target/arm: Enable FEAT_AIE for -cpu max

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20251014195017.421681-8-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

docs/system/arm/emulation.rst

@@ -21,6 +21,7 @@ the following architecture extensions:
 - FEAT_AdvSIMD (Advanced SIMD Extension)
 - FEAT_AES (AESD and AESE instructions)
 - FEAT_AFP (Alternate floating-point behavior)
+- FEAT_AIE (Memory Attribute Index Enhancement)
 - FEAT_Armv9_Crypto (Armv9 Cryptographic Extension)
 - FEAT_ASID16 (16 bit ASID)
 - FEAT_ATS1A (Address Translation operations that ignore stage 1 permissions)

target/arm/tcg/cpu64.c

@@ -1331,6 +1331,7 @@ void aarch64_max_tcg_initfn(Object *obj)
     t = FIELD_DP64(t, ID_AA64MMFR3, SPEC_FPACC, 1); /* FEAT_FPACC_SPEC */
     t = FIELD_DP64(t, ID_AA64MMFR3, S1PIE, 1);    /* FEAT_S1PIE */
     t = FIELD_DP64(t, ID_AA64MMFR3, S2PIE, 1);    /* FEAT_S2PIE */
+    t = FIELD_DP64(t, ID_AA64MMFR3, AIE, 1);      /* FEAT_AIE */
     SET_IDREG(isar, ID_AA64MMFR3, t);
 
     t = GET_IDREG(isar, ID_AA64ZFR0);