linux-kernel - Re: [PATCH] KVM: SVM: Adjust tsc_offset only if tsc

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Message-ID: <4B2704B2.10709@redhat.com>
Date:	Mon, 14 Dec 2009 17:38:26 -1000
From:	Zachary Amsden <zamsden@...hat.com>
To:	Joerg Roedel <joerg.roedel@....com>
CC:	Avi Kivity <avi@...hat.com>, Marcelo Tosatti <mtosatti@...hat.com>,
	kvm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] KVM: SVM: Adjust tsc_offset only if tsc_unstable

On 12/14/2009 01:22 AM, Joerg Roedel wrote:
> The tsc_offset adjustment in svm_vcpu_load is executed
> unconditionally even if Linux considers the host tsc as
> stable. This causes a Linux guest detecting an unstable tsc
> in any case.
> This patch removes the tsc_offset adjustment if the host tsc
> is stable. The guest will now get the benefit of a stable
> tsc too.
>
>    
Hi Joerg, I have a much more comprehensive series of patches to address 
this issue, please take a look.

Thanks,

Zach
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