[PATCH 26/62] target/arm: Add is_secure parameter to regime_translation_disabled

From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: qemu-arm@nongnu.org
Subject: [PATCH 26/62] target/arm: Add is_secure parameter to regime_translation_disabled
Date: Sun,  3 Jul 2022 13:53:43 +0530	[thread overview]
Message-ID: <20220703082419.770989-27-richard.henderson@linaro.org> (raw)
In-Reply-To: <20220703082419.770989-1-richard.henderson@linaro.org>

Remove the use of regime_is_secure from regime_translation_disabled.

This fixes a bug in S1_ptw_translate and get_phys_addr where we had
passed ARMMMUIdx_Stage2 and not ARMMMUIdx_Stage2_S to determine if
Stage2 is disabled, affecting FEAT_SEL2.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/arm/ptw.c | 21 ++++++++++++---------
 1 file changed, 12 insertions(+), 9 deletions(-)

diff --git a/target/arm/ptw.c b/target/arm/ptw.c
index 33fa8f094b..8313a2d74a 100644
--- a/target/arm/ptw.c
+++ b/target/arm/ptw.c
@@ -131,12 +131,13 @@ static uint64_t regime_ttbr(CPUARMState *env, ARMMMUIdx mmu_idx, int ttbrn)
 }
 
 /* Return true if the specified stage of address translation is disabled */
-static bool regime_translation_disabled(CPUARMState *env, ARMMMUIdx mmu_idx)
+static bool regime_translation_disabled(CPUARMState *env, ARMMMUIdx mmu_idx,
+                                        bool is_secure)
 {
     uint64_t hcr_el2;
 
     if (arm_feature(env, ARM_FEATURE_M)) {
-        switch (env->v7m.mpu_ctrl[regime_is_secure(env, mmu_idx)] &
+        switch (env->v7m.mpu_ctrl[is_secure] &
                 (R_V7M_MPU_CTRL_ENABLE_MASK | R_V7M_MPU_CTRL_HFNMIENA_MASK)) {
         case R_V7M_MPU_CTRL_ENABLE_MASK:
             /* Enabled, but not for HardFault and NMI */
@@ -163,7 +164,7 @@ static bool regime_translation_disabled(CPUARMState *env, ARMMMUIdx mmu_idx)
 
     if (hcr_el2 & HCR_TGE) {
         /* TGE means that NS EL0/1 act as if SCTLR_EL1.M is zero */
-        if (!regime_is_secure(env, mmu_idx) && regime_el(env, mmu_idx) == 1) {
+        if (!is_secure && regime_el(env, mmu_idx) == 1) {
             return true;
         }
     }
@@ -201,7 +202,7 @@ static hwaddr S1_ptw_translate(CPUARMState *env, ARMMMUIdx mmu_idx,
                                ARMMMUFaultInfo *fi)
 {
     if (arm_mmu_idx_is_stage1_of_2(mmu_idx) &&
-        !regime_translation_disabled(env, ARMMMUIdx_Stage2)) {
+        !regime_translation_disabled(env, ARMMMUIdx_Stage2, *is_secure)) {
         ARMMMUIdx s2_mmu_idx = *is_secure ? ARMMMUIdx_Stage2_S
                                           : ARMMMUIdx_Stage2;
         GetPhysAddrResult s2 = {};
@@ -1351,9 +1352,10 @@ static bool get_phys_addr_pmsav5(CPUARMState *env, uint32_t address,
     int n;
     uint32_t mask;
     uint32_t base;
+    bool is_secure = regime_is_secure(env, mmu_idx);
     bool is_user = regime_is_user(env, mmu_idx);
 
-    if (regime_translation_disabled(env, mmu_idx)) {
+    if (regime_translation_disabled(env, mmu_idx, is_secure)) {
         /* MPU disabled.  */
         result->phys = address;
         result->prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
@@ -1517,7 +1519,7 @@ static bool get_phys_addr_pmsav7(CPUARMState *env, uint32_t address,
     result->page_size = TARGET_PAGE_SIZE;
     result->prot = 0;
 
-    if (regime_translation_disabled(env, mmu_idx) ||
+    if (regime_translation_disabled(env, mmu_idx, secure) ||
         m_is_ppb_region(env, address)) {
         /*
          * MPU disabled or M profile PPB access: use default memory map.
@@ -1728,7 +1730,7 @@ bool pmsav8_mpu_lookup(CPUARMState *env, uint32_t address,
      * are done in arm_v7m_load_vector(), which always does a direct
      * read using address_space_ldl(), rather than going via this function.
      */
-    if (regime_translation_disabled(env, mmu_idx)) { /* MPU disabled */
+    if (regime_translation_disabled(env, mmu_idx, secure)) { /* MPU disabled */
         hit = true;
     } else if (m_is_ppb_region(env, address)) {
         hit = true;
@@ -2303,7 +2305,8 @@ bool get_phys_addr(CPUARMState *env, target_ulong address,
                                 result, fi);
 
             /* If S1 fails or S2 is disabled, return early.  */
-            if (ret || regime_translation_disabled(env, ARMMMUIdx_Stage2)) {
+            if (ret || regime_translation_disabled(env, ARMMMUIdx_Stage2,
+                                                   is_secure)) {
                 return ret;
             }
 
@@ -2431,7 +2434,7 @@ bool get_phys_addr(CPUARMState *env, target_ulong address,
 
     /* Definitely a real MMU, not an MPU */
 
-    if (regime_translation_disabled(env, mmu_idx)) {
+    if (regime_translation_disabled(env, mmu_idx, is_secure)) {
         uint64_t hcr;
         uint8_t memattr;
 
-- 
2.34.1


