[PATCH 04/18] powerpc: Rename Bit 35 of SRR1 to indicate new purpose

[Jordan Niethe]

Bit 35 of SRR1 is called SRR1_ISI_N_OR_G. This name comes from it being
used to indicate that an ISI was due to the access being no-exec or
guarded. A future ISA version adds another purpose. Now it is also set if there
is a access in a cache-inhibited location for prefixed instruction.
Rename from SRR1_ISI_N_OR_G -> SRR1_ISI_N_G_OR_CIP to reflected this new
role.

Signed-off-by: Jordan Niethe <jniethe5 at gmail.com>
---
 arch/powerpc/include/asm/reg.h      | 2 +-
 arch/powerpc/kvm/book3s_hv_nested.c | 2 +-
 arch/powerpc/kvm/book3s_hv_rm_mmu.c | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h
index 0a6d39fb4769..d3d8212603cb 100644
--- a/arch/powerpc/include/asm/reg.h
+++ b/arch/powerpc/include/asm/reg.h
@@ -750,7 +750,7 @@
 #define SPRN_SRR0	0x01A	/* Save/Restore Register 0 */
 #define SPRN_SRR1	0x01B	/* Save/Restore Register 1 */
 #define   SRR1_ISI_NOPT		0x40000000 /* ISI: Not found in hash */
-#define   SRR1_ISI_N_OR_G	0x10000000 /* ISI: Access is no-exec or G */
+#define   SRR1_ISI_N_G_OR_CIP	0x10000000 /* ISI: Access is no-exec or G or CI for a prefixed instruction */
 #define   SRR1_ISI_PROT		0x08000000 /* ISI: Other protection fault */
 #define   SRR1_WAKEMASK		0x00380000 /* reason for wakeup */
 #define   SRR1_WAKEMASK_P8	0x003c0000 /* reason for wakeup on POWER8 and 9 */
diff --git a/arch/powerpc/kvm/book3s_hv_nested.c b/arch/powerpc/kvm/book3s_hv_nested.c
index cdf30c6eaf54..32798ee76f27 100644
--- a/arch/powerpc/kvm/book3s_hv_nested.c
+++ b/arch/powerpc/kvm/book3s_hv_nested.c
@@ -1169,7 +1169,7 @@ static int kvmhv_translate_addr_nested(struct kvm_vcpu *vcpu,
 		} else if (vcpu->arch.trap == BOOK3S_INTERRUPT_H_INST_STORAGE) {
 			/* Can we execute? */
 			if (!gpte_p->may_execute) {
-				flags |= SRR1_ISI_N_OR_G;
+				flags |= SRR1_ISI_N_G_OR_CIP;
 				goto forward_to_l1;
 			}
 		} else {
diff --git a/arch/powerpc/kvm/book3s_hv_rm_mmu.c b/arch/powerpc/kvm/book3s_hv_rm_mmu.c
index 220305454c23..b53a9f1c1a46 100644
--- a/arch/powerpc/kvm/book3s_hv_rm_mmu.c
+++ b/arch/powerpc/kvm/book3s_hv_rm_mmu.c
@@ -1260,7 +1260,7 @@ long kvmppc_hpte_hv_fault(struct kvm_vcpu *vcpu, unsigned long addr,
 	status &= ~DSISR_NOHPTE;	/* DSISR_NOHPTE == SRR1_ISI_NOPT */
 	if (!data) {
 		if (gr & (HPTE_R_N | HPTE_R_G))
-			return status | SRR1_ISI_N_OR_G;
+			return status | SRR1_ISI_N_G_OR_CIP;
 		if (!hpte_read_permission(pp, slb_v & key))
 			return status | SRR1_ISI_PROT;
 	} else if (status & DSISR_ISSTORE) {
-- 
2.20.1