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authorMichael Ellerman <mpe@ellerman.id.au>2019-03-02 06:42:28 +0300
committerMichael Ellerman <mpe@ellerman.id.au>2019-03-02 06:42:28 +0300
commit2de04718ecf15bda3ca934b39855b763cb385fe6 (patch)
tree4d6db1f2d11af22e9636e9bcd8d0dc9822a13ade /arch/powerpc
parentbd3524feac214f0ab9693c6d4c0cb5be8e1318b9 (diff)
parentc3c7470c75566a077c8dc71dcf8f1948b8ddfab4 (diff)
downloadlinux-2de04718ecf15bda3ca934b39855b763cb385fe6.tar.xz
Merge branch 'topic/ppc-kvm' into next
Merge another commit in the topic/ppc-kvm branch we're sharing with kvm-ppc.
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/kvm/book3s_hv_rmhandlers.S26
1 files changed, 17 insertions, 9 deletions
diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
index f24f6a2f8eb5..25043b50cb30 100644
--- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S
+++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S
@@ -58,6 +58,8 @@ END_FTR_SECTION_IFCLR(CPU_FTR_ARCH_300)
#define STACK_SLOT_DAWR (SFS-56)
#define STACK_SLOT_DAWRX (SFS-64)
#define STACK_SLOT_HFSCR (SFS-72)
+#define STACK_SLOT_AMR (SFS-80)
+#define STACK_SLOT_UAMOR (SFS-88)
/* the following is used by the P9 short path */
#define STACK_SLOT_NVGPRS (SFS-152) /* 18 gprs */
@@ -726,11 +728,9 @@ BEGIN_FTR_SECTION
mfspr r5, SPRN_TIDR
mfspr r6, SPRN_PSSCR
mfspr r7, SPRN_PID
- mfspr r8, SPRN_IAMR
std r5, STACK_SLOT_TID(r1)
std r6, STACK_SLOT_PSSCR(r1)
std r7, STACK_SLOT_PID(r1)
- std r8, STACK_SLOT_IAMR(r1)
mfspr r5, SPRN_HFSCR
std r5, STACK_SLOT_HFSCR(r1)
END_FTR_SECTION_IFSET(CPU_FTR_ARCH_300)
@@ -738,11 +738,18 @@ BEGIN_FTR_SECTION
mfspr r5, SPRN_CIABR
mfspr r6, SPRN_DAWR
mfspr r7, SPRN_DAWRX
+ mfspr r8, SPRN_IAMR
std r5, STACK_SLOT_CIABR(r1)
std r6, STACK_SLOT_DAWR(r1)
std r7, STACK_SLOT_DAWRX(r1)
+ std r8, STACK_SLOT_IAMR(r1)
END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S)
+ mfspr r5, SPRN_AMR
+ std r5, STACK_SLOT_AMR(r1)
+ mfspr r6, SPRN_UAMOR
+ std r6, STACK_SLOT_UAMOR(r1)
+
BEGIN_FTR_SECTION
/* Set partition DABR */
/* Do this before re-enabling PMU to avoid P7 DABR corruption bug */
@@ -1631,22 +1638,25 @@ ALT_FTR_SECTION_END_IFCLR(CPU_FTR_ARCH_300)
mtspr SPRN_PSPB, r0
mtspr SPRN_WORT, r0
BEGIN_FTR_SECTION
- mtspr SPRN_IAMR, r0
mtspr SPRN_TCSCR, r0
/* Set MMCRS to 1<<31 to freeze and disable the SPMC counters */
li r0, 1
sldi r0, r0, 31
mtspr SPRN_MMCRS, r0
END_FTR_SECTION_IFCLR(CPU_FTR_ARCH_300)
-8:
- /* Save and reset AMR and UAMOR before turning on the MMU */
+ /* Save and restore AMR, IAMR and UAMOR before turning on the MMU */
+ ld r8, STACK_SLOT_IAMR(r1)
+ mtspr SPRN_IAMR, r8
+
+8: /* Power7 jumps back in here */
mfspr r5,SPRN_AMR
mfspr r6,SPRN_UAMOR
std r5,VCPU_AMR(r9)
std r6,VCPU_UAMOR(r9)
- li r6,0
- mtspr SPRN_AMR,r6
+ ld r5,STACK_SLOT_AMR(r1)
+ ld r6,STACK_SLOT_UAMOR(r1)
+ mtspr SPRN_AMR, r5
mtspr SPRN_UAMOR, r6
/* Switch DSCR back to host value */
@@ -1746,11 +1756,9 @@ BEGIN_FTR_SECTION
ld r5, STACK_SLOT_TID(r1)
ld r6, STACK_SLOT_PSSCR(r1)
ld r7, STACK_SLOT_PID(r1)
- ld r8, STACK_SLOT_IAMR(r1)
mtspr SPRN_TIDR, r5
mtspr SPRN_PSSCR, r6
mtspr SPRN_PID, r7
- mtspr SPRN_IAMR, r8
END_FTR_SECTION_IFSET(CPU_FTR_ARCH_300)
#ifdef CONFIG_PPC_RADIX_MMU