Last week:
Holiday.
3 days at GNU Cauldron. Highlights:
* Talked with arm folk re the sve simd abi,
* Talked with arm folk re valgrind support for sve,
* Talked with riscv folk re their nascent vector extension,
* Peter Sewell's memory object semantics for defacto c.
This week:
Caught up on email backlog.
Queued a few patch sets for first 3.1 tcg-next pull.
Posted an rfc for adjusting arm id system regs vs feature bits.
r~
Hi Mathias,
I am not able to reproduce error in
https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a7…
Do you have any instructions for reproducing it locally.
This is what I have done:
Downloaded https://www.python.org/ftp/python/2.7.4/Python-2.7.4.tgz
Applied following patch to build for aarch64:
diff -r 84cef4f1999a -r 05e8999a3901 Modules/_ctypes/libffi/fficonfig.py.in
--- a/Modules/_ctypes/libffi/fficonfig.py.in Mon Apr 29 16:09:39 2013 -0400
+++ b/Modules/_ctypes/libffi/fficonfig.py.in Tue Apr 30 01:00:34 2013 +0200
@@ -28,6 +28,7 @@
'PA': ['src/pa/linux.S', 'src/pa/ffi.c'],
'PA_LINUX': ['src/pa/linux.S', 'src/pa/ffi.c'],
'PA_HPUX': ['src/pa/hpux32.S', 'src/pa/ffi.c'],
+ 'AARCH64' : ['src/aarch64/ffi.c', 'src/aarch64/sysv.S'],
}
ffi_sources += ffi_platforms['@TARGET@']
./configure
Also tried ./configure --enable-pydebug and --disable-optimization
Also tried changing to -O0 manually in the make file
make
./python Lib/test/regrtest.py -v test_ctypes
Used gcc version 8.2.1 20180907 (GCC)
Results are OK.
Thanks,
Kugan
o LLVM
* Buildbots babysitting
* LLVM Kernel CI babysitting
* Machine Outliner on ARM prototype still on-going
o Misc
* More Jira gardening
* Various meetings and discussions.
Upstream Work ([VIRT-109])
==========================
- reviewed {Qemu-devel} {RFC PATCH v2 0/7} QEMU binary instrumentation
prototype Message-Id:
<152819515565.30857.16834004920507717324.stgit@pasha-ThinkPad-T60>
- reviewed {PATCH 0/6} qht improvements for 3.1 Message-Id:
<20180817232923.28899-1-cota(a)braap.org>
- investigating CI failure in master:
- The [Travis builds have been broken for a while]
- meanwhile it looks like [atomic_8 issues have broken 32 bit
builds]
[VIRT-109] https://projects.linaro.org/browse/VIRT-109
[Travis builds have been broken for a while]
https://travis-ci.org/qemu/qemu/builds
[atomic_8 issues have broken 32 bit builds]
https://app.shippable.com/github/qemu/qemu/dashboard
Other Tasks
===========
- Continued working on "My Other Machine is Virtual" talk for YVR18
- finished main talk, iterating and practising now
- also made a few [fixes and enhacements for tlb tracking]
- Administrava
- caught up with expense claims for SynQuacer
- organising for KVM Forum 2018
[fixes and enhacements for tlb tracking]
https://github.com/stsquad/qemu/tree/misc/dfilter-and-trace-tweaks-v2
Completed Reviews [2/2]
=======================
{Qemu-devel} {RFC PATCH v2 0/7} QEMU binary instrumentation prototype
Message-Id: <152819515565.30857.16834004920507717324.stgit@pasha-ThinkPad-T60>
- CLOSING NOTE [2018-09-07 Fri 15:40]
Some interesting ideas but I think the interface needs to be a bit
richer and expose the tcg code generation to the plugins.
