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[PATCH] kdump: x86_64: add memmmap command line option

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From: Vivek Goyal <vgoyal@in.ibm.com>

- This patch introduces the memmap option for x86_64 similar to i386.

- memmap=exactmap enables setting of an exact E820 memory map, as specified
  by the user.

Changes in this version:

- Used e820_end_of_ram() to find the max_pfn as suggested by Andi kleen.

- removed PFN_UP & PFN_DOWN macros

- Printing the user defined map also.

Signed-off-by: Murali M Chakravarthy <muralim@in.ibm.com>
Signed-off-by: Hariprasad Nellitheertha <nharipra@gmail.com>
Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
akpm@osdl.org 2006-01-09 20:51:46 -08:00 • committed by Linus Torvalds
commit 69cda7b1f0
4 changed files with 50 additions and 1 deletions
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1
include/asm-x86_64/e820.h
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@ -55,6 +55,7 @@ extern unsigned long e820_hole_size(unsigned long start_pfn,
unsigned long end_pfn);
extern void __init parse_memopt(char *p, char **end);
extern void __init parse_memmapopt(char *p, char **end);
extern struct e820map e820;
#endif/*!__ASSEMBLY__*/