From 43bb9e000ea4c62154c01844771fea25b8b83520 Mon Sep 17 00:00:00 2001 From: Sean Christopherson Date: Mon, 11 Jul 2022 22:57:53 +0000 Subject: KVM: x86: Tweak name of MONITOR/MWAIT #UD quirk to make it #UD specific Add a "UD" clause to KVM_X86_QUIRK_MWAIT_NEVER_FAULTS to make it clear that the quirk only controls the #UD behavior of MONITOR/MWAIT. KVM doesn't currently enforce fault checks when MONITOR/MWAIT are supported, but that could change in the future. SVM also has a virtualization hole in that it checks all faults before intercepts, and so "never faults" is already a lie when running on SVM. Fixes: bfbcc81bb82c ("KVM: x86: Add a quirk for KVM's "MONITOR/MWAIT are NOPs!" behavior") Signed-off-by: Sean Christopherson Link: https://lore.kernel.org/r/20220711225753.1073989-4-seanjc@google.com --- Documentation/virt/kvm/api.rst | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'Documentation/virt') diff --git a/Documentation/virt/kvm/api.rst b/Documentation/virt/kvm/api.rst index bafaeedd455c..cd9361f22530 100644 --- a/Documentation/virt/kvm/api.rst +++ b/Documentation/virt/kvm/api.rst @@ -7523,7 +7523,7 @@ The valid bits in cap.args[0] are: incorrect hypercall instruction will generate a #UD within the guest. -KVM_X86_QUIRK_MWAIT_NEVER_FAULTS By default, KVM emulates MONITOR/MWAIT (if +KVM_X86_QUIRK_MWAIT_NEVER_UD_FAULTS By default, KVM emulates MONITOR/MWAIT (if they are intercepted) as NOPs regardless of whether or not MONITOR/MWAIT are supported according to guest CPUID. When this quirk -- cgit v1.2.3