From: Hollis Blanchard <hollisb@us.ibm.com>
Date: Fri, 25 Jul 2008 18:54:52 +0000 (-0500)
Subject: KVM: ppc: Write only modified shadow entries into the TLB on exit
X-Git-Tag: v2.6.28-rc1~269^2~106
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=83aae4a8098eb8a40a2e9dab3714354182143b4f;p=pandora-kernel.git

KVM: ppc: Write only modified shadow entries into the TLB on exit

Track which TLB entries need to be written, instead of overwriting everything
below the high water mark. Typically only a single guest TLB entry will be
modified in a single exit.

Guest boot time performance improvement: about 15%.

Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
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