=== Work done during the past 2 weeks ===
* Resurrect code size optimization for fmul/dmul from Tony Wang: bootstraping
+ rework slightly to better deal with switch of section and deal with
several possible section layout
+ start anew with a new approach based on symbol visibility
-> works without -gc-sections and does not rely on section layout
* Fix -mslow-flash-data: ready to upstream on Monday
+ some more cleanup and code improvement
* LLVM-432 (Support arithmetic on FileCheck regex variable):
+ started reworking parsing code to be separate from evaluation and support
more complex expression
* Infrastructure code review
=== Plan for week 47 ===
* LLVM-432 (Support arithmetic on FileCheck regex variable):
+ extend testcase coverage (add tests for latest syntax change and
add more negative testing)
+ finish cleaning up the code
* Try to reproduce perf issue mentioned in week #30's weekly report on
latest perf
* Line management.
Progress:
* VIRT-251 [AArch32 Hyp/running microvisors]
- fixes to the issues running L4Re/Fiasco have now been committed
to QEMU master for the 3.1 release
- some minor remaining missing functionality not needed for these guests
has been recorded as subtasks of VIRT-65
- this Epic is now closed!
* VIRT-65 [QEMU upstream maintainership]
- release work
- looked again at automation of uploads to the Coverity Scan service
(last try was last year); sent out revised patchset
- code review:
+ "sbsa reference board" model
+ LOR, HPD, AA32HPD extension support (rth)
+ Minimize TLB flushing for ASID changes (rth)
+ Support for loading uboot "noload" uimage files
+ better PMUv3 emulation
+ micro:bit SoC device models
thanks
-- PMM
== Progress ==
* FDPIC
- Cortex-M uClibc-ng patch still pending
- GCC: updated patches and sent v4
Tried to isolate the regressions observed on xtensa uclinux
toolchain with my patches.
Built a qemu-system-arm -based platform to run tests involving the
kernel. Built and ran a few LTP tests.
Unfortunately, LTP has dropped/is dropping support for uclinux
configs, for lack of interest
* GCC upstream validation:
- reported a few regressions
- dealing with some random results, again
* GCC:
- bug report on aarch64 about misaligned accesses. Waiting for more
details to reproduce the problem.
* misc (conf-calls, meetings, emails, ....)
- reviewing infra script patches
== Next ==
FDPIC:
- GCC: handle feedback on v4 patches
- uclibc-ng: look at how to test fdpic mode with openadk
== Progress ==
* Catch up on things
- Remind myself what a laptop looks like, install updates etc etc
- Figure out new links, machines etc
- Clean up inbox
* [LLVM-59] Small changes to the LLVM helper scripts
- Had a look at all the remaining issues and closed them as obsolete
or already implemented
* [LLVM-479] Check current status of GlobalISel
- Read the mailing list to see what I’ve missed
- Started looking at the code
- Trying to run the test-suite on a TK1
* Misc
- Fixed a simple buildbot breakage
- Meetings
== Plans ==
* LLVM-479
== This Week ==
* GNU-405: Implement division using vrecpe/vrecps (1/10)
- Committed patch
* SVE ACLE (2/10)
- Continue work on shift intrinsics
* PR83750 (1/10)
- Addressing upstream comments
* Holidays (6/10)
- Diwali festival
== Next Week ==
- Continue working on SVE ACLE and PR83750
o 4 days week.
o LLVM
* 7.0.1-rc2:
- Built ARM and AArch64 binaries
- Investigating miscompare on AArch64
* Machine Outliner on ARM prototype:
- Investigating issues in PIC mode
- Testing IR Outliner
o Misc
* Various meetings and discussions.
[VIRT-241 # QEMU ARMv8.x support ]
The new ARM ARM was released (DDI0487 D_a) including ARMv8.4.
Add jira cards for all of the v8.4 features. Rearrange all of
the stories into a hierarchy so that it's easier to track which
cards belong to which architecture revision.
[VIRT-263 # ARMv8.1-VHE Virtual Host Extensions ]
Working my way through this rather large extension:
* Cleanup (most) direct uses of hcr_el2.
* Add new hypervisor virtual timer.
* Add contextidr_el2 and use it in breakpoint matching.
* Add system register aliasing and redirection.
* Added a new mmu_idx for the NS EL2&0 regime;
working through all the places that should be handled.
[Upstream]
Posted kvm-vs-idregs patch set v3.
r~
== Progress ==
* FDPIC
- Cortex-M uClibc-ng patch still pending
- GCC: handling feedback on v3 patches.
Managed to build/check xtensa uclinux toolchain with my patches.
Largely better, but a few new failures.
- working on kernel + qemu-system env to run more tests. Got help from
Nicolas Pitre.
* GCC upstream validation:
- reported a few regressions
- dealing with some random results, again
* GCC:
- bug report on aarch64 about misaligned accesses. Waiting for more
details to reproduce the problem.
* misc (conf-calls, meetings, emails, ....)
- reviewing infra script patches
== Next ==
FDPIC:
- GCC: followup v3 patches
- uclibc-ng: look at how to test fdpic mode with openadk
- use qemu-system mode to run more tests
Progress:
* VIRT-65 [QEMU upstream maintainership]
- code review
+ more microbit device models
+ some raspi device model improvements
- sent patches for more Coverity issue fixes
- put together a list of source files still with legacy
non-QOM device models (about 60 files total)
- tagged QEMU 3.1.0 rc0
* VIRT-251 [aarch32 Hyp/running microvisors]
- tracked down a regression affecting L4Re guest: we had
misimplemented HCR.{VI,VF}. Sent patchset reverting the
broken version and implementing the correct semantics.
- finally tracked down why the 32-bit version of L4Re/Fiasco was
crashing -- we were incorrectly implementing Hyp mode as having
a banked r14, but it shares that register with User and System modes.
- These patches fix all the known issues with these guests.
thanks
-- PMM
