[PULL 15/26] target/arm: Move s1_is_el0 into S1Translate

[Peter Maydell]

From: Richard Henderson <richard.henderson@linaro.org>

Instead of passing this to get_phys_addr_lpae, stash it
in the S1Translate structure.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230620124418.805717-16-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/ptw.c | 27 ++++++++++++---------------
 1 file changed, 12 insertions(+), 15 deletions(-)

diff --git a/target/arm/ptw.c b/target/arm/ptw.c
index 6d5e4855a33..558b4b731b8 100644
--- a/target/arm/ptw.c
+++ b/target/arm/ptw.c
@@ -24,6 +24,12 @@ typedef struct S1Translate {
     ARMSecuritySpace in_space;
     bool in_secure;
     bool in_debug;
+    /*
+     * If this is stage 2 of a stage 1+2 page table walk, then this must
+     * be true if stage 1 is an EL0 access; otherwise this is ignored.
+     * Stage 2 is indicated by in_mmu_idx set to ARMMMUIdx_Stage2{,_S}.
+     */
+    bool in_s1_is_el0;
     bool out_secure;
     bool out_rw;
     bool out_be;
@@ -34,8 +40,7 @@ typedef struct S1Translate {
 } S1Translate;
 
 static bool get_phys_addr_lpae(CPUARMState *env, S1Translate *ptw,
-                               uint64_t address,
-                               MMUAccessType access_type, bool s1_is_el0,
+                               uint64_t address, MMUAccessType access_type,
                                GetPhysAddrResult *result, ARMMMUFaultInfo *fi);
 
 static bool get_phys_addr_with_struct(CPUARMState *env, S1Translate *ptw,
@@ -1289,17 +1294,12 @@ static int check_s2_mmu_setup(ARMCPU *cpu, bool 
is_aa64, uint64_t tcr,
  * @ptw: Current and next stage parameters for the walk.
  * @address: virtual address to get physical address for
  * @access_type: MMU_DATA_LOAD, MMU_DATA_STORE or MMU_INST_FETCH
- * @s1_is_el0: if @ptw->in_mmu_idx is ARMMMUIdx_Stage2
- *             (so this is a stage 2 page table walk),
- *             must be true if this is stage 2 of a stage 1+2
- *             walk for an EL0 access. If @mmu_idx is anything else,
- *             @s1_is_el0 is ignored.
  * @result: set on translation success,
  * @fi: set to fault info if the translation fails
  */
 static bool get_phys_addr_lpae(CPUARMState *env, S1Translate *ptw,
                                uint64_t address,
-                               MMUAccessType access_type, bool s1_is_el0,
+                               MMUAccessType access_type,
                                GetPhysAddrResult *result, ARMMMUFaultInfo *fi)
 {
     ARMCPU *cpu = env_archcpu(env);
@@ -1635,7 +1635,7 @@ static bool get_phys_addr_lpae(CPUARMState *env, 
S1Translate *ptw,
             result->f.prot = get_S2prot_noexecute(ap);
         } else {
             xn = extract64(attrs, 53, 2);
-            result->f.prot = get_S2prot(env, ap, xn, s1_is_el0);
+            result->f.prot = get_S2prot(env, ap, xn, ptw->in_s1_is_el0);
         }
     } else {
         int nse, ns = extract32(attrs, 5, 1);
@@ -2858,7 +2858,6 @@ static bool get_phys_addr_twostage(CPUARMState *env, 
S1Translate *ptw,
     bool ret, ipa_secure;
     ARMCacheAttrs cacheattrs1;
     ARMSecuritySpace ipa_space;
-    bool is_el0;
     uint64_t hcr;
 
     ret = get_phys_addr_with_struct(env, ptw, address, access_type, result, 
fi);
@@ -2872,7 +2871,7 @@ static bool get_phys_addr_twostage(CPUARMState *env, 
S1Translate *ptw,
     ipa_secure = result->f.attrs.secure;
     ipa_space = result->f.attrs.space;
 
-    is_el0 = ptw->in_mmu_idx == ARMMMUIdx_Stage1_E0;
+    ptw->in_s1_is_el0 = ptw->in_mmu_idx == ARMMMUIdx_Stage1_E0;
     ptw->in_mmu_idx = ipa_secure ? ARMMMUIdx_Stage2_S : ARMMMUIdx_Stage2;
     ptw->in_secure = ipa_secure;
     ptw->in_space = ipa_space;
@@ -2891,8 +2890,7 @@ static bool get_phys_addr_twostage(CPUARMState *env, 
S1Translate *ptw,
         ret = get_phys_addr_pmsav8(env, ipa, access_type,
                                    ptw->in_mmu_idx, is_secure, result, fi);
     } else {
-        ret = get_phys_addr_lpae(env, ptw, ipa, access_type,
-                                 is_el0, result, fi);
+        ret = get_phys_addr_lpae(env, ptw, ipa, access_type, result, fi);
     }
     fi->s2addr = ipa;
 
@@ -3078,8 +3076,7 @@ static bool get_phys_addr_with_struct(CPUARMState *env, 
S1Translate *ptw,
     }
 
     if (regime_using_lpae_format(env, mmu_idx)) {
-        return get_phys_addr_lpae(env, ptw, address, access_type, false,
-                                  result, fi);
+        return get_phys_addr_lpae(env, ptw, address, access_type, result, fi);
     } else if (arm_feature(env, ARM_FEATURE_V7) ||
                regime_sctlr(env, mmu_idx) & SCTLR_XP) {
         return get_phys_addr_v6(env, ptw, address, access_type, result, fi);
-- 
2.34.1