linux-kernel - Re: Oops with tip/x86/fpu

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Message-ID: <54F75900.8070906@intel.com>
Date:	Wed, 04 Mar 2015 11:12:00 -0800
From:	Dave Hansen <dave.hansen@...el.com>
To:	Oleg Nesterov <oleg@...hat.com>,
	Quentin Casasnovas <quentin.casasnovas@...cle.com>
CC:	Andy Lutomirski <luto@...capital.net>,
	Borislav Petkov <bp@...e.de>, Ingo Molnar <mingo@...nel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Pekka Riikonen <priikone@....fi>,
	Rik van Riel <riel@...hat.com>,
	Suresh Siddha <sbsiddha@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	"Yu, Fenghua" <fenghua.yu@...el.com>
Subject: Re: Oops with tip/x86/fpu

On 03/04/2015 11:06 AM, Oleg Nesterov wrote:
> On 03/04, Dave Hansen wrote:
>> > I'm running a commit from the tip/x86/fpu branch: ae486033b98.  It's on
>> > a system which I normally boot with 'noxsaves'.  When I boot without
>> > 'noxsaves' it is getting a GPF around the time that init is forked off.
> And I assume that (before this commit) the kernel runs fine if you boot
> without 'noxsaves'?

Before this commit without 'noxsaves': GOOD
Before this commit with 'noxsaves': GOOD
After  this commit with 'noxsaves': GOOD
After  this commit without 'noxsaves': BAD


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