From mboxrd@z Thu Jan  1 00:00:00 1970
From: catalin.marinas@arm.com (Catalin Marinas)
Date: Mon, 14 Oct 2013 14:54:58 +0100
Subject: [RFT PATCH v2 1/4] arm64: fix possible invalid FPSIMD
 initialization state
In-Reply-To: <1381674029-430-1-git-send-email-liuj97@gmail.com>
References: <1381674029-430-1-git-send-email-liuj97@gmail.com>
Message-ID: <20131014135457.GE7682@arm.com>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

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