/* SPDX-License-Identifier: GPL-2.0 */
#ifdef CONFIG_MMU
#include <linux/list.h>
#include <linux/vmalloc.h>
#include <linux/pgtable.h>
/* the upper-most page table pointer */
extern pmd_t *top_pmd;
extern int icache_size;
/*
* 0 xffff8000 to 0 xffffffff is reserved for any ARM architecture
* specific hacks for copying pages efficiently , while 0 xffff4000
* is reserved for VIPT aliasing flushing by generic code .
*
* Note that we don ' t allow VIPT aliasing caches with SMP .
*/
#define COPYPAGE_MINICACHE 0 xffff8000
#define COPYPAGE_V6_FROM 0 xffff8000
#define COPYPAGE_V6_TO 0 xffffc000
/* PFN alias flushing, for VIPT caches */
#define FLUSH_ALIAS_START 0 xffff4000
static inline void set_top_pte(unsigned long va, pte_t pte)
{
pte_t *ptep = pte_offset_kernel(top_pmd, va);
set_pte_ext(ptep, pte, 0 );
local_flush_tlb_kernel_page(va);
}
static inline pte_t get_top_pte(unsigned long va)
{
pte_t *ptep = pte_offset_kernel(top_pmd, va);
return *ptep;
}
struct mem_type {
pteval_t prot_pte;
pteval_t prot_pte_s2;
pmdval_t prot_l1;
pmdval_t prot_sect;
unsigned int domain;
};
const struct mem_type *get_mem_type(unsigned int type);
void __flush_dcache_folio(struct address_space *mapping, struct folio *folio);
/*
* ARM specific vm_struct - > flags bits .
*/
/* (super)section-mapped I/O regions used by ioremap()/iounmap() */
#define VM_ARM_SECTION_MAPPING 0 x80000000
/* permanent static mappings from iotable_init() */
#define VM_ARM_STATIC_MAPPING 0 x40000000
/* empty mapping */
#define VM_ARM_EMPTY_MAPPING 0 x20000000
/* mapping type (attributes) for permanent static mappings */
#define VM_ARM_MTYPE(mt) ((mt) << 20 )
#define VM_ARM_MTYPE_MASK (0 x1f << 20 )
struct static_vm {
struct vm_struct vm;
struct list_head list;
};
extern struct list_head static_vmlist;
extern struct static_vm *find_static_vm_vaddr(void *vaddr);
extern __init void add_static_vm_early(struct static_vm *svm);
#endif
#ifdef CONFIG_ZONE_DMA
extern phys_addr_t arm_dma_limit;
extern unsigned long arm_dma_pfn_limit;
#else
#define arm_dma_limit ((phys_addr_t)~0 )
#define arm_dma_pfn_limit (~0 ul >> PAGE_SHIFT)
#endif
extern phys_addr_t arm_lowmem_limit;
void __init bootmem_init(void );
void arm_mm_memblock_reserve(void );
#ifdef CONFIG_CMA_AREAS
void dma_contiguous_remap(void );
#else
static inline void dma_contiguous_remap(void ) { }
#endif
unsigned long __clear_cr(unsigned long mask);
Messung V0.5 in Prozent C=91 H=100 G=95
¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet am 2026-09-28)
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