9848fb9683
Only used internally in the FPU core code. While at it, convert to the percpu accessors which verify preemption is disabled. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Borislav Petkov <bp@suse.de> Link: https://lkml.kernel.org/r/20211015011539.686806639@linutronix.de
60 lines
1.6 KiB
C
60 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 1994 Linus Torvalds
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*
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* Pentium III FXSR, SSE support
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* General FPU state handling cleanups
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* Gareth Hughes <gareth@valinux.com>, May 2000
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* x86-64 work by Andi Kleen 2002
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*/
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#ifndef _ASM_X86_FPU_INTERNAL_H
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#define _ASM_X86_FPU_INTERNAL_H
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#include <linux/compat.h>
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#include <linux/sched.h>
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#include <linux/slab.h>
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#include <linux/mm.h>
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#include <asm/user.h>
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#include <asm/fpu/api.h>
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#include <asm/fpu/xstate.h>
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#include <asm/fpu/xcr.h>
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#include <asm/cpufeature.h>
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#include <asm/trace/fpu.h>
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/*
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* High level FPU state handling functions:
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*/
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extern bool fpu__restore_sig(void __user *buf, int ia32_frame);
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extern void fpu__clear_user_states(struct fpu *fpu);
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extern int fpu__exception_code(struct fpu *fpu, int trap_nr);
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extern void fpu_sync_fpstate(struct fpu *fpu);
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/*
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* Boot time FPU initialization functions:
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*/
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extern void fpu__init_cpu(void);
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extern void fpu__init_system_xstate(void);
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extern void fpu__init_cpu_xstate(void);
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extern void fpu__init_system(struct cpuinfo_x86 *c);
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extern void fpu__init_check_bugs(void);
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extern void fpu__resume_cpu(void);
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extern union fpregs_state init_fpstate;
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extern void fpstate_init_user(union fpregs_state *state);
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#ifdef CONFIG_MATH_EMULATION
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extern void fpstate_init_soft(struct swregs_state *soft);
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#else
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static inline void fpstate_init_soft(struct swregs_state *soft) {}
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#endif
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extern void restore_fpregs_from_fpstate(union fpregs_state *fpstate, u64 mask);
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extern bool copy_fpstate_to_sigframe(void __user *buf, void __user *fp, int size);
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DECLARE_PER_CPU(struct fpu *, fpu_fpregs_owner_ctx);
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#endif /* _ASM_X86_FPU_INTERNAL_H */
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