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SubjectRe: [PATCH 2/3] KVM: X86: Allow userspace to disable ioport intercept
On Fri, May 11, 2018 at 11:42:46AM -0400, Konrad Rzeszutek Wilk wrote:
> On Mon, Apr 16, 2018 at 10:46:01PM -0700, Wanpeng Li wrote:
> > From: Wanpeng Li <wanpengli@tencent.com>
> >
> > Allow to disable ioport intercept by userspace.
> >
> > Cc: Paolo Bonzini <pbonzini@redhat.com>
> > Cc: Radim Krčmář <rkrcmar@redhat.com>
> > Cc: Tim Shearer <tshearer@advaoptical.com>
> > Cc: Liran Alon <liran.alon@oracle.com>
> > Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
> > ---
> > Documentation/virtual/kvm/api.txt | 11 +++++++++++
> > arch/x86/include/asm/kvm_host.h | 2 ++
> > arch/x86/kvm/x86.c | 5 +++++
> > include/uapi/linux/kvm.h | 1 +
> > 4 files changed, 19 insertions(+)
> >
> > diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt
> > index 1c7958b..3d0488e 100644
> > --- a/Documentation/virtual/kvm/api.txt
> > +++ b/Documentation/virtual/kvm/api.txt
> > @@ -4378,6 +4378,17 @@ all such vmexits.
> >
> > Do not enable KVM_FEATURE_PV_UNHALT if you disable HLT exits.
> >
> > +7.14 KVM_CAP_IOPORT_DISABLE_INTERCEPT
> > +
> > +Architectures: x86

And to be exact: Intel only..

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