1 files changed, 20 insertions, 107 deletions
diff --git a/arch/powerpc/kvm/book3s_rmhandlers.S b/arch/powerpc/kvm/book3s_rmhandlers.S
index c1f877c4a88..16c4d88ba27 100644
--- a/arch/powerpc/kvm/book3s_rmhandlers.S
+++ b/arch/powerpc/kvm/book3s_rmhandlers.S
@@ -20,6 +20,7 @@
 #include <asm/ppc_asm.h>
 #include <asm/kvm_asm.h>
 #include <asm/reg.h>
+#include <asm/mmu.h>
 #include <asm/page.h>
 #include <asm/asm-offsets.h>
 
@@ -35,37 +36,14 @@
 
 #if defined(CONFIG_PPC_BOOK3S_64)
 
-#define LOAD_SHADOW_VCPU(reg)	GET_PACA(reg)					
-#define MSR_NOIRQ		MSR_KERNEL & ~(MSR_IR | MSR_DR)
+#if defined(_CALL_ELF) && _CALL_ELF == 2
+#define FUNC(name) 		name
+#else
 #define FUNC(name) 		GLUE(.,name)
-
-kvmppc_skip_interrupt:
-	/*
-	 * Here all GPRs are unchanged from when the interrupt happened
-	 * except for r13, which is saved in SPRG_SCRATCH0.
-	 */
-	mfspr	r13, SPRN_SRR0
-	addi	r13, r13, 4
-	mtspr	SPRN_SRR0, r13
-	GET_SCRATCH0(r13)
-	rfid
-	b	.
-
-kvmppc_skip_Hinterrupt:
-	/*
-	 * Here all GPRs are unchanged from when the interrupt happened
-	 * except for r13, which is saved in SPRG_SCRATCH0.
-	 */
-	mfspr	r13, SPRN_HSRR0
-	addi	r13, r13, 4
-	mtspr	SPRN_HSRR0, r13
-	GET_SCRATCH0(r13)
-	hrfid
-	b	.
+#endif
 
 #elif defined(CONFIG_PPC_BOOK3S_32)
 
-#define MSR_NOIRQ		MSR_KERNEL
 #define FUNC(name)		name
 
 .macro INTERRUPT_TRAMPOLINE intno
@@ -167,90 +145,25 @@ kvmppc_handler_skip_ins:
 #endif
 
 /*
- * This trampoline brings us back to a real mode handler
- *
- * Input Registers:
- *
- * R5 = SRR0
- * R6 = SRR1
- * LR = real-mode IP
+ * Call kvmppc_handler_trampoline_enter in real mode
  *
+ * On entry, r4 contains the guest shadow MSR
+ * MSR.EE has to be 0 when calling this function
  */
-.global kvmppc_handler_lowmem_trampoline
-kvmppc_handler_lowmem_trampoline:
+_GLOBAL_TOC(kvmppc_entry_trampoline)
+	mfmsr	r5
+	LOAD_REG_ADDR(r7, kvmppc_handler_trampoline_enter)
+	toreal(r7)
 
-	mtsrr0	r5
+	li	r6, MSR_IR | MSR_DR
+	andc	r6, r5, r6	/* Clear DR and IR in MSR value */
+	/*
+	 * Set EE in HOST_MSR so that it's enabled when we get into our
+	 * C exit handler function.
+	 */
+	ori	r5, r5, MSR_EE
+	mtsrr0	r7
 	mtsrr1	r6
-	blr
-kvmppc_handler_lowmem_trampoline_end:
-
-/*
- * Call a function in real mode
- *
- * Input Registers:
- *
- * R3 = function
- * R4 = MSR
- * R5 = scratch register
- *
- */
-_GLOBAL(kvmppc_rmcall)
-	LOAD_REG_IMMEDIATE(r5, MSR_NOIRQ)
-	mtmsr	r5		/* Disable relocation and interrupts, so mtsrr
-				   doesn't get interrupted */
-	sync
-	mtsrr0	r3
-	mtsrr1	r4
 	RFI
 
-#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
-
-/*
- * Activate current's external feature (FPU/Altivec/VSX)
- */
-#define define_load_up(what) 					\
-								\
-_GLOBAL(kvmppc_load_up_ ## what);				\
-	PPC_STLU r1, -INT_FRAME_SIZE(r1);			\
-	mflr	r3;						\
-	PPC_STL	r3, STACK_LR(r1);				\
-	MSR_EXT_START;						\
-								\
-	bl	FUNC(load_up_ ## what);				\
-								\
-	MSR_EXT_END;						\
-	PPC_LL	r3, STACK_LR(r1);				\
-	mtlr	r3;						\
-	addi	r1, r1, INT_FRAME_SIZE;				\
-	blr
-
-define_load_up(fpu)
-#ifdef CONFIG_ALTIVEC
-define_load_up(altivec)
-#endif
-#ifdef CONFIG_VSX
-define_load_up(vsx)
-#endif
-
 #include "book3s_segment.S"