linux-kernel - Re: [stable] patch kvm-svm-fix-tsc-offset-adjustment-when-running-nested.patch added to 2.6.31-stable tree

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Message-ID: <20091012145546.GB1517@kroah.com>
Date:	Mon, 12 Oct 2009 07:55:46 -0700
From:	Greg KH <greg@...ah.com>
To:	Joerg Roedel <joerg.roedel@....com>
Cc:	Stefan Lippers-Hollmann <s.L-H@....de>, stable@...nel.org,
	gregkh@...e.de, linux-kernel@...r.kernel.org, mtosatti@...hat.com
Subject: Re: [stable] patch
 kvm-svm-fix-tsc-offset-adjustment-when-running-nested.patch added to
 2.6.31-stable tree

On Mon, Oct 12, 2009 at 11:41:51AM +0200, Joerg Roedel wrote:
> All the nested stuff was moved into its own sub-struct in 2.6.32. Here
> is a version that works with 2.6.31.3:
> 
> >From 4505a73070f341674e0d22a8c9ee51b2beeb843e Mon Sep 17 00:00:00 2001
> From: Joerg Roedel <joerg.roedel@....com>
> Date: Mon, 12 Oct 2009 11:19:07 +0200
> Subject: [PATCH 1/2] KVM: SVM: Fix tsc offset adjustment when running nested
> 
> When svm_vcpu_load is called while the vcpu is running in
> guest mode the tsc adjustment made there is lost on the next
> emulated #vmexit. This causes the tsc running backwards in
> the guest. This patch fixes the issue by also adjusting the
> tsc_offset in the emulated hsave area so that it will not
> get lost.
> 
> Signed-off-by: Joerg Roedel <joerg.roedel@....com>

Thanks, but Marcelo just said we should drop the original patch.

Marcelo, if you want this one in instead, please let me know.

thanks,

greg k-h
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