diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h
index e114eb36721c..8387698bd5b6 100644
--- a/arch/powerpc/include/asm/processor.h
+++ b/arch/powerpc/include/asm/processor.h
@@ -162,6 +162,12 @@ struct thread_struct {
 #endif
 #if defined(CONFIG_PPC_BOOK3S_32) && defined(CONFIG_PPC_KUAP)
 	unsigned long	kuap;		/* opened segments for user access */
+#endif
+#ifdef CONFIG_VMAP_STACK
+	unsigned long	srr0;
+	unsigned long	srr1;
+	unsigned long	dar;
+	unsigned long	dsisr;
 #endif
 	/* Debug Registers */
 	struct debug_reg debug;
diff --git a/arch/powerpc/include/asm/thread_info.h b/arch/powerpc/include/asm/thread_info.h
index 8e1d0195ac36..488d5c4670ff 100644
--- a/arch/powerpc/include/asm/thread_info.h
+++ b/arch/powerpc/include/asm/thread_info.h
@@ -10,10 +10,15 @@
 #define _ASM_POWERPC_THREAD_INFO_H
 
 #include <asm/asm-const.h>
+#include <asm/page.h>
 
 #ifdef __KERNEL__
 
+#if defined(CONFIG_VMAP_STACK) && CONFIG_THREAD_SHIFT < PAGE_SHIFT
+#define THREAD_SHIFT		PAGE_SHIFT
+#else
 #define THREAD_SHIFT		CONFIG_THREAD_SHIFT
+#endif
 
 #define THREAD_SIZE		(1 << THREAD_SHIFT)
 
diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c
index 90e53d432f2e..c25e562f1cd9 100644
--- a/arch/powerpc/kernel/asm-offsets.c
+++ b/arch/powerpc/kernel/asm-offsets.c
@@ -127,6 +127,12 @@ int main(void)
 	OFFSET(KSP_VSID, thread_struct, ksp_vsid);
 #else /* CONFIG_PPC64 */
 	OFFSET(PGDIR, thread_struct, pgdir);
+#ifdef CONFIG_VMAP_STACK
+	OFFSET(SRR0, thread_struct, srr0);
+	OFFSET(SRR1, thread_struct, srr1);
+	OFFSET(DAR, thread_struct, dar);
+	OFFSET(DSISR, thread_struct, dsisr);
+#endif
 #ifdef CONFIG_SPE
 	OFFSET(THREAD_EVR0, thread_struct, evr[0]);
 	OFFSET(THREAD_ACC, thread_struct, acc);
diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S
index 317ad9df8ba8..8f6617cf2689 100644
--- a/arch/powerpc/kernel/entry_32.S
+++ b/arch/powerpc/kernel/entry_32.S
@@ -140,6 +140,7 @@ transfer_to_handler:
 	stw	r12,_CTR(r11)
 	stw	r2,_XER(r11)
 	mfspr	r12,SPRN_SPRG_THREAD
+	tovirt_vmstack r12, r12
 	beq	2f			/* if from user, fix up THREAD.regs */
 	addi	r2, r12, -THREAD
 	addi	r11,r1,STACK_FRAME_OVERHEAD
@@ -195,7 +196,8 @@ transfer_to_handler:
 transfer_to_handler_cont:
 3:
 	mflr	r9
-	tovirt(r2, r2)			/* set r2 to current */
+	tovirt_novmstack r2, r2 	/* set r2 to current */
+	tovirt_vmstack r9, r9
 	lwz	r11,0(r9)		/* virtual address of handler */
 	lwz	r9,4(r9)		/* where to go when done */
 #if defined(CONFIG_PPC_8xx) && defined(CONFIG_PERF_EVENTS)
diff --git a/arch/powerpc/kernel/head_32.h b/arch/powerpc/kernel/head_32.h
index f19a1ab91fb5..e36987aede86 100644
--- a/arch/powerpc/kernel/head_32.h
+++ b/arch/powerpc/kernel/head_32.h
@@ -10,31 +10,54 @@
  * We assume sprg3 has the physical address of the current
  * task's thread_struct.
  */
-.macro EXCEPTION_PROLOG
-	EXCEPTION_PROLOG_0
+.macro EXCEPTION_PROLOG handle_dar_dsisr=0
+	EXCEPTION_PROLOG_0	handle_dar_dsisr=\handle_dar_dsisr
 	EXCEPTION_PROLOG_1
-	EXCEPTION_PROLOG_2
+	EXCEPTION_PROLOG_2	handle_dar_dsisr=\handle_dar_dsisr
 .endm
 
