tlb: Add "ifetch" argument to cpu_mmu_index()

This is set to true when the index is for an instruction fetch
translation.

The core get_page_addr_code() sets it, as do the SOFTMMU_CODE_ACCESS
acessors.

All targets ignore it for now, and all other callers pass "false".

This will allow targets who wish to split the mmu index between
instruction and data accesses to do so. A subsequent patch will
do just that for PowerPC.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Message-Id: <1439796853-4410-2-git-send-email-benh@kernel.crashing.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>

2 files changed, 4 insertions, 4 deletions

diff --git a/target-arm/cpu.h b/target-arm/cpu.h
index 5abd8ba..b9068c9 100644
--- a/target-arm/cpu.h
+++ b/target-arm/cpu.h
@@ -1678,7 +1678,7 @@ static inline int arm_mmu_idx_to_el(ARMMMUIdx mmu_idx)
 }
 
 /* Determine the current mmu_idx to use for normal loads/stores */
-static inline int cpu_mmu_index(CPUARMState *env)
+static inline int cpu_mmu_index(CPUARMState *env, bool ifetch)
 {
     int el = arm_current_el(env);
 
@@ -1911,7 +1911,7 @@ static inline void cpu_get_tb_cpu_state(CPUARMState *env, target_ulong *pc,
                    << ARM_TBFLAG_XSCALE_CPAR_SHIFT);
     }
 
-    *flags |= (cpu_mmu_index(env) << ARM_TBFLAG_MMUIDX_SHIFT);
+    *flags |= (cpu_mmu_index(env, false) << ARM_TBFLAG_MMUIDX_SHIFT);
     /* The SS_ACTIVE and PSTATE_SS bits correspond to the state machine
      * states defined in the ARM ARM for software singlestep:
      *  SS_ACTIVE   PSTATE.SS   State
diff --git a/target-arm/helper.c b/target-arm/helper.c
index d453120..2c6ec9d 100644
--- a/target-arm/helper.c
+++ b/target-arm/helper.c
@@ -6892,7 +6892,7 @@ hwaddr arm_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
     uint32_t fsr;
     MemTxAttrs attrs = {};
 
-    ret = get_phys_addr(env, addr, 0, cpu_mmu_index(env), &phys_addr,
+    ret = get_phys_addr(env, addr, 0, cpu_mmu_index(env, false), &phys_addr,
                         &attrs, &prot, &page_size, &fsr);
 
     if (ret) {
@@ -7057,7 +7057,7 @@ void HELPER(dc_zva)(CPUARMState *env, uint64_t vaddr_in)
         int maxidx = DIV_ROUND_UP(blocklen, TARGET_PAGE_SIZE);
         void *hostaddr[maxidx];
         int try, i;
-        unsigned mmu_idx = cpu_mmu_index(env);
+        unsigned mmu_idx = cpu_mmu_index(env, false);
         TCGMemOpIdx oi = make_memop_idx(MO_UB, mmu_idx);
 
         for (try = 0; try < 2; try++) {