If no start address is specified for crashkernel, the current program hard code as: crashk_res.start = min(0x8000000ULL, (ppc64_rma_size / 2)); This limits the candidate memory region, and may cause failure while there is enough mem for crashkernel. This patch suggests to find a suitable mem chunk by memblock_find_in_range()
Cc: Benjamin Herrenschmidt <b...@kernel.crashing.org> Cc: Michael Ellerman <m...@ellerman.id.au> Cc: Hari Bathini <hbath...@linux.ibm.com> Cc: Mahesh Salgaonkar <mah...@linux.vnet.ibm.com> Cc: Anton Blanchard <an...@samba.org> Pingfan Liu (2): powerpc/prom: move mmu_early_init_devtree() before early_init_dt_scan_cpus() powerpc/kexec: avoid hard coding when automatically allocating mem for crashkernel arch/powerpc/kernel/machine_kexec.c | 24 +++++++++++++++--------- arch/powerpc/kernel/prom.c | 10 ++++++---- 2 files changed, 21 insertions(+), 13 deletions(-) -- 2.7.4