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116e50d647
We don't currently validate that we exit streaming mode and clear ZA when we enter a signal handler. Add simple checks for this in the SSVE and ZA tests. Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20241106-arm64-fpmr-signal-test-v1-1-31fa34ce58fe@kernel.org [catalin.marinas@arm.com: Use %lx in fprintf() as uint64_t seems to be unsigned long in glibc] Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
34 lines
521 B
C
34 lines
521 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2024 ARM Limited
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*
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* Common helper functions for SVE and SME functionality.
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*/
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#ifndef __SVE_HELPERS_H__
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#define __SVE_HELPERS_H__
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#include <stdbool.h>
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#define VLS_USE_SVE false
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#define VLS_USE_SME true
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extern unsigned int vls[];
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extern unsigned int nvls;
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int sve_fill_vls(bool use_sme, int min_vls);
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static inline uint64_t get_svcr(void)
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{
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uint64_t val;
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asm volatile (
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"mrs %0, S3_3_C4_C2_2\n"
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: "=r"(val)
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:
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: "cc");
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return val;
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}
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#endif
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