APPLIED: SRU LP 1400349 new arm64 optimized copy_to_user and copy_from_user assembly code

[Leann Ogasawara]

Applied to Vivid master-next.

Thanks,
Leann

On Wed, Dec 10, 2014 at 12:24 PM, Craig Magina <craig.magina at canonical.com>
wrote:
>
> This contains a new optimization patch that has been tested and
> verified not to have the same memory corruption issue as the previous.
> The logs for the bug reproduction and testing done with this new patch
> can be found attached to the bug [1].
>
> [1] BugLink: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1400349
>
>
> Trusty
>
> The following changes since commit
> f943c19de5a4af319761aa30f79c7ba8f5aa36ed:
>
>   When ring buffer returns an error indicating retry, storvsc may not
> return a proper error code to SCSI when bounce buffer is not used.
> This has introduced I/O freeze on RAID running atop storvsc devices.
> This patch fixes it by always returning a proper error code.
> (2014-12-10 08:56:25 -0800)
>
> are available in the git repository at:
>
>   git://kernel.ubuntu.com/cmagina/trusty-xgene.git lp1400349
>
> for you to fetch changes up to e4ca122ed833316245489f947cab61e7d531169e:
>
>   arm64: optimized copy_to_user and copy_from_user assembly code
> (2014-12-10 14:44:43 -0500)
>
> ----------------------------------------------------------------
> Feng Kan (1):
>       arm64: optimized copy_to_user and copy_from_user assembly code
>
>  arch/arm64/lib/copy_from_user.S |  87 ++++++++++++++++----------
>  arch/arm64/lib/copy_template.S  | 212
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>  arch/arm64/lib/copy_to_user.S   |  57 +++++++++--------
>  3 files changed, 297 insertions(+), 59 deletions(-)
>  create mode 100644 arch/arm64/lib/copy_template.S
>
>
> Utopic
>
> The following changes since commit
> 6a61c55d0fa1cb7c854fb4307bbdcffffe82b797:
>
>   sched/x86: Fix up typo in topology detection (2014-12-10 11:35:05 -0800)
>
> are available in the git repository at:
>
>   git://kernel.ubuntu.com/cmagina/utopic-xgene.git lp1400349
>
> for you to fetch changes up to 15b90f5363eeb088d014b59155f848bfcdc4dc1f:
>
>   arm64: optimized copy_to_user and copy_from_user assembly code
> (2014-12-10 14:55:10 -0500)
>
> ----------------------------------------------------------------
> Feng Kan (1):
>       arm64: optimized copy_to_user and copy_from_user assembly code
>
>  arch/arm64/lib/copy_from_user.S |  87 ++++++++++++++++----------
>  arch/arm64/lib/copy_template.S  | 212
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>  arch/arm64/lib/copy_to_user.S   |  57 +++++++++--------
>  3 files changed, 297 insertions(+), 59 deletions(-)
>  create mode 100644 arch/arm64/lib/copy_template.S
>
>
> Vivid
>
> The following changes since commit
> cf7e9f183f6f7e96cc0eb4ee9ddcd2f525613190:
>
>   UBUNTU: [Config] CONFIG_FW_LOADER_USER_HELPER_FALLBACK=n (2014-12-10
> 11:50:01 -0800)
>
> are available in the git repository at:
>
>   git://kernel.ubuntu.com/cmagina/vivid-xgene.git lp1400349
>
> for you to fetch changes up to db1847d8c6eba863a38ef9027efce52801f5f456:
>
>   arm64: optimized copy_to_user and copy_from_user assembly code
> (2014-12-10 15:11:49 -0500)
>
> ----------------------------------------------------------------
> Feng Kan (1):
>       arm64: optimized copy_to_user and copy_from_user assembly code
>
>  arch/arm64/lib/copy_from_user.S |  87 ++++++++++++++++----------
>  arch/arm64/lib/copy_template.S  | 212
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>  arch/arm64/lib/copy_to_user.S   |  57 +++++++++--------
>  3 files changed, 297 insertions(+), 59 deletions(-)
>  create mode 100644 arch/arm64/lib/copy_template.S
>
> Thanks,
> --
> Craig Magina
>
> --
> kernel-team mailing list
> kernel-team at lists.ubuntu.com
> https://lists.ubuntu.com/mailman/listinfo/kernel-team
>
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