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Diffstat (limited to 'arch/arm64/include/asm/cpufeature.h')
-rw-r--r--arch/arm64/include/asm/cpufeature.h29
1 files changed, 0 insertions, 29 deletions
diff --git a/arch/arm64/include/asm/cpufeature.h b/arch/arm64/include/asm/cpufeature.h
index 55bc1f073bfb..1717ba1db35d 100644
--- a/arch/arm64/include/asm/cpufeature.h
+++ b/arch/arm64/include/asm/cpufeature.h
@@ -11,9 +11,7 @@
#include <asm/cpucaps.h>
#include <asm/cputype.h>
-#include <asm/fpsimd.h>
#include <asm/hwcap.h>
-#include <asm/sigcontext.h>
#include <asm/sysreg.h>
/*
@@ -510,33 +508,6 @@ static inline bool system_supports_sve(void)
cpus_have_const_cap(ARM64_SVE);
}
-/*
- * Read the pseudo-ZCR used by cpufeatures to identify the supported SVE
- * vector length.
- *
- * Use only if SVE is present.
- * This function clobbers the SVE vector length.
- */
-static inline u64 read_zcr_features(void)
-{
- u64 zcr;
- unsigned int vq_max;
-
- /*
- * Set the maximum possible VL, and write zeroes to all other
- * bits to see if they stick.
- */
- sve_kernel_enable(NULL);
- write_sysreg_s(ZCR_ELx_LEN_MASK, SYS_ZCR_EL1);
-
- zcr = read_sysreg_s(SYS_ZCR_EL1);
- zcr &= ~(u64)ZCR_ELx_LEN_MASK; /* find sticky 1s outside LEN field */
- vq_max = sve_vq_from_vl(sve_get_vl());
- zcr |= vq_max - 1; /* set LEN field to maximum effective value */
-
- return zcr;
-}
-
#define ARM64_SSBD_UNKNOWN -1
#define ARM64_SSBD_FORCE_DISABLE 0
#define ARM64_SSBD_KERNEL 1