From: Pingfan Liu <[email protected]> This series addresses the nr_cpus issue for PowerPC without re-ordering cpu number. To save the memory used by percpu area, it also limits the possible cpu numbers by allowing hole in cpu_possible_mask.
Because the last cpu number will bigger than nr_cpu_ids in this way, some pointer arrays indexed by cpu should be extended to hold the pointer, e.g. paca_ptrs. Please notice that this series still has some issue (some cpu can not be brought up), but before I resolve it. Please share your thoughts about it. Thanks Cc: Michael Ellerman <[email protected]> Cc: Nicholas Piggin <[email protected]> Cc: Christophe Leroy <[email protected]> Cc: Mahesh Salgaonkar <[email protected]> Cc: Wen Xiong <[email protected]> Cc: Baoquan He <[email protected]> Cc: Ming Lei <[email protected]> Cc: Sourabh Jain <[email protected]> Cc: Hari Bathini <[email protected]> Cc: [email protected] To: [email protected] Pingfan Liu (3): powerpc/kernel: Remove check on paca_ptrs_size powerpc/kernel: Extend arrays' size to make room for a hole in cpu_possible_mask powerpc/smp: Allow hole in paca_ptrs to accommodate boot_cpu arch/powerpc/include/asm/paca.h | 2 ++ arch/powerpc/include/asm/smp.h | 1 + arch/powerpc/kernel/paca.c | 24 +++++++----------------- arch/powerpc/kernel/prom.c | 6 ++++++ arch/powerpc/kernel/setup-common.c | 26 +++++++++++++++++++++----- arch/powerpc/kernel/smp.c | 3 ++- 6 files changed, 39 insertions(+), 23 deletions(-) -- 2.31.1 _______________________________________________ kexec mailing list [email protected] http://lists.infradead.org/mailman/listinfo/kexec
