VirtIO Related Work
===================
This is essentially a mind-map of bullet points as we work out what
concrete work items should be implemented by the TCWG Virt hackers
(most likely just me ;-)
Xen for Automotive ([LBI-24])
- Things that need doing
- support for virtio in core (i.e. not just emulated devices)
- support for virtio-iommu and sharing memory between guests
(ivshmemv2?)
- support virtio over ivshmemv2 (would native virtio be supported?)
- support for vhost over shared memory (zero copy device emulation)
- support isolating userspace emulation from hvm (vhost-user)
- Why?
- userspace emulation has performance benefits (exit-less, polling)
- growing number of virtio devices for that guests support
[LBI-24] <https://projects.linaro.org/browse/LBI-24>
Virtualizing Android ([LBI-38])
- Builds on Google's work on Cuttlefish
- New Android Device model using VirtIO (including VirtGPU) \o/!
- Used to run on QEMU, now targeting CrosVM
- Potential interest in using as a HAL layer
- Potential work items
- Better support for ARM in CrosVM
- Is QEMU of interest to members? (emulation & tooling - unlike
CrosVM)
- Is a virtualised Android HAL possible
- Where does Hafnium fit it?
[LBI-38] <https://projects.linaro.org/browse/LBI-38>
QEMU Tooling ([VIRT-252])
=========================
Extend gdbstub for SVE ([VIRT-281])
- re-based [a v7 branch]
[VIRT-281] <https://projects.linaro.org/browse/VIRT-281>
[a v7 branch]
<https://github.com/stsquad/qemu/tree/gdbstub/sve-registers-v7>
Upstream Work ([VIRT-109])
==========================
- posted [PATCH v2 00/12] testing/next (with build fixes!) Message-Id:
<20200130113223.31046-10-alex.bennee(a)linaro.org>
- posted [PATCH v2 00/19] testing and plugin updates Message-Id:
<20200213225109.13120-1-alex.bennee(a)linaro.org>
[VIRT-109] <https://projects.linaro.org/browse/VIRT-109>
Completed Reviews [3/3]
=======================
[RFC PATCH 1/2] GitLab CI: avoid calling before_scripts on unintended jobs
Message-Id: <5d0def0e-0943-3345-784d-80f8ccc318b9(a)redhat.com>
[PATCH v1 00/14] tests/vm: Add support for aarch64 VMs
Message-Id: <20200205212920.467-1-robert.foley(a)linaro.org>
- CLOSING NOTE [2020-02-07 Fri 19:56]
Some problems with hangs, not sure about using threads/file
approach.
Added: <2020-02-06 Thu>
[PATCH 0/2] target/arm: Pass arguments by value for sve FMLA/FCMLA
Message-Id: <20200212025145.24300-1-richard.henderson(a)linaro.org>
Absences
========
- 17t-24th Feb Half Term
- 23rd-27th March BUD20
Current Review Queue
====================
* [PATCH v16 00/10] VIRTIO-IOMMU device
Message-Id: <20200214132745.23392-1-eric.auger(a)redhat.com>
Added: <2020-02-14 Fri>
* [RFC][PATCH 0/3] IVSHMEM version 2 device for QEMU
Message-Id: <cover.1573477032.git.jan.kiszka(a)siemens.com>
Added: <2020-02-14 Fri>
* {PATCH v2 0/2} tests/tcg/multiarch: Add tests for implemented real
Message-Id: <1581603905-21565-1-git-send-email-Filip.Bozuta(a)rt-rk.com>
Added: <2020-02-13 Thu>
* [RFC 0/9] Add an interVM memory sharing device
Message-Id: <1580815851-28887-1-git-send-email-i.kotrasinsk(a)partner.samsung.com>
Added: <2020-02-05 Wed>
--
Alex Bennée
Progress:
* VIRT-241 [QEMU ISA Support for A-profile]
- Looking into implementing some of the easier, smaller architecture features
- Implemented ARMv8.1-VMID16 (16-bit VMID support), which is trivial
for QEMU because it doesn't care much about VMIDs
- Working on ARMv8.1-PMU and ARMv8.4-PMU: it turns out that we already have
most of these extensions, so we just need to finish off some smaller pieces
and fix one or two bugs. Sent out a patchset implementing these.
