tree f1f321963c620d26172f8fd0878374d9598c0ad0
parent f65c229c3e7743c6654c16b9ec6248466b5eef21
author Joerg Roedel <joerg.roedel@amd.com> 1202925527 +0100
committer Avi Kivity <avi@qumranet.com> 1209286401 +0300

KVM: SVM: enable LBR virtualization

This patch implements the Last Branch Record Virtualization (LBRV) feature of
the AMD Barcelona and Phenom processors into the kvm-amd module. It will only
be enabled if the guest enables last branch recording in the DEBUG_CTL MSR. So
there is no increased world switch overhead when the guest doesn't use these
MSRs.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Markus Rechberger <markus.rechberger@amd.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>