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authorJoerg Roedel <joerg.roedel@amd.com>2010-03-01 15:34:37 +0100
committerAvi Kivity <avi@redhat.com>2010-05-17 12:15:12 +0300
commit323c3d809b8bd42d6d557c734d4bdfdefa110445 (patch)
treeac96b682183194f70e10be5dd85d34cef205e7ba /tools/perf/scripts/python
parentac72a9b733995cb3ef538000f6309b5e724aa469 (diff)
KVM: SVM: Optimize nested svm msrpm merging
This patch optimizes the way the msrpm of the host and the guest are merged. The old code merged the 2 msrpm pages completly. This code needed to touch 24kb of memory for that operation. The optimized variant this patch introduces merges only the parts where the host msrpm may contain zero bits. This reduces the amount of memory which is touched to 48 bytes. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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