Messages in this thread |  | | | Date | Fri, 10 Oct 2008 10:33:51 -0600 | | From | Matthew Wilcox <> | | Subject | Re: [PATCH] pci: print out DMA mask info |
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On Fri, Oct 10, 2008 at 09:19:08AM -0700, Yinghai Lu wrote: > anyway looking at dma_mask print out is interesting..., some uses 39, > and some use 44bits...
Yes, that reflects the limitations of the device. You can see many of the common ones in include/linux/dma-mapping.h.
By the way, commit 8f286c33f1e838d631f4a3260b33efce4bc5973c is a really bad idea. It is very helpful to see which bitmasks are used by real devices, and which ones aren't. It should be reverted, IMO.
-- Matthew Wilcox Intel Open Source Technology Centre "Bill, look, we understand that you're interested in selling us this operating system, but compare it to ours. We can't possibly take such a retrograde step."
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