init.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _ASM_X86_INIT_H
 3#define _ASM_X86_INIT_H
 4
 5struct x86_mapping_info {
 6	void *(*alloc_pgt_page)(void *); /* allocate buf for page table */
 7	void (*free_pgt_page)(void *, void *); /* free buf for page table */
 8	void *context;			 /* context for alloc_pgt_page */
 9	unsigned long page_flag;	 /* page flag for PMD or PUD entry */
10	unsigned long offset;		 /* ident mapping offset */
11	bool direct_gbpages;		 /* PUD level 1GB page support */
12	unsigned long kernpg_flag;	 /* kernel pagetable flag override */
13};
14
15int kernel_ident_mapping_init(struct x86_mapping_info *info, pgd_t *pgd_page,
16				unsigned long pstart, unsigned long pend);
17
18void kernel_ident_mapping_free(struct x86_mapping_info *info, pgd_t *pgd);
19
20#endif /* _ASM_X86_INIT_H */