From: Avi Kivity <avi@redhat.com>
To: Alexander Graf <agraf@suse.de>
Cc: x86@kernel.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Subject: Re: [PATCH] x86, nmi: workaround sti; hlt race vs nmi; intr
Date: Mon, 27 Sep 2010 11:17:59 +0200 [thread overview]
Message-ID: <4CA06147.7080805@redhat.com> (raw)
In-Reply-To: <61284934-1AD3-4F7A-9488-D46FCEE9B753@suse.de>
On 09/27/2010 11:15 AM, Alexander Graf wrote:
> >
> > Wow, this is incredibly ugly :). Can't we just mask NMIs when the interrupt shadow is active?
I plan to do that, for all the code that's out there relying on on STI
interrupt shadow masking NMIs.
> Yeah, that's me writing without thinking. So this means that the race can also happen on real hardware?
>
Yes. At least on documented hardware. Some (most? all?) hardware does
mask NMIs after STI.
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2010-09-27 9:18 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-19 16:28 [PATCH] x86, nmi: workaround sti; hlt race vs nmi; intr Avi Kivity
2010-09-27 8:38 ` Avi Kivity
2010-09-27 9:13 ` Alexander Graf
2010-09-27 9:15 ` Alexander Graf
2010-09-27 9:17 ` Avi Kivity [this message]
2010-09-27 9:22 ` Alexander Graf
2010-09-27 9:27 ` Avi Kivity
2010-09-27 9:36 ` Alexander Graf
2010-09-27 21:55 ` H. Peter Anvin
2010-09-28 8:50 ` Avi Kivity
2010-09-28 9:22 ` Roedel, Joerg
2010-09-28 15:34 ` H. Peter Anvin
2010-09-28 16:30 ` Avi Kivity
2010-09-27 10:31 ` Joerg Roedel
2010-09-27 14:17 ` Avi Kivity
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