| Message ID | 148846756856.2349.18360437323368784256.stgit@brijesh-build-machine (mailing list archive) |
|---|---|
| State | New, archived |
| Delegated to: | Bjorn Helgaas |
| Headers | show |
On Thu, Mar 02, 2017 at 10:12:48AM -0500, Brijesh Singh wrote: > From: Tom Lendacky <thomas.lendacky@amd.com> > > Define a new KVM CPU feature for Secure Encrypted Virtualization (SEV). > The kernel will check for the presence of this feature to determine if > it is running with SEV active. > > Define the SEV enable bit for the VMCB control structure. The hypervisor > will use this bit to enable SEV in the guest. > > Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> > --- > arch/x86/include/asm/svm.h | 1 + > arch/x86/include/uapi/asm/kvm_para.h | 1 + > 2 files changed, 2 insertions(+) > > diff --git a/arch/x86/include/asm/svm.h b/arch/x86/include/asm/svm.h > index 2aca535..fba2a7b 100644 > --- a/arch/x86/include/asm/svm.h > +++ b/arch/x86/include/asm/svm.h > @@ -137,6 +137,7 @@ struct __attribute__ ((__packed__)) vmcb_control_area { > #define SVM_VM_CR_SVM_DIS_MASK 0x0010ULL > > #define SVM_NESTED_CTL_NP_ENABLE BIT(0) > +#define SVM_NESTED_CTL_SEV_ENABLE BIT(1) > > struct __attribute__ ((__packed__)) vmcb_seg { > u16 selector; > diff --git a/arch/x86/include/uapi/asm/kvm_para.h b/arch/x86/include/uapi/asm/kvm_para.h > index 1421a65..bc2802f 100644 > --- a/arch/x86/include/uapi/asm/kvm_para.h > +++ b/arch/x86/include/uapi/asm/kvm_para.h > @@ -24,6 +24,7 @@ > #define KVM_FEATURE_STEAL_TIME 5 > #define KVM_FEATURE_PV_EOI 6 > #define KVM_FEATURE_PV_UNHALT 7 > +#define KVM_FEATURE_SEV 8 This looks like it needs documenting in Documentation/virtual/kvm/cpuid.txt
diff --git a/arch/x86/include/asm/svm.h b/arch/x86/include/asm/svm.h index 2aca535..fba2a7b 100644 --- a/arch/x86/include/asm/svm.h +++ b/arch/x86/include/asm/svm.h @@ -137,6 +137,7 @@ struct __attribute__ ((__packed__)) vmcb_control_area { #define SVM_VM_CR_SVM_DIS_MASK 0x0010ULL #define SVM_NESTED_CTL_NP_ENABLE BIT(0) +#define SVM_NESTED_CTL_SEV_ENABLE BIT(1) struct __attribute__ ((__packed__)) vmcb_seg { u16 selector; diff --git a/arch/x86/include/uapi/asm/kvm_para.h b/arch/x86/include/uapi/asm/kvm_para.h index 1421a65..bc2802f 100644 --- a/arch/x86/include/uapi/asm/kvm_para.h +++ b/arch/x86/include/uapi/asm/kvm_para.h @@ -24,6 +24,7 @@ #define KVM_FEATURE_STEAL_TIME 5 #define KVM_FEATURE_PV_EOI 6 #define KVM_FEATURE_PV_UNHALT 7 +#define KVM_FEATURE_SEV 8 /* The last 8 bits are used to indicate how to interpret the flags field * in pvclock structure. If no bits are set, all flags are ignored.