[VIRT-327 # Richard's upstream QEMU work ]
Patch review -- lots of riscv vector stuff.
Fix for PAUTH error indication.
Diagnosed an MTE KASAN problem
-- my theory is a guest os thread error.
Investigation into PAUTH slowdown.
r~
Realised I missed last week so bumper update.
VirtIO Initiative ([STR-9])
===========================
- Inter-VM device emulation (call on Mon 20th July 2020) Message-Id:
<20200715112342.GD18817(a)stefanha-x1.localdomain>
- posted [RFC PATCH v1 0/3] put arm64 kvm_config on a diet Message-Id:
<20200804124417.27102-1-alex.bennee(a)linaro.org>
- EGL Call
- saw an interesting breakdown from other team doing vhost-user
- OpenSynergy
- got a good idea of where they are heading and the various players
[STR-9] <https://projects.linaro.org/browse/STR-9>
VirtIO RPMB ([STR-5])
=====================
- got the return path working
- re-based my [testing kernel] and made more spec conforming tweaks
[STR-5] <https://projects.linaro.org/browse/STR-5>
[simplified testing branch]
<http://git.linaro.org/people/alex.bennee/linux.git/shortlog/refs/heads/revi…>
[kernel]
<http://git.linaro.org/people/alex.bennee/linux.git/shortlog/refs/heads/revi…>
[testing kernel]
<http://git.linaro.org/people/alex.bennee/linux.git/shortlog/refs/heads/test…>
VirtIO Portability Demo ([STR-13])
==================================
- spent some time getting the MachiatoBin up and running
[STR-13] <https://projects.linaro.org/browse/STR-13>
Upstream Work ([QEMU-109])
==========================
- posted [PATCH v4 00/40] testing/next (vm, gitlab, fixes) Message-Id:
<20200701135652.1366-1-alex.bennee(a)linaro.org> : done
- Debugging a failure on m68k with pgd_find_hole_fallback
- seems 4.17+ with no /proc leave mmap_min_addr = 0 and NOREPLACE
hits it
- rth pondering a fix, may get back to it on Monday
- More debugging of icount bug, looks like -icount sleep=off interacts
with [bug 1859021]
- posted [PULL 00/16] various fixes for rc2 (semihosting, tcg, docker,
tests/vm) Message-Id:
<20200727122357.31263-1-alex.bennee(a)linaro.org>
[QEMU-109] <https://projects.linaro.org/browse/QEMU-109>
[bug 1859021] <https://bugs.launchpad.net/qemu/+bug/1859021>
Completed Reviews [6/6]
=======================
[PATCH v2 0/2] linux-user: fix clock_nanosleep()
Message-Id: <20200722174612.2917566-1-laurent(a)vivier.eu>
- CLOSING NOTE [2020-07-24 Fri 21:47]
Queued to my tree
Added: <2020-07-22 Wed>
[PATCH v1 0/3] python/qemu: follow-up changes for ConsoleSocket
Message-Id: <20200717203041.9867-1-robert.foley(a)linaro.org>
- CLOSING NOTE [2020-07-24 Fri 21:47]
Queued to my tree
Added: <2020-07-18 Sat>
[virtio-dev] [PATCH v5 00/10] introduce virtio vhost-user backend device type
Message-Id: <20200518203721.7625-1-ndragazis(a)arrikto.com>
- CLOSING NOTE [2020-07-24 Fri 21:48]
Interesting stuff, sent a few terminology fixes
Added: <2020-07-15 Wed>
[PATCH v2] cputlb: Make store_helper less fragile to compiler optimizations
Message-Id: <20200724195128.2373212-1-scw(a)google.com>
[PATCH 0/4] Refactor get_fpstatus_ptr() ready for AArch32 fp16
Message-Id: <20200806104453.30393-1-peter.maydell(a)linaro.org>
[DRAFT PATCH 000/143] Meson integration for 5.2
Message-Id: <1596741379-12902-1-git-send-email-pbonzini(a)redhat.com>
Absences
========
- 2 days off sick
- "holiday" 13th-25th Aug
Current Review Queue
====================
* [PATCH 00/11] Run cross-compilation build tests in the gitlab-CI
Message-Id: <20200804170055.2851-1-thuth(a)redhat.com>
Added: <2020-08-04 Tue>
* [RFC v3 0/8] QEMU cpus.c refactoring part2
Message-Id: <20200803090533.7410-1-cfontana(a)suse.de>
Added: <2020-08-03 Mon>
* [PATCH 0/2] accel/tcg: remove implied BQL from cpu_handle_interrupt/exception path
Message-Id: <20200731125127.30866-1-robert.foley(a)linaro.org>
Added: <2020-07-31 Fri>
* [PATCH 0/3] float16 APIs and alternative sNaN handling
Message-Id: <1596102747-20226-1-git-send-email-chihmin.chao(a)sifive.com>
Added: <2020-07-30 Thu>
--
Alex Bennée
Progress:
* VIRT-65 [QEMU upstream maintainership]
+ rc3 sent out. Optimistically hoping for release next week.
