Re: 2.6.16 hugetlbfs problem - DEBUG_PAGEALLOC

[Andrew Morton]

"Chen, Kenneth W" <kenneth.w.chen@xxxxxxxxx> wrote:
>
> Mark Rustad wrote on Friday, March 24, 2006 9:52 AM
>  > I have narrowed this down to DEBUG_PAGEALLOC. If that option is  
>  > enabled, attempts to reference areas mmap-ed from hugetlbfs files  
>  > fault forever. You can see that I had that set in the failing config  
>  > I reported below.
> 
>  Yeah, it turns out that the debug option is not compatible with hugetlb
>  page support. That debug option turns off PSE. Once it is turned off in
>  CR4, cpu will ignore pse bit in the pmd and causing infinite page-not-
>  present fault :-(

I wonder if any of the other architectures which implement both these
features might have problems too.

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/