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From: Andi Kleen <ak@suse.de>
To: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
virtualization@lists.osdl.org,
lkml <linux-kernel@vger.kernel.org>,
Rusty Russell <rusty@rustcorp.com.au>
Subject: Re: [patch 4/6] Convert PDA into the percpu section
Date: Sat, 31 Mar 2007 04:35:58 +0200 [thread overview]
Message-ID: <200703310435.59298.ak@suse.de> (raw)
In-Reply-To: <20070331020055.075978807@goop.org>
On Saturday 31 March 2007 04:00, Jeremy Fitzhardinge wrote:
> Currently x86 (similar to x84-64) has a special per-cpu structure
> called "i386_pda" which can be easily and efficiently referenced via
> the %fs register. An ELF section is more flexible than a structure,
> allowing any piece of code to use this area. Indeed, such a section
> already exists: the per-cpu area.
Hmm, I'm a little reluctant. This moves i386 more away from x86-64
again. If we ever merge them it would mean more work. Do you really need it?
-Andi
next prev parent reply other threads:[~2007-03-31 2:36 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-31 2:00 [patch 0/6] i386 gdt and percpu cleanups Jeremy Fitzhardinge
2007-03-31 2:00 ` [patch 1/6] i386: Account for module percpu space separately from kernel percpu Jeremy Fitzhardinge
2007-03-31 2:00 ` [patch 2/6] Allow percpu variables to be page-aligned Jeremy Fitzhardinge
2007-03-31 2:00 ` [patch 3/6] Page-align the GDT Jeremy Fitzhardinge
2007-03-31 2:00 ` [patch 4/6] Convert PDA into the percpu section Jeremy Fitzhardinge
2007-03-31 2:35 ` Andi Kleen [this message]
2007-03-31 2:54 ` Rusty Russell
2007-03-31 3:00 ` Jeremy Fitzhardinge
2007-03-31 2:00 ` [patch 5/6] cleanups to help using per-cpu variables from asm Jeremy Fitzhardinge
2007-03-31 2:00 ` [patch 6/6] Define per_cpu_offset Jeremy Fitzhardinge
2007-03-31 2:56 ` [patch 0/6] i386 gdt and percpu cleanups Rusty Russell
2007-03-31 3:05 ` Jeremy Fitzhardinge
2007-03-31 3:16 ` Jeremy Fitzhardinge
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