From: Andrea Arcangeli <andrea@novell.com>
To: Mikael Pettersson <mikpe@csd.uu.se>
Cc: Andrew Morton <akpm@osdl.org>,
Nick Piggin <nickpiggin@yahoo.com.au>,
linux-kernel@vger.kernel.org
Subject: Re: ZONE_PADDING wastes 4 bytes of the new cacheline
Date: Thu, 21 Oct 2004 14:45:05 +0200 [thread overview]
Message-ID: <20041021124505.GD8756@dualathlon.random> (raw)
In-Reply-To: <16759.38054.944944.610417@alkaid.it.uu.se>
On Thu, Oct 21, 2004 at 12:51:18PM +0200, Mikael Pettersson wrote:
> Have you verified that? GCCs up to and including 2.95.3 and
> early versions of 2.96 miscompiled the kernel when spinlocks
> where empty structs on UP. I.e., you might not get a compile-time
> error but runtime corruption instead.
peraphs we should add a check on the compiler and force people to use
gcc >= 3?
Otherwise adding an #ifdef will fix 2.95, just like the spinlock does in
UP.
btw, the only machine where I still have gcc 2.95.3 is not uptodate
enough to run 2.6 regardless of the fact 2.6 could compile on such
machine or not.
next prev parent reply other threads:[~2004-10-21 13:00 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-21 1:17 ZONE_PADDING wastes 4 bytes of the new cacheline Andrea Arcangeli
2004-10-21 3:10 ` Nick Piggin
2004-10-21 4:36 ` Andrew Morton
2004-10-21 4:53 ` Nick Piggin
2004-10-21 10:51 ` Mikael Pettersson
2004-10-21 12:45 ` Andrea Arcangeli [this message]
2004-10-21 18:54 ` Adam Heath
2004-10-21 20:21 ` DaMouse
2004-10-21 21:24 ` Jon Masters
2004-10-22 10:09 ` DaMouse
2004-10-21 22:26 ` Nick Piggin
2004-10-21 22:45 ` Andrea Arcangeli
2004-10-22 0:34 ` Nick Piggin
2004-10-22 1:10 ` Andrea Arcangeli
2004-10-22 1:26 ` Andrew Morton
2004-10-22 2:55 ` Jesse Barnes
2004-10-22 3:38 ` Nick Piggin
2004-10-22 3:49 ` Jesse Barnes
2004-10-22 17:15 ` Andrea Arcangeli
2004-10-22 3:09 ` Nick Piggin
2004-10-22 3:26 ` Andrew Morton
2004-10-22 3:35 ` Nick Piggin
2004-10-22 17:13 ` Andrea Arcangeli
2004-10-22 17:07 ` Andrea Arcangeli
2004-10-22 15:50 ` Andrea Arcangeli
2004-10-22 3:02 ` Nick Piggin
2004-10-22 16:58 ` Andrea Arcangeli
2004-10-23 4:33 ` Nick Piggin
2004-10-23 9:59 ` Andrea Arcangeli
2004-10-23 10:22 ` Nick Piggin
2004-10-23 11:03 ` Andrea Arcangeli
2004-10-23 16:28 ` Nick Piggin
2004-10-25 12:44 ` Andrea Arcangeli
2004-10-25 12:49 ` Nick Piggin
2004-10-25 13:51 ` Andrea Arcangeli
2004-10-25 20:09 ` Robert White
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