linux/arch/x86/include/asm/io_bitmap.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_X86_IOBITMAP_H
#define _ASM_X86_IOBITMAP_H

#include <linux/refcount.h>
#include <asm/processor.h>

struct io_bitmap { … };

struct task_struct;

#ifdef CONFIG_X86_IOPL_IOPERM
void io_bitmap_share(struct task_struct *tsk);
void io_bitmap_exit(struct task_struct *tsk);

static inline void native_tss_invalidate_io_bitmap(void)
{ … }

void native_tss_update_io_bitmap(void);

#ifdef CONFIG_PARAVIRT_XXL
#include <asm/paravirt.h>
#else
#define tss_update_io_bitmap …
#define tss_invalidate_io_bitmap …
#endif

#else
static inline void io_bitmap_share(struct task_struct *tsk) { }
static inline void io_bitmap_exit(struct task_struct *tsk) { }
static inline void tss_update_io_bitmap(void) { }
#endif

#endif