linux-kernel - Re: [PATCH] x86, nmi: workaround sti; hlt race vs nmi; intr

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Message-ID: <4CA20B21.7060809@zytor.com>
Date:	Tue, 28 Sep 2010 08:34:57 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Avi Kivity <avi@...hat.com>
CC:	Alexander Graf <agraf@...e.de>, x86@...nel.org,
	linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
	Joerg Roedel <joerg.roedel@....com>
Subject: Re: [PATCH] x86, nmi: workaround sti; hlt race vs nmi; intr

On 09/28/2010 01:50 AM, Avi Kivity wrote:
> 
> Personally I think the safer route is to take the patch.  There are
> other processors besides Intel and AMD and we can't test all of them,
> not to mention various emulators and virtual machine monitors out there.
> 

Speaking for the smoltering crater that used to be *Transmeta*, I'm
(from memory) quite certain they blocked NMI and that this was
intentional behavior.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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