Commit 67198ac3 authored Sep 01, 2016 by Paolo Bonzini

KVM: x86: initialize kvmclock_offset



Make the guest's kvmclock count up from zero, not from the host boot
time.  The guest cannot rely on that anyway because it changes on
migration, the numbers are easier on the eye and finally it matches the
desired semantics of the Hyper-V time reference counter.

Reviewed-by: Roman Kagan <rkagan@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

parent 0d6dd2ff

arch/x86/kvm/x86.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -7779,6 +7779,7 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
		mutex_init(&kvm->arch.apic_map_lock);
		spin_lock_init(&kvm->arch.pvclock_gtod_sync_lock);

		kvm->arch.kvmclock_offset = -get_kernel_ns();
		pvclock_update_vm_gtod_copy(kvm);

		INIT_DELAYED_WORK(&kvm->arch.kvmclock_update_work, kvmclock_update_fn);