KVM: SVM: Implement hsave

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Implement the hsave MSR, that gives the VCPU a GPA to save the
old guest state in.

v2 allows userspace to save/restore hsave
v4 dummys out the hsave MSR, so we use a host page
v6 remembers the guest's hsave and exports the MSR

Acked-by: Joerg Roedel <joro@8bytes.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>

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Alexander Graf 2008-11-25 20:17:05 +01:00 • committed by Avi Kivity

parent 1371d90460

commit b286d5d8b0

3 changed files with 16 additions and 1 deletions

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arch/x86/kvm/kvm_svm.h

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13

arch/x86/kvm/svm.c

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2

arch/x86/kvm/x86.c

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