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[PULL,42/66] ppc: Don't set access_type on all load/stores on hash64

Message ID 1473133253-17598-43-git-send-email-david@gibson.dropbear.id.au (mailing list archive)
State New, archived
Headers show

Commit Message

David Gibson Sept. 6, 2016, 3:40 a.m. UTC 
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>

We don't use it so let's not generate the updates.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
---
 target-ppc/translate.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
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Patch

diff --git a/target-ppc/translate.c b/target-ppc/translate.c
index bc5b2ee..5986435 100644
--- a/target-ppc/translate.c
+++ b/target-ppc/translate.c
@@ -195,6 +195,7 @@  struct DisasContext {
     /* Routine used to access memory */
     bool pr, hv, dr, le_mode;
     bool lazy_tlb_flush;
+    bool need_access_type;
     int mem_idx;
     int access_type;
     /* Translation flags */
@@ -252,7 +253,7 @@  struct opc_handler_t {
 
 static inline void gen_set_access_type(DisasContext *ctx, int access_type)
 {
-    if (ctx->access_type != access_type) {
+    if (ctx->need_access_type && ctx->access_type != access_type) {
         tcg_gen_movi_i32(cpu_access_type, access_type);
         ctx->access_type = access_type;
     }
@@ -6927,6 +6928,7 @@  void gen_intermediate_code(CPUPPCState *env, struct TranslationBlock *tb)
     ctx.insns_flags = env->insns_flags;
     ctx.insns_flags2 = env->insns_flags2;
     ctx.access_type = -1;
+    ctx.need_access_type = !(env->mmu_model & POWERPC_MMU_64B);
     ctx.le_mode = !!(env->hflags & (1 << MSR_LE));
     ctx.default_tcg_memop_mask = ctx.le_mode ? MO_LE : MO_BE;
 #if defined(TARGET_PPC64)