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Date: Tue, 20 May 2008 23:15:16 +0100
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Scott Wood <scottwood@freescale.com>
Subject: Re: [PATCH] [POWERPC] Improve (in|out)_beXX() asm code
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> It looks like we rely on -fno-strict-aliasing to prevent reordering 
> ordinary memory accesses (such as to DMA descriptors) past the I/O 

DMA descriptors in main memory are dependant on cache behaviour anyway
and the dma_* operators should be the ones enforcing the needed behaviour.

Alan

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Date: Tue, 20 May 2008 23:15:16 +0100
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Scott Wood <scottwood@freescale.com>
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Subject: Re: [PATCH] [POWERPC] Improve (in|out)_beXX() asm code
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> It looks like we rely on -fno-strict-aliasing to prevent reordering 
> ordinary memory accesses (such as to DMA descriptors) past the I/O 

DMA descriptors in main memory are dependant on cache behaviour anyway
and the dma_* operators should be the ones enforcing the needed behaviour.

Alan