Re: [Crash-utility] FW: Number of cpus on ARM

----- Original Message ----- > Hi > > I have tried the arm_get_smp_cpus implementation given below and it works > fine on all examples I have tested. > > What about ARM64? Same update? Maybe later. ARM64 kdump support is still being developed, and on a live system, it seems that I can't offline a cpu: [root@apm-mustang-ev2-03 cpu7]# cat /sys/devices/system/cpu/cpu7/online 1 [root@apm-mustang-ev2-03 cpu7]# echo 0 > /sys/devices/system/cpu/cpu7/online -bash: echo: write error: Operation not supported [root@apm-mustang-ev2-03 cpu7]# So for now I'll just make the change to 32-bit ARM. Dave