On Thu, Feb 17 2005, Jeff Garzik wrote:It looks like I will need to do a workaround for all SATA ATAPI devices: if the transfer is not a multiple of 4 bytes, pad it with an DMA 1-3 byte DMA segment.
Yeah we definitely need something like that. The optimal solution is to make sure that all requests are fed through the bounce logic like fs requests.
Could you elaborate? I'm not sure I follow.
I hope you're not suggesting leaking 1-3 bytes of random memory, past the end of the request, into the DMA stream?
Jeff
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