Il 22/05/2013 09:32, Vadim Rozenfeld ha scritto: >> > @@ -1827,6 +1829,29 @@ static int set_msr_hyperv_pw(struct kvm_vcpu *vcpu, u32 msr, u64 data) >> > if (__copy_to_user((void __user *)addr, instructions, 4)) >> > return 1; >> > kvm->arch.hv_hypercall = data; >> > + local_irq_disable(); >> > + kvm->arch.hv_ref_count = get_kernel_ns(); >> > + local_irq_enable(); >> > + break; > local_irq_disable/local_irq_enable not needed. > > > What is the reasoning behind reading this time value at msr write time? > [VR] Windows writs this MSR only once, during HAL initialization. > So, I decided to treat this call as a partition crate event. > But is it expected by Windows that the reference count starts counting up from 0 at partition creation time? If you could just use (get_kernel_ns() + kvm->arch.kvmclock_offset) / 100, it would also be simpler for migration purposes. Paolo -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
