> Extract the elfcorehdr extra space calculation from powerpc into a > generic helper crash_extra_elfcorehdr_size() for use by other > architectures like arm64. > > Strengthen the original powerpc check: instead of only checking > the loose CONFIG_CRASH_MAX_MEMORY_RANGES, the new helper enforces > a strict compile-time BUILD_BUG_ON() to guarantee that the absolute > maximum theoretical number of ELF Program Headers will never exceed > the ELF physical limit of PN_XNUM. This ensures absolute safety across > all architectures with zero runtime overhead. > > The helper also provides a zero-size stub when crash memory hotplug > is disabled. > > Cc: Madhavan Srinivasan <[email protected]> > Cc: Michael Ellerman <[email protected]> > Cc: Nicholas Piggin <[email protected]> > Cc: "Christophe Leroy (CS GROUP)" <[email protected]> > Cc: Andrew Morton <[email protected]> > Cc: Baoquan He <[email protected]> > Cc: Mike Rapoport <[email protected]> > Cc: Pasha Tatashin <[email protected]> > Cc: Pratyush Yadav <[email protected]> > Cc: Dave Young <[email protected]> > Cc: Sourabh Jain <[email protected]> > Signed-off-by: Jinjie Ruan <[email protected]>
Sashiko has reviewed this patch and found no issues. It looks great! -- Sashiko AI review ยท https://sashiko.dev/#/patchset/[email protected]?part=15
