From: "'David Gibson'" <david@gibson.dropbear.id.au>
To: "Chen, Kenneth W" <kenneth.w.chen@intel.com>
Cc: linux-kernel@vger.kernel.org, linux-ia64@vger.kernel.org,
lse-tech@lists.sourceforge.net, raybry@sgi.com,
"'Andy Whitcroft'" <apw@shadowen.org>,
Andrew Morton <akpm@osdl.org>
Subject: Re: hugetlb demand paging patch part [0/3]
Date: Fri, 16 Apr 2004 14:02:32 +1000 [thread overview]
Message-ID: <20040416040231.GA13552@zax> (raw)
In-Reply-To: <200404160343.i3G3h8F13447@unix-os.sc.intel.com>
On Thu, Apr 15, 2004 at 08:43:08PM -0700, Chen, Kenneth W wrote:
> David Gibson wrote on Thursday, April 15, 2004 8:33 PM
> > To unify even the non-ppc64 archs we already have to allow for the
> > hugepage pagetables to have different structure across archs - on i386
> > and ppc64 the hugePTEs lie in PMD slots, on sparc64 and sh they lie in
> > (normal) PTE slots and on IA64 they lie in the PTE slots of a special
> > set of pagetables. Given that, it seems conceptually logical to me
> > that we also not assume the hugepage PTEs have the same layout as
> > normal PTEs. It makes the handle_mm_fault function not the least more
> > complicated.
>
> Correction: huge page pte on ia64 has the same format as a normal page pte.
Yes, the PTEs have the same format, but the page table layout is not
identical (it's almost the same, but the address is shifted right
before doing the lookup).
--
David Gibson | For every complex problem there is a
david AT gibson.dropbear.id.au | solution which is simple, neat and
| wrong.
http://www.ozlabs.org/people/dgibson
next prev parent reply other threads:[~2004-04-16 4:04 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-04-13 23:17 hugetlb demand paging patch part [0/3] Chen, Kenneth W
2004-04-14 9:04 ` Arjan van de Ven
2004-04-14 10:08 ` Andy Whitcroft
2004-04-14 15:21 ` [Lse-tech] " Martin J. Bligh
2004-04-14 15:23 ` Martin J. Bligh
2004-04-15 1:23 ` David Gibson
2004-04-15 6:42 ` David Gibson
2004-04-15 17:08 ` Chen, Kenneth W
2004-04-16 1:30 ` 'David Gibson'
2004-04-16 3:01 ` Chen, Kenneth W
2004-04-16 3:32 ` 'David Gibson'
2004-04-16 3:43 ` Chen, Kenneth W
2004-04-16 4:02 ` 'David Gibson' [this message]
[not found] <7A4826DE8867D411BAB8009027AE9EB91DB42C83@scsmsx401.sc.intel.com>
2004-04-15 18:42 ` Chen, Kenneth W
2004-04-16 1:38 ` 'David Gibson'
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20040416040231.GA13552@zax \
--to=david@gibson.dropbear.id.au \
--cc=akpm@osdl.org \
--cc=apw@shadowen.org \
--cc=kenneth.w.chen@intel.com \
--cc=linux-ia64@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=lse-tech@lists.sourceforge.net \
--cc=raybry@sgi.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox