BUG: 2.6.11-rc2 and -rc1 hang during boot on PowerMacs

Sylvain Munaut tnt at 246tNt.com
Thu Jan 27 08:33:22 EST 2005

Benjamin Herrenschmidt wrote:

>On Sun, 2005-01-23 at 11:43 +1100, Benjamin Herrenschmidt wrote:
>>I know about this problem, I'm working on a proper fix. Thanks for your
>Can you send me the PVR value for both of these CPUs
>(cat /proc/cpuinfo) ? I can't find right now why they would lock up
>unless the default idle loop is _not_ run properly, that is for some
>reason, NAP or DOZE mode end up not beeing enabled. Can you send me
>your .config as well ?
Note that when CONFIG_BDI_SWITCH is set, they both end up disabled
because nap & doze seems to perturb the BDI on some cores.

So there is a problem in that case ....

>Finally, try that patch and tell me if it makes a difference. 
 - Without it hangs (not really, it's still half running but serial 
output is stuck
due to no interrupts)
 - With it it works


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