From: Richard Henderson <richard.henderson@linaro.org>

These bits become writable with the ARMv8.3-PAuth extension.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190129143511.12311-1-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/helper.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/target/arm/helper.c b/target/arm/helper.c
index e6f69180ba0..d070879894c 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -1859,6 +1859,9 @@ static void scr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
     if (cpu_isar_feature(aa64_lor, cpu)) {
         valid_mask |= SCR_TLOR;
     }
+    if (cpu_isar_feature(aa64_pauth, cpu)) {
+        valid_mask |= SCR_API | SCR_APK;
+    }
 
     /* Clear all-context RES0 bits.  */
     value &= valid_mask;
@@ -4558,6 +4561,9 @@ static void hcr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
     if (cpu_isar_feature(aa64_lor, cpu)) {
         valid_mask |= HCR_TLOR;
     }
+    if (cpu_isar_feature(aa64_pauth, cpu)) {
+        valid_mask |= HCR_API | HCR_APK;
+    }
 
     /* Clear RES0 bits.  */
     value &= valid_mask;
-- 
2.20.1