[PATCH v6 36/41] target/arm: Update arm_cpu_do_interrupt_aarch64 for VHE

[Richard Henderson]

When VHE is enabled, the exception level below EL2 is not EL1,
but EL0, and so to identify the entry vector offset for exceptions
targeting EL2 we need to look at the width of EL0, not of EL1.

Reviewed-by: Peter Maydell <address@hidden>
Signed-off-by: Richard Henderson <address@hidden>
---
 target/arm/helper.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/target/arm/helper.c b/target/arm/helper.c
index 576afd9c9e..70b10428c5 100644
--- a/target/arm/helper.c
+++ b/target/arm/helper.c
@@ -9026,14 +9026,19 @@ static void arm_cpu_do_interrupt_aarch64(CPUState *cs)
          * immediately lower than the target level is using AArch32 or AArch64
          */
         bool is_aa64;
+        uint64_t hcr;
 
         switch (new_el) {
         case 3:
             is_aa64 = (env->cp15.scr_el3 & SCR_RW) != 0;
             break;
         case 2:
-            is_aa64 = (env->cp15.hcr_el2 & HCR_RW) != 0;
-            break;
+            hcr = arm_hcr_el2_eff(env);
+            if ((hcr & (HCR_E2H | HCR_TGE)) != (HCR_E2H | HCR_TGE)) {
+                is_aa64 = (hcr & HCR_RW) != 0;
+                break;
+            }
+            /* fall through */
         case 1:
             is_aa64 = is_a64(env);
             break;
-- 
2.20.1