC upstream validation:
- looking at some random noise in testing
- reported a couple of regressions
* Infrastructure:
- misc cleanups
* misc (conf-calls, meetings, emails, ....)
== Next ==
Holidays: back on Aug 29th
o LLVM
* Machine Outliner on ARM prototype:
- Working on saving LR in a register support
- Working on stack fixups mechanism
* libcxxabi exception address alignment test failure:
- Fix submitted upstream
o Misc
* Various meetings and discussions.
