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| author |   Wanpeng Li <wanpengli@tencent.com> | 2018-03-12 04:53:02 -0700 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2018-03-16 22:03:51 +0100 |
| commit | 4d5422cea3b61f158d58924cbb43feada456ba5c (patch) | |
| tree | 0657ac655c54892dd6498d8e20b89380255d592a /kernel | |
| parent | Merge tag 'kvm-s390-next-4.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD (diff) | |
| download | linux-dev-4d5422cea3b61f158d58924cbb43feada456ba5c.tar.xz linux-dev-4d5422cea3b61f158d58924cbb43feada456ba5c.zip | |
KVM: X86: Provide a capability to disable MWAIT intercepts
Allowing a guest to execute MWAIT without interception enables a guest
to put a (physical) CPU into a power saving state, where it takes
longer to return from than what may be desired by the host.
Don't give a guest that power over a host by default. (Especially,
since nothing prevents a guest from using MWAIT even when it is not
advertised via CPUID.)
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Jan H. Schönherr <jschoenh@amazon.de>
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions