On Thu, Sep 18, 2008 at 09:49:34PM +0800, Michael.Kang wrote: > And jump to __secondary_start -> call_setup_cpu, source code in > call_setup_cpu as the following: > 112 _GLOBAL(call_setup_cpu) > 113 addis r4,r3,[EMAIL PROTECTED] > 114 addi r4,r4,[EMAIL PROTECTED] > 115 lwz r4,0(r4) > 116 add r4,r4,r3 > 117 lwz r5,CPU_SPEC_SETUP(r4) > 118 cmpwi 0,r5,0 > 119 add r5,r5,r3 > 120 beqlr > 121 mtctr r5 > 122 bctr > > here it seems cur_cpu_spec here is not a valid value since > cur_cpu_spec will only be set in identify_cpu() [ > arch/powerpc/kernel/cputable.c: 1301] later. > > So what is my mistake? Who responsible for initialize cur_cpu_spec > variable for second core??
There is only one cur_cpu_spec for all cores, which is initialized by the boot core before it releases the secondaries. -Scott _______________________________________________ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
