KVM: PPC: Ensure split mode works

On PowerPC we can go into MMU Split Mode. That means that either
data relocation is on but instruction relocation is off or vice
versa.

That mode didn't work properly, as we weren't always flushing
entries when going into a new split mode, potentially mapping
different code or data that we're supposed to.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 5 insertions, 4 deletions

diff --git a/arch/powerpc/include/asm/kvm_book3s.h b/arch/powerpc/include/asm/kvm_book3s.h
index e6ea974df44e..14d0262ae00b 100644
--- a/arch/powerpc/include/asm/kvm_book3s.h
+++ b/arch/powerpc/include/asm/kvm_book3s.h
@@ -99,10 +99,11 @@ struct kvmppc_vcpu_book3s {
 #define CONTEXT_GUEST           1
 #define CONTEXT_GUEST_END       2
 
-#define VSID_REAL       0xfffffffffff00000
-#define VSID_REAL_DR    0xffffffffffe00000
-#define VSID_REAL_IR    0xffffffffffd00000
-#define VSID_BAT        0xffffffffffc00000
+#define VSID_REAL_DR    0x7ffffffffff00000
+#define VSID_REAL_IR    0x7fffffffffe00000
+#define VSID_SPLIT_MASK 0x7fffffffffe00000
+#define VSID_REAL       0x7fffffffffc00000
+#define VSID_BAT        0x7fffffffffb00000
 #define VSID_PR         0x8000000000000000
 
 extern void kvmppc_mmu_pte_flush(struct kvm_vcpu *vcpu, u64 ea, u64 ea_mask);