2013/4/10 Stephen Warren <swarren at wwwdotorg.org>: > On 04/10/2013 03:35 AM, Li Haifeng wrote: >> Hi, everyone. >> >> Recently, I try to run kdump on pandaboard ES with omap4460. After >> load capture kernel by "kexec -l" and execute "kexec -e", the serial >> port output "Starting new kernel" and "Bye", then the system hangs up. >> >> I have tried the upstream Linux Kernel v3.4 and v3.8. All are with this issue. > > This is a shot in the dark. I assume you have SMP enabled. Can you use > hotplug to remove all CPUs other than CPU0, so that the kexec happens on > the boot CPU? That is certainly necessary for kexec to work correctly on > Tegra. Thanks for your attention. I do disable SMP feature. And the .config file for v3.8 could be found here: http://pastehtml.com/view/cylyrfejt.txt The log and operation could be found here: http://pastehtml.com/view/cylyfrb3a.txt Some key setting list below. bootargs: rw vram=32M fixrtc mem=1G at 0x80000000 root=/dev/mmcblk0p2 console=ttyO2,115200n8 rootwait crashkernel=64M at 0x82000000 operation: / # ./kexec -l --append="rw vram=32M fixrtc root=/dev/mmcblk0p2 console=ttyO2, 115200n8 rootwait" uImage / # ./kexec -d -e The output: [ 57.373687] Starting new kernel [ 57.377044] Bye! Then system hangs.
