On 01/31/25 at 05:08pm, Sourabh Jain wrote: > Although the crashkernel area is reserved, on architectures like > PowerPC, it is possible for the crashkernel reserved area to contain > components like RTAS, TCE, OPAL, etc. To avoid placing kexec segments > over these components, PowerPC has its own set of APIs to locate holes > in the crashkernel reserved area. > > Add an arch hook in the generic locate mem hole APIs so that > architectures can handle such special regions in the crashkernel area > while locating memory holes for kexec segments using generic APIs. > With this, a lot of redundant arch-specific code can be removed, as it > performs the exact same job as the generic APIs. > > To keep the generic and arch-specific changes separate, the changes > related to moving PowerPC to use the generic APIs and the removal of > PowerPC-specific APIs for memory hole allocation are done in a > subsequent patch titled "powerpc/crash: Use generic APIs to locate > memory hole for kdump. > > Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> > Cc: Baoquan he <bhe@xxxxxxxxxx> > Cc: Hari Bathini <hbathini@xxxxxxxxxxxxx> > Cc: Madhavan Srinivasan <maddy@xxxxxxxxxxxxx> > Cc: Mahesh Salgaonkar <mahesh@xxxxxxxxxxxxx> > Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx> > Cc: kexec@xxxxxxxxxxxxxxxxxxx > Cc: linux-kernel@xxxxxxxxxxxxxxx > Signed-off-by: Sourabh Jain <sourabhjain@xxxxxxxxxxxxx> > --- > include/linux/kexec.h | 9 +++++++++ > kernel/kexec_file.c | 12 ++++++++++++ > 2 files changed, 21 insertions(+) LGTM, Acked-by: Baoquan He <bhe@xxxxxxxxxx>
