From: Dave Martin <Dave.Martin@arm.com>
To: "Yandong.Zhao" <yandong77520@gmail.com>
Cc: linux-arm-kernel@lists.infradead.org, catalin.marinas@arm.com,
will.deacon@arm.com, ard.biesheuvel@linaro.org,
linux-kernel@vger.kernel.org, zhaoyd@thundersoft.com
Subject: Re: [PATCH] arm64: neon: Add preemption protection for kernel_neon_busy
Date: Mon, 9 Jul 2018 11:40:41 +0100 [thread overview]
Message-ID: <20180709104041.GC9486@e103592.cambridge.arm.com> (raw)
In-Reply-To: <1531125935-19999-1-git-send-email-yandong77520@gmail.com>
On Mon, Jul 09, 2018 at 04:45:35PM +0800, Yandong.Zhao wrote:
> From: Yandong Zhao <yandong77520@gmail.com>
>
> may_use_simd() can be called in any case and access kernel_neon_busy,
> for example: BUG_ON(!may_use_simd()). This patch ensures that
> migration will not occur during program access to kernel_neon_busy.
>
> Signed-off-by: Yandong Zhao <yandong77520@gmail.com>
(Duplicate patch, see [1] for discussion.)
[...]
Cheers
---Dave
[1] [PATCH] arm64: neon: Do not access kernel_neon_busy with preemption enabled http://lists.infradead.org/pipermail/linux-arm-kernel/2018-July/589259.html
next prev parent reply other threads:[~2018-07-09 10:40 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-09 8:45 Yandong.Zhao
2018-07-09 10:40 ` Dave Martin [this message]
2018-07-09 12:19 Yandong.Zhao
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