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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 <[email protected]>
Signed-off-by: Andi Kleen <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Arjan van de Ven 2006-04-07 19:49:27 +02:00 • committed by Linus Torvalds
commit 952223683e
4 changed files with 68 additions and 0 deletions
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4
include/asm-i386/e820.h
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@ -35,6 +35,10 @@ struct e820map {
};
extern struct e820map e820;
extern int e820_all_mapped(unsigned long start, unsigned long end,
unsigned type);
#endif/*!__ASSEMBLY__*/
#endif/*__E820_HEADER*/