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x86: account overlapped mappings in max_pfn_mapped

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When end_pfn is not aligned to 2MB (or 1GB) then the kernel might
map more memory than end_pfn. Account this in max_pfn_mapped.

Signed-off-by: Andi Kleen <ak@suse.de>
Cc: andreas.herrmann3@amd.com
Cc: mingo@elte.hu
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Andi Kleen 2008-03-12 03:53:28 +01:00 • committed by Ingo Molnar
commit cc61503219
4 changed files with 27 additions and 14 deletions
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3
include/asm-x86/page_64.h
View file

@ -80,6 +80,9 @@ typedef struct { pteval_t pte; } pte_t;
#define vmemmap ((struct page *)VMEMMAP_START)
extern unsigned long init_memory_mapping(unsigned long start,
unsigned long end);
#endif /* !__ASSEMBLY__ */
#ifdef CONFIG_FLATMEM

2
include/asm-x86/proto.h
View file

@ -7,8 +7,6 @@
extern void early_idt_handler(void);
extern void init_memory_mapping(unsigned long start, unsigned long end);
extern void system_call(void);
extern void syscall_init(void);