[RFT PATCH v2 1/4] arm64: fix possible invalid FPSIMD initialization state

[Catalin Marinas]

On Sun, Oct 13, 2013 at 03:20:17PM +0100, Jiang Liu wrote:
> From: Jiang Liu <jiang.liu at huawei.com>
> 
> 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 at huawei.com>
> Cc: Jiang Liu <liuj97 at gmail.com>

That's already in mainline (3.12-rc4).

-- 
Catalin