[llvmlinux] Minutes from this week's LLVMLinux meeting
Behan Webster
behanw at converseincode.com
Fri Oct 26 15:55:25 UTC 2012
From shared meeting Google doc
https://docs.google.com/a/converseincode.com/document/d/19ujIPqU0UAb8OKIoGrAysp-D7LSjJuxwoFVh0s4A5JI/edit
LLVMLinux Project: http://llvm.linuxfoundation.org/
This week the meeting was on Thursday, Oct 25 2012 on Google Plus Hangout at 4pm UTC.
https://www.google.com/calendar/embed?src=su5vu85fj58ncfrgalmq4vbbf0%40group.calendar.google.com&ctz=GMT
If you haven't use G+ Hangouts before, make sure you have the appropriate Chrome or Firefox plugin installed, and tested before the time of the meeting. You can try a test hangout with me today before the meeting if you want to.
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Last weeks top 2-3 work items:
Behan: Upstream common kernel patches, get clang working again (investigate current compile issues + unpatched clang), network testing
Bryce:
Jan-Simon: (travel) - x86 head
Tinti: finish rpi build, test on a real rpi, review documentation, try to add gdb/strace tools to initramfs
Mark:
Help resolve memory leak issue in clang build
Make user space test SW use integrated assembler and clang for compilation
Should user space use EABI build or not? If so, use compiler-rt
Look at merged globals issue if time
Study posibilities to port RT Prempt patch to LLEM kernel
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Agenda for this week:
(5 mins total) Everyone shared a quick summary of the progress they've made from the last 2 weeks
Behan:
Fixed clang build issues
Investigated and rebuilt VLAIS patches to more easily get them upstream.
Tinti: Raspberry Pi build and booting. Unable to review documentation.
Jan-Simon:
Tracking down section mismatches ( https://88.198.106.157/pad/p/llvm-section-mismatch )
x86 HEAD (WIP, waiting for update from pipacs / v3.6)
(45 mins) General meeting discussions:
Module unloading
Mark has proved it works with Vexpress
Tinti will test in rpi
JSM is still testing it in X86. Not working yet. (code ends up in ".text" instead of ".exit.text")
SROA bug fix at http://llvm.org/bugs/show_bug.cgi?id=14034
VLAIS discussion
Adopted VLAIS patches from Pipacs into arch/all
Introduced valign.h with macros to do VLAIS-like calculations
Rewrote vlais-gadget to be less intrusive
QEMU Networking discussion
Can we remove qemu from the build and use the distro packages of qemu?
JSM to try qemu on OpenSUSE to make sure it works
BW to try and get LF IT to install qemu on buildbox server
Resolved Clang issues
Turned out to be a bad merge by BW of rpi patches from Tinti
Resolved
Review bug list (please update your bugs on the website before the meeting)
Review todo/roadmap list (please update your todos on the website before the meeting)
LLVM 3.2 is approaching. We need to upstream our LLVM/Clang patches
Ready for pushing:
paired-register for 64-bit patch (Submitted by Qualcomm?)
Handle empty archive
Integrated-as-single-quoted
ripel
RFC upstream: ELF emit patch (adds unknown opcodes) -
Needs investigation:
Integrated as octa? (needs
integrated AS macro
Init mem poisoning kills the kernel
Mark tested this, and its working now.
Review the project Roadmap/Timeline to take us to the end of the year
https://docs.google.com/a/converseincode.com/spreadsheet/ccc?key=0AoeRmB6JBVt_dGYwSUNNNHd2SFFMWF9yMTRoa2VuZmc#gid=0
Raspberry-Pi
Tinti will write an article for http://www.raspberrypi.org/
Test module loading/unloading
http://www.youtube.com/watch?v=SnFU7DoBwSU&feature=plcp
(5 mins) Each meeting attendee listed the top 2 items to be worked on for the next 2 weeks
Behan:
Working on upstreaming kernel patches
Making sure our LLVM patches get upstream to LLVM project
Tinti:
Test module loading/unloading
Documentation review
Write Raspberry Pi & Clang article
Check USB/Ethernet issue on RPI
Jan-Simon:
Section Mismatches and
x86 update to v3.6/HEAD
--
Behan Webster
behanw at converseincode.com
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