On 29/05/2019 09:29, Paolo Bonzini wrote:
On 24/05/19 09:56, Tao Xu wrote:
+
+ if (rdmsrl_safe(MSR_IA32_UMWAIT_CONTROL, &host_umwait_control))
+ return;
+
Does the host value ever change? If not, this can perhaps be read once
when kvm_intel is loaded. And if it changes often, it should be
shadowed into a percpu variable.
Paolo
Yes, the host value may change, we contact the host patch author Fenghua
to add the shadow in host when the host msr value change. And we will
improve this in the next version of patch.