{PATCH 0/6} qht improvements for 3.1
Message-Id: <20180817232923.28899-1-cota(a)braap.org>
- CLOSING NOTE [2018-09-07 Fri 16:35]
Good improvements to test coverage, one minor tweak needed
{PATCH 0/6} target/arm: More sve-ish fixes
Message-Id: <20180810193129.1556-1-richard.henderson(a)linaro.org>
- CLOSING NOTE [2018-09-07 Fri 16:36]
Already in target-arm.next
{Qemu-devel} {PATCH 0/3} synchronization profiler
Message-Id: <20180813171132.21939-3-cota(a)braap.org>
- CLOSING NOTE [2018-09-07 Fri 17:41]
Already merged
Absences
========
- Holiday (16th-28th August 2018)
- YVR18 Connect (17th-21st September 2018)
- KVM Forum 2018 (24th-26th October 2018)
Current Review Queue
====================
* {Qemu-arm} {PATCH 00/15} gdbstub: support for the multiprocess extension
Message-Id: <20180901124639.19735-1-luc.michel(a)greensocs.com>
* {PATCH 0/6} i386 + x86_64 mttcg
Message-Id: <20180903171831.15446-1-cota(a)braap.org>
* {Qemu-devel} {PATCH v4 0/5} Acceptance/functional tests
Message-Id: <20180530184156.15634-1-crosa(a)redhat.com>
* {Qemu-arm} {PATCH 00/10} target/arm: Some pieces of support for 32-bit Hyp mode
Message-Id: <20180814124254.5229-1-peter.maydell(a)linaro.org>
* {PATCH 00/20} target/arm: sve system mode patches
Message-Id: <20180809042206.15726-1-richard.henderson(a)linaro.org>
* {PATCH v4 00/14} fp-test + hardfloat
Message-Id: <1528768140-17894-1-git-send-email-cota(a)braap.org>
--
Alex Bennée
[Linaro Connect]
- Wrote my presentation for the official track (on using Clang
libtooling and ASTMatchers)
- Started working on hackroom presentation on profile guided
optimisation in LLVM.
In both cases writing a presentation on something you don't know much
about forces you do a lot of learning.
Plans for next week:
- Finish hackroom presentation.
Spare time will be spent on reviews and llvm/clang bugs
=== Work done during this 3-day week ===
* TCWG-1428 (Support arithmetic on FileCheck regex variable):
+ continue to rework patch, feature complete and most testcase pass
+ sent another external email to hammer a few details
* Arm new starter welcome and related faff
* GNU Tools Cauldron + travel from Thursday to Sunday
=== Plan for week 37 ===
* TCWG-1428 (Support arithmetic on FileCheck regex variable):
+ fix last bugs, start testing and cleanup
* Try to reproduce perf issue mentioned in week #30's weekly report on
latest perf
* One day off
o LLVM
* Machine Outliner on ARM prototype:
- fixup and testcases work still on-going
- first benchmark results
* Buildbots babysitting
o Misc
* More Jira gardening
* Various meetings and discussions.
Other Tasks
===========
- Continued working on "My Other Machine is Virtual" talk for YVR18
- got working heatmaps for coverage
- writing up TCG memory tracing
Absences
========
- Holiday (16th-28th August 2018)
- YVR18 Connect (17th-21st September 2018)
- KVM Forum 2018 (24th-26th October 2018)
Current Review Queue
====================
* {PATCH 0/6} qht improvements for 3.1
Message-Id: <20180817232923.28899-1-cota(a)braap.org>
* {Qemu-devel} {PATCH 0/3} synchronization profiler
Message-Id: <20180813171132.21939-3-cota(a)braap.org>
* {PATCH 0/6} target/arm: More sve-ish fixes
Message-Id: <20180810193129.1556-1-richard.henderson(a)linaro.org>
* {Qemu-arm} {PATCH 00/10} target/arm: Some pieces of support for 32-bit Hyp mode
Message-Id: <20180814124254.5229-1-peter.maydell(a)linaro.org>
* {PATCH 00/20} target/arm: sve system mode patches
Message-Id: <20180809042206.15726-1-richard.henderson(a)linaro.org>
* {PATCH v4 00/14} fp-test + hardfloat
Message-Id: <1528768140-17894-1-git-send-email-cota(a)braap.org>
--
Alex Bennée
* very short week: off Monday/Tuesday
== Progress ==
* FDPIC
- uClibc-ng: patches committed upstream
- GCC: handling feedback on v2 patches
* GCC upstream validation:
- trunk build broken for a while on RHEL6 (gcc-4.4.7)
- fixed upstream just before I reported the problem
- my scripts now use gcc-5.4.0
* misc (conf-calls, meetings, emails, ....)
- book hotel/plane for GNU Cauldron and Connect
== Next ==
FDPIC:
- GCC: handle v2 patches feedback
- uclibc-ng: look at how to test fdpic mode with openadk
- Connect: prepare hacking room presentation
- GNU Cauldron 2018
=== Work done during this week ===
* TCWG-1379 / GCC PR85434 / CVE-2018-12886: rework needed
+ finished testing and submitted for external review
* TCWG-1428 (Support arithmetic on FileCheck regex variable): address comments
+ continue to rework patch
* Regression testing of LLVM release process:
+ Add support to build from a branch (incl. trunk)
+ Make weekly regression testing from trunk
+ start enabling regression testing of Linaro LLVM release process
when scripts it use change
* Prepare for becoming a line manager next week
=== Plan for week 36 ===
* Welcome new starter
* Finish enabling regression testing of Linaro LLVM release process
when scripts it use change
* DSGHACK-25 (Support arithmetic on FileCheck regex variable): address comments
+ continue to rework patch
* Try to reproduce perf issue mentioned in week #30s weekly report on
latest perf
[VIRT-249 # SVE system mode emulation ]
Fixed a bug in last week's reorg, reported by Laurent.
