lkml.org 
[lkml]   [2004]   [Mar]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [Lse-tech] Re: Hugetlbpages in very large memory machines.......
> > fall back to smaller pages if possible (I was told it isn't easily
> > possible on IA64)
>
> That's not entirely true. Whether it's feasible depends on how the
> MMU is used. The HPW (Hardware Pagetable Walker) and short mode of the
> VHPT insist upon pagesize being a per-region attribute, where regions
> are something like 60-bit areas of virtualspace, which is likely what
> they're referring to. The VHPT in long mode should be capable of
> arbitrary virtual placement (modulo alignment of course).

Redesigning the low level TLB fault handling for this would not count as
"easily" in my book.

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

\
 
 \ /
  Last update: 2005-03-22 14:01    [W:0.651 / U:0.308 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site