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Allow ARMv8 SCR.SMD updates 

Updated scr_write to always allow updates to the SCR.SMD bit on ARMv8
regardless of whether virtualization (EL2) is enabled or not.

Signed-off-by: Greg Bellows <greg.bellows@linaro.org>
Message-id: 1429888797-4378-1-git-send-email-greg.bellows@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Greg Bellows 2015-04-26 16:49:26 +01:00 committed by Peter Maydell
parent 3d5c84ff21
commit 4eb2764083
1 changed files with 3 additions and 1 deletions
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4
target-arm/helper.c
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@ -816,8 +816,10 @@ static void scr_write(CPUARMState *env, const ARMCPRegInfo *ri, uint64_t value)
* supported if EL2 exists. The bit is UNK/SBZP when * supported if EL2 exists. The bit is UNK/SBZP when
* EL2 is unavailable. In QEMU ARMv7, we force it to always zero * EL2 is unavailable. In QEMU ARMv7, we force it to always zero
* when EL2 is unavailable. * when EL2 is unavailable.
* On ARMv8, this bit is always available.
*/ */
if (arm_feature(env, ARM_FEATURE_V7)) { if (arm_feature(env, ARM_FEATURE_V7) &&
!arm_feature(env, ARM_FEATURE_V8)) {
valid_mask &= ~SCR_SMD; valid_mask &= ~SCR_SMD;
} }
} }