mirror of
https://github.com/torvalds/linux.git
synced 2024-11-07 12:41:55 +00:00
KVM: SVM: Fix tsc offset adjustment when running nested
When svm_vcpu_load is called while the vcpu is running in guest mode the tsc adjustment made there is lost on the next emulated #vmexit. This causes the tsc running backwards in the guest. This patch fixes the issue by also adjusting the tsc_offset in the emulated hsave area so that it will not get lost. Cc: stable@kernel.org Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
This commit is contained in:
parent
8a0382f6fc
commit
77b1ab1732
@ -767,6 +767,8 @@ static void svm_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
|
||||
rdtscll(tsc_this);
|
||||
delta = vcpu->arch.host_tsc - tsc_this;
|
||||
svm->vmcb->control.tsc_offset += delta;
|
||||
if (is_nested(svm))
|
||||
svm->nested.hsave->control.tsc_offset += delta;
|
||||
vcpu->cpu = cpu;
|
||||
kvm_migrate_timers(vcpu);
|
||||
svm->asid_generation = 0;
|
||||
|
Loading…
Reference in New Issue
Block a user