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9e90199c25
KVM will use it to switch pkru between guest and host. CC: Ingo Molnar <mingo@redhat.com> CC: Dave Hansen <dave.hansen@linux.intel.com> Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> Signed-off-by: Huaitong Han <huaitong.han@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>