From: jbarnes@sgi.com (Jesse Barnes)
To: linux-ia64@vger.kernel.org
Subject: Re: [PATCH] Fix 64 bit DMA mapping problem with PCI cards on SN2
Date: Sat, 21 Feb 2004 04:42:10 +0000 [thread overview]
Message-ID: <20040221044210.GA28510@sgi.com> (raw)
In-Reply-To: <20040221010841.GC530871@sgi.com>
David, it looks like we accidentally dropped a hunk in the DMA mapping
code. Can you please push this patch to Linus soon?
Thanks,
Jesse
On Fri, Feb 20, 2004 at 05:08:41PM -0800, Jeremy Higdon wrote:
> PCI cards were forced to 32 bit addresses. There is significant
> extra overhead to DMA setup with 32 bit, and it is fairly easy to
> run out of mapping resources.
>
> This patch reenables 64 bit DMA mapping for PCI cards.
prev parent reply other threads:[~2004-02-21 4:42 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-02-21 1:08 [PATCH] Fix 64 bit DMA mapping problem with PCI cards on SN2 Jeremy Higdon
2004-02-21 4:42 ` Jesse Barnes [this message]
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