KVM/VMX: Expose SSBD properly to guests

The X86_FEATURE_SSBD is an synthetic CPU feature - that is
it bit location has no relevance to the real CPUID 0x7.EBX[31]
bit position. For that we need the new CPU feature name.

Fixes: 52817587e706 ("x86/cpufeatures: Disentangle SSBD enumeration")
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: kvm@vger.kernel.org
Cc: "Radim Krčmář" <rkrcmar@redhat.com>
Cc: stable@vger.kernel.org
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Link: https://lkml.kernel.org/r/20180521215449.26423-2-konrad.wilk@oracle.com

authored by Konrad Rzeszutek Wilk and committed by Thomas Gleixner 0aa48468 3b78ce4a

Changed files
+2 -2
arch
x86
kvm
+2 -2
arch/x86/kvm/cpuid.c
··· 407 407 408 408 /* cpuid 7.0.edx*/ 409 409 const u32 kvm_cpuid_7_0_edx_x86_features = 410 - F(AVX512_4VNNIW) | F(AVX512_4FMAPS) | F(SPEC_CTRL) | F(SSBD) | 411 - F(ARCH_CAPABILITIES); 410 + F(AVX512_4VNNIW) | F(AVX512_4FMAPS) | F(SPEC_CTRL) | 411 + F(SPEC_CTRL_SSBD) | F(ARCH_CAPABILITIES); 412 412 413 413 /* all calls to cpuid_count() should be made on the same cpu */ 414 414 get_cpu();