linux/arch/x86/kernel/fpu/internal.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __X86_KERNEL_FPU_INTERNAL_H
#define __X86_KERNEL_FPU_INTERNAL_H

extern struct fpstate init_fpstate;

/* CPU feature check wrappers */
static __always_inline __pure bool use_xsave(void)
{ … }

static __always_inline __pure bool use_fxsr(void)
{ … }

#ifdef CONFIG_X86_DEBUG_FPU
#define WARN_ON_FPU(x) …
#else
#define WARN_ON_FPU …
#endif

/* Used in init.c */
extern void fpstate_init_user(struct fpstate *fpstate);
extern void fpstate_reset(struct fpu *fpu);

#endif