kvm: svm: Ensure an IBPB on all affected CPUs when freeing a vmcb

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Previously, we only called indirect_branch_prediction_barrier on the
logical CPU that freed a vmcb. This function should be called on all
logical CPUs that last loaded the vmcb in question.

Fixes: 15d4507152 ("KVM/x86: Add IBPB support")
Reported-by: Neel Natu <neelnatu@google.com>
Signed-off-by: Jim Mattson <jmattson@google.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Jim Mattson 2018-05-22 09:54:20 -07:00 • committed by Paolo Bonzini

parent 0e0fee5c53

commit fd65d3142f

1 changed files with 15 additions and 5 deletions

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arch/x86/kvm/svm.c

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