From: Pingfan Liu <kernelfans@xxxxxxxxx> Since my last v4 [1], the code has undergone great changes. The paca[] array has been reorganized and indexed by paca_ptrs[], which dramatically decreases the memory consumption even if there are many unpresent cpus in the middle. However, reordering the logical cpu numbers can further decrease the size of paca_ptrs[] in the kdump case. These two patches rotate-shifts the cpu's sequence number in the device tree to obtain the logical cpu id. [1]: https://lore.kernel.org/linuxppc-dev/1520829790-14029-1-git-send-email-kernelfans@xxxxxxxxx/ --- v8 -> v9 put aside [3-5/5] in v8 for the time being, which complicates the code. optimize out some unnecessary initialization according to Hari's suggestion Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx> Cc: Nicholas Piggin <npiggin@xxxxxxxxx> Cc: Christophe Leroy <christophe.leroy@xxxxxxxxxx> Cc: Mahesh Salgaonkar <mahesh@xxxxxxxxxxxxx> Cc: Wen Xiong <wenxiong@xxxxxxxxxx> Cc: Baoquan He <bhe@xxxxxxxxxx> Cc: Ming Lei <ming.lei@xxxxxxxxxx> Cc: Sourabh Jain <sourabhjain@xxxxxxxxxxxxx> Cc: Hari Bathini <hbathini@xxxxxxxxxxxxx> Cc: kexec@xxxxxxxxxxxxxxxxxxx To: linuxppc-dev@xxxxxxxxxxxxxxxx Pingfan Liu (2): powerpc/setup : Enable boot_cpu_hwid for PPC32 powerpc/setup: Loosen the mapping between cpu logical id and its seq in dt arch/powerpc/include/asm/smp.h | 2 +- arch/powerpc/kernel/prom.c | 26 +++++---- arch/powerpc/kernel/setup-common.c | 86 +++++++++++++++++++++++------- 3 files changed, 83 insertions(+), 31 deletions(-) -- 2.31.1 _______________________________________________ kexec mailing list kexec@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/kexec
