diff options
| author | Jiang Liu <jiang.liu@huawei.com> | 2013-09-27 09:04:41 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2014-05-14 12:16:48 +0100 |
| commit | 47b1e20b206944ea097b775e0e4a569f8bdeeb7c (patch) | |
| tree | d578318f0ffaeaea06214bbf90d0aaffa231e802 /kernel/crash_dump.c | |
| parent | 6c0ab8b35469a97968c1482b14106afa8db3d743 (diff) | |
arm64: fix possible invalid FPSIMD initialization state
commit 6db83cea1c975b9a102e17def7d2795814e1ae2b upstream.
If context switching happens during executing fpsimd_flush_thread(),
stale value in FPSIMD registers will be saved into current thread's
fpsimd_state by fpsimd_thread_switch(). That may cause invalid
initialization state for the new process, so disable preemption
when executing fpsimd_flush_thread().
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Cc: Jiang Liu <liuj97@gmail.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit 2bf5861acf602fe6201ac1f82955ac7283e56b6f)
Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'kernel/crash_dump.c')
0 files changed, 0 insertions, 0 deletions