1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 2c8dcdb9cSYinghai Lu #ifndef _ASM_X86_INIT_H 3c8dcdb9cSYinghai Lu #define _ASM_X86_INIT_H 44fcb2083SPekka Enberg 5d2a285d6SHou Wenlong #define __head __section(".head.text") 6d2a285d6SHou Wenlong 7aece2785SYinghai Lu struct x86_mapping_info { 8aece2785SYinghai Lu void *(*alloc_pgt_page)(void *); /* allocate buf for page table */ 9*d88e7b3eSKirill A. Shutemov void (*free_pgt_page)(void *, void *); /* free buf for page table */ 10aece2785SYinghai Lu void *context; /* context for alloc_pgt_page */ 1166aad4fdSXunlei Pang unsigned long page_flag; /* page flag for PMD or PUD entry */ 12e4630fddSRafael J. Wysocki unsigned long offset; /* ident mapping offset */ 1366aad4fdSXunlei Pang bool direct_gbpages; /* PUD level 1GB page support */ 14bba4ed01STom Lendacky unsigned long kernpg_flag; /* kernel pagetable flag override */ 15aece2785SYinghai Lu }; 16aece2785SYinghai Lu 17aece2785SYinghai Lu int kernel_ident_mapping_init(struct x86_mapping_info *info, pgd_t *pgd_page, 18e4630fddSRafael J. Wysocki unsigned long pstart, unsigned long pend); 194fcb2083SPekka Enberg 20*d88e7b3eSKirill A. Shutemov void kernel_ident_mapping_free(struct x86_mapping_info *info, pgd_t *pgd); 21*d88e7b3eSKirill A. Shutemov 22c8dcdb9cSYinghai Lu #endif /* _ASM_X86_INIT_H */ 23