Patchwork [30/37] KVM: PPC: bookehv: add comment about shadow_msr

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Submitter Alexander Graf
Date Feb. 24, 2012, 2:26 p.m.
Message ID <1330093591-19523-31-git-send-email-agraf@suse.de>
Download mbox | patch
Permalink /patch/142862/
State New
Headers show

Comments

Alexander Graf - Feb. 24, 2012, 2:26 p.m.
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>
---
 arch/powerpc/include/asm/kvm_host.h |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

Patch

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;