linux-kernel - Re: [PATCH] mm/x86: Patch out arch_flush_lazy_mmu

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Message-ID: <20130301121444.GC31649@hansolo.jdub.homelinux.org>
Date:	Fri, 1 Mar 2013 07:14:44 -0500
From:	Josh Boyer <jwboyer@...hat.com>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Borislav Petkov <bp@...en8.de>,
	Boris Ostrovsky <boris.ostrovsky@...cle.com>, mingo@...hat.com,
	tglx@...utronix.de, konrad.wilk@...cle.com, rostedt@...dmis.org,
	gregkh@...uxfoundation.org, samu.kallio@...rdeencloud.com,
	kraman@...hat.com, xen-devel@...ts.xen.org,
	linux-kernel@...r.kernel.org, stable@...nel.org
Subject: Re: [PATCH] mm/x86: Patch out arch_flush_lazy_mmu_mode() when
 running on bare metal

On Thu, Feb 28, 2013 at 04:52:20PM -0800, H. Peter Anvin wrote:
> On 02/28/2013 04:42 PM, Josh Boyer wrote:
> > On Fri, Mar 01, 2013 at 01:36:29AM +0100, Borislav Petkov wrote:
> >> On Thu, Feb 28, 2013 at 04:15:45PM -0800, H. Peter Anvin wrote:
> >>>> I'll try to get someone to test this tomorrow.
> >>
> >> Btw, you'd need to apply that other patch too
> >>
> >> http://marc.info/?l=xen-devel&m=136206183814547&w=2
> >>
> >> so that arch_flush_lazy_mmu_mode() has at least one caller on x86_64.
> > 
> > Yeah, we already have that applied.  It stops crashes in xen
> > environments so we pulled it in as a bugfix.  Thanks though!
> > 
> 
> Who are "we"?

Sorry, Fedora.  That patch has a link to a bug in it.  We applied the
patch for that bug.  I'll apply Boris' patch on top and get the same
people to test it.

josh
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