Merge tag 'v3.10.9' into linux-lng - update linux-lng to v3.10.9linux-lng-3.10.9

This is the 3.10.9 stable release

3 files changed, 27 insertions, 3 deletions

diff --git a/arch/arm/kvm/coproc.c b/arch/arm/kvm/coproc.c
index 8eea97be1ed5..4a5199070430 100644
--- a/arch/arm/kvm/coproc.c
+++ b/arch/arm/kvm/coproc.c
@@ -180,6 +180,10 @@ static const struct coproc_reg cp15_regs[] = {
 			NULL, reset_unknown, c6_DFAR },
 	{ CRn( 6), CRm( 0), Op1( 0), Op2( 2), is32,
 			NULL, reset_unknown, c6_IFAR },
+
+	/* PAR swapped by interrupt.S */
+	{ CRn( 7), Op1( 0), is64, NULL, reset_unknown64, c7_PAR },
+
 	/*
 	 * DC{C,I,CI}SW operations:
 	 */
diff --git a/arch/arm/kvm/interrupts.S b/arch/arm/kvm/interrupts.S
index f7793df62f58..16cd4ba5d7fd 100644
--- a/arch/arm/kvm/interrupts.S
+++ b/arch/arm/kvm/interrupts.S
@@ -49,6 +49,7 @@ __kvm_hyp_code_start:
 ENTRY(__kvm_tlb_flush_vmid_ipa)
 	push	{r2, r3}
 
+	dsb	ishst
 	add	r0, r0, #KVM_VTTBR
 	ldrd	r2, r3, [r0]
 	mcrr	p15, 6, r2, r3, c2	@ Write VTTBR
@@ -291,6 +292,7 @@ THUMB(	orr	r2, r2, #PSR_T_BIT	)
 	ldr	r2, =BSYM(panic)
 	msr	ELR_hyp, r2
 	ldr	r0, =\panic_str
+	clrex				@ Clear exclusive monitor
 	eret
 .endm
 
@@ -414,6 +416,10 @@ guest_trap:
 	mrcne	p15, 4, r2, c6, c0, 4	@ HPFAR
 	bne	3f
 
+	/* Preserve PAR */
+	mrrc	p15, 0, r0, r1, c7	@ PAR
+	push	{r0, r1}
+
 	/* Resolve IPA using the xFAR */
 	mcr	p15, 0, r2, c7, c8, 0	@ ATS1CPR
 	isb
@@ -424,13 +430,20 @@ guest_trap:
 	lsl	r2, r2, #4
 	orr	r2, r2, r1, lsl #24
 
+	/* Restore PAR */
+	pop	{r0, r1}
+	mcrr	p15, 0, r0, r1, c7	@ PAR
+
 3:	load_vcpu			@ Load VCPU pointer to r0
 	str	r2, [r0, #VCPU_HPFAR]
 
 1:	mov	r1, #ARM_EXCEPTION_HVC
 	b	__kvm_vcpu_return
 
-4:	pop	{r0, r1, r2}		@ Failed translation, return to guest
+4:	pop	{r0, r1}		@ Failed translation, return to guest
+	mcrr	p15, 0, r0, r1, c7	@ PAR
+	clrex
+	pop	{r0, r1, r2}
 	eret
 
 /*
@@ -456,6 +469,7 @@ switch_to_guest_vfp:
 
 	pop	{r3-r7}
 	pop	{r0-r2}
+	clrex
 	eret
 #endif
 
diff --git a/arch/arm/kvm/interrupts_head.S b/arch/arm/kvm/interrupts_head.S
index 3c8f2f0b4c5e..2b44b95a86dd 100644
--- a/arch/arm/kvm/interrupts_head.S
+++ b/arch/arm/kvm/interrupts_head.S
@@ -302,11 +302,14 @@ vcpu	.req	r0		@ vcpu pointer always in r0
 	.endif
 
 	mrc	p15, 0, r2, c14, c1, 0	@ CNTKCTL
+	mrrc	p15, 0, r4, r5, c7	@ PAR
 
 	.if \store_to_vcpu == 0
-	push	{r2}
+	push	{r2,r4-r5}
 	.else
 	str	r2, [vcpu, #CP15_OFFSET(c14_CNTKCTL)]
+	add	r12, vcpu, #CP15_OFFSET(c7_PAR)
+	strd	r4, r5, [r12]
 	.endif
 .endm
 
@@ -319,12 +322,15 @@ vcpu	.req	r0		@ vcpu pointer always in r0
  */
 .macro write_cp15_state read_from_vcpu
 	.if \read_from_vcpu == 0
-	pop	{r2}
+	pop	{r2,r4-r5}
 	.else
 	ldr	r2, [vcpu, #CP15_OFFSET(c14_CNTKCTL)]
+	add	r12, vcpu, #CP15_OFFSET(c7_PAR)
+	ldrd	r4, r5, [r12]
 	.endif
 
 	mcr	p15, 0, r2, c14, c1, 0	@ CNTKCTL
+	mcrr	p15, 0, r4, r5, c7	@ PAR
 
 	.if \read_from_vcpu == 0
 	pop	{r2-r12}