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SubjectRe: [RFT PATCH v2 1/4] arm64: fix possible invalid FPSIMD initialization state
On Sun, Oct 13, 2013 at 03:20:17PM +0100, Jiang Liu wrote:
> From: Jiang Liu <jiang.liu@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@huawei.com>
> Cc: Jiang Liu <liuj97@gmail.com>

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

--
Catalin


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