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SubjectRe: [RFT PATCH v2 1/4] arm64: fix possible invalid FPSIMD initialization state
On 10/14/2013 09:54 PM, Catalin Marinas wrote:
> 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).
>

Hi Catalin,
I haven't noticed that yet, sorry for the noise:)
Thanks!
Gerry


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