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Re: [Xen-devel] Re: [PATCH] AMD OSVW (OS Visible Workaround) for Xen

To: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Subject: Re: [Xen-devel] Re: [PATCH] AMD OSVW (OS Visible Workaround) for Xen
From: Wei Huang <wei.huang2@xxxxxxx>
Date: Fri, 2 Jul 2010 13:57:50 -0500
Cc: "Rosenfeld, Hans" <Hans.Rosenfeld@xxxxxxx>, "'xen-devel@xxxxxxxxxxxxxxxxxxx'" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Jan Beulich <JBeulich@xxxxxxxxxx>
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Thanks very much. I don't think 4.0.1 needs this patch.

-Wei

Keir Fraser wrote:
On 01/07/2010 20:17, "Wei Huang" <wei.huang2@xxxxxxx> wrote:

This path enables AMD OSVW (OS Visible Workaround) feature for Xen. New
AMD errata will have a OSVW id assigned in the future. OS is supposed to
check OSVW status MSR to find out whether CPU has a specific erratum.
Legacy errata are also supported in this patch: traditional
family/model/stepping approach will be used if OSVW feature isn't
applicable.  This patch is adapted from Hans Rosenfeld's patch submitted
to Linux kernel .

Applied to xen-unstable. Is this for 4.0.1 also? It is a big patch and it
doesn't say it actually fixes any issues...

 -- Keir

Signed-off-by: Wei Huang <wei.huang2@xxxxxxx>
Signed-off-by: Hans Rosenfeld <hands.rosenfeld@xxxxxxx>
Acked-by: Jan Beulich <jbeulich@xxxxxxxxxx>




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