/* SPDX-License-Identifier: GPL-2.0-only *//* * Copyright (C) 2017 Linaro Ltd. <ard.biesheuvel@linaro.org> */ #ifndef __ASM_SIMD_H#define __ASM_SIMD_H #include <linux/cleanup.h>#include <linux/compiler.h>#include <linux/irqflags.h>#include <linux/percpu.h>#include <linux/preempt.h>#include <linux/types.h> #include <asm/neon.h> #ifdef CONFIG_KERNEL_MODE_NEON /* * may_use_simd - whether it is allowable at this time to issue SIMD *                instructions or access the SIMD register file * * Callers must not assume that the result remains true beyond the next * preempt_enable() or return from softirq context. */static __must_check inline bool may_use_simd(void){	/*	 * We must make sure that the SVE has been initialized properly	 * before using the SIMD in kernel.	 */	return !WARN_ON(!system_capabilities_finalized()) &&	       system_supports_fpsimd() &&	       !in_hardirq() && !in_nmi();} #else /* ! CONFIG_KERNEL_MODE_NEON */ static __must_check inline bool may_use_simd(void) {	return false;} #endif /* ! CONFIG_KERNEL_MODE_NEON */ DEFINE_LOCK_GUARD_1(ksimd,		    struct user_fpsimd_state,		    kernel_neon_begin(_T->lock),		    kernel_neon_end(_T->lock)) #define __scoped_ksimd(_label)					\	for (struct user_fpsimd_state __uninitialized __st;	\	     true; ({ goto _label; }))				\		if (0) {					\_label:			break;					\		} else scoped_guard(ksimd, &__st) #define scoped_ksimd()	__scoped_ksimd(__UNIQUE_ID(label)) #endif