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On Wed, May 09, 2012 at 06:16:07PM +0200, Martin Husemann wrote:
> I know nothing about cpu spinup on x86 - should there be a watchdog/timeout?
> Any instrumentation I could add to track this further? I have a working
> pxeboot environment for this machine now.
I found options MPDEBUG and tried it:
as exected, it dies early when attaching cpu1 with "did not become ready".
I set a breakpoint on cpu_hatch, but it never makes it there.
It runs through mp_startup, since I find the cpu_trace array contains
0x40, 0x1, 0xff, so it should have passed the HALT(1) there.
pmap_largepages is 1.
Can somebody with more x86 knowledge please help me track this down?
Side question: should we cope better and detach that cpu (or something)
so the machine would at least come up as UP?