linux-kernel - Re: [PATCH 1/2] MIPS: Disable preemption during prctl(PR_SET_FP

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Message-ID: <alpine.DEB.2.00.1604221659110.21846@tp.orcam.me.uk>
Date:	Fri, 22 Apr 2016 17:00:03 +0100
From:	"Maciej W. Rozycki" <macro@...tec.com>
To:	Paul Burton <paul.burton@...tec.com>
CC:	<linux-mips@...ux-mips.org>, Ralf Baechle <ralf@...ux-mips.org>,
	"stable # v4 . 0+" <stable@...r.kernel.org>,
	Adam Buchbinder <adam.buchbinder@...il.com>,
	<linux-kernel@...r.kernel.org>,
	James Hogan <james.hogan@...tec.com>
Subject: Re: [PATCH 1/2] MIPS: Disable preemption during prctl(PR_SET_FP_MODE,
 ...)

On Thu, 21 Apr 2016, Paul Burton wrote:

> Whilst a PR_SET_FP_MODE prctl is performed there are decisions made
> based upon whether the task is executing on the current CPU. This may
> change if we're preempted, so disable preemption to avoid such changes
> for the lifetime of the mode switch.

Reviewed-by: Maciej W. Rozycki <macro@...tec.com>

 Thanks!

  Maciej