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From: David Mosberger <davidm@napali.hpl.hp.com>
To: arjanv@redhat.com
Cc: davidm@hpl.hp.com, Jeff Garzik <jgarzik@pobox.com>,
	Terence Ripperda <tripperda@nvidia.com>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: 32-bit dma allocations on 64-bit platforms
Date: Mon, 28 Jun 2004 23:13:12 -0700	[thread overview]
Message-ID: <16609.2168.754171.270072@napali.hpl.hp.com> (raw)
In-Reply-To: <1088234187.2805.3.camel@laptop.fenrus.com>

>>>>> On Sat, 26 Jun 2004 09:16:27 +0200, Arjan van de Ven <arjanv@redhat.com> said:

  Arjan> the real solution is an iommu of course, but the highmem
  Arjan> solution has quite some merit too..... I know you disagree
  Arjan> with me on that one though.

Yes, some merits and some faults.  The real solution is iommu or
64-bit capable devices.  Interesting that graphics controllers should
be last to get 64-bit DMA capability, considering how much more
complex they are than disk controllers or NICs.

	--david

  reply	other threads:[~2004-06-29  6:13 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-06-23 18:35 32-bit dma allocations on 64-bit platforms Terence Ripperda
2004-06-23 19:19 ` Jeff Garzik
2004-06-26  5:05   ` David Mosberger
2004-06-26  7:16     ` Arjan van de Ven
2004-06-29  6:13       ` David Mosberger [this message]
2004-06-29  6:55         ` Arjan van de Ven
2004-06-30  8:00         ` Jes Sorensen
2004-06-26  5:02 ` David Mosberger
     [not found] <2akPm-16l-65@gated-at.bofh.it>
2004-06-23 21:46 ` Andi Kleen
2004-06-24  6:18   ` Arjan van de Ven
2004-06-24 10:33     ` Andi Kleen
2004-06-24 13:48     ` Jesse Barnes
2004-06-24 14:39       ` Terence Ripperda
     [not found] <m3acyu6pwd.fsf@averell.firstfloor.org>
     [not found] ` <20040623213643.GB32456@hygelac>
2004-06-23 23:46   ` Andi Kleen
2004-06-24 11:13     ` Takashi Iwai
2004-06-24 14:45       ` Terence Ripperda
2004-06-24 15:41         ` Andrea Arcangeli
2004-06-24 15:44     ` Terence Ripperda
2004-06-24 18:51       ` Andi Kleen
2004-06-26  4:58         ` David Mosberger

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