Hello,
# [GNU-767] Support changing SVE vector length in remote debugging
- Worked on v2 of the gdbserver patches improving SVE support. Found a
couple of simplifications that could be made to the code. Rebased on
current master branch and finished regression testing and patch
preparation. Wrote the cover letter.
- Finally posted the patch series upstream¹.
--
Thiago
¹ https://inbox.sourceware.org/gdb-patches/20221126020452.1686509-1-thiago.ba…
Progress:
* UM-2 [QEMU upstream maintainership]
- More conversions of devices to 3-phase reset in pursuit of the
interim goal of getting rid of device_class_set_parent_reset()
- Investigated a regression in a TF-A workload: this was due to
recent pagetable walk refactoring breaking debug accesses.
- code review, etc; mostly this has been of for-8.0 material, as
(other than the above mentioned ptw regression) there haven't
been many release-worthy issues this freeze cycle.
-- PMM
Hi David,
Our CI flagged your commit; it seems it miscompiles 403.gcc from SPEC CPU2006 at -O3 -flto for aarch64-linux-gnu. Would you please investigate?
Let me know if you need any assistance in reproducing this.
Thanks!
===
After working-3971-g5f7f484ee54e commit 5f7f484ee54ebbf702ee4c5fe9852502dc237121
Author: David Green <david.green(a)arm.com>
[AArch64] Add GPR rr instructions to isAssociativeAndCommutative
the following benchmarks slowed down by more than 3%:
- 403.gcc failed to run
Configuration:
- Benchmark: SPEC CPU2006
- Toolchain: Clang + Glibc + LLVM Linker
- Version: all components were built from their tip of trunk
- Target: aarch64-linux-gnu
- Compiler flags: -O3 -flto
- Hardware: NVidia TX1 4x Cortex-A57
--
Maxim Kuvyrkov
https://www.linaro.org
Hello,
# [GNU-767] Support changing SVE vector length in remote debugging
- Working on v2 of the gdbserver patches improving SVE support. Found
and fixed a memory leak in my code while preparing patches for
upstream submission. Continuing preparing the patches.
# [GNU-796] Stabilise GDB testsuite results in the CI
- Analysed failures of “fast_check_gdb” CI jobs over the weekend. They
were caused by unrelated build issues in GCC and libstdc++.
--
Thiago
Project Stratos
===============
- finished [blog post for virtio-camera]
- now live [on web site]
- did a review of [virtio-loopback]
- started reviewing [PATCH v9 0/8] KVM: mm: fd-based approach for
supporting KVM Message-Id:
<20221025151344.3784230-1-chao.p.peng(a)linux.intel.com>
- trying to assess if user-space facing solution for memory sharing
[blog post for virtio-camera]
<https://linaro.atlassian.net/jira/core/projects/LBO/board?selectedIssue=LBO…>
[on web site]
<https://www.linaro.org/blog/the-challenges-of-abstracting-virtio/>
[virtio-loopback] <https://git.virtualopensystems.com/virtio-loopback>
vhost-device maintainer effort ([UM-196])
- debugged regression in virtio-vsock and QEMU
- should have some error message patches to post
[UM-196] <https://linaro.atlassian.net/browse/UM-196>
Single Binary ([QEMU-487])
==========================
- posted [PATCH for 8.0 v5 00/20] use MemTxAttrs to avoid current_cpu
in hw/ Message-Id: <20221111182535.64844-1-alex.bennee(a)linaro.org>
[QEMU-487] <https://linaro.atlassian.net/browse/QEMU-487>
QEMU Upstream Work ([UM-2])
===========================
- posted [PATCH for 7.2-rc1 v2 00/12] testing, docs, plugins, arm
pre-PR Message-Id: <20221111145529.4020801-1-alex.bennee(a)linaro.org>
- posted [PULL for 7.2 00/10] testing and doc updates Message-Id:
<20221115133439.2348929-1-alex.bennee(a)linaro.org>
- did a bunch of follow-up testing to shake out other console bugs
- posted [PATCH for 7.2-rc1 v2 00/12] testing, docs, plugins, arm
pre-PR Message-Id:
<20221111145529.4020801-1-alex.bennee(a)linaro.org>
- posted [PATCH for 7.2? v1 0/2] Arm GICv2 patches Message-Id:
<20221115134048.2352715-1-alex.bennee(a)linaro.org>
[UM-2] <https://linaro.atlassian.net/browse/UM-2>
Other
=====
- hackbox2 upgrade follow-up
- health check content
Completed Reviews [1/1]
=======================
[PATCH] ci: replace x86_64 macos-11 with aarch64 macos-12
Message-Id: <20221116175023.80627-1-berrange(a)redhat.com>
Absences
========
Current Review Queue
====================
TODO [PATCH v6 00/21] Drivers for gunyah hypervisor
Message-Id: <20221026185846.3983888-1-quic_eberman(a)quicinc.com>
==================================================================================================================
TODO [PATCH v2 0/1] tcg: add perfmap and jitdump
Message-Id: <20221114161321.3364875-1-iii(a)linux.ibm.com>
========================================================================================================
TODO [PATCH for-8.0 v3 00/45] tcg: Support for Int128 with helpers
Message-Id: <20221111074101.2069454-1-richard.henderson(a)linaro.org>
=====================================================================================================================================
--
Alex Bennée
Progress:
* UM-2 [QEMU upstream maintainership]
-- the usual release cycle work. Looks relatively quiet this
time around.
