KVM: SVM: Implement VIRT_SPEC_CTRL support for SSBD

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Expose the new virtualized architectural mechanism, VIRT_SSBD, for using
speculative store bypass disable (SSBD) under SVM.  This will allow guests
to use SSBD on hardware that uses non-architectural mechanisms for enabling
SSBD.

[ tglx: Folded the migration fixup from Paolo Bonzini ]

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

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Tom Lendacky 2018-05-10 22:06:39 +02:00 • committed by Thomas Gleixner

parent 47c61b3955

commit bc226f07dc

6 changed files with 50 additions and 18 deletions

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2

arch/x86/include/asm/kvm_host.h

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arch/x86/kernel/cpu/common.c

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11

arch/x86/kvm/cpuid.c

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arch/x86/kvm/svm.c

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arch/x86/kvm/vmx.c

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arch/x86/kvm/x86.c

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