* Attended Linaro Connect; notable sessions:
+ Ubuntu plans for QEMU for Ringtail release
= upstream qemu has merged qemu-kvm back in so
Ubuntu will switch to qemu from qemu-kvm for x86
= also makes sense now to use upstream qemu for all archs
(following Debian) rather than using qemu-linaro for non-x86:
reasons for using q-l in Ubuntu now mostly fixed (ie upstream
ARM support no longer dire). Ubuntu will carry omap3 patches
to avoid dropping that feature in the changeover
= makes sense for Linaro too as we now have an automated
package-to-PPA setup for people who need bleeding-edge and
also will want Ubuntu to transition to a more stably released
and supported QEMU codebase to use for KVM-on-ARM-servers
+ KVM Testing plans
= worked through a list of things that would be nice to test;
useful feedback from people in the session about what matters.
Missing: specific commitment by anybody to write tests :-)
+ various informal discussions about possibilities for v8 QEMU
* this week: at LinuxCon Europe / ELC-Europe / KVM-Forum / QEMU Summit
-- PMM
Hi toolchain people,
I've gone through and massaged our meetings and 1-on-1s to handle the
recent daylight savings changes. Most meetings now start at 9:15 am GMT
and 1-on-1s are packed before them if possible.
Let me know if I should massage them further,
-- Michael
== Progress ==
* Attended Linaro Connect
* Worked out focus for performance in next iteration:
* Cortex-A15
* Other discussions on:
* Transitioning from cbuild->LAVA
* ARMv8 GNU Tools support
* big.LITTLE Toolchain tuning
== Next Week ==
* Backport Doko's configury changes for arm-none-linux-gnueabihf support
* Remerge HOT/COLD partitioning to test like for like (TBB generation)
* Benchmark LRA vs Reload on x86 and x86-64
* Write up strawman for non-multitest testing in GCC
== Future ==
* Decide whether the effort to develop HOT/COLD partitioning is worth it.
* Support LRA on ARM.
* Attend Connect in Hong Kong...
--
Matthew Gretton-Dann
Linaro Toolchain Working Group
matthew.gretton-dann(a)linaro.org
Dear All,
We have ARM cross compiler, and building our code. we got below error.
we have GCC Linaro 4.6.4.
arm-linux-gnueabi/bin/ld: DIV usage mismatch between
/home/Release/libasm.a(Blt32_Neon.o) and /home/Release/liblayer.so
arm-linux-gnueabi/bin/ld: failed to merge target specific data of file
/home/Release/libasm.a(Blt32_Neon.o)
is it related to below link ?
http://sourceware.org/ml/binutils/2012-03/msg00211.html
thanks
Hi,
here's some patches for gcc-linaro to make it work with
--host=arm-linux-androideabi
They're the quick and dirty thing to do and look like they could have
been written by Microsoft, needed something working in time for
Connect ;)
gcc-4.7-android-workarounds.patch: Workarounds for things that go
wrong, but where the true cause is yet to be determined (e.g. why
would configure think we have fread_unlocked and friends when we
don't?)
gcc-4.7-libitm-android.patch: Workaround for Bionic not knowing Elf32_auxv_t
gcc-4.7-no-unneeded-multilib.patch: Get the multilib config in sync
with regular Linux
gcc-4.7-stlport.patch: Use stlport instead of libstdc++ (yes, this
sucks - but it's what Android decided to do). Still needs to link
libstdc++ because Bionic contains a libstdc++.so (but it's more like a
libsupc++ - no STL there, but needed for stlport to work).
ttyl
bero
== Progress ==
* HOT/COLD partitioning for PGO
* Initial look at results
* Patch Tracking & Backporting
* Testing Doko's configury changes for arm-none-linux-gnueabihf support
* Connect Prep
* LRA Investigations
* Sign/zero extension II
== Next Week ==
* Linaro Connect
== Future ==
* Attend Connect
* HOT/COLD partitioning for PGO:
* Get two current patches accepted upstream
* Post question upstream about register allocation 'mistakes' I am seeing
--
Matthew Gretton-Dann
Linaro Toolchain Working Group
matthew.gretton-dann(a)linaro.org
Summary:
* Validate and release Linaro binary toolchain 2012.10
* Test
Details:
1. Release Linaro binary toolchain 2012.10
* Fix windows installer issue due to version format change.
* Validate and release Linaro binary toolchain 2012.10.
2. Identify the root cause of PR 54902 (lp:1065559), and Richard
Biener fixed it.
3. Enable SPEC2006 test. Testing is ongoing.
Planed Leaves:
* Nov. 5-7: Off site teambuilding event.
* Nov. 9, 12-13: Annual leaves
Plans:
* Performance test for shrink-wrap.
Best regards!
-Zhenqiang
== track-kvm-abi-changes ==
* updated qemu patches to match Christoffer's v13 tree, committed
all fixes suggested in previous round of code review, rebased
and sent RFC v3 of the QEMU KVM/ARM support patches
== other ==
* rebased qemu-linaro on master; found and fixed a bug which
meant that beagle models crashed when the kernel tried to touch
the USB-OHCI device
* submitted some minor QEMU cleanup patches (last lot of stuff
before softfreeze next week, I expect)
* usual upstream review/etc
* started to look at virtio-mmio patches
* prep for Linaro Connect next week
KVM blueprint progress tracker:
http://ex.seabright.co.nz/helpers/backlog?group_by=topic&colour_by=state&pr…
-- PMM
== Progress ==
* Aarch64 GDB support testing:
- Ran the GDB testsuite via gdbserver on x86
- Made a board file to run against the model
- Tried debugging a simple hello world via gdbserver:
It fails while loading the image, because of a mismatch between
kernel and GDB ptrace interface.
* Aarch64 GDB backport investigation:
- Backported to the Linaro GDB 7.5 release.
- Discussed with ARM people the ptrace issue.
== Next ==
* On vacation.
