haiku/headers/private/kernel/arch/x86/arch_vm_translation_map.h

/*
** Copyright 2003, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
** Distributed under the terms of the OpenBeOS License.
*/
#ifndef _KERNEL_ARCH_x86_VM_TRANSLATION_MAP_H
#define _KERNEL_ARCH_x86_VM_TRANSLATION_MAP_H


#include <arch/vm_translation_map.h>


#define PAGE_INVALIDATE_CACHE_SIZE 64

struct page_directory_entry;

typedef struct vm_translation_map_arch_info {
	struct page_directory_entry *pgdir_virt;
	struct page_directory_entry *pgdir_phys;
	vint32 active_on_cpus;
		// mask indicating on which CPUs the map is currently used
	int num_invalidate_pages;
	addr_t pages_to_invalidate[PAGE_INVALIDATE_CACHE_SIZE];
} vm_translation_map_arch_info;


// quick function to return the physical pgdir of a mapping, needed for a context switch
#ifdef __cplusplus
extern "C"
#endif
void *i386_translation_map_get_pgdir(vm_translation_map *map);

#endif /* _KERNEL_ARCH_x86_VM_TRANSLATION_MAP_H */