+ rebased the patchset converting QAPI doc-comments to rST
+ Fixed a bug in syndrome register values for copro insns trapped
from AArch32 to AArch64
* VIRT-364 [QEMU support for ARMv8.1-M extensions]
+ Finished and sent out the patchset that cleans up the coproc
insn decode and corrects the NOCP handling
+ With assistance from RTH, figured out how to use gvec helpers
to implement fp16 for various Neon insns. Added fp16 support to
20 or so insns; still have 15 or so to go.
thanks
-- PMM
Progress:
* VIRT-65 [QEMU upstream maintainership]
+ More release herding...
+ Sent fixes for some bugs:
- assertion in the imx_epit timer device when guest soft-reset it
- netduino2/netduinoplus2 forgot to configure system clock scale so
using SysTick in "run at CPU frequency" mode would hang
- most M-profile boards failed to make AIRCR.SYSRESETREQ actually
reset the system
* VIRT-364 [QEMU support for ARMv8.1-M extensions]
+ More progress with fp16: all the VFP insns now handled, including
the new-for-fp16 ones. Still to do: all of Neon...
+ Spent some time working through the details of NOCP vs UNDEF
in the M-profile coprocessor space for the various revisions
of the architecture. v8.1M adjusts things a bit in this area
and I want to clean up this bit of QEMU's current code and
get the v8.1M bits right.
Fact: next Monday (3rd August) will be the 10th anniversary
of my secondment into Linaro!
-- PMM
[VIRT-327 # Richard's upstream QEMU work ]
Misc patch review.
- Largest bit is half of riscv 0.9 vector patch set.
Fix arm E2 bug in ptw_translate.
Fix arm E3 buts in direct kernel startup.
Fix linux-user chroot failure.
r~
[VIRT-327 # Richard's upstream QEMU work ]
Misc patch review.
[GCC]
I looked into Adhemerval's libgomp-scalability patch set. The code looks good,
and I can't see anything wrong.
The cancel-parallel-2 test that's reported to regress, does, sometimes. It
never fails for me on qemu-test (aarch64, tx1). It *only* fails under the
dejagnu test harness on x86_64 and ppc64le. When run by hand it succeeds,
always. I cannot explain that at all. I've run the testsuite with
OMP_DEBUG_ENV=verbose and see that the dejagnu environment is as expected.
Anyway, I can't make forward progress because I can't reproduce the problem
under controlled conditions.
r~
VirtIO Related Work ([STR-9])
=============================
- putting together a demo system with a MacchiatoBin - idea here
Message-Id: <871rlkmzbs.fsf(a)linaro.org>
- posted On doorbells (queue notifications) Message-Id:
<87r1tdydpz.fsf(a)linaro.org> for discussion on RTT
- posted Enhancing virtio-mmio for MSI (new card required?)
