From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Linus Torvalds <torvalds@osdl.org>
Cc: Andrew Morton <akpm@osdl.org>, Hugh Dickins <hugh@veritas.com>,
mingo@elte.hu, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 01/15] mm: poison struct page for ptlock
Date: Sat, 12 Nov 2005 17:27:30 +1100 [thread overview]
Message-ID: <1131776851.7406.6.camel@gaston> (raw)
In-Reply-To: <Pine.LNX.4.64.0511101155160.4627@g5.osdl.org>
On Thu, 2005-11-10 at 11:56 -0800, Linus Torvalds wrote:
>
> On Thu, 10 Nov 2005, Andrew Morton wrote:
> >
> > IOW we're assuming that no 32-bit architectures will obtain pagetables from
> > slab?
>
> I thought ARM does?
>
> The ARM page tables are something strange (I think they have 1024-byte
> page tables and 4kB pages or something like that?). So they'll not only
> obtain the page tables from slab, they have four of them per page.
Just catching up on old mails... ppc64 also gets page tables from kmem
caches (though they are currently page sized & aligned). We really want
to be able to have more freedom and get away from the current idea that
1 PTE page == one page. Our intermediary levels (PMDs, PUDs, PGDs)
already have various random sizes.
Ben.
next prev parent reply other threads:[~2005-11-12 6:31 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-11-10 1:42 [PATCH 00/15] mm: struct page lock and counts Hugh Dickins
2005-11-10 1:43 ` [PATCH 01/15] mm: poison struct page for ptlock Hugh Dickins
2005-11-10 2:10 ` Andrew Morton
2005-11-10 2:22 ` Hugh Dickins
2005-11-10 2:56 ` Andrew Morton
2005-11-10 2:58 ` Andrew Morton
2005-11-10 11:28 ` Ingo Molnar
2005-11-10 12:06 ` Ingo Molnar
2005-11-10 12:26 ` Andrew Morton
2005-11-10 21:37 ` Christoph Lameter
2005-11-10 21:52 ` Christoph Hellwig
2005-11-11 10:46 ` Ingo Molnar
2005-11-12 23:48 ` Adrian Bunk
2005-11-10 12:35 ` Hugh Dickins
2005-11-10 12:51 ` Andrew Morton
2005-11-10 13:29 ` Hugh Dickins
2005-11-10 15:00 ` Ingo Molnar
2005-11-10 15:38 ` Hugh Dickins
2005-11-10 19:49 ` Andrew Morton
2005-11-10 19:56 ` Linus Torvalds
2005-11-11 0:10 ` Russell King
2005-11-12 6:27 ` Benjamin Herrenschmidt [this message]
2005-11-11 15:02 ` Hugh Dickins
2005-11-15 18:49 ` Andrew Morton
2005-11-15 19:51 ` Hugh Dickins
2005-11-15 20:05 ` Andrew Morton
2005-11-10 1:44 ` [PATCH 02/15] mm: revert page_private Hugh Dickins
2005-11-10 1:46 ` [PATCH 03/15] mm reiser4: " Hugh Dickins
2005-11-10 1:47 ` [PATCH 04/15] mm: update split ptlock Kconfig Hugh Dickins
2005-11-10 1:48 ` [PATCH 05/15] mm: unbloat get_futex_key Hugh Dickins
2005-11-10 1:50 ` [PATCH 06/15] mm: remove ppc highpte Hugh Dickins
2005-11-10 1:52 ` Benjamin Herrenschmidt
2005-11-10 1:55 ` Paul Mackerras
2005-11-10 2:46 ` Hugh Dickins
2005-11-10 1:51 ` [PATCH 07/15] mm: powerpc ptlock comments Hugh Dickins
2005-11-10 1:53 ` [PATCH 08/15] mm: powerpc init_mm without ptlock Hugh Dickins
2005-11-10 1:56 ` [PATCH 09/15] mm: fill arch atomic64 gaps Hugh Dickins
2005-11-10 13:38 ` Andi Kleen
2005-11-10 15:19 ` Hugh Dickins
2005-11-10 1:57 ` [PATCH 10/15] mm: atomic64 page counts Hugh Dickins
2005-11-10 2:16 ` Andrew Morton
2005-11-10 2:33 ` Hugh Dickins
2005-11-10 3:01 ` Andrew Morton
2005-11-10 21:43 ` Christoph Lameter
2005-11-10 21:53 ` Andrew Morton
2005-11-11 15:25 ` Hugh Dickins
2005-11-11 18:03 ` Christoph Lameter
2005-11-10 2:00 ` [PATCH 11/15] mm: long " Hugh Dickins
2005-11-10 2:01 ` [PATCH 12/15] mm reiser4: " Hugh Dickins
2005-11-10 2:03 ` [PATCH 13/15] mm: get_user_pages check count Hugh Dickins
2005-11-10 2:08 ` [PATCH 14/15] mm: inc_page_table_pages check max Hugh Dickins
2005-11-10 2:09 ` [PATCH 15/15] mm: remove install_page limit Hugh Dickins
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