From: James Bottomley <James.Bottomley@steeleye.com>
To: Arjan van de Ven <arjanv@redhat.com>
Cc: Jes Sorensen <jes@wildopensource.com>,
Linus Torvalds <torvalds@transmeta.com>,
"David S. Miller" <davem@redhat.com>,
Grant Grundler <grundler@dsl2.external.hp.com>,
Colin Ngam <cngam@sgi.com>, Jeremy Higdon <jeremy@sgi.com>,
Linux Kernel <linux-kernel@vger.kernel.org>,
linux-ia64@linuxia64.org, wildos@sgi.com
Subject: Re: [patch] support 64 bit pci_alloc_consistent
Date: 18 May 2003 09:28:45 -0500 [thread overview]
Message-ID: <1053268130.10811.31.camel@mulgrave> (raw)
In-Reply-To: <20030518142130.A30977@devserv.devel.redhat.com>
On Sun, 2003-05-18 at 09:21, Arjan van de Ven wrote:
> On Sun, May 18, 2003 at 09:17:48AM -0500, James Bottomley wrote:
> > (it uses 32 bit addr and 32 bit len descriptors, but reduces len to 24
> > bits to steal the extra byte for 7 bits extra addressing). However, it
> > is forced to request the full 64 bit address mask---I've never worked
> > out what will happen to it on a machine with more than 512GB memory.
>
> Uh??? right now even in 2.4 arbitrary bitmasks are supported for
> non-coherent memory.
Ah, my mistake. I keep forgetting there are two of these drivers in the
aic7xxx directory. The 79xx does have a 64 bit descriptor and sets the
full width. The 7xxx doesn't and sets a partial width.
Sorry,
James
next prev parent reply other threads:[~2003-05-18 14:16 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-05-18 4:09 [patch] support 64 bit pci_alloc_consistent Jes Sorensen
2003-05-18 5:46 ` David S. Miller
2003-05-18 6:00 ` Andre Hedrick
2003-05-18 9:29 ` Arjan van de Ven
2003-05-18 9:35 ` David S. Miller
2003-05-18 9:43 ` Arjan van de Ven
2003-05-18 17:22 ` [Linux-ia64] " Grant Grundler
2003-05-18 17:49 ` James Bottomley
2003-05-18 20:17 ` Grant Grundler
2003-05-18 21:26 ` James Bottomley
2003-05-19 16:26 ` Grant Grundler
2003-05-18 14:17 ` James Bottomley
2003-05-18 14:21 ` Arjan van de Ven
2003-05-18 14:28 ` James Bottomley [this message]
[not found] <mailman.1053231184.22467.linux-kernel2news@redhat.com>
2003-05-18 7:05 ` Pete Zaitcev
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