powerpc/crash: use generic APIs to locate memory hole for kdump

Browse source

On PowerPC, the memory reserved for the crashkernel can contain components
like RTAS, TCE, OPAL, etc., which should be avoided when loading kexec
segments into crashkernel memory.  Due to these special components,
PowerPC has its own set of APIs to locate holes in the crashkernel memory
for loading kexec segments for kdump.  However, for loading kexec segments
in the kexec case, PowerPC already uses generic APIs to locate holes.

The previous patch in this series, titled "crash: Let arch decide usable
memory range in reserved area," introduced arch-specific hook to handle
such special regions in the crashkernel area.  So, switch PowerPC to use
the generic APIs to locate memory holes for kdump and remove the redundant
PowerPC-specific APIs.

Link: https://lkml.kernel.org/r/20250131113830.925179-5-sourabhjain@linux.ibm.com
Signed-off-by: Sourabh Jain <sourabhjain@linux.ibm.com>
Cc: Baoquan he <bhe@redhat.com>
Cc: Hari Bathini <hbathini@linux.ibm.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Mahesh Salgaonkar <mahesh@linux.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

...

This commit is contained in:

Sourabh Jain 2025-01-31 17:08:27 +05:30 • committed by Andrew Morton

parent 9f0552c978

commit 6e5250eaa6

2 changed files with 13 additions and 252 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

6

arch/powerpc/include/asm/kexec.h

View file

257

arch/powerpc/kexec/file_load_64.c

View file