RE: [PATCH 0/1] ia64: numa emulation

From: Lee Schermerhorn <>
Date: 2005-10-21 06:58:57
On Thu, 2005-10-20 at 13:52 -0700, Chen, Kenneth W wrote:
> Lee Schermerhorn wrote on Thursday, October 20, 2005 1:36 PM
> > Also, because of interaction of max order and huge tlb fs [hard
> > coded HPAGE_SHIFT_DEFAULT], I disable hugetlbfs when numa emulation
> > is configured.
> Hugetlbfs can still be safely enabled.  The only downside is system
> won't be able to reserve any hugetlb page with the default size. Maybe
> it is senseless, but no harm is done here by enabling it.

OK.  I wasn't sure, and didn't have need for hugetlbfs at the time, so I
just disabled it by default when emulation selected.  One could always
override that default.

> > Back around 2.6.10, I recall seeing discussion of dynamically sizing
> > hugetlbfs based on max order.  I haven't tracked this to see if it
> > went in.  But, if it did, one could reenable hugetlbfs and adapted
> > to the reduced max order automatically.
> I have a patch does better than that.  We can change the hugetlb page
> size at run time.  I will clean up my patch and post it.

Cool.  Sounds like a generic [!just ia64] patch, right?


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Received on Fri Oct 21 06:59:26 2005

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