Fixed a bug in our risu scripts for generating sve memory ops;
I was able to replicate Laurent's failure in risu, finally, and
then fix it. Still need to clean up the risu patch for submission.
[Upstream]
Reviewed mips mxu tcg patch set.
Reviewed s390 afp tcg patch set.
r~
== This Week ==
* TCWG-1234: Hoisting and register pressure (4/10)
- Came up with another heuristic to avoid spill
- Verified it does not regress other test-cases (testsuite + private benchmarks)
* TCWG-319: Use vrecpe / vrecps to implement division (1/10)
- Rebased patch and validated it
- Seems like the issue of bad data alignment is also now seen with
armhf. Investigating
it further.
* PR83661 (2/10)
- Finished with patch prototype
* Public Holiday (2/10)
* Misc (1/10)
- Committed a typo fix in r263819
- Meetings
== Next Week ==
- Continue ongoing tasks
o LLVM
* Machine Outliner on ARM prototype:
- stack fixup support on-going
- test coverage in machine IR
* Buildbots babysitting
o Misc
* Jira gardening
* Various meetings and discussions.
[VIRT-198 # QEMU: SVE Emulation Support ]
Adjusted patch set based on Peter's review and upstreaming.
We talked about a method to initialize cpu config registers.
[Upstream]
Review:
nanomips round 11, now mostly pushed to master.
MPS2 patch set
raspi frame buffer patch set
Partway through a round 6 of the do_syscall split.
r~
Investigated yet another sanitizer related buildbot failure. This time
it looks like latent problems in the compiler-rt/cfi implementation
and tests provoked by the introduction of the Arm LLD bot.
- cfi requires LTO so it requires a bot using LLD or a bot configured
to run gold with the LTO plugin. Raised upstream PR on cfi.
[Linaro Connect]
Made some more progress on a clang-tool example to use for my
presentation on how to build a clang tool. Learned quite a bit more
about ast-matchers and the clang-ast.
[LLD]
Committed support for Armv5 and Armv6 in LLD.
[Miscellaneous]
Quite a heavy patch review week.
Planned absences:
On holiday on Tuesday
Progress:
* VIRT-65 [QEMU upstream maintainership]
+ put some reviewed MPS device patches into master, did a v2 of the
rest and sent them out again; these are now in master
+ ditto with patches for missing AArch32-Hyp features
+ code review:
- rth's patchset fixing float/int-with-scaling conversion
- rth's patchset adding system mode support for SVE
- linux-user: netlink fixes
+ sent out a patchset that wires up the GICv2 virtualization
memory regions and IRQs on the remaining boards that need it;
got this into master
thanks
-- PMM
Note: annual leave tomorrow and Friday, as per my calendar
=== Work done during 3-day week ===
* TCWG-1379 / GCC PR85434 / CVE-2018-12886: rework needed
+ fix 2 more issues with retesting each time
* More knowledge transfer within Arm (writing a script to automate manual
task in GNU Arm Embedded Toolchain release to allow others to do it)
* TCWG-1428 / DSGHACK-25 (Support arithmetic on FileCheck regex variable):
address comments
+ continue to rework patch
* Enable weekly regression testing of LLVM release process jenkins job
* 2 days off annual leave
=== Plan for week 35 ===
* Enable regression testing of Linaro LLVM release process when scripts it
use change
* TCWG-1428 / DSGHACK-25 (Support arithmetic on FileCheck regex variable):
address comments
+ continue to rework patch
* TCWG-1379 / GCC PR85434 / CVE-2018-12886: rework needed
+ submit for external review
* Try to reproduce perf issue mentioned in week #30s weekly report on
latest perf
[VIRT-198 # QEMU: SVE Emulation Support ]
Fixed a double-rounding bug affecting scaled conversion
from integer to float.
[Upstream]
Posted a proposed fix for 128-bit atomic detection.
Posted v4 of linux-user syscall split.
