diff mbox series

[RFC,v5,09/22] target/arm: Handle PSTATE.ALLINT on taking an exception

Message ID 20240229131039.1868904-10-ruanjinjie@huawei.com (mailing list archive)
State New, archived
Headers show
Series target/arm: Implement FEAT_NMI and FEAT_GICv3_NMI | expand

Commit Message

Jinjie Ruan Feb. 29, 2024, 1:10 p.m. UTC 
Set or clear PSTATE.ALLINT on taking an exception to ELx according to the
SCTLR_ELx.SPINTMASK bit.

Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
v3:
- Add Reviewed-by.
---
 target/arm/helper.c | 9 +++++++++
 1 file changed, 9 insertions(+)
diff mbox series

Patch

diff --git a/target/arm/helper.c b/target/arm/helper.c
index ac44498537..b796dbdf21 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -11539,6 +11539,15 @@  static void arm_cpu_do_interrupt_aarch64(CPUState *cs)
         }
     }
 
+    if (cpu_isar_feature(aa64_nmi, cpu) &&
+        (env->cp15.sctlr_el[new_el] & SCTLR_NMI)) {
+        if (!(env->cp15.sctlr_el[new_el] & SCTLR_SPINTMASK)) {
+            new_mode |= PSTATE_ALLINT;
+        } else {
+            new_mode &= ~PSTATE_ALLINT;
+        }
+    }
+
     pstate_write(env, PSTATE_DAIF | new_mode);
     env->aarch64 = true;
     aarch64_restore_sp(env, new_el);