-- taking the opportunity to try to catch up on some of the for-8.0
code review
* QEMU-471 [QEMU ARM v9.0 Baseline CPU for TCG]
-- started thinking about how to implement FEAT_FGT. Looking at
the code where this ought to go, I found a minor bug with how
we implement the existing HSTR_EL2 traps, and a case where we
trap AArch32 ATS12NSO* with the wrong syndrome.
-- PMM
Hello,
# [GNU-767] Support changing SVE vector length in remote debugging
- Working on v2 of the gdbserver patches improving SVE support. Tested new
code for regressions in different systems and configurations and found
none. Preparing new version of the patches for upstream submission. Will
likely post them early next week.
--
Thiago
Project Stratos
===============
- finished [blog post for virtio-camera]
- did a review of [virtio-loopback]
[blog post for virtio-camera]
<https://linaro.atlassian.net/jira/core/projects/LBO/board?selectedIssue=LBO…>
[virtio-loopback] <https://git.virtualopensystems.com/virtio-loopback>
vhost-device maintainer effort ([UM-196])
- review work
Single Binary ([QEMU-487])
==========================
- cleaning up current_cpu in [with mxtxattrs]
- stumbled into regressions in the way of testing
- posted [PATCH for 8.0 v5 00/20] use MemTxAttrs to avoid current_cpu
in hw/ Message-Id: <20221111182535.64844-1-alex.bennee(a)linaro.org>
[QEMU-487] <https://linaro.atlassian.net/browse/QEMU-487>
[with mxtxattrs]
<https://github.com/stsquad/qemu/tree/memtxattrs/cpuid-v5>
QEMU Upstream Work ([UM-2])
===========================
- posted [PATCH for 7.2-rc1 v2 00/12] testing, docs, plugins, arm
pre-PR Message-Id: <20221111145529.4020801-1-alex.bennee(a)linaro.org>
[UM-2] <https://linaro.atlassian.net/browse/UM-2>
Other
=====
- hackbox2 upgrade follow-up
- health check content
Completed Reviews [7/7]
=======================
[PATCH 00/24] accel/tcg: Rewrite user-only vma tracking
Message-Id: <20221006031113.1139454-1-richard.henderson(a)linaro.org>
[PATCH v1 00/12] Introduce xenpv machine for arm architecture
Message-Id: <20221015050750.4185-1-vikram.garhwal(a)amd.com>
[PATCH] Run docker probe only if docker or podman are available
Message-Id: <20221030083510.310584-1-sw(a)weilnetz.de>
[PULL 3/3] linux-test (tests/tcg/multiarch/linux-test.c) add check
Message-Id: <1626902375-7002-4-git-send-email-tsimpson(a)quicinc.com>
[PATCH v5 00/18] tests/qtest: Enable running qtest on Windows
Message-Id: <20221006151927.2079583-3-bmeng.cn(a)gmail.com>
[PATCH v1 00/12] Introduce xenpv machine for arm architecture
Message-Id: <20221015050750.4185-1-vikram.garhwal(a)amd.com>
[PATCH RFC 0/1] tcg: add perfmap and jitdump
Message-Id: <20221012051846.1432050-1-iii(a)linux.ibm.com>
Absences
========
Current Review Queue
====================
TODO [PATCH for-8.0 v3 00/45] tcg: Support for Int128 with helpers
Message-Id: <20221111074101.2069454-1-richard.henderson(a)linaro.org>
=====================================================================================================================================
TODO [PATCH v3 0/7] memory: prevent dma-reentracy issues
Message-Id: <20221028191648.964076-1-alxndr(a)bu.edu>
===========================================================================================================
TODO [QEMU][PATCH v2 0/5] Introduce Xilinx Versal CANFD
Message-Id: <20221022054746.28217-1-vikram.garhwal(a)amd.com>
==================================================================================================================
--
Alex Bennée
Progress:
* UM-2 [QEMU upstream maintainership]
-- identified another piece of the reset mechanics that can be
tractably cleaned up: I think we should be able to get
everything (effectively) moved over to the 3-phase reset system
-- sent out various for-8.0 patchsets that convert devices that
were using device_class_set_parent_reset(), since getting rid
of that function is step 1 of that cleanup
-- code review etc
-- PMM
Hello,
# [GNU-767] Support changing SVE vector length in remote debugging
- Confirmed that gdbserver doesn't send a new XML target description
over the wire when the vector length changes, so there's no impact of
these patches on the amount of remote protocol traffic, which was a
concern for GDB maintainers.
- Started doing some up code cleanup and regression tests to prepare for
submitting v2 of the patches.
# [GNU-796] Stabilise GDB testsuite results in the CI
- Committed Gerrit change request adding the new CI job¹ to run fast
subset of GDB tests, which also has stable results. The list of tests
comes from Sourceware's builder project.
--
Thiago
¹ https://ci.linaro.org/view/tcwg_gnu_native/job/tcwg_gnu_native_fast_check_g…