Review of nanomips, round 9.
r~
* One day off
o GNU
* Committed Linaro version string and macros patch in ARM GCC 8 vendor branch
o LLVM
* libcxxabi exception address alignment test failure:
- Committed in trunk and merged into 7.0 branch
* Machine Outliner on ARM prototype:
- LR saving and stack fixup support on-going
* Buildbots babysitting
o Misc
* Jira gardening
* Various meetings and discussions.
Note: I'll be on holidays Thursday and Friday next week.
=== Work done during 3-day week ===
* TCWG-1379 / GCC PR85434 / CVE-2018-12886: rework needed
+ heavy testing
* TCWG-1337 / LLVM PR34170: get backport to LLVM 7 branch
* create design review for -mfpu=auto option in GAS
-> https://confluence.arm.com/display/CTP/Auto+FPU+for+GNU+as
* Knowledge transfer within Arm
* Misc:
+ GCC Linaro sync
* 2 days off taking care of my feverish child
=== Plan for week 34 ===
* Enable regression testing of Linaro release process
* TCWG-1428 (Support arithmetic on FileCheck regex variable): address
comments
+ continue to rework patch
* TCWG-1379 / GCC PR85434 / CVE-2018-12886: rework needed
+ investigate aarch64 glibc regression
* Try to reproduce perf issue mentioned in week #30s weekly report on
latest perf
4 day week, out on holiday Wednesday.
[TCWG Jira]
- Recommendations made on what to do with outstanding epics.
- Will be making the changes on Monday.
[Linaro Connect]
- Research for presentation on libtooling.
- Outline of presentation written and made a start on the first of the examples.
- Will be doing a further presentation in the hack-room on LLVM
profiling and code-size
Involved in more than the usual amount of reviews.
Progress:
* VIRT-65 [QEMU upstream maintainership]
+ got 3.0 release out of the door!
+ code review:
- lots of Cortex-M0 and micro:bit patches
- model of Freescale i.MX6 UltraLite 14x14 EVK Board
- hw/arm: make bitbanded IO optional on ARMv7-M
- imx_spi: Unset XCH when TX FIFO becomes empty
- hw/arm/mps2-tz: Replace init_sysbus_child() with sysbus_init_child_obj()
- imx_serial: Generate interrupt on receive data ready if enabled
- target/arm: Fix crash on conditional instr in it block
- supporting migration of pending-SError state in KVM
+ sent a patchset deleting the now-obsolete MMIO request_ptr APIs
+ some tidyup of JIRA issues
+ trying to add a SPARC box back into our build-and-test set
thanks
-- PMM
Hi, dear toolchain team
I'm working on a Cavium ThunderX and want to install the latest Linaro binary release 7.3.1, but it seems no aarch64 native binaries in https://releases.linaro.org/components/toolchain/binaries/latest/aarch64-li…
Can you help on this, thanks very much!
Best Regards, Yi
IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you.
SVE Support ([VIRT-198])
========================
- looked at re-factoring fcvt tests to add tests for rth's recent
fixes
- see [my initial test branch]
- the idea is to make adding a new op test case minimal effort
[VIRT-198] https://projects.linaro.org/browse/VIRT-198
[my initial test branch]
https://github.com/stsquad/qemu/tree/testing/generic-op-tester
Other Tasks
===========
- Started working on "My Other Machine is Virtual" talk for YVR18
- use-case: find hot-block in pure CPU code
- use-case: trace disk activity on system boot
- Added another story to the [Instrumentation EPIC]
[Instrumentation EPIC] https://projects.linaro.org/browse/TCWG-1457
Absences
========
- Holiday (16th-28th August 2018)
- YVR18 Connect (17th-21st September 2018)
- KVM Forum 2018 (24th-26th October 2018)
Current Review Queue
====================
* {Qemu-devel} {PATCH 0/3} synchronization profiler
Message-Id: <20180813171132.21939-3-cota(a)braap.org>
* {PATCH 0/6} target/arm: More sve-ish fixes
Message-Id: <20180810193129.1556-1-richard.henderson(a)linaro.org>
* {Qemu-arm} {PATCH 00/10} target/arm: Some pieces of support for 32-bit Hyp mode
Message-Id: <20180814124254.5229-1-peter.maydell(a)linaro.org>
* {PATCH 00/20} target/arm: sve system mode patches
Message-Id: <20180809042206.15726-1-richard.henderson(a)linaro.org>
* {PATCH v4 00/14} fp-test + hardfloat
Message-Id: <1528768140-17894-1-git-send-email-cota(a)braap.org>
* {PATCH 0/5} tests/vm: Improvements when KVM is not available
Message-Id: <20180717024827.27897-1-f4bug(a)amsat.org>
--
Alex Bennée
