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/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _ASM_X86_PAGE_DEFS_H #define _ASM_X86_PAGE_DEFS_H #include #include #include /* PAGE_SHIFT determines the page size */ #define PAGE_SHIFT 12 #define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT) #define PAGE_MASK (~(PAGE_SIZE-1)) #define PMD_PAGE_SIZE (_AC(1, UL) << PMD_SHIFT) #define PMD_PAGE_MASK (~(PMD_PAGE_SIZE-1)) #define PUD_PAGE_SIZE (_AC(1, UL) << PUD_SHIFT) #define PUD_PAGE_MASK (~(PUD_PAGE_SIZE-1)) #define __VIRTUAL_MASK ((1UL << __VIRTUAL_MASK_SHIFT) - 1) /* Cast *PAGE_MASK to a signed type so that it is sign-extended if virtual addresses are 32-bits but physical addresses are larger (ie, 32-bit PAE). */ #define PHYSICAL_PAGE_MASK (((signed long)PAGE_MASK) & __PHYSICAL_MASK) #define PHYSICAL_PMD_PAGE_MASK (((signed long)PMD_PAGE_MASK) & __PHYSICAL_MASK) #define PHYSICAL_PUD_PAGE_MASK (((signed long)PUD_PAGE_MASK) & __PHYSICAL_MASK) #define HPAGE_SHIFT PMD_SHIFT #define HPAGE_SIZE (_AC(1,UL) << HPAGE_SHIFT) #define HPAGE_MASK (~(HPAGE_SIZE - 1)) #define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT) #define HUGE_MAX_HSTATE 2 #define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET) #define VM_DATA_DEFAULT_FLAGS VM_DATA_FLAGS_TSK_EXEC #define __PHYSICAL_START ALIGN(CONFIG_PHYSICAL_START, \ CONFIG_PHYSICAL_ALIGN) #define __START_KERNEL (__START_KERNEL_map + __PHYSICAL_START) #ifdef CONFIG_X86_64 #include #define IOREMAP_MAX_ORDER (PUD_SHIFT) #else #include #define IOREMAP_MAX_ORDER (PMD_SHIFT) #endif /* CONFIG_X86_64 */ #ifndef __ASSEMBLY__ #ifdef CONFIG_DYNAMIC_PHYSICAL_MASK extern phys_addr_t physical_mask; #define __PHYSICAL_MASK physical_mask #else #define __PHYSICAL_MASK ((phys_addr_t)((1ULL << __PHYSICAL_MASK_SHIFT) - 1)) #endif extern int devmem_is_allowed(unsigned long pagenr); extern uns