SRU LP 1398596 [Revert] arm64: optimized copy_to_user and copy_from_user assembly code

Craig Magina craig.magina at canonical.com
Wed Dec 3 19:33:41 UTC 2014


This reverts commit d7d4ccba121e82e702e187d507bc3534e1c51c6a.

A kernel crash was root caused to the copy_to_user arm64 optimizations
and upstream has requested the patch be reverted from the Ubuntu
kernel. [1]

BugLink: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1398596

[1] http://www.spinics.net/lists/arm-kernel/msg381811.html

The following changes since commit f37b1e1d9898e7c9ce80ed2a73c7beca3ca5040f:

  UBUNTU: Ubuntu-3.13.0-41.70 (2014-11-25 12:08:32 +0000)

are available in the git repository at:

  git://kernel.ubuntu.com/cmagina/trusty-xgene.git lp1398596

for you to fetch changes up to a51ae3b13b6dddc612431a912a77a6336d568039:

  Revert "UBUNTU: SAUCE: (no-up) arm64: optimized copy_to_user and
copy_from_user assembly code" (2014-12-03 14:28:26 -0500)

Thanks,
-- 
Craig Magina
Hyperscale Team
Canonical




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