kvm: ppc: bookehv: Save restore SPRN_SPRG9 on guest entry exit
SPRN_SPRG is used by debug interrupt handler, so this is required for
debug support.
Signed-off-by: Bharat Bhushan <Bharat.Bhushan@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/arch/powerpc/kvm/bookehv_interrupts.S b/arch/powerpc/kvm/bookehv_interrupts.S
index e000b39..b4f8fba 100644
--- a/arch/powerpc/kvm/bookehv_interrupts.S
+++ b/arch/powerpc/kvm/bookehv_interrupts.S
@@ -398,6 +398,7 @@
#ifdef CONFIG_64BIT
PPC_LL r3, PACA_SPRG_VDSO(r13)
#endif
+ mfspr r5, SPRN_SPRG9
PPC_STD(r6, VCPU_SHARED_SPRG4, r11)
mfspr r8, SPRN_SPRG6
PPC_STD(r7, VCPU_SHARED_SPRG5, r11)
@@ -405,6 +406,7 @@
#ifdef CONFIG_64BIT
mtspr SPRN_SPRG_VDSO_WRITE, r3
#endif
+ PPC_STD(r5, VCPU_SPRG9, r4)
PPC_STD(r8, VCPU_SHARED_SPRG6, r11)
mfxer r3
PPC_STD(r9, VCPU_SHARED_SPRG7, r11)
@@ -639,7 +641,9 @@
mtspr SPRN_SPRG5W, r6
PPC_LD(r8, VCPU_SHARED_SPRG7, r11)
mtspr SPRN_SPRG6W, r7
+ PPC_LD(r5, VCPU_SPRG9, r4)
mtspr SPRN_SPRG7W, r8
+ mtspr SPRN_SPRG9, r5
/* Load some guest volatiles. */
PPC_LL r3, VCPU_LR(r4)