Commit 80fef315 authored Nov 22, 2017 by Yang Zhong Committed by Paolo Bonzini Dec 14, 2017

KVM: Expose new cpu features to guest

Intel IceLake cpu has added new cpu features,AVX512_VBMI2/GFNI/
VAES/VPCLMULQDQ/AVX512_VNNI/AVX512_BITALG. Those new cpu features
need expose to guest VM.

The bit definition:
CPUID.(EAX=7,ECX=0):ECX[bit 06] AVX512_VBMI2
CPUID.(EAX=7,ECX=0):ECX[bit 08] GFNI
CPUID.(EAX=7,ECX=0):ECX[bit 09] VAES
CPUID.(EAX=7,ECX=0):ECX[bit 10] VPCLMULQDQ
CPUID.(EAX=7,ECX=0):ECX[bit 11] AVX512_VNNI
CPUID.(EAX=7,ECX=0):ECX[bit 12] AVX512_BITALG

The release document ref below link:
https://software.intel.com/sites/default/files/managed/c5/15/\


architecture-instruction-set-extensions-programming-reference.pdf

The kernel dependency commit in kvm.git:
(c128dbfa)

Signed-off-by: Yang Zhong <yang.zhong@intel.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>

parent 78588335

arch/x86/kvm/cpuid.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -394,7 +394,8 @@ static inline int __do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function,
		/* cpuid 7.0.ecx*/
		const u32 kvm_cpuid_7_0_ecx_x86_features =
		F(AVX512VBMI) \| F(LA57) \| F(PKU) \| 0 /OSPKE/ \|
		F(AVX512_VPOPCNTDQ) \| F(UMIP);
		F(AVX512_VPOPCNTDQ) \| F(UMIP) \| F(AVX512_VBMI2) \| F(GFNI) \|
		F(VAES) \| F(VPCLMULQDQ) \| F(AVX512_VNNI) \| F(AVX512_BITALG);

		/* cpuid 7.0.edx*/
		const u32 kvm_cpuid_7_0_edx_x86_features =

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