Merge 4.4.160 into android-4.4-p

[sagit-ice-cold/kernel_xiaomi_msm8998.git] / arch / arm64 / include / asm / cpufeature.h

diff --git a/arch/arm64/include/asm/cpufeature.h b/arch/arm64/include/asm/cpufeature.h
index 2c6497a..7ceae35 100644 (file)
--- a/arch/arm64/include/asm/cpufeature.h
+++ b/arch/arm64/include/asm/cpufeature.h
@@ -35,6 +35,7 @@
 #define ARM64_ALT_PAN_NOT_UAO                  10
 #define ARM64_HAS_VIRT_HOST_EXTN               11
 #define ARM64_WORKAROUND_CAVIUM_27456          12
+#define ARM64_HAS_32BIT_EL0                    13
 #define ARM64_UNMAP_KERNEL_AT_EL0              23
 
 #define ARM64_NCAPS                            24
@@ -185,6 +186,11 @@ static inline bool cpu_supports_mixed_endian_el0(void)
        return id_aa64mmfr0_mixed_endian_el0(read_cpuid(SYS_ID_AA64MMFR0_EL1));
 }
 
+static inline bool system_supports_32bit_el0(void)
+{
+       return cpus_have_cap(ARM64_HAS_32BIT_EL0);
+}
+
 static inline bool system_supports_mixed_endian_el0(void)
 {
        return id_aa64mmfr0_mixed_endian_el0(read_system_reg(SYS_ID_AA64MMFR0_EL1));