x86/kvm/mmu: check if MMU reconfiguration is needed in init_kvm_nested_mmu()

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We don't use root page role for nested_mmu, however, optimizing out
re-initialization in case nothing changed is still valuable as this
is done for every nested vmentry.

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

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Vitaly Kuznetsov 2018-10-08 21:28:13 +02:00 • committed by Paolo Bonzini

parent 7dcd575520

commit bf627a9288

1 changed files with 6 additions and 0 deletions

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arch/x86/kvm/mmu.c

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