From: Pierre Ossman <drzeus-list@drzeus.cx>
To: Christoph Hellwig <hch@infradead.org>
Cc: rmk+lkml@arm.linux.org.uk, linux-kernel@vger.kernel.org,
Andi Kleen <ak@suse.de>
Subject: Re: [PATCH] [MMC] wbsd: use dma_alloc insted of kmalloc
Date: Sun, 25 Sep 2005 21:37:22 +0200 [thread overview]
Message-ID: <4336FC72.70103@drzeus.cx> (raw)
In-Reply-To: <20050925192958.GA25848@infradead.org>
Christoph Hellwig wrote:
> On Sun, Sep 25, 2005 at 09:16:23PM +0200, Pierre Ossman wrote:
>
>>x86_64 doesn't seem to like being passed pointers allocated using
>>kmalloc to the DMA mapping API.
>
>
> How so? There's not much else that could be passed to dma_map_single.
It kept oopsing on dma_map_single(). I'm guessing it expects som
structures to be present for its IOMMU.
http://list.drzeus.cx/pipermail/wbsd-devel/2005-September/000335.html
>
> Please try to fix x86_64 instead.
I'm not familiar with the x86_64 IOMMU, I don't even have access to the
hardware. So I figured I'd side-step the problem since there was an API
avaiable that works more reliably.
Andi might be more up to the task?
Rgds
Pierre
prev parent reply other threads:[~2005-09-25 19:37 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-09-25 19:16 [PATCH] [MMC] wbsd: use dma_alloc insted of kmalloc Pierre Ossman
2005-09-25 19:29 ` Christoph Hellwig
2005-09-25 19:37 ` Pierre Ossman [this message]
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