-.macro EXCEPTION_PROLOG_0
+.macro EXCEPTION_PROLOG_0 handle_dar_dsisr=0
 	mtspr	SPRN_SPRG_SCRATCH0,r10
 	mtspr	SPRN_SPRG_SCRATCH1,r11
+#ifdef CONFIG_VMAP_STACK
+	mfspr	r10, SPRN_SPRG_THREAD
+	.if	\handle_dar_dsisr
+	mfspr	r11, SPRN_DAR
+	stw	r11, DAR(r10)
+	mfspr	r11, SPRN_DSISR
+	stw	r11, DSISR(r10)
+	.endif
+	mfspr	r11, SPRN_SRR0
+	stw	r11, SRR0(r10)
+#endif
 	mfspr	r11, SPRN_SRR1		/* check whether user or kernel */
+#ifdef CONFIG_VMAP_STACK
+	stw	r11, SRR1(r10)
+#endif
 	mfcr	r10
 	andi.	r11, r11, MSR_PR
 .endm
 
 .macro EXCEPTION_PROLOG_1
+#ifdef CONFIG_VMAP_STACK
+	li	r11, MSR_KERNEL & ~(MSR_IR | MSR_RI) /* can take DTLB miss */
+	mtmsr	r11
+	isync
+	subi	r11, r1, INT_FRAME_SIZE		/* use r1 if kernel */
+#else
 	tophys(r11,r1)			/* use tophys(r1) if kernel */
+	subi	r11, r11, INT_FRAME_SIZE	/* alloc exc. frame */
+#endif
 	beq	1f
 	mfspr	r11,SPRN_SPRG_THREAD
+	tovirt_vmstack r11, r11
 	lwz	r11,TASK_STACK-THREAD(r11)
-	addi	r11,r11,THREAD_SIZE
-	tophys(r11,r11)
-1:	subi	r11,r11,INT_FRAME_SIZE	/* alloc exc. frame */
+	addi	r11, r11, THREAD_SIZE - INT_FRAME_SIZE
+	tophys_novmstack r11, r11
+1:
 .endm
 
-.macro EXCEPTION_PROLOG_2
+.macro EXCEPTION_PROLOG_2 handle_dar_dsisr=0
 	stw	r10,_CCR(r11)		/* save registers */
 	stw	r12,GPR12(r11)
 	stw	r9,GPR9(r11)
@@ -44,15 +67,32 @@
 	stw	r12,GPR11(r11)
 	mflr	r10
 	stw	r10,_LINK(r11)
+#ifdef CONFIG_VMAP_STACK
+	mfspr	r12, SPRN_SPRG_THREAD
+	tovirt(r12, r12)
+	.if	\handle_dar_dsisr
+	lwz	r10, DAR(r12)
+	stw	r10, _DAR(r11)
+	lwz	r10, DSISR(r12)
+	stw	r10, _DSISR(r11)
+	.endif
+	lwz	r9, SRR1(r12)
+	lwz	r12, SRR0(r12)
+#else
 	mfspr	r12,SPRN_SRR0
 	mfspr	r9,SPRN_SRR1
+#endif
 	stw	r1,GPR1(r11)
 	stw	r1,0(r11)
-	tovirt(r1,r11)			/* set new kernel sp */
+	tovirt_novmstack r1, r11	/* set new kernel sp */
 #ifdef CONFIG_40x
 	rlwinm	r9,r9,0,14,12		/* clear MSR_WE (necessary?) */
+#else
+#ifdef CONFIG_VMAP_STACK
+	li	r10, MSR_KERNEL & ~MSR_IR /* can take exceptions */
 #else
 	li	r10,MSR_KERNEL & ~(MSR_IR|MSR_DR) /* can take exceptions */
+#endif
 	mtmsr	r10			/* (except for mach check in rtas) */
 #endif
 	stw	r0,GPR0(r11)
@@ -65,24 +105,45 @@
 
