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Diffstat (limited to 'arch/powerpc/kvm/book3s_rmhandlers.S')
-rw-r--r--arch/powerpc/kvm/book3s_rmhandlers.S32
1 files changed, 21 insertions, 11 deletions
diff --git a/arch/powerpc/kvm/book3s_rmhandlers.S b/arch/powerpc/kvm/book3s_rmhandlers.S
index 506d5c316c96..2b9c9088d00e 100644
--- a/arch/powerpc/kvm/book3s_rmhandlers.S
+++ b/arch/powerpc/kvm/book3s_rmhandlers.S
@@ -202,8 +202,25 @@ _GLOBAL(kvmppc_rmcall)
#if defined(CONFIG_PPC_BOOK3S_32)
#define STACK_LR INT_FRAME_SIZE+4
+
+/* load_up_xxx have to run with MSR_DR=0 on Book3S_32 */
+#define MSR_EXT_START \
+ PPC_STL r20, _NIP(r1); \
+ mfmsr r20; \
+ LOAD_REG_IMMEDIATE(r3, MSR_DR|MSR_EE); \
+ andc r3,r20,r3; /* Disable DR,EE */ \
+ mtmsr r3; \
+ sync
+
+#define MSR_EXT_END \
+ mtmsr r20; /* Enable DR,EE */ \
+ sync; \
+ PPC_LL r20, _NIP(r1)
+
#elif defined(CONFIG_PPC_BOOK3S_64)
#define STACK_LR _LINK
+#define MSR_EXT_START
+#define MSR_EXT_END
#endif
/*
@@ -215,19 +232,12 @@ _GLOBAL(kvmppc_load_up_ ## what); \
PPC_STLU r1, -INT_FRAME_SIZE(r1); \
mflr r3; \
PPC_STL r3, STACK_LR(r1); \
- PPC_STL r20, _NIP(r1); \
- mfmsr r20; \
- LOAD_REG_IMMEDIATE(r3, MSR_DR|MSR_EE); \
- andc r3,r20,r3; /* Disable DR,EE */ \
- mtmsr r3; \
- sync; \
+ MSR_EXT_START; \
\
bl FUNC(load_up_ ## what); \
\
- mtmsr r20; /* Enable DR,EE */ \
- sync; \
+ MSR_EXT_END; \
PPC_LL r3, STACK_LR(r1); \
- PPC_LL r20, _NIP(r1); \
mtlr r3; \
addi r1, r1, INT_FRAME_SIZE; \
blr
@@ -242,10 +252,10 @@ define_load_up(vsx)
.global kvmppc_trampoline_lowmem
kvmppc_trampoline_lowmem:
- .long kvmppc_handler_lowmem_trampoline - CONFIG_KERNEL_START
+ PPC_LONG kvmppc_handler_lowmem_trampoline - CONFIG_KERNEL_START
.global kvmppc_trampoline_enter
kvmppc_trampoline_enter:
- .long kvmppc_handler_trampoline_enter - CONFIG_KERNEL_START
+ PPC_LONG kvmppc_handler_trampoline_enter - CONFIG_KERNEL_START
#include "book3s_segment.S"