[PATCH] x86_64: Introduce e820_all_mapped
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>
diff --git a/include/asm-i386/e820.h b/include/asm-i386/e820.h
index edf65be..ca82acb 100644
--- a/include/asm-i386/e820.h
+++ b/include/asm-i386/e820.h
@@ -35,6 +35,10 @@
};
extern struct e820map e820;
+
+extern int e820_all_mapped(unsigned long start, unsigned long end,
+ unsigned type);
+
#endif/*!__ASSEMBLY__*/
#endif/*__E820_HEADER*/