 .macro SYSCALL_ENTRY trapno
 	mfspr	r12,SPRN_SPRG_THREAD
+#ifdef CONFIG_VMAP_STACK
+	mfspr	r9, SPRN_SRR0
+	mfspr	r11, SPRN_SRR1
+	stw	r9, SRR0(r12)
+	stw	r11, SRR1(r12)
+#endif
 	mfcr	r10
 	lwz	r11,TASK_STACK-THREAD(r12)
-	mflr	r9
-	addi	r11,r11,THREAD_SIZE - INT_FRAME_SIZE
 	rlwinm	r10,r10,0,4,2	/* Clear SO bit in CR */
-	tophys(r11,r11)
+	addi	r11, r11, THREAD_SIZE - INT_FRAME_SIZE
+#ifdef CONFIG_VMAP_STACK
+	li	r9, MSR_KERNEL & ~(MSR_IR | MSR_RI) /* can take DTLB miss */
+	mtmsr	r9
+	isync
+#endif
+	tovirt_vmstack r12, r12
+	tophys_novmstack r11, r11
+	mflr	r9
 	stw	r10,_CCR(r11)		/* save registers */
+	stw	r9, _LINK(r11)
+#ifdef CONFIG_VMAP_STACK
+	lwz	r10, SRR0(r12)
+	lwz	r9, SRR1(r12)
+#else
 	mfspr	r10,SPRN_SRR0
-	stw	r9,_LINK(r11)
 	mfspr	r9,SPRN_SRR1
+#endif
 	stw	r1,GPR1(r11)
 	stw	r1,0(r11)
-	tovirt(r1,r11)			/* set new kernel sp */
+	tovirt_novmstack r1, r11	/* set new kernel sp */
 	stw	r10,_NIP(r11)
 #ifdef CONFIG_40x
 	rlwinm	r9,r9,0,14,12		/* clear MSR_WE (necessary?) */
+#else
+#ifdef CONFIG_VMAP_STACK
+	LOAD_REG_IMMEDIATE(r10, MSR_KERNEL & ~MSR_IR) /* can take exceptions */
 #else
 	LOAD_REG_IMMEDIATE(r10, MSR_KERNEL & ~(MSR_IR|MSR_DR)) /* can take exceptions */
+#endif
 	mtmsr	r10			/* (except for mach check in rtas) */
 #endif
 	lis	r10,STACK_FRAME_REGS_MARKER@ha /* exception frame marker */
@@ -121,7 +182,7 @@
 #endif
 
 3:
-	tovirt(r2, r2)			/* set r2 to current */
+	tovirt_novmstack r2, r2 	/* set r2 to current */
 	lis	r11, transfer_to_syscall@h
 	ori	r11, r11, transfer_to_syscall@l
 #ifdef CONFIG_TRACE_IRQFLAGS
@@ -145,14 +206,51 @@
 .endm
 
 .macro save_dar_dsisr_on_stack reg1, reg2, sp
+#ifndef CONFIG_VMAP_STACK
 	mfspr	\reg1, SPRN_DAR
 	mfspr	\reg2, SPRN_DSISR
 	stw	\reg1, _DAR(\sp)
 	stw	\reg2, _DSISR(\sp)
+#endif
 .endm
 
 .macro get_and_save_dar_dsisr_on_stack reg1, reg2, sp
+#ifdef CONFIG_VMAP_STACK
+	lwz	\reg1, _DAR(\sp)
+	lwz	\reg2, _DSISR(\sp)
+#else
 	save_dar_dsisr_on_stack \reg1, \reg2, \sp
+#endif
+.endm
+
+.macro tovirt_vmstack dst, src
+#ifdef CONFIG_VMAP_STACK
+	tovirt(\dst, \src)
+#else
+	.ifnc	\dst, \src
+	mr	\dst, \src
+	.endif
+#endif
+.endm
+
+.macro tovirt_novmstack dst, src
+#ifndef CONFIG_VMAP_STACK
+	tovirt(\dst, \src)
+#else
+	.ifnc	\dst, \src
+	mr	\dst, \src
+	.endif
+#endif
+.endm
+
+.macro tophys_novmstack dst, src
+#ifndef CONFIG_VMAP_STACK
+	tophys(\dst, \src)
+#else
+	.ifnc	\dst, \src
+	mr	\dst, \src
+	.endif
+#endif
 .endm
 
 /*