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authorAlexander Graf <agraf@suse.de>2010-01-15 14:49:13 +0100
committerMarcelo Tosatti <mtosatti@redhat.com>2010-03-01 12:35:56 -0300
commitf7adbba1e5d464b0d449adac1eb2519be6be9728 (patch)
tree5a7580ac34b8abfb976525b9802d860e01cc3581 /arch/powerpc/include/asm
parent1c0006d8d131585095c4a27dbfcfb3970807a35e (diff)
KVM: PPC: Keep SRR1 flags around in shadow_msr
SRR1 stores more information that just the MSR value. It also stores valuable information about the type of interrupt we received, for example whether the storage interrupt we just got was because of a missing htab entry or not. We use that information to speed up the exit path. Now if we get preempted before we can interpret the shadow_msr values, we get into vcpu_put which then calls the MSR handler, which then sets all the SRR1 information bits in shadow_msr to 0. Great. So let's preserve the SRR1 specific bits in shadow_msr whenever we set the MSR. They don't hurt. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/powerpc/include/asm')
-rw-r--r--arch/powerpc/include/asm/kvm_host.h1
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 c30a70c6b93..715aa6baf6f 100644
--- a/arch/powerpc/include/asm/kvm_host.h
+++ b/arch/powerpc/include/asm/kvm_host.h
@@ -198,6 +198,7 @@ struct kvm_vcpu_arch {
ulong msr;
#ifdef CONFIG_PPC64
ulong shadow_msr;
+ ulong shadow_srr1;
ulong hflags;
ulong guest_owned_ext;
#endif