linux-kernel - Re: [PATCH 01/16] x86, fpu: wrap get_xsave

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Message-ID: <5537B6AD.6070507@sr71.net>
Date:	Wed, 22 Apr 2015 07:56:45 -0700
From:	Dave Hansen <dave@...1.net>
To:	Borislav Petkov <bp@...en8.de>, Oleg Nesterov <oleg@...hat.com>
CC:	linux-kernel@...r.kernel.org, x86@...nel.org, tglx@...utronix.de,
	dave.hansen@...ux.intel.com, riel@...hat.com, sbsiddha@...il.com,
	luto@...capital.net, mingo@...hat.com, hpa@...or.com,
	fenghua.yu@...el.com
Subject: Re: [PATCH 01/16] x86, fpu: wrap get_xsave_addr() to make it safer

On 04/22/2015 06:31 AM, Borislav Petkov wrote:
> I read tsk_get_xsave_field(@tsk, ) as give me the xsave field of @tsk
> but doing used_math() we're querying current and I'm not sure
> 
> 	tsk == current
> 
> in all the call sites of tsk_get_xsave_field().

There aren't that many call sites. :)

But, yeah, tsk==current for all of them at the moment.
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