Message-Id:
<alpine.DEB.2.21.2007151407190.4124@sstabellini-ThinkPad-T480s>
- started reviewing [virtio-dev] [PATCH v5 00/10] introduce virtio
vhost-user backend device type Message-Id:
<20200518203721.7625-3-ndragazis(a)arrikto.com>
- VIRTIO Sync-up call
- mainly discussing reducing traps MMIO vs PCIe
- need some better figures to justify adding MSI to MMIO
[STR-9] <https://projects.linaro.org/browse/STR-9>
VirtIO RPMB ([STR-5])
- realised the virtio driver in the [kernel] sent extra frames I
wasn't expecting
[STR-5] <https://projects.linaro.org/browse/STR-5>
[kernel]
<http://git.linaro.org/people/alex.bennee/linux.git/shortlog/refs/heads/revi…>
Upstream Work ([QEMU-109])
==========================
- posted [PATCH v4 00/40] testing/next (vm, gitlab, fixes) Message-Id:
<20200701135652.1366-1-alex.bennee(a)linaro.org> : done
- posted [PATCH v2 00/11] misc fixes for rc0 (docker, plugins,
softfloat) Message-Id:
<20200713200415.26214-1-alex.bennee(a)linaro.org>
- posted [PULL 0/9] final misc fixes for 5.1-rc0 Message-Id:
<20200714095247.19573-1-alex.bennee(a)linaro.org>
- took a couple of Message-Id:
<20200715105542.14428-1-alex.bennee(a)linaro.org> attempt to finally
get merged Message-Id:
<20200715111455.19237-1-alex.bennee(a)linaro.org>
- posted [PATCH v1 0/5] candidate fixes for 5.1-rc1 (shippable,
semihosting, OOM tcg) Message-Id:
<20200717105139.25293-1-alex.bennee(a)linaro.org>
[QEMU-109] <https://projects.linaro.org/browse/QEMU-109>
Blog Post ([LBO-34])
====================
- finished writing the [evolution of the translator] blogpost, should
go up next week
[LBO-34] <https://projects.linaro.org/browse/LBO-34>
[evolution of the translator]
<https://docs.google.com/document/d/190BlYjSTt-nZSR8dNdOxptt-swOZiGnASndEuXo…>
Completed Reviews [4/4]
=======================
[PATCH for-5.1 0/4] Document virt and a few other Arm boards
Message-Id: <20200713175746.5936-1-peter.maydell(a)linaro.org>
[PATCH 0/2] python/qemu: follow-up changes for ConsoleSocket
Message-Id: <20200715204814.2630-1-robert.foley(a)linaro.org>
[PATCH 00/13] Reverse debugging
Message-Id: <159316678008.10508.6615172353109944370.stgit@pasha-ThinkPad-X280>
Lost patience with more merge failures.
[PATCH 0/5] linux-user: Support extended clone(CLONE_VM)
Message-Id: <87h7vbyowf.fsf(a)linaro.org>
Current Review Queue
====================
* [virtio-dev] [PATCH v5 00/10] introduce virtio vhost-user backend device type
Message-Id: <20200518203721.7625-1-ndragazis(a)arrikto.com>
Added: <2020-07-15 Wed>
* [PATCH v4 00/22] target/xtensa: implement double precision FPU
Message-Id: <20200711110655.20287-1-jcmvbkbc(a)gmail.com>
Added: <2020-07-13 Mon>
* [PATCH v3 00/19] mailmap: Add more entries to sanitize 'git log' output
Message-Id: <20200702173818.14651-1-f4bug(a)amsat.org>
Added: <2020-07-02 Thu>
* [PATCH v3 0/9] memory: assert and define MemoryRegionOps callbacks
Message-Id: <20200630122710.1119158-1-ppandit(a)redhat.com>
Added: <2020-06-30 Tue>
--
Alex Bennée
Progress:
* VIRT-65 [QEMU upstream maintainership]
+ More wrangling of release stuff and unreliable infrastructure.
* VIRT-364 [QEMU support for ARMv8.1-M extensions]
+ Managed to find a few days to put in some more work pushing fp16
handling forwards. I now have implementations of fp16 for most of
the VFP insns (still todo: VCVT, VSEL, VMAXNM/VMINNM, VRINT*; then
the few insns that are new-for-fp16. Then all of Neon, which is larger.)
thanks
-- PMM
