1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_X86_PAGE_DEFS_H 3 #define _ASM_X86_PAGE_DEFS_H 4 5 #include <linux/const.h> 6 #include <linux/types.h> 7 #include <linux/mem_encrypt.h> 8 9 #include <vdso/page.h> 10 11 #define __VIRTUAL_MASK ((1UL << __VIRTUAL_MASK_SHIFT) - 1) 12 13 /* Cast P*D_MASK to a signed type so that it is sign-extended if 14 virtual addresses are 32-bits but physical addresses are larger 15 (ie, 32-bit PAE). */ 16 #define PHYSICAL_PAGE_MASK (((signed long)PAGE_MASK) & __PHYSICAL_MASK) 17 #define PHYSICAL_PMD_PAGE_MASK (((signed long)PMD_MASK) & __PHYSICAL_MASK) 18 #define PHYSICAL_PUD_PAGE_MASK (((signed long)PUD_MASK) & __PHYSICAL_MASK) 19 20 #define HPAGE_SHIFT PMD_SHIFT 21 #define HPAGE_SIZE (_AC(1,UL) << HPAGE_SHIFT) 22 #define HPAGE_MASK (~(HPAGE_SIZE - 1)) 23 #define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT) 24 25 #define HUGE_MAX_HSTATE 2 26 27 #define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET) 28 29 #define VM_DATA_DEFAULT_FLAGS VM_DATA_FLAGS_TSK_EXEC 30 31 /* Physical address where kernel should be loaded. */ 32 #define LOAD_PHYSICAL_ADDR __ALIGN_KERNEL_MASK(CONFIG_PHYSICAL_START, CONFIG_PHYSICAL_ALIGN - 1) 33 34 #define __START_KERNEL (__START_KERNEL_map + LOAD_PHYSICAL_ADDR) 35 36 #ifdef CONFIG_X86_64 37 #include <asm/page_64_types.h> 38 #define IOREMAP_MAX_ORDER (PUD_SHIFT) 39 #else 40 #include <asm/page_32_types.h> 41 #define IOREMAP_MAX_ORDER (PMD_SHIFT) 42 #endif /* CONFIG_X86_64 */ 43 44 #ifndef __ASSEMBLER__ 45 46 #ifdef CONFIG_DYNAMIC_PHYSICAL_MASK 47 extern phys_addr_t physical_mask; 48 #define __PHYSICAL_MASK physical_mask 49 #else 50 #define __PHYSICAL_MASK ((phys_addr_t)((1ULL << __PHYSICAL_MASK_SHIFT) - 1)) 51 #endif 52 53 extern int devmem_is_allowed(unsigned long pagenr); 54 55 extern unsigned long max_low_pfn_mapped; 56 extern unsigned long max_pfn_mapped; 57 get_max_mapped(void)58static inline phys_addr_t get_max_mapped(void) 59 { 60 return (phys_addr_t)max_pfn_mapped << PAGE_SHIFT; 61 } 62 63 bool pfn_range_is_mapped(unsigned long start_pfn, unsigned long end_pfn); 64 65 extern void initmem_init(void); 66 67 #endif /* !__ASSEMBLER__ */ 68 69 #endif /* _ASM_X86_PAGE_DEFS_H */ 70