https://github.com/torvalds/linux
Revision e269d269e0b53a7a6cb1d04290f8174bf0488cb4 authored by Sachin P. Sant on 08 September 2006, 02:29:52 UTC, committed by Paul Mackerras on 13 September 2006, 08:30:04 UTC
This is required to generate proper core files using kdump on ppc64.

Create a backup region of 64K size irrespective of the PAGE SIZE.
At present 32K was used as backup size. In the case of 64K page size,
second PT_LOAD segments starts at 32K and the first one is not page
aligned.  __ioremap() (crash_dump.c) fails if pfn = 0 which is the
case for the second PT_LOAD segment. This is not an issue for 4K page
size because the the first page (32K backup) is copied to second
kernel memory and thus referencing with the second kernel pfn.

Signed-off-by: Sachin Sant <sachinp@in.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
1 parent 6958829
History
Tip revision: e269d269e0b53a7a6cb1d04290f8174bf0488cb4 authored by Sachin P. Sant on 08 September 2006, 02:29:52 UTC
[POWERPC] kdump: Support kernels having 64k page size.
Tip revision: e269d26
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