linux-kernel - Re: [PATCH 04/15] swiotlb: remove unnecessary swiotlb_bus_to

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Date:	Thu, 16 Jul 2009 13:40:18 +1000
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Becky Bruce <beckyb@...nel.crashing.org>
Cc:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>,
	linux-kernel@...r.kernel.org, linux-ia64@...r.kernel.org,
	linuxppc-dev@...abs.org, tony.luck@...el.com, x86@...nel.org
Subject: Re: [PATCH 04/15] swiotlb: remove unnecessary swiotlb_bus_to_virt

On Mon, 2009-07-13 at 21:17 -0500, Becky Bruce wrote:
> 
> phys_to_virt (also, virt_to_phys) is invalid for highmem addresses on  
> ppc. 

I would be surprised if x86 was any different here. Most of our highmem
implementation comes straight from x86 :-)

Cheers,
Ben.


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