diff --git a/arch/powerpc/include/asm/paca.h b/arch/powerpc/include/asm/paca.h
index 17722c7..269c05a 100644
--- a/arch/powerpc/include/asm/paca.h
+++ b/arch/powerpc/include/asm/paca.h
@@ -135,6 +135,7 @@ struct paca_struct {
 	u8 hard_enabled;		/* set if irqs are enabled in MSR */
 	u8 io_sync;			/* writel() needs spin_unlock sync */
 	u8 irq_work_pending;		/* IRQ_WORK interrupt while soft-disable */
+	u8 nap_state_lost;		/* NV GPR values lost in power7_idle */
 
 #ifdef CONFIG_PPC_POWERNV
 	/* Pointer to OPAL machine check event structure set by the
diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c
index ec24b36..8e0db0b 100644
--- a/arch/powerpc/kernel/asm-offsets.c
+++ b/arch/powerpc/kernel/asm-offsets.c
@@ -208,6 +208,7 @@ int main(void)
 	DEFINE(PACA_USER_TIME, offsetof(struct paca_struct, user_time));
 	DEFINE(PACA_SYSTEM_TIME, offsetof(struct paca_struct, system_time));
 	DEFINE(PACA_TRAP_SAVE, offsetof(struct paca_struct, trap_save));
+	DEFINE(PACA_NAPSTATELOST, offsetof(struct paca_struct, nap_state_lost));
 #endif /* CONFIG_PPC64 */
 
 	/* RTAS */
diff --git a/arch/powerpc/kernel/idle_power7.S b/arch/powerpc/kernel/idle_power7.S
index 3a70845..fcdff19 100644
--- a/arch/powerpc/kernel/idle_power7.S
+++ b/arch/powerpc/kernel/idle_power7.S
@@ -54,6 +54,7 @@ _GLOBAL(power7_idle)
 	li	r0,0
 	stb	r0,PACASOFTIRQEN(r13)	/* we'll hard-enable shortly */
 	stb	r0,PACAHARDIRQEN(r13)
+	stb	r0,PACA_NAPSTATELOST(r13)
 
 	/* Continue saving state */
 	SAVE_GPR(2, r1)
@@ -86,6 +87,9 @@ _GLOBAL(power7_wakeup_loss)
 	rfid
 
 _GLOBAL(power7_wakeup_noloss)
+	lbz	r0,PACA_NAPSTATELOST(r13)
+	cmpwi	r0,0
+	bne	.power7_wakeup_loss
 	ld	r1,PACAR1(r13)
 	ld	r4,_MSR(r1)
 	ld	r5,_NIP(r1)
diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
index 7b8dbf6..b70bf22 100644
--- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
@@ -112,6 +112,9 @@ kvm_start_guest:
 	stbcix	r0, r5, r6		/* clear it */
 	stwcix	r8, r5, r7		/* EOI it */
 
+	/* NV GPR values from power7_idle() will no longer be valid */
+	stb	r0, PACA_NAPSTATELOST(r13)
+
 .global kvmppc_hv_entry
 kvmppc_hv_entry: