On Fri, 10 Oct 2008 11:40:51 +0900 FUJITA Tomonori <fujita.tomonori@xxxxxxxxxxxxx> wrote: > On Thu, 09 Oct 2008 14:27:33 -0700 > Yinghai Lu <yinghai@xxxxxxxxxx> wrote: > > > Grant Grundler wrote: > > > On Wed, Oct 08, 2008 at 04:02:23PM -0700, Yinghai Lu wrote: > > >> so can find out what is DMA mask is used for pci devices in addition to > > >> default setting. > > > > > > I like the idea. I don't like the additional boot time output. > > > > > > But I'm thinking this could be an option to lspci. > > > lspci already knows about the /sys tree. Can PCI export the two masks > > > (dma_mask and dma_consistent_mask) and something like "lspci -td" > > > would dump those in a nice way? > > > > > in boot log, it could link with driver, pci info... > > > > > >> got: > > >> aacraid 0000:86:00.0: using 32bit DMA mask > > >> aacraid 0000:86:00.0: using 32bit consistent DMA mask > > >> aacraid 0000:86:00.0: using 64bit DMA mask > > >> aacraid 0000:86:00.0: using 64bit consistent DMA mask > > > > and aacraid do 32bit at first then 64bit... > > > > so put that in boot message could be useful too. > > IIRC, aacraid uses 32bit dma_mask at startup then it executes a > special command to get dma information from the card, and sets proper > dma_mask. So the above message is not wrong for aacraid, I think. Oh, what you wanted to say is, "pci uses 32bit dma_mask and dma_consistent_mask by default so aacraid doesn't need to set dma_mask and dma_consistent_mask at startup", then it's true. You can remove it. But it's just harmless unnecessary code. But again, I don't think this is a good reason to print such dma information for everyone at boot time. -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
