From: David Mosberger <davidm@hpl.hp.com>
To: linux-ia64@vger.kernel.org
Subject: Re: [Linux-ia64] patch to no longer use ia64's software mmu
Date: Tue, 04 Dec 2001 19:56:49 +0000 [thread overview]
Message-ID: <marc-linux-ia64-105590698805603@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-105590698805585@msgid-missing>
>>>>> On Tue, 4 Dec 2001 17:59:28 +0000 (GMT), Alan Cox <alan@lxorguk.ukuu.org.uk> said:
Alan> ISA DMA. While there is no ISA DMA on ia64 (thankfully) many
Alan> PCI cards have 26-31 bit limits.
>> We could do this if we there was a GFP_4GB zone. Now that 2.5
>> is open for business, it won't be long, right?
Alan> I don't see the need: GFP_DMA is the ISA DMA zone. pci_* API
Alan> is used by everyone else [for 2.5].
Without a 4GB zone, you may end up creating bounce buffers needlessly
for 32-bit capable DMA devices, no?
--david
next prev parent reply other threads:[~2001-12-04 19:56 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-12-03 21:00 [Linux-ia64] patch to no longer use ia64's software mmu Arjan van de Ven
2001-12-03 21:47 ` David Mosberger
2001-12-03 21:53 ` Arjan van de Ven
2001-12-04 18:14 ` David Mosberger
2001-12-04 18:19 ` Alan Cox
2001-12-04 19:55 ` David Mosberger
2001-12-04 19:56 ` David Mosberger
2001-12-04 19:56 ` David Mosberger [this message]
2001-12-04 20:22 ` David S. Miller
2001-12-04 20:32 ` David Mosberger
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