# Progress #
o Upstream GDB
* Make remote packet length in debugging output adjustable (as
opposed to fix to 512 bytes).
* Investigated ARM sim build issues with the GCC default moving to
-fno-common.
o GDB:
* GNU-644 - [GDB, AArch64] gdb.base/step-over-syscalls.exp failures
- No progress yet. Waiting for Kernel feedback.
* [RESOLVED] GNU-645 - gdbserver is not using SVE register
descriptions properly
- Pushed a fix upstream.
* GNU-170 - GDB BZ #21221 - gdb hangs while stepping an empty loop
- On hold for now.
o Friday off
# Plan #
o Upstream GDB
* Fox -fno-common build issues with ARM sim.
o GDB
* GNU-644 - [GDB, AArch64] gdb.base/step-over-syscalls.exp failures
- Continue working on a fix.
== This Week ==
* GCC
- PR92554: Spent some time triaging the issue, but gave up after
Richard posted better fix.
- PR89007: Addressing upstream suggestions.
- PR92608: Committed fix to trunk.
- GNU-583: Looking thru Kugan's patch and upstream discussion.
* Validation
- Submitted patch to add --gcc_patch_file option to abe.
- Submitted patch to remove --interactive from abe.
== Next Week ==
- Continue ongoing tasks
== Progress ==
* GCC:
- -mpure-code on v6m: sent an updated patch, waiting for approval.
* BFD Linker:
- non-contiguous memory support: partial prototype working on the
use-case, but causes regressions.
* GCC upstream validation:
- reported several issues
* misc:
- infra fixes / troubleshooting / reviews
== Next ==
* GCC: pure-code/v6m, handle feedback
* Binutils: support non-contiguous memory regions in linker
QEMU Tooling ([VIRT-252])
=========================
Extend gdbstub for SVE ([VIRT-281])
- worked on [v2 rebase addressing comments]
[VIRT-281] https://projects.linaro.org/browse/VIRT-281
[v2 rebase addressing comments]
https://github.com/stsquad/qemu/tree/gdbstub/sve-registers-v2
Upstream Work ([VIRT-109])
==========================
- general poking around and stress testing on the run up to release
- documented some outstanding issues [on the planning page]
- posted {PULL for rc3 0/5} a few doc and testing tweaks Message-Id:
<20191120105801.2735-1-alex.bennee(a)linaro.org>
- posted {PATCH for 4.2 v1 0/3} some tests/vm fixes Message-Id:
<20191122112231.18431-1-alex.bennee(a)linaro.org>
[VIRT-109] https://projects.linaro.org/browse/VIRT-109
[on the planning page] https://wiki.qemu.org/Planning/4.2
Other Activities
================
- finalising [draft of KVM Forum conference report]
- will publish on Monday once Beata adds the last note
[draft of KVM Forum conference report]
https://collaborate.linaro.org/pages/resumedraft.action?draftId=128647720
Completed Reviews [3/3]
=======================
{PATCH v2 0/6} Make the qemu_logfile handle thread safe.
Message-Id: <20191115131040.2834-1-robert.foley(a)linaro.org>
- CLOSING NOTE [2019-11-22 Fri 17:15]
Ad of v3 this is ready to go, just awaiting the tree to open again
Added: <2019-11-15 Fri>
{PATCH v3 0/6} Make the qemu_logfile handle thread safe.
