3 day week.
[LLVM-122] BTI and PAC support in lld, llvm-readobj, llvm-objdump
- Now in upstream review. Most of the week spent writing and updating tests.
Some time reviewing some asm goto patches patches.
Planned absences:
Holiday Friday 31st May.
== Progress ==
* Out of office 22 & 24 May
* [GlobalISel] Refactor CallLowering [LLVM-568]
- In progress, likely going to take a while
- Found a minor bug in the lowering for AArch64 (I can get it to
crash on some edge case), not sure if it's worth fixing independently
since it gets fixed anyway with the refactoring that I have in
progress
- Trying to understand an AMDGPU failure
== Plan ==
* Out of office 29 May - 10 June
* More of the same
o LLVM
* 8.0.1-rc1 ARM and AArch64 Binaries uploaded.
* Buildbots: One fixe committed upstream.
* Machine outliner:
- Fixed liveness issue.
- Preparing pat6ch for re-submission
o Misc
* Various meetings and discussions.
[VIRT-343 # ARMv8.5-RNG, Random Number Generator ]
Merged!
[VIRT-263 # ARMv8.1-VHE Virtual Host Extensions ]
Started dusting off and rebasing wip.
[VIRT-339 # ARMv8.5-BTI, Branch Target Identification ]
Started reviewing the kernel patch set for this feature.
[VIRT-327 # Richard's upstream QEMU work ]
PR for tcg gvec work.
PR for Sato-san's RX target.
Patch set to update capstone and enable s390x.
GSOC: Review v3 of Jan's enable risu for x86 patch set.
[Other]
Travel arrangements for Xilinx meeting in San Jose, June 13.
Will need to pick Peter's brain re m-profile before then.
r~
== This Week ==
* PR88833 (4/10)
- Started investigating the issue, it seems one of the code-movement
RTL passes like cse2
do not remove identical register copies resulting in extra register move.
* PR88837 (5/10)
- Patch almost approved offline by Richard, suggested me to move
discussion upstream.
- Observed "strange" issue with return value vectors on qemu for
run-time tests for fixed-length vectors. Turned out due to mismatch
in vector-length at compile and run time -;)
- Trying to run SVE tests with qemu.
* Misc (1/10)
- Meetings
== Next Week ==
- Continue ongoing tasks
[LLVM-122] BTI and PAC support in LLD
Implementation now working, have written BTI tests, next step is
finishing off PAC tests.
[Misc]
Helped out debugging an asm-goto problem on ARM targets.
Investigated a GNU ld LMA overlap when VMA and LMA got out of sync.
Helped out with CMSIS use of ld scripts when using a fast-model,
needed to get LMA == VMA for program header covering BSS.
QEMU Tooling ([VIRT-252])
=========================
QEMU plugin support ([VIRT-280])
- synced up with Emilio, will take over branch and submit
- latest branch is [plugins/plugins-v3]
- will peel off simple clean-ups and tweaks next week
- then need to split up some more and better separate code
- exposed plugin_disas to for "howvec" instruction counter
- some [example] [output] while booting kernel
[VIRT-280] https://projects.linaro.org/browse/VIRT-280
[plugins/plugins-v3]
https://github.com/stsquad/qemu/tree/plugins/plugins-v3
[example] http://ix.io/1JXC
[output] http://ix.io/1JXl
GSoC Mentoring ([VIRT-348])
- planning for start of coding next week
[VIRT-348] https://projects.linaro.org/browse/VIRT-384
Upstream Work ([VIRT-109])
==========================
- prepared [testing/next] for PR
[VIRT-109] https://projects.linaro.org/browse/VIRT-109
[testing/next] https://github.com/stsquad/qemu/tree/testing/next
Completed Reviews [3/3]
=======================
{RISU v3 00/11} Support for i386/x86_64 with vector extensions
Message-Id: <20190523204409.21068-1-jan.bobek(a)gmail.com>
{PATCH v10 00/20} gdbstub: Refactor command packets handler
Message-Id: <20190521095948.8204-1-arilou(a)gmail.com>
- CLOSING NOTE [2019-05-24 Fri 17:30]
awaiting re-spin with tags applied.
{RFC v2 00/38} Plugin support
Message-Id: <20181209193749.12277-1-cota(a)braap.org>
- CLOSING NOTE [2019-05-24 Fri 17:47]
taking over the tree
Absences
========
- May 27th is a Bank Holiday
- May 31st working on train in the afternoon
Current Review Queue
====================
* {PATCH 0/5} tests/vm: Python 3, improve image caching, and misc
Message-Id: <20190329210804.22121-1-wainersm(a)redhat.com>
* {Qemu-devel} {PATCH for-4.1 v2 00/36} tcg: Move the softmmu tlb to CPUNegativeOffsetState
Message-Id: <20190328230404.12909-1-richard.henderson(a)linaro.org>
* {Qemu-devel} {RFC v4 0/7} Baby steps towards saner headers
Message-Id: <20190523081538.2291-1-armbru(a)redhat.com>
* {Qemu-arm} {PATCH v2 0/4} hw/arm/boot: handle large Images more gracefully
Message-Id: <20190516144733.32399-1-peter.maydell(a)linaro.org>
* {Qemu-devel} {PATCH v12 00/12} Add RX archtecture support
Message-Id: <20190514061458.125225-1-ysato(a)users.sourceforge.jp>
* {PATCH 00/13} target/arm/kvm: enable SVE in guests
Message-Id: <20190512083624.8916-1-drjones(a)redhat.com>
--
Alex Bennée
Progress:
* VIRT-65 [QEMU upstream maintainership]
+ sent patchset fixing a handful of simple GICv3 bugs
+ usual codereview work
+ sent out a sketch of how we can transition our documentation
from the current texinfo manual to a set of sphinx manuals
+ had a look at the practicalities of converting our hand-written
VFP decoder to 'decodetree' -- this may be the easiest way to
support FPU configs which only support single-precision, like Cortex-M33
thanks
-- PMM
== Progress ==
* FDPIC
- GCC: Updated patch 03/21 with changes in the handling of -static
according to feedback. Pinged the whole series.
* GCC upstream validation:
- reported a couple of regressions
* Infra
- [stalled] working on adding binutils regression testing to round-robin jobs
- cleanup
- handling some problems with boards upgrades and crashes
== Next ==
FDPIC:
- GCC: handle feedback
UBSAN/bare-metal: look at how to make it easier to use on CPUs that
lack sync primivites (eg cortex-m0)
