target/arm: Remove redundant mmu_idx lookup

We already have the full ARMMMUIdx as computed from the
function parameter.

For the purpose of regime_has_2_ranges, we can ignore any
difference between AccType_Normal and AccType_Unpriv, which
would be the only difference between the passed mmu_idx
and arm_mmu_idx_el.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Tested-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Message-id: 20201008162155.161886-2-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

diff --git a/target/arm/mte_helper.c b/target/arm/mte_helper.c
index 5615c67..734cc5c 100644 (file)
--- a/target/arm/mte_helper.c
+++ b/target/arm/mte_helper.c
@@ -563,8 +563,7 @@ static void mte_check_fail(CPUARMState *env, uint32_t desc,
 
     case 2:
         /* Tag check fail causes asynchronous flag set.  */
-        mmu_idx = arm_mmu_idx_el(env, el);
-        if (regime_has_2_ranges(mmu_idx)) {
+        if (regime_has_2_ranges(arm_mmu_idx)) {
             select = extract64(dirty_ptr, 55, 1);
         } else {
             select = 0;