- Found a bunch of ID-register related bugs in the process, which I have
fixes for
- Implemented the "mandatory from v8.2" ACTLR2 and HACTLR2 registers
* VIRT-65 [QEMU upstream maintainership]
- code review:
- series from Laurent fixing a long-standing issue with handling of
realtime signals in our linux-user code
- imx6 model patches to fix a watchdog device bug and add the
watchdog to our imx6 boards
- final few unreviewed patches in rth's "PAN, ATS1E1, UAO" series
- respin of the json QAPI Sphinx conversion patchset; hopefully the
first half of this is now uncontroversial cleanups that can go in
while the second half gets code reviewed
thanks
-- PMM
o LLVM:
* 10.0.0 RC:
- reported issues upstream
- upload AArch64 binaries
* IR Outliner:
- looking at the branch status
o Misc
* Resurrected an old GNU toolchain prototype w/r to Linux kernel
size reduction.
* Various meetings and discussions.
== Progress ==
* BFD Linker:
- GNU-629: non-contiguous memory support: posted v3, no feedback yet.
* GCC:
* GCC-9: continued work for validation of -mpure-code on v6m:
reproduced latent bug on trunk, fix accepted, but I'm still worried by
it not setting all insn attributes correctly.
* GCC upstream validation:
- reported a couple of failures/regressions
- FDPIC build broken on trunk
* misc:
- infra fixes / troubleshooting / reviews
== Next ==
* Binutils: GNU-629: support non-contiguous memory regions in linker
* GCC-9: continue work for validation of -mpure-code on v6m
* Fix FDPIC build
[ Linux on ARM mini-conference ]
2 days. Some interesting stuff in the future hardware directions talks.
Helped out a bit with ABI history in the toolchain breakout session. Some good
hallway discussion, especially re record-replay on aarch64.
I should make time this weekend to produce a more complete trip report.
[VIRT-263 # ARMv8.1-VHE Virtual Host Extensions ]
Posted v7 -- merged!
[VIRT-262 # ARMv8.1-PAN ]
[VIRT-273 # ARMv8.2-ATS1E1 ]
[VIRT-276 # ARMv8.2-UAO ]
Posted v3.
[VIRT-327 # Richard's upstream QEMU work ]
Random patch review.
Updated some aa32 vfp cleanup patches; still need to
re-test and post.
r~
Progress:
* VIRT-65 [QEMU upstream maintainership]
- sent pullreq with some of the pending rST doc conversion work
- finished the work on converting the json QAPI doc comments from
texinfo to rst, and sent out a patchset for this
- code review:
- Cornelia's patches rstifying some s390 docs
- rth's 'Reduce aa64_va_parameter overhead' patch
- a patchset fixing some minor memory leaks in timer devices
- rth's PAN/ATS1E1/UAO patchset
- sent out an arm pullreq
I seem to be currently keeping on top of the code-review queue
with about an afternoon a week spent on review, which is pleasing.
thanks
-- PMM
Progress:
* VIRT-65 [QEMU upstream maintainership]
- more work on rST doc conversion. I've started in on converting the
documentation that we auto-generate from doc comments in json files
(this covers QEMU's QMP protocol and a similar protocol for the
guest-agent).
I now have something that is basically the right shape and correctly
handles 'Command' and 'Object' (with 'Enum' and Alternate' and some
other corner cases still to do). Might be able to send a patchset out
next week with luck. This is I think the last major obstacle to the
rST conversion -- once it's done the rest is just simple-but-tedious
conversion of the remaining document files.
- code review:
+ aspeed 'misc fixes and extensions' patchset
+ "Stop wrongly programming GICR_PENDBASER.PTZ bit" bugfix patch
+ KVM 'adjust virtual time when VM starts/stops' patchset
+ last few unreviewed patches in RTH's VHE patchset respin
-- PMM
