From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andrew Cooper <andrew.cooper3@citrix.com>
Subject: Request to backport 23511:450f1d198e1e to testing
	branches.
Date: Wed, 9 Nov 2011 10:30:05 +0000
Message-ID: <4EBA562D.8010808@citrix.com>
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To: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>, Keir Fraser <keir.xen@gmail.com>
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c/s 23511:450f1d198e1e prevents cache flushing on AMD Valencia CPUs.

The result of not having this changeset, which we see on our new
hardware, is that HVM operations proceed at a glacial pace. (1 minute
for HVM bios to start, 3 minutes between booting memtest and it actually
starting to test memory.  Attempting to install windows gets very boring
very quickly.)

The patch applies cleanly to xen-4.1-testing.

-- 
Andrew Cooper - Dom0 Kernel Engineer, Citrix XenServer
T: +44 (0)1223 225 900, http://www.citrix.com