From: William Lee Irwin III <wli@holomorphy.com>
To: "Srinivas G." <srinivasg@esntechnologies.co.in>
Cc: linux-kernel-Mailing-list <linux-kernel@vger.kernel.org>
Subject: Re: DMA memory allocation --how to more than 1 MB
Date: Tue, 19 Oct 2004 03:13:03 -0700 [thread overview]
Message-ID: <20041019101303.GK5607@holomorphy.com> (raw)
In-Reply-To: <4EE0CBA31942E547B99B3D4BFAB34811175F32@mail.esn.co.in>
On Tue, Oct 19, 2004 at 11:18:13AM +0530, Srinivas G. wrote:
> I have a doubt about allocating the DMA memory using kmalloc OR
> __get_dma_pages OR pci_alloc_consistent. I was unable to allocate the
> memory greater than 1 MB using any one of the above memory functions.
> Is there any other method which will allocate the DMA memory greater
> than 1 MB?
> My system configuration is: Red Hat 7.3 with 2.4.18-3 kernel version on
> IA32 platform.
This is not supported at runtime. If this is an absolute requirement,
using the bootmem.c physical memory reservation system from architecture-
specific initialization code is the way.
It's more likely that you should be using scatter/gather than that you
should try to carry that out.
-- wli
next prev parent reply other threads:[~2004-10-19 10:37 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-19 5:48 DMA memory allocation --how to more than 1 MB Srinivas G.
2004-10-19 10:13 ` William Lee Irwin III [this message]
2004-10-19 13:52 ` Christian Leber
2004-10-19 14:22 ` William Lee Irwin III
-- strict thread matches above, loose matches on Subject: below --
2004-10-19 6:28 Srinivas Naga Vutukuri
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