tree ac96b682183194f70e10be5dd85d34cef205e7ba
parent ac72a9b733995cb3ef538000f6309b5e724aa469
author Joerg Roedel <joerg.roedel@amd.com> 1267454077 +0100
committer Avi Kivity <avi@redhat.com> 1274087712 +0300

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>