Brokenness in HEAD

[Nathan Whitehorn]

Marcel Moolenaar wrote:
>
> On Feb 25, 2009, at 8:21 AM, Nathan Whitehorn wrote:
>
>> Something seems to currently be quite broken in HEAD for PowerPC, at 
>> least on the AIM platform. I'm getting almost immediate panics all 
>> over the place in the kernel, usually indicating memory corruption 
>> somehow (faults on bogus addresses, illegal instructions, etc...). 
>> This is a heads-up to those thinking of updating systems or who might 
>> know what happened.
>>
>> The change is on order a week old, and I believe newer than the 20th. 
>> I have not done a full binary search yet, but it is not related to 
>> the following (checked by selective reversion of bits of the tree, or 
>> disabling bits):
>> - USB code
>
> USB2 works on my G4 mini. I'm running rev 188699
> on it...
>
Yep. Mine too. And the previous kernel I have that works, compiled Feb. 
20, has USB2 and Altivec. The list was the list of things I know are not 
the problem, because my kernels panic with or without those components. 
I don't think I'll have time to track the problem down for a couple 
days, but I think it happened between r188860 and r189000, which doesn't 
leave too many candidates.
-Nathan