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@xxxxxxxxxxx> > > > > Allow to disable ioport intercept by userspace. > > > > Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx> > > Cc: Radim Krčmář <rkrcmar@xxxxxxxxxx> > > Cc: Tim Shearer <tshearer@xxxxxxxxxxxxxxx> > > Cc: Liran Alon <liran.alon@xxxxxxxxxx> > > Signed-off-by: Wanpeng Li <wanpengli@xxxxxxxxxxx> > > --- > > 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..