From: Richard Henderson <richard.henderson@linaro.org>
Date: Fri, 26 Sep 2025 00:11:33 +0000 (-0700)
Subject: target/arm: Implement APPSAA
X-Git-Tag: v10.2.0-rc1~74^2~1
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=663f9c253eb31d4deacacf5b9de70bfa4674371f;p=thirdparty%2Fqemu.git

target/arm: Implement APPSAA

This bit allows all spaces to access memory above PPS.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-id: 20250926001134.295547-10-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---

diff --git a/target/arm/ptw.c b/target/arm/ptw.c
index 236c3a9569..e03657f309 100644
--- a/target/arm/ptw.c
+++ b/target/arm/ptw.c
@@ -408,9 +408,10 @@ static bool granule_protection_check(CPUARMState *env, uint64_t paddress,
      * GPC Priority 3: Secure, Realm or Root address exceeds PPS.
      * R_CPDSB: A NonSecure physical address input exceeding PPS
      * does not experience any fault.
+     * R_PBPSH: Other address spaces have fault suppressed by APPSAA.
      */
     if (paddress & ~pps_mask) {
-        if (pspace == ARMSS_NonSecure) {
+        if (pspace == ARMSS_NonSecure || FIELD_EX64(gpccr, GPCCR, APPSAA)) {
             return true;
         }
         goto fault_fail;