I ' m using kexec on a mips64 smp board. http://lists.infradead.org/pipermail/kexec/2008-June/001909.html By now , the second kernel has halt at start_kernel --> calibrate_delay, and I found that it was because of jiffies was not changing. So it might be the failure of installation for timer interrupt , or timer interrupt did not trigger. Before jumped into second kernel, local_irq_disable was called at each CPU , and only one of CPU was enable to jump into second kernel, while the others loop at relocate_kernel all the time. After I got dump_stack log of the firts kernel, I found that, do_timer was invoked right after console_init -->release_console_sem , it seemed that , timer interrupt would be triggered by release_console_sem . here is the dump_stack info of do_timer of first kernel: 0:Call Trace: 0:[ <834243cc>]0: dump_stack+0x8/0x34 0:[ <83451ee0>]0: do_timer+0x70/0xa8 0:[ <8342333c>]0: timer_interrupt+0x64/0x160 0:[ <834234b4>]0: ll_timer_interrupt+0x7c/0xd8 0:[ <8341d220>]0: ret_from_irq+0x0/0x4 0:[ <83443a64>]0: release_console_sem+0x1e0/0x328 0:[ <8377cf88>]0: serial8250_console_init+0x1c/0x2c 0:[ <8377ae58>]0: console_init+0x4c/0x6c 0:[ <83762dd8>]0: start_kernel+0x3e0/0x75c Any one know how to fix it? or how to enable the timer interrupt in second kernel? Thx
