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 <ag...@suse.de>
---
 arch/powerpc/include/asm/kvm_host.h |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/arch/powerpc/include/asm/kvm_host.h 
b/arch/powerpc/include/asm/kvm_host.h
index ed95f53..633d68f 100644
--- a/arch/powerpc/include/asm/kvm_host.h
+++ b/arch/powerpc/include/asm/kvm_host.h
@@ -386,6 +386,7 @@ struct kvm_vcpu_arch {
 #endif
        u32 vrsave; /* also USPRG0 */
        u32 mmucr;
+       /* shadow_msr is unused for BookE HV */
        ulong shadow_msr;
        ulong csrr0;
        ulong csrr1;
-- 
1.6.0.2

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