Message-Id: <20191118211528.3221-1-robert.foley(a)linaro.org>
{PATCH 0/6} Enable Travis builds on arm64, ppc64le and s390x
Message-Id: <20191119170822.45649-1-thuth(a)redhat.com>
Current Review Queue
====================
* {PATCH 0/1} tests/vm: Allow to set path to qemu-img
Message-Id: <20191114134246.12073-1-wainersm(a)redhat.com>
Added: <2019-11-14 Thu>
* {PATCH v7 0/8} Acceptance test: Add "boot_linux" acceptance test
Message-Id: <20191104151323.9883-1-crosa(a)redhat.com>
Added: <2019-11-04 Mon>
* {RFC 0/3} tests/vhost-user-fs-test: add vhost-user-fs test case
Message-Id: <20191025100152.6638-1-stefanha(a)redhat.com>
Added: <2019-10-25 Fri>
* {PATCH v5 00/22} target/arm: Implement ARMv8.5-MemTag, system mode
Message-Id: <20191011134744.2477-1-richard.henderson(a)linaro.org>
Added: <2019-10-11 Fri>
--
Alex Bennée
[Morello]
- LLD finished pre-review refactoring and splitting up into reviewable chunks
- Implemented range-extension and interworking thunks to test
interaction with aligning .text to comply with Cheri Concentrate
- Answered some questions from Linaro tech-leads about Morello
Plans
- Rebase once CUCL merge has been completed and submit for review.
Planned Absences:
Christmas Holiday 16th December - 3rd January inclusive
Progress:
* VIRT-65 [QEMU upstream maintainership]
- code review:
+ Marc-Andre's series trying to get rid of QOM pointer properties
+ various minor bits for rc2
- unsuccessfully tried to work out why one of QEMU's test
cases asserts on BSD hosts only
- some time consumed by office-move
thanks
-- PMM
== Progress ==
* Triaging check-lldb failures on AArch64 [LLVM-512]
- Opened 4 bug reports
- One of them got a lot of attention so I was asked to upload more
logs/try various things
- Still have a couple of test failures to look into
* Morello
- First contact with the team
- Started looking at the internal docs
- Trying to build the existing toolchain
== Plan ==
* Figure out the current state of LLDB for Morello and what needs to be done
* Continue triaging LLDB failures
Dear Linaro,
Dear Linaro I'm using arm cortex A53 (mt6735 [part number]). But I do not know which tool-chain I have to use. I found your website https://www.linaro.org/downloads/ on internet. and my guess is aarch64-linux-gnu. can you please guide me through selecting a proper tool-chain.
Regards,
Saeed Djamali
# Progress #
o Upstream GDB
* More patch reviewing and answering questions.
o GDB:
* GNU-644 - [GDB, AArch64] gdb.base/step-over-syscalls.exp failures
- Managed to track this down all the way to the aarch64
single-stepping infrastructure in the kernel. Created reproduction steps
and sent an e-mail to linux-arm-kernel
- Also noticed a difference in the order in which SIGCHLD's are
delivered between x86_64 and aarch64. This confused GDB, which expects
the ordering it sees on x86_64. Working on a fix.
* Tweaked QEMU setup a little for SVE testing
* GNU-645 - gdbserver is not using SVE register descriptions properly
- Tracked down why gdbserver is not sending SVE register data back
to GDB. Working on a fix.
* GNU-170 - GDB BZ #21221 - gdb hangs while stepping an empty loop
- On hold for now.
# Plan #
o GDB
* GNU-644 - [GDB, AArch64] gdb.base/step-over-syscalls.exp failures
- Continue working on a fix.
* GNU-645 - gdbserver is not using SVE register descriptions properly
- Continue working on a fix.
[VIRT-262 # ARMv8.1-PAN Privileged Access Never]
Started, based on VHE patch set due to mmu_idx reorg therein.
Needs some minor re-work to handle Secure EL1.
[VIRT-273 # ARMv8.2-ATS1E1, AT S1E1R and AT S1E1W instruction variants ]
Started.
[VIRT-327 # Richard's upstream QEMU work ]
Some soft-freeze bug fixing of stuff that I broke this cycle.
Some patch review.
[Kernel]
Posted v7 of the ARMv8.5-RNG patch set. There's some significant
mis-communication going on between me and Mark Rutland; I have no
idea what he wants at this point...
[GCC]
Committed the base asm-flags patch set. Posted a follow-up
to un-break thumb1, and add tests for it.
r~
