KVM: nSVM: Advertise and enable NRIPS for L1 iff nrips is enabled

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Set NRIPS in KVM capabilities if and only if nrips=true, which naturally
incorporates the boot_cpu_has() check, and set nrips_enabled only if the
KVM capability is enabled.

Note, previously KVM would set nrips_enabled based purely on userspace
input, but at worst that would cause KVM to propagate garbage into L1,
i.e. userspace would simply be hosing its VM.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Sean Christopherson 2020-03-02 15:57:08 -08:00 • committed by Paolo Bonzini

parent a50718cc3f

commit 4eb87460c4

1 changed files with 3 additions and 2 deletions

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arch/x86/kvm/svm.c

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