From: "David S. Miller" <davem@redhat.com>
To: linux-ia64@vger.kernel.org
Subject: [Linux-ia64] Re: PCI DAC routines for SN
Date: Thu, 25 Apr 2002 00:17:32 +0000 [thread overview]
Message-ID: <marc-linux-ia64-105590701905521@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-105590701905493@msgid-missing>
From: Jesse Barnes <jbarnes@sgi.com>
Date: Wed, 24 Apr 2002 17:21:19 -0700
On Wed, Apr 24, 2002 at 05:08:08PM -0700, David S. Miller wrote:
> Devices use, EACH, something like a few kilobytes of consistent
> memory for descriptors.
I thought I did. The issue isn't keeping 4gb around, it's using up
the 32 bit mappings in the bridge for 64 bit capable cards.
Reread what I've quoted, these cards use almost nothing.
Consistent allocations account for maybe %2 to %6 of the total IOMMU
mappings on a fully loaded sparc64 bus. It doesn't even show up on
the radar.
I've rolled the numbers before, I know it isn't a problem.
next prev parent reply other threads:[~2002-04-25 0:17 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-04-22 22:34 [Linux-ia64] Re: PCI DAC routines for SN David Mosberger
2002-04-22 22:39 ` Jesse Barnes
2002-04-22 23:07 ` David Mosberger
2002-04-22 23:40 ` Jesse Barnes
2002-04-23 1:34 ` Grant Grundler
2002-04-23 21:11 ` Grant Grundler
2002-04-24 4:04 ` David S. Miller
2002-04-24 5:49 ` Jesse Barnes
2002-04-24 5:50 ` David S. Miller
2002-04-24 16:13 ` Grant Grundler
2002-04-24 17:39 ` David S. Miller
2002-04-24 17:40 ` David S. Miller
2002-04-24 19:45 ` Jesse Barnes
2002-04-24 23:13 ` Jesse Barnes
2002-04-24 23:53 ` David S. Miller
2002-04-25 0:08 ` David S. Miller
2002-04-25 0:11 ` Jesse Barnes
2002-04-25 0:17 ` David S. Miller [this message]
2002-04-25 0:21 ` Jesse Barnes
2002-04-25 0:36 ` Jesse Barnes
2002-04-25 0:43 ` David S. Miller
2002-04-25 1:00 ` David S. Miller
2002-04-25 1:01 ` Jesse Barnes
2002-04-25 1:22 ` Jesse Barnes
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