Re: [PATCH v2 2/3] KVM: vmx: Emulate MSR IA32_UMWAIT_CONTROL
From: Paolo Bonzini <pbonzini@redhat.com>
Date: 2019-05-29 01:30:00
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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