This topic has a very long history. It comes from Mahesh Salgaonkar <mahesh@xxxxxxxxxxxxxxxxxx> For v3: https://patchwork.ozlabs.org/patch/834860/ In this series, I separate and change the mapping between cpu logical id and hwid. I hope we can acquire it for "kexec -p" Mahesh Salgaonkar (1): ppc64 boot: Wait for boot cpu to show up if nr_cpus limit is about to hit. Pingfan Liu (2): powerpc, cpu: partially unbind the mapping between cpu logical id and its seq in dt powerpc, cpu: handling the special case when boot_cpuid greater than nr_cpus arch/powerpc/include/asm/paca.h | 3 +++ arch/powerpc/include/asm/smp.h | 1 + arch/powerpc/kernel/paca.c | 19 ++++++++++++++----- arch/powerpc/kernel/prom.c | 25 ++++++++++++++----------- arch/powerpc/kernel/setup-common.c | 35 +++++++++++++++++++++++++++++++++-- 5 files changed, 65 insertions(+), 18 deletions(-) -- 2.7.4 _______________________________________________ kexec mailing list kexec@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/kexec