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[PATCH] x86_64: Introduce e820_all_mapped

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Introduce a e820_all_mapped() function which checks if the entire range
<start,end> is mapped with type.

This is done by moving the local start variable to the end of each
known-good region; if at the end of the function the start address is
still before end, there must be a part that's not of the correct type;
otherwise it's a good region.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Arjan van de Ven
2006-04-07 19:49:27 +02:00
committed by Linus Torvalds
parent eee5a9fa63
commit 952223683e
4 changed files with 68 additions and 0 deletions
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include/asm-x86_64/e820.h
+1
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@@ -48,6 +48,7 @@ extern unsigned long e820_end_of_ram(void);
extern void e820_reserve_resources(void);
extern void e820_print_map(char *who);
extern int e820_any_mapped(unsigned long start, unsigned long end, unsigned type);
extern int e820_all_mapped(unsigned long start, unsigned long end, unsigned type);
extern void e820_bootmem_free(pg_data_t *pgdat, unsigned long start,unsigned long end);
extern void e820_setup_gap(void);