From: "H. Peter Anvin" <hpa@zytor.com>
To: Avi Kivity <avi@redhat.com>
Cc: kvm@vger.kernel.org
Subject: Re: KVM crash on unusual PM->RM transition
Date: Tue, 14 Apr 2009 09:17:29 -0700 [thread overview]
Message-ID: <49E4B719.8050905@zytor.com> (raw)
In-Reply-To: <49E4B6E1.6020308@redhat.com>
Avi Kivity wrote:
>
> Sorry, not specific enough: it doesn't do real SMP. Atomic instructions
> are translated as multiple, non-atomic instructions, so you can't run
> tcg compiled code in parallel. If your host is different than your
> target, you have memory ordering issues as well.
>
> What qemu does is to multiplex multiple guest cpus on one host thread.
> It's nice but it isn't how kvm works.
>
Erk, nevermind.
-hpa
--
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel. I don't speak on their behalf.
prev parent reply other threads:[~2009-04-14 16:17 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-13 23:42 KVM crash on unusual PM->RM transition H. Peter Anvin
2009-04-14 5:42 ` H. Peter Anvin
2009-04-14 8:14 ` Avi Kivity
2009-04-14 15:48 ` H. Peter Anvin
2009-04-14 16:07 ` Avi Kivity
2009-04-14 16:10 ` H. Peter Anvin
2009-04-14 16:16 ` Avi Kivity
2009-04-14 16:17 ` H. Peter Anvin [this message]
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