tree 0b66f2eb287b5412ef7c3d8034a64d9182fb7999
parent 247f4993a5974e6759606c4d380748eecfd273ff
author Will Deacon <will.deacon@arm.com> 1327951409 +0100
committer Russell King <rmk+kernel@arm.linux.org.uk> 1328204262 +0000

ARM: 7308/1: vfp: flush thread hwstate before copying ptrace registers

If we are context switched whilst copying into a thread's
vfp_hard_struct then the partial copy may be corrupted by the VFP
context switching code (see "ARM: vfp: flush thread hwstate before
restoring context from sigframe").

This patch updates the ptrace VFP set code so that the thread state is
flushed before the copy, therefore disabling VFP and preventing
corruption from occurring.

Cc: stable <stable@vger.kernel.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>