Commit aab6d7ce authored Jan 15, 2014 by Paolo Bonzini

KVM: remove useless write to vcpu->hv_clock.tsc_timestamp



After the previous patch from Marcelo, the comment before this write
became obsolete.  In fact, the write is unnecessary.  The calls to
kvm_write_tsc ultimately result in a master clock update as soon as
all TSCs agree and the master clock is re-enabled.  This master
clock update will rewrite tsc_timestamp.

So, together with the comment, delete the dead write too.

Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

parent f25e656d

arch/x86/kvm/x86.c

+0 −2

Original line number	Diff line number	Diff line
		@@ -1278,8 +1278,6 @@ void kvm_write_tsc(struct kvm_vcpu vcpu, struct msr_data msr)
		kvm->arch.last_tsc_write = data;
		kvm->arch.last_tsc_khz = vcpu->arch.virtual_tsc_khz;

		/* Reset of TSC must disable overshoot protection below */
		vcpu->arch.hv_clock.tsc_timestamp = 0;
		vcpu->arch.last_guest_tsc = data;

		/* Keep track of which generation this VCPU has synchronized to */