arch/x86/include/asm/e820/api.h
Source file repositories/reference/linux-study-clean/arch/x86/include/asm/e820/api.h
File Facts
- System
- Linux kernel
- Corpus path
arch/x86/include/asm/e820/api.h- Extension
.h- Size
- 1959 bytes
- Lines
- 55
- Domain
- Architecture Layer
- Bucket
- arch/x86
- Inferred role
- Architecture Layer: implementation source
- Status
- source implementation candidate
Why This File Exists
CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.
- CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.
- Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
asm/e820/types.h
Detected Declarations
function is_ISA_range
Annotated Snippet
#ifndef _ASM_E820_API_H
#define _ASM_E820_API_H
#include <asm/e820/types.h>
extern struct e820_table *e820_table;
extern struct e820_table *e820_table_kexec;
extern struct e820_table *e820_table_firmware;
extern unsigned long pci_mem_start;
extern bool e820__mapped_raw_any(u64 start, u64 end, enum e820_type type);
extern bool e820__mapped_any(u64 start, u64 end, enum e820_type type);
extern bool e820__mapped_all(u64 start, u64 end, enum e820_type type);
extern void e820__range_add (u64 start, u64 size, enum e820_type type);
extern u64 e820__range_update(u64 start, u64 size, enum e820_type old_type, enum e820_type new_type);
extern void e820__range_remove(u64 start, u64 size, enum e820_type filter_type);
extern u64 e820__range_update_table(struct e820_table *t, u64 start, u64 size, enum e820_type old_type, enum e820_type new_type);
extern int e820__update_table(struct e820_table *table);
extern void e820__update_table_print(void);
extern unsigned long e820__end_of_ram_pfn(void);
extern unsigned long e820__end_of_low_ram_pfn(void);
extern u64 e820__memblock_alloc_reserved(u64 size, u64 align);
extern void e820__memblock_setup(void);
extern void e820__finish_early_params(void);
extern void e820__reserve_resources(void);
extern void e820__reserve_resources_late(void);
extern void e820__memory_setup(void);
extern void e820__memory_setup_extended(u64 phys_addr, u32 data_len);
extern char *e820__memory_setup_default(void);
extern void e820__setup_pci_gap(void);
extern void e820__reallocate_tables(void);
extern void e820__register_nosave_regions(unsigned long limit_pfn);
extern int e820__get_entry_type(u64 start, u64 end);
/*
* Returns true iff the specified range [start,end) is completely contained inside
* the ISA region.
*/
static inline bool is_ISA_range(u64 start, u64 end)
{
return start >= ISA_START_ADDRESS && end <= ISA_END_ADDRESS;
}
#endif /* _ASM_E820_API_H */
Annotation
- Immediate include surface: `asm/e820/types.h`.
- Detected declarations: `function is_ISA_range`.
- Atlas domain: Architecture Layer / arch/x86.
- Implementation status: source implementation candidate.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.