On Mon, 13 Mar 2017 09:44:56 +0100 David Hildenbrand <david@xxxxxxxxxx> wrote: > Am 10.03.2017 um 17:44 schrieb Luiz Capitulino: > > > > Signed-off-by: Luiz Capitulino <lcapitulino@xxxxxxxxxx> > > --- > > > > o v2 > > > > - Rebase against latest queue branch > > - Several text fixups [Paolo] > > > > Documentation/virtual/kvm/api.txt | 63 +++++++++++++++++++++++++++++++++++++++ > > 1 file changed, 63 insertions(+) > > > > diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt > > index 0694509..9dff056 100644 > > --- a/Documentation/virtual/kvm/api.txt > > +++ b/Documentation/virtual/kvm/api.txt > > @@ -3373,6 +3373,69 @@ struct kvm_ppc_resize_hpt { > > __u32 pad; > > }; > > > > +4.104 KVM_X86_GET_MCE_CAP_SUPPORTED > > + > > +Capability: KVM_CAP_MCE > > +Architectures: x86 > > +Type: system ioctl > > +Parameters: u64 mce_cap (in/out) > > Shouldn't this be (out) only? Correct. Fixed. > > +Returns: 0 on success, -1 on error > > + > > +Returns supported MCE capabilities. The u64 mce_cap parameter > > +has the same format as the MSR_IA32_MCG_CAP register. Supported > > +capabilities will have the corresponding bits set. > > + > > +4.105 KVM_X86_SETUP_MCE > > + > > +Capability: KVM_CAP_MCE > > +Architectures: x86 > > +Type: vcpu ioctl > > +Parameters: u64 mcg_cap (in) > > +Returns: 0 on success, > > + -EFAULT if u64 mcg_cap cannot be read, > > + -EINVAL if the requested number of banks is invalid, > > + -EINVAL if requested MCE capability is not supported. > > + > > +Initializes MCE support for use. The u64 mcg_cap parameter > > +has the same format as the MSR_IA32_MCG_CAP register and > > +specifies which capabilities should be enabled. The maximum > > +supported number of error-reporting banks can be retrieved when > > +checking for KVM_CAP_MCE. The supported capabilities can be > > +retrieved with KVM_X86_GET_MCE_CAP_SUPPORTED. > > + > > +4.106 KVM_X86_SET_MCE > > + > > +Capability: KVM_CAP_MCE > > +Architectures: x86 > > +Type: vcpu ioctl > > +Parameters: struct kvm_x86_mce (in) > > +Returns: 0 on success, > > + -EFAULT if struct kvm_x86_mce cannot be read, > > + -EINVAL if the bank number is invalid, > > + -EINVAL if VAL bit is not set in status field. > > + > > +Inject a machine check error (MCE) into the guest. The input > > +parameter is: > > + > > +struct kvm_x86_mce { > > + __u64 status; > > + __u64 addr; > > + __u64 misc; > > + __u64 mcg_status; > > + __u8 bank; > > + __u8 pad1[7]; > > + __u64 pad2[3]; > > +}; > > + > > +If the MCE being reported is an uncorrected error, KVM will > > +inject it as an MCE exception into the guest. If the guest > > s/an MCE/a MCE/ ? (not a native speaker) I'm not completely sure, but Intel's manual agrees with me so I'm keeping it. > > +MCG_STATUS register reports that an MCE is in progress, KVM > > +causes an KVM_EXIT_SHUTDOWN vmexit. > > + > > +Otherwise, if the MCE is an corrected error, KVM will just > > s/an corrected/a corrected/ ? (not a native speaker) You seem right about this one, so I've fixed it. I'm not including your reviewed-by because I didn't apply all the changes you requested. > > > +store it in the corresponding bank (provided this bank is > > +not holding a previously reported uncorrected error). > > + > > 5. The kvm_run structure > > ------------------------ > > > > > > Feel free to add > > Reviewed-by: David Hildenbrand <david@xxxxxxxxxx> >