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| author | Sean Christopherson <seanjc@google.com> | 2022-07-11 22:57:53 +0000 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2022-07-13 18:14:05 -0700 |
| commit | 43bb9e000ea4c62154c01844771fea25b8b83520 (patch) | |
| tree | fd47e7a827c627d90d41850964b2708a2554ca9d /Documentation/virt | |
| parent | 14fd95bf145ddb8201406b89c83faf24e7e3d52f (diff) | |
| download | linux-43bb9e000ea4c62154c01844771fea25b8b83520.tar.gz | |
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 <seanjc@google.com>
Link: https://lore.kernel.org/r/20220711225753.1073989-4-seanjc@google.com
Diffstat (limited to 'Documentation/virt')
| -rw-r--r-- | Documentation/virt/kvm/api.rst | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/Documentation/virt/kvm/api.rst b/Documentation/virt/kvm/api.rst index bafaeedd455c3..cd9361f225302 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 |