arm64: KVM: Fix wrong use of the CPSR MODE mask for 32bit guests

The values of CPSR MODE mask are different between aarch32 and aarch64.
It should use the right one according to the execution state.

Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>

diff --git a/arch/arm64/include/asm/kvm_emulate.h b/arch/arm64/include/asm/kvm_emulate.h
index 3066328cd86b69a91274e0cb841059b428666140..779a5872a2c5fb5f9aa9b49af6f77391aefc2336 100644 (file)
--- a/arch/arm64/include/asm/kvm_emulate.h
+++ b/arch/arm64/include/asm/kvm_emulate.h
@@ -127,10 +127,14 @@ static inline unsigned long *vcpu_spsr(const struct kvm_vcpu *vcpu)
 
 static inline bool vcpu_mode_priv(const struct kvm_vcpu *vcpu)
 {
-       u32 mode = *vcpu_cpsr(vcpu) & PSR_MODE_MASK;
+       u32 mode;
 
-       if (vcpu_mode_is_32bit(vcpu))
+       if (vcpu_mode_is_32bit(vcpu)) {
+               mode = *vcpu_cpsr(vcpu) & COMPAT_PSR_MODE_MASK;
                return mode > COMPAT_PSR_MODE_USR;
+       }
+
+       mode = *vcpu_cpsr(vcpu) & PSR_MODE_MASK;
 
        return mode != PSR_MODE_EL0t;
 }