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KVM: PPC: bookehv: add comment about shadow_msr
For BookE HV the guest visible MSR is shared->msr and is identical to the MSR that is in use while the guest is running, because we can't trap reads from/to MSR. So shadow_msr is unused there. Indicate that with a comment. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
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@ -386,6 +386,7 @@ struct kvm_vcpu_arch {
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#endif
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u32 vrsave; /* also USPRG0 */
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u32 mmucr;
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/* shadow_msr is unused for BookE HV */
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ulong shadow_msr;
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ulong csrr0;
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ulong csrr1;
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