diff options
| author | Horms <horms@verge.net.au> | 2007-03-06 02:34:21 -0800 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2007-03-06 14:47:54 -0800 |
| commit | f4a570997e71b892805a1e71303d09c327af135f (patch) | |
| tree | 9fe577e7b97ee7365481489f1c263aa1f868e199 | |
| parent | 25667d675454f2cd258c5fa798a2281af1ef2ae9 (diff) | |
[IA64] point saved_max_pfn to the max_pfn of the entire system
Make saved_max_pfn point to max_pfn of entire system.
Without this patch is so that vmcore is zero length on ia64. This is
because saved_max_pfn was wrongly being set to the max_pfn of the crash
kernel's address space, rather than the max_pfg on the physical memory of
the machine - the whole purpose of vmcore is to access physical memory that
is not part of the crash kernel's addresss space.
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Zou Nan hai <nanhai.zou@intel.com>
Sort-Of-Acked-By: Jay Lan <jlan@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
| -rw-r--r-- | arch/ia64/kernel/efi.c | 6 | ||||
| -rw-r--r-- | arch/ia64/mm/contig.c | 5 | ||||
| -rw-r--r-- | arch/ia64/mm/discontig.c | 6 |
3 files changed, 6 insertions, 11 deletions
diff --git a/arch/ia64/kernel/efi.c b/arch/ia64/kernel/efi.c index 772ba6fe110f..32ce330cbc64 100644 --- a/arch/ia64/kernel/efi.c +++ b/arch/ia64/kernel/efi.c @@ -21,6 +21,7 @@ * Skip non-WB memory and ignore empty memory ranges. */ #include <linux/module.h> +#include <linux/bootmem.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/types.h> @@ -1009,6 +1010,11 @@ efi_memmap_init(unsigned long *s, unsigned long *e) } else ae = efi_md_end(md); +#ifdef CONFIG_CRASH_DUMP + /* saved_max_pfn should ignore max_addr= command line arg */ + if (saved_max_pfn < (ae >> PAGE_SHIFT)) + saved_max_pfn = (ae >> PAGE_SHIFT); +#endif /* keep within max_addr= and min_addr= command line arg */ as = max(as, min_addr); ae = min(ae, max_addr); diff --git a/arch/ia64/mm/contig.c b/arch/ia64/mm/contig.c index ca4d41e5f177..fb0f4698f5d0 100644 --- a/arch/ia64/mm/contig.c +++ b/arch/ia64/mm/contig.c @@ -197,11 +197,6 @@ find_memory (void) find_initrd(); -#ifdef CONFIG_CRASH_DUMP - /* If we are doing a crash dump, we still need to know the real mem - * size before original memory map is reset. */ - saved_max_pfn = max_pfn; -#endif } #ifdef CONFIG_SMP diff --git a/arch/ia64/mm/discontig.c b/arch/ia64/mm/discontig.c index 16835108bb5b..11a2d8825d89 100644 --- a/arch/ia64/mm/discontig.c +++ b/arch/ia64/mm/discontig.c @@ -480,12 +480,6 @@ void __init find_memory(void) max_pfn = max_low_pfn; find_initrd(); - -#ifdef CONFIG_CRASH_DUMP - /* If we are doing a crash dump, we still need to know the real mem - * size before original memory map is reset. */ - saved_max_pfn = max_pfn; -#endif } #ifdef CONFIG_SMP |