[PULL 12/39] target/arm: Add is_secure parameter to v8m_security_lookup

Maintainers: Samuel Thibault <samuel.thibault@ens-lyon.org>, "Marc-André Lureau" <marcandre.lureau@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>, "Michael S. Tsirkin" <mst@redhat.com>, Igor Mammedov <imammedo@redhat.com>, Ani Sinha <ani@anisinha.ca>, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, Richard Henderson <richard.henderson@linaro.org>, Eduardo Habkost <eduardo@habkost.net>, "Cédric Le Goater" <clg@kaod.org>, Daniel Henrique Barboza <danielhb413@gmail.com>, David Gibson <david@gibson.dropbear.id.au>, Greg Kurz <groug@kaod.org>, Vikram Garhwal <fnu.vikram@xilinx.com>, Francisco Iglesias <francisco.iglesias@xilinx.com>, Pavel Pisa <pisa@cmp.felk.cvut.cz>, Jason Wang <jasowang@redhat.com>, Dmitry Fleytman <dmitry.fleytman@gmail.com>, Gerd Hoffmann <kraxel@redhat.com>, "Daniel P. Berrangé" <berrange@redhat.com>, Peter Maydell <peter.maydell@linaro.org>
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[PULL 12/39] target/arm: Add is_secure parameter to v8m_security_lookup
Posted by Peter Maydell 2 years, 7 months ago
From: Richard Henderson <richard.henderson@linaro.org>

Remove the use of regime_is_secure from v8m_security_lookup,
passing the new parameter to the lookup instead.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220822152741.1617527-12-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/internals.h | 2 +-
 target/arm/m_helper.c  | 9 ++++++---
 target/arm/ptw.c       | 9 +++++----
 3 files changed, 12 insertions(+), 8 deletions(-)

diff --git a/target/arm/internals.h b/target/arm/internals.h
index f8b22d3ab0b..e97f5c3d47e 100644
--- a/target/arm/internals.h
+++ b/target/arm/internals.h
@@ -1123,7 +1123,7 @@ typedef struct V8M_SAttributes {
 
 void v8m_security_lookup(CPUARMState *env, uint32_t address,
                          MMUAccessType access_type, ARMMMUIdx mmu_idx,
-                         V8M_SAttributes *sattrs);
+                         bool secure, V8M_SAttributes *sattrs);
 
 /* Cacheability and shareability attributes for a memory access */
 typedef struct ARMCacheAttrs {
diff --git a/target/arm/m_helper.c b/target/arm/m_helper.c
index 01263990dc3..45fbf195590 100644
--- a/target/arm/m_helper.c
+++ b/target/arm/m_helper.c
@@ -689,7 +689,8 @@ static bool arm_v7m_load_vector(ARMCPU *cpu, int exc, bool targets_secure,
     if (arm_feature(env, ARM_FEATURE_M_SECURITY)) {
         V8M_SAttributes sattrs = {};
 
-        v8m_security_lookup(env, addr, MMU_DATA_LOAD, mmu_idx, &sattrs);
+        v8m_security_lookup(env, addr, MMU_DATA_LOAD, mmu_idx,
+                            targets_secure, &sattrs);
         if (sattrs.ns) {
             attrs.secure = false;
         } else if (!targets_secure) {
@@ -2002,7 +2003,8 @@ static bool v7m_read_half_insn(ARMCPU *cpu, ARMMMUIdx mmu_idx,
     ARMMMUFaultInfo fi = {};
     MemTxResult txres;
 
-    v8m_security_lookup(env, addr, MMU_INST_FETCH, mmu_idx, &sattrs);
+    v8m_security_lookup(env, addr, MMU_INST_FETCH, mmu_idx,
+                        regime_is_secure(env, mmu_idx), &sattrs);
     if (!sattrs.nsc || sattrs.ns) {
         /*
          * This must be the second half of the insn, and it straddles a
@@ -2826,7 +2828,8 @@ uint32_t HELPER(v7m_tt)(CPUARMState *env, uint32_t addr, uint32_t op)
     }
 
     if (env->v7m.secure) {
-        v8m_security_lookup(env, addr, MMU_DATA_LOAD, mmu_idx, &sattrs);
+        v8m_security_lookup(env, addr, MMU_DATA_LOAD, mmu_idx,
+                            targetsec, &sattrs);
         nsr = sattrs.ns && r;
         nsrw = sattrs.ns && rw;
     } else {
diff --git a/target/arm/ptw.c b/target/arm/ptw.c
index bb3c709f8f5..74d2f63359f 100644
--- a/target/arm/ptw.c
+++ b/target/arm/ptw.c
@@ -1857,8 +1857,8 @@ static bool v8m_is_sau_exempt(CPUARMState *env,
 }
 
 void v8m_security_lookup(CPUARMState *env, uint32_t address,
-                                MMUAccessType access_type, ARMMMUIdx mmu_idx,
-                                V8M_SAttributes *sattrs)
+                         MMUAccessType access_type, ARMMMUIdx mmu_idx,
+                         bool is_secure, V8M_SAttributes *sattrs)
 {
     /*
      * Look up the security attributes for this address. Compare the
@@ -1886,7 +1886,7 @@ void v8m_security_lookup(CPUARMState *env, uint32_t address,
     }
 
     if (idau_exempt || v8m_is_sau_exempt(env, address, access_type)) {
-        sattrs->ns = !regime_is_secure(env, mmu_idx);
+        sattrs->ns = !is_secure;
         return;
     }
 
@@ -1975,7 +1975,8 @@ static bool get_phys_addr_pmsav8(CPUARMState *env, uint32_t address,
     bool ret;
 
     if (arm_feature(env, ARM_FEATURE_M_SECURITY)) {
-        v8m_security_lookup(env, address, access_type, mmu_idx, &sattrs);
+        v8m_security_lookup(env, address, access_type, mmu_idx,
+                            secure, &sattrs);
         if (access_type == MMU_INST_FETCH) {
             /*
              * Instruction fetches always use the MMU bank and the
-- 
2.25.1