From: Andi Kleen <andi@firstfloor.org>
To: Christoph Lameter <clameter@sgi.com>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [11/14] vcompound: Fallbacks for order 1 stack allocations on IA64 and x86
Date: 21 Mar 2008 23:30:54 +0100 [thread overview]
Message-ID: <871w63iuap.fsf@basil.nowhere.org> (raw)
In-Reply-To: <20080321061726.782068299@sgi.com>
Christoph Lameter <clameter@sgi.com> writes:
> This allows fallback for order 1 stack allocations. In the fallback
> scenario the stacks will be virtually mapped.
The traditional reason this was discouraged (people seem to reinvent
variants of this patch all the time) was that there used
to be drivers that did __pa() (or equivalent) on stack addresses
and that doesn't work with vmalloc pages.
I don't know if such drivers still exist, but such a change
is certainly not a no-brainer
-Andi
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next prev parent reply other threads:[~2008-03-21 22:30 UTC|newest]
Thread overview: 87+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-21 6:17 [00/14] Virtual Compound Page Support V3 Christoph Lameter
2008-03-21 6:17 ` [01/14] vcompound: Return page array on vunmap Christoph Lameter
2008-03-21 6:17 ` [02/14] vcompound: pageflags: Add PageVcompound() Christoph Lameter
2008-03-21 6:17 ` [03/14] vmallocinfo: Support display of vcompound for a virtual compound page Christoph Lameter
2008-03-21 7:55 ` Eric Dumazet
2008-03-21 17:32 ` Christoph Lameter
2008-03-21 6:17 ` [04/14] vcompound: Core piece Christoph Lameter
2008-03-22 12:10 ` KOSAKI Motohiro
2008-03-24 18:28 ` Christoph Lameter
2008-03-21 6:17 ` [05/14] vcompound: Debugging aid Christoph Lameter
2008-03-21 6:17 ` [06/14] vcompound: Virtual fallback for sparsemem Christoph Lameter
2008-03-21 6:17 ` [07/14] vcompound: bit waitqueue support Christoph Lameter
2008-03-21 6:17 ` [08/14] vcompound: Fallback for zone wait table Christoph Lameter
2008-03-21 6:17 ` [09/14] vcompound: crypto: Fallback for temporary order 2 allocation Christoph Lameter
2008-03-21 6:17 ` [10/14] vcompound: slub: Use for buffer to correlate allocation addresses Christoph Lameter
2008-03-21 6:17 ` [11/14] vcompound: Fallbacks for order 1 stack allocations on IA64 and x86 Christoph Lameter
2008-03-21 7:25 ` David Miller, Christoph Lameter
2008-03-21 8:39 ` Ingo Molnar
2008-03-21 17:33 ` Christoph Lameter
2008-03-21 19:02 ` Ingo Molnar
2008-03-21 19:04 ` Christoph Lameter
2008-03-21 17:40 ` Christoph Lameter
2008-03-21 21:57 ` David Miller, Christoph Lameter
2008-03-24 18:27 ` Christoph Lameter
2008-03-24 20:37 ` larger default page sizes David Miller, Christoph Lameter
2008-03-24 21:05 ` Christoph Lameter
2008-03-24 21:43 ` David Miller, Christoph Lameter
2008-03-25 17:48 ` Christoph Lameter
2008-03-25 23:22 ` David Miller, Christoph Lameter
2008-03-25 23:41 ` Peter Chubb
2008-03-25 23:49 ` David Miller, Peter Chubb
2008-03-26 0:25 ` Peter Chubb
2008-03-26 0:31 ` David Miller, Peter Chubb
2008-03-26 0:34 ` David Mosberger-Tang
2008-03-26 0:39 ` David Miller, David Mosberger-Tang
2008-03-26 0:57 ` Peter Chubb
2008-03-26 4:16 ` John Marvin
2008-03-26 4:36 ` David Miller, John Marvin
2008-03-24 21:25 ` Luck, Tony
2008-03-24 21:46 ` David Miller, Luck, Tony
2008-03-25 3:29 ` Paul Mackerras
2008-03-25 4:15 ` David Miller, Paul Mackerras
2008-03-25 11:50 ` Paul Mackerras
2008-03-25 23:32 ` David Miller, Paul Mackerras
2008-03-25 23:49 ` Luck, Tony
2008-03-26 0:16 ` David Miller, Luck, Tony
2008-03-26 15:54 ` Nish Aravamudan
2008-03-26 17:05 ` Luck, Tony
2008-03-26 18:54 ` Mel Gorman
2008-03-25 12:05 ` Andi Kleen
2008-03-25 21:27 ` Paul Mackerras
2008-03-26 5:24 ` Paul Mackerras
2008-03-26 15:59 ` Linus Torvalds
2008-03-27 1:08 ` Paul Mackerras
2008-03-26 17:56 ` Christoph Lameter
2008-03-26 23:21 ` David Miller, Christoph Lameter
2008-03-27 3:00 ` Paul Mackerras
2008-03-25 18:27 ` Dave Hansen
2008-03-24 21:13 ` [11/14] vcompound: Fallbacks for order 1 stack allocations on IA64 and x86 Luck, Tony
2008-03-25 17:42 ` Christoph Lameter
2008-03-25 19:09 ` Luck, Tony
2008-03-25 19:25 ` Christoph Lameter
2008-03-21 22:30 ` Andi Kleen [this message]
2008-03-24 19:53 ` Christoph Lameter
2008-03-25 7:51 ` Andi Kleen
2008-03-25 17:55 ` Christoph Lameter
2008-03-25 18:07 ` Andi Kleen
2008-03-21 6:17 ` [12/14] vcompound: Avoid vmalloc in e1000 driver Christoph Lameter
2008-03-21 17:27 ` Kok, Auke
2008-03-21 6:17 ` [13/14] vcompound: Use vcompound for swap_map Christoph Lameter
2008-03-21 21:25 ` Andi Kleen
2008-03-21 21:33 ` Christoph Lameter
2008-03-24 19:54 ` Christoph Lameter
2008-03-25 7:52 ` Andi Kleen
2008-03-25 17:45 ` Christoph Lameter
2008-03-25 17:55 ` Andi Kleen
2008-03-25 17:51 ` Christoph Lameter
2008-03-21 6:17 ` [14/14] vcompound: Avoid vmalloc for ehash_locks Christoph Lameter
2008-03-21 7:02 ` Eric Dumazet
2008-03-21 7:03 ` Christoph Lameter
2008-03-21 7:31 ` David Miller, Christoph Lameter
2008-03-21 7:42 ` Eric Dumazet
2008-03-21 7:31 ` David Miller, Eric Dumazet
2008-03-21 17:31 ` Christoph Lameter
2008-03-22 18:40 ` [00/14] Virtual Compound Page Support V3 Arjan van de Ven
2008-03-24 18:31 ` Christoph Lameter
2008-03-24 19:29 ` Christoph Lameter
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