From: William Lee Irwin III <wli@holomorphy.com>
To: "David S. Miller" <davem@davemloft.net>
Cc: Andrea Arcangeli <andrea@suse.de>,
linux-kernel@vger.kernel.org, tglx@linutronix.de, akpm@osdl.org
Subject: Re: VM fixes [4/4]
Date: Fri, 24 Dec 2004 15:52:05 -0800 [thread overview]
Message-ID: <20041224235205.GX771@holomorphy.com> (raw)
In-Reply-To: <20041224212513.GV771@holomorphy.com>
On Fri, 24 Dec 2004 19:22:19 +0100 Andrea Arcangeli <andrea@suse.de> wrote:
>>> If those old cpus really supported smp in linux, then fixing this bit is
>>> trivial, just change it to short. Do they support short at least?
On Fri, Dec 24, 2004 at 12:55:04PM -0800, David S. Miller wrote:
>> No, they do not. The smallest atomic unit is one 32-bit word.
>> And yes there are SMP systems using these chips.
On Fri, Dec 24, 2004 at 01:25:13PM -0800, William Lee Irwin III wrote:
> Would systems described as ev56 by /proc/cpuinfo have such chips?
I had this one in particular in mind:
# cat /proc/cpuinfo
cpu : Alpha
cpu model : EV56
cpu variation : 7
cpu revision : 0
cpu serial number :
system type : Rawhide
system variation : Tincup
system revision : 0
system serial number : NI93009695
cycle frequency [Hz] : 532819266 est.
timer frequency [Hz] : 1200.00
page size [bytes] : 8192
phys. address bits : 40
max. addr. space # : 127
BogoMIPS : 910.04
kernel unaligned acc : 29 (pc=fffffc00003158a8,va=fffffc004dafbd51)
user unaligned acc : 0 (pc=0,va=0)
platform string : AlphaServer 1200 5/533 4MB
cpus detected : 2
cpus active : 2
cpu active mask : 0000000000000003
L1 Icache : 8K, 1-way, 32b line
L1 Dcache : 8K, 1-way, 32b line
L2 cache : 96K, 3-way, 64b line
L3 cache : 4096K, 1-way, 64b line
#
-- wli
next prev parent reply other threads:[~2004-12-24 23:52 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-24 17:41 VM fixes [4/4] Andrea Arcangeli
2004-12-24 18:01 ` David S. Miller
2004-12-24 18:22 ` Andrea Arcangeli
2004-12-24 20:55 ` David S. Miller
2004-12-24 21:25 ` William Lee Irwin III
2004-12-24 23:52 ` William Lee Irwin III [this message]
2004-12-24 23:55 ` David S. Miller
2004-12-24 23:41 ` Linus Torvalds
2004-12-25 2:27 ` Andrea Arcangeli
2004-12-25 3:24 ` VM fixes [PF_MEMDIE to TIF_MEMDIE] [5/4] Andrea Arcangeli
2004-12-25 14:53 ` VM fixes [->used_math to PF_USED_MATH] [6/4] Andrea Arcangeli
2004-12-27 7:03 ` Andy Isaacson
2005-01-02 15:41 ` Andrea Arcangeli
2005-01-08 17:17 ` William Lee Irwin III
2004-12-25 0:06 ` VM fixes [4/4] Mitchell Blank Jr
2004-12-25 2:37 ` Andrea Arcangeli
2004-12-24 23:32 ` Linus Torvalds
2004-12-27 13:38 ` Rik van Riel
2004-12-28 9:42 ` Thomas Gleixner
2005-01-02 15:51 ` Andrea Arcangeli
2005-01-02 16:44 ` Rik van Riel
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