On Fri, Jun 24, 2011 at 4:03 PM, Matthew Wilcox <matthew@xxxxxx> wrote: > On Fri, Jun 24