From: Dave Hansen <haveblue@us.ibm.com>
To: "Chen, Kenneth W" <kenneth.w.chen@intel.com>
Cc: 'Adam Litke' <agl@us.ibm.com>, linux-mm@kvack.org
Subject: RE: [RFC] Hugetlb fallback to normal pages
Date: Mon, 01 May 2006 08:46:47 -0700 [thread overview]
Message-ID: <1146498407.32079.15.camel@localhost.localdomain> (raw)
In-Reply-To: <4sur0l$s7b0u@fmsmga001.fm.intel.com>
On Thu, 2006-04-27 at 16:31 -0700, Chen, Kenneth W wrote:
> Some arch don't support mixed page size within a range of virtual address.
> So automatic fallback to smaller page won't work on that arch :-(
Well, they're mixed to _some_ degree :)
On ppc64, for instance, we have to do the selection in 256MB granules.
It is still feasible, the cost is just much higher than it would be on
x86.
What are the restrictions on ia64?
-- Dave
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next prev parent reply other threads:[~2006-05-01 15:47 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-04-26 19:46 Adam Litke
2006-04-27 23:31 ` Chen, Kenneth W
2006-05-01 15:46 ` Dave Hansen [this message]
2006-05-01 16:23 ` Christoph Lameter
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