Re: [PATCH v2 3/3] KVM: vmx: handle vm-exit for UMWAIT and TPAUSE
From: Paolo Bonzini <pbonzini@redhat.com>
Date: 2019-05-29 01:28:24
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On 24/05/19 09:56, Tao Xu wrote:
As the latest Intel 64 and IA-32 Architectures Software Developer's Manual, UMWAIT and TPAUSE instructions cause a VM exit if the “RDTSC exiting” and “enable user wait and pause” VM-execution controls are both 1. This patch is to handle the vm-exit for UMWAIT and TPAUSE as invalid_op.
KVM never enables RDTSC exiting, so this is not necessary. Paolo