diff --git a/docs/system/arm/emulation.rst b/docs/system/arm/emulation.rst
index 0acac6347c56..81104080003a 100644
--- a/docs/system/arm/emulation.rst
+++ b/docs/system/arm/emulation.rst
@@ -42,6 +42,7 @@ the following architecture extensions:
 - FEAT_PMULL (PMULL, PMULL2 instructions)
 - FEAT_PMUv3p1 (PMU Extensions v3.1)
 - FEAT_PMUv3p4 (PMU Extensions v3.4)
+- FEAT_RAS (Reliability, availability, and serviceability)
 - FEAT_RDM (Advanced SIMD rounding double multiply accumulate instructions)
 - FEAT_RNG (Random number generator)
 - FEAT_SB (Speculation Barrier)
diff --git a/target/arm/cpu64.c b/target/arm/cpu64.c
index 88d3cef93e83..35881c74b207 100644
--- a/target/arm/cpu64.c
+++ b/target/arm/cpu64.c
@@ -744,6 +744,7 @@ static void aarch64_max_initfn(Object *obj)
     t = cpu->isar.id_aa64pfr0;
     t = FIELD_DP64(t, ID_AA64PFR0, FP, 1);        /* FEAT_FP16 */
     t = FIELD_DP64(t, ID_AA64PFR0, ADVSIMD, 1);   /* FEAT_FP16 */
+    t = FIELD_DP64(t, ID_AA64PFR0, RAS, 1);       /* FEAT_RAS */
     t = FIELD_DP64(t, ID_AA64PFR0, SVE, 1);
     t = FIELD_DP64(t, ID_AA64PFR0, SEL2, 1);      /* FEAT_SEL2 */
     t = FIELD_DP64(t, ID_AA64PFR0, DIT, 1);       /* FEAT_DIT */
diff --git a/target/arm/cpu_tcg.c b/target/arm/cpu_tcg.c
index 337598e94906..c5cf7efe95c0 100644
--- a/target/arm/cpu_tcg.c
+++ b/target/arm/cpu_tcg.c
@@ -69,6 +69,7 @@ void aa32_max_features(ARMCPU *cpu)
 
     t = cpu->isar.id_pfr0;
     t = FIELD_DP32(t, ID_PFR0, DIT, 1);           /* FEAT_DIT */
+    t = FIELD_DP32(t, ID_PFR0, RAS, 1);           /* FEAT_RAS */
     cpu->isar.id_pfr0 = t;
 
     t = cpu->isar.id_pfr2;