X-Git-Url: http://git.osdn.net/view?a=blobdiff_plain;f=arch%2Farm64%2Finclude%2Fasm%2Fcpufeature.h;fp=arch%2Farm64%2Finclude%2Fasm%2Fcpufeature.h;h=d00e27eebe9797b3c68d58e560b7a96935a6afdc;hb=f25fed271059c7a4afe6db46f085e80e2c4db073;hp=6e993094996e9958b7dc0082fccf17591dc4219c;hpb=43819b656c1e23a21049d20ff1be4c7d97923c22;p=sagit-ice-cold%2Fkernel_xiaomi_msm8998.git

diff --git a/arch/arm64/include/asm/cpufeature.h b/arch/arm64/include/asm/cpufeature.h
index 6e993094996e..d00e27eebe97 100644
--- a/arch/arm64/include/asm/cpufeature.h
+++ b/arch/arm64/include/asm/cpufeature.h
@@ -38,7 +38,8 @@
 #define ARM64_HAS_VIRT_HOST_EXTN		12
 #define ARM64_HARDEN_BRANCH_PREDICTOR		13
 #define ARM64_UNMAP_KERNEL_AT_EL0		14
-#define ARM64_NCAPS				15
+#define ARM64_HAS_32BIT_EL0			15
+#define ARM64_NCAPS				16
 
 #ifndef __ASSEMBLY__
 
@@ -190,6 +191,11 @@ 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));