Project Stratos
===============
- continued working on [adding vhost-user-rng to crosvm]
- this is to demo Stratos on Gunyah
- re-built guest kernel with known working backend
- it works :-)
- initial review of Viresh's slides for KVM Forum talk
[adding vhost-user-rng to crosvm]
<https://github.com/stsquad/crosvm/tree/add-vhost-user-rng>
vhost-device maintainer effort ([UM-196])
- prepared a clean-up [branch for new queue interface]
- spent time testing and realised it had broken things
[branch for new queue interface]
<https://github.com/stsquad/vhost-device/tree/update-queue-interface>
QEMU Upstream Work ([UM-2])
===========================
- posted [PULL for 7.1 0/3] memory leak and testing tweaks Message-Id:
<CAFEAcA8oPjTq9quHxOCSczckwmmBSP0fY6dtCzwrNs59pMrNCw(a)mail.gmail.com>
- sadly one patch had to be reverted as it exposed another race
[UM-2] <https://linaro.atlassian.net/browse/UM-2>
Completed Reviews [1/1]
=======================
[PATCH 00/62] target/arm: Implement FEAT_HAFDBS
Message-Id: <20220703082419.770989-1-richard.henderson(a)linaro.org>
Absences
========
- will take a long w/e for August BH
Current Review Queue
====================
TODO [PATCH v2 00/33] accel/tcg + target/arm: pc-relative translation
Message-Id: <20220816203400.161187-1-richard.henderson(a)linaro.org>
=======================================================================================================================================
TODO [PATCH for-7.2 00/21] accel/tcg: minimize tlb lookups during translate + user-only PROT_EXEC fixes
Message-Id: <20220812180806.2128593-22-richard.henderson(a)linaro.org>
===========================================================================================================================================================================
--
Alex Bennée
Progress:
* UM-2 [QEMU upstream maintainership]
- respin and resend for a few patchsets after code review
* QEMU-422 [QEMU Arm Neoverse V1 vCPU for TCG]
- identified what the old ARMv8.5-CMODX feature is now
("prefetch speculation protection") and confirmed that
QEMU is already compliant with the instruction fetch ordering
requirements so there's no coding work required here
- Checked that we implement FEAT_ETS already and sent patches
to advertise it in the ID registers
- Checked that we already conform to the ordering rules required
by "prefetch speculation protection"
- Discovered that we accidentally fail to RAZ for a big chunk
of the reserved-for-new-AArch32-ID-registers space for v8 CPUs;
sent patches fixing that
thanks
-- PMM
Hello Linaro Toolchain Working Group,
clang-arm64-windows-msvc is red for 12 days. The host is missing a correct
version of msvc.
Is somebody looking at this?
Thanks
Galina
Progress:
* UM-2 [QEMU upstream maintainership]
- usual release cycle work: rounded up a couple of last-minute
fixes for "whoops, this crashes" bugs and some safe changes like
docs typo fixes.
* QEMU-422 [QEMU Arm Neoverse V1 vCPU for TCG]
- Finished implementing the FEAT_PMUv3p5 work. In the process of
testing it I found a handful of bugs in our existing PMU
emulation code. Sent out the patchset which fixes those bugs and
adds FEAT_PMUv3p5.
- Cleaned up the epic to remove subtasks we aren't going to
implement (FEAT_SPE, FEAT_TRF), and added one for "actually
define the new CPU model"
- FEAT_LSE2 is the only remaining real work here, and it is
probably going to be seriously tricky...(i.e. I hope to leave
it to RTH ;-))
-- PMM
Project Stratos
===============
- continued working on [adding vhost-user-rng to crosvm]
- this is to demo Stratos on Gunyah
- backend comes up and device is detected but queues are not
consumed
- had some initial discussions with Viresh about talk structure for
KVM Forum
[adding vhost-user-rng to crosvm]
<https://github.com/stsquad/crosvm/tree/add-vhost-user-rng>
vhost-device maintainer effort ([UM-196])
- prepared a clean-up [branch for new queue interface]
[UM-196] <https://linaro.atlassian.net/browse/UM-196>
[branch for new queue interface]
<https://github.com/stsquad/vhost-device/tree/update-queue-interface>
QEMU Upstream Work ([UM-2])
===========================
- posted [PATCH for 7.1 v1 0/8] memory leaks and speed tweaks
Message-Id: <20220811151413.3350684-8-alex.bennee(a)linaro.org>
- will drop most of the speed tweaks until 7.2 opens
[UM-2] <https://linaro.atlassian.net/browse/UM-2>
Completed Reviews [1/1]
=======================
[PATCH 00/62] target/arm: Implement FEAT_HAFDBS
Message-Id: <20220703082419.770989-1-richard.henderson(a)linaro.org>
Absences
========
- 2 day week next week
- will take a long w/e for August BH
--
Alex Bennée
Hello,
I noticed that I didn't send a report for week #30. Sorry about that. For
that reason, this report covers two weeks.
# [GNU-767] Support changing SVE vector length in remote debugging
- Prepared and submitted upstream a fix and a testcase for a small SVE bug
when debugging in native mode an inferior which changes the SVE length.
Luis reviewed it and I submitted v2 addressing his comments.
# Misc
- Was out for 2 days.
--
Thiago
Progress:
* UM-2 [QEMU upstream maintainership]
- more investigation, triage and fixing of minor bugs in run-up to release
* QEMU-422 [QEMU Arm Neoverse V1 vCPU for TCG]
- starting working on the PMUv8p5 enhancements. These consist of a couple
of new cycle-counter-disable bits (easy) and extension of the event
counters to 64 bits (more tricky). So far I have code for the easy part
and have made a start on the hard part...
-- PMM
Progress:
* UM-2 [QEMU upstream maintainership]
- debugged and sent patch to fix a bug in timer_create
syscall support in linux-user on certain host libcs
- tried and failed to repro a bug where semihosting SYS_HEAPINFO
was returning addresses in the flash rom
- more Coverity issue triage -- now have finished triage of
everything that isn't either in the test suite or an
"insecure data handling" issue. Sent patches for a few
issues, prodded other people about some more...
-- PMM
Hello,
# [GNU-767] Support changing SVE vector length in remote debugging
* Fixed last bug which prevented the sve-ioctls QEMU testcase to be
correctly stepped through in gdbserver. The next step is checking
whether any regression was introduced by my changes, and clean up the
code.
* In the process, spotted small bug in GDB when stepping through the
sve-ioctls QEMU testcase using the existing native support. Started
preparing a patch to submit upstream.
# [LLVM-769] Linaro CI
* Increased tcwg-fx-02 ccache max size to 40 GB.
* Learned a bit about Zorg and started adding “depends_on_projects”
field to builders running on Linaro workers.
--
Thiago
