Hello,
# TCWG Infrastructure
- Reviewed a bunch of Gerrit requests for our CI scripts.
- Learning Jenkins job builder syntax and working on a job definition to
run fast_check_{gcc,gdb} jobs on Gerrit review requests for
jenkins-scripts and ABE.
- Changed CI scripts to save ABE and component testsuite logs when the ABE
build or check step fails. This should help debug a case where a GDB CI
job failed due to (probably) a corruption of the gdb.sum testsuite
result file.
# Misc
- Some preparations for the trip to Linaro Connect.
--
Thiago
Progress:
* UM-2 [QEMU upstream maintainership]
- sent out v3 of the 'deprecate singlestep option' patchset
- sorted out the draft QEMU Summit invite list and invitation text
- spent some time trying to understand how the imx SoCs arrange
their ethernet controllers and PHYs so I can review a patchset
- sent patch fixing minor configure nit where it wasn't honouring
--cross-prefix for the ObjC compiler
- got the 8.0 release out of the door and handed over merge handling
to rth
- sent some patchsets updating a few old .txt files to reStructuredText
- still thinking about our page-table-walk code -- I'm not convinced
it's doing the right thing with NSW/SW bits, even after last
week's patchset...
-- PMM
Hello,
# TCWG Infrastructure
- Fixed problem in ABE with MinGW build of GDB's master branch.
- Fixed problem in upstream GDB with MinGW build of GDB's master branch.
- Analysed backlog of failed check_gdb jobs.
- A couple of "misbisected" commits, including one pointing to a glibc commit.
- One detected regression also noticed by Christophe, and fixed by the community.
- One Arm failure that passes on QEMU TCG.
- Reviewed a number of Gerrit requests about improving ABE and CI scripts.
--
Thiago
Progress:
* UM-2 [QEMU upstream maintainership]
* trying to get a release out of the door -- due among other things
to the Easter holiday weekend, rc4 is a bit late and has rather
more changes than I would prefer
* more triaging of Coverity issues
* sent a few trivial bug fix patches
* started reviewing and queueing arm patches for 8.1
* investigated a FEAT_SEL2 bug that showed up with some proposed
changes to TF-A/Hafnium. The architecture and QEMU's code
are pretty hairy in this area but I think I have identified
the correct fix...
-- PMM
Hello,
[GNU-796] Stabilize GDB testsuite results in the CI
- Submitted to GDB mailing list and committed patches fixing the
gdb.asm/asm-source.exp regression found by the check_gdb job. Turned out
to be a small bug in the stabs debug format support.
- Committed Gerrit review request disabling Python on MinGW cross builds.
[GNU-767] Support changing SVE vector length in remote debugging
- Investigating a follow-up question Simon asked during review of the
patch series fixing a corner case when reading auxv from multi-threaded
inferiors.
--
Thiago
Progress:
* UM-2 [QEMU upstream maintainership]
* rc3 this week
* reworked my "deprecate the misleading -singlestep option"
patchset to deal with review feedback, sent out v2
* KVM Forum programme committee work
* investigated a regression where the mps3-an547 board
asserts on startup; for 8.0 we will just revert the change
that introduced the failure, since it was only an optimization
* some triage of Coverity issue reports; sent some patches for
some easy ones, queried original code submitter for others
-- PMM
Hi Alexandros,
Linaro benchmarking CI flagged this patch. After it clang seems to miscompile 602.gcc_s from SPEC CPU2017 for "-O3 -flto" on aarch64-linux-gnu. Also, it appears that 600.perlbench_s slows down by 9%.
Could you investigate, please? Let me know if you need any assistance in reproducing the problem.
Our Benchmarking CI is still in active development, and there are false positives, but this report seems to be legit [1].
Kind regards,
[1] https://ci.linaro.org/job/tcwg_bmk-code_speed-cpu2017speed--llvm-aarch64-ma…
--
Maxim Kuvyrkov
https://www.linaro.org
Hello,
[GNU-796] Stabilize GDB testsuite results in the CI
- Committed ABE change suggested by Maxim to mention failures that cause
additional testsuite runs.
- Tried to update Python MinGW build to 3.x, but it's a rabbit hole.
Proposing to disable Python support when cross-building GDB with MinGW
instead.
- First regression detected by the tcwg_gnu_native_check_gdb CI job
reported upstream¹. Started investigating it.
[GNU-767] Support changing SVE vector length in remote debugging
- Created a testcase to exercise the corner case mentioned by Pedro.
Found out that GDB is also susceptible to it. Fixed both GDB and
gdbserver. Posted patch series upstream².
--
Thiago
¹ https://inbox.sourceware.org/gdb-patches/871ql6dhf4.fsf@linaro.org/
² https://inbox.sourceware.org/gdb-patches/20230331034432.3037148-1-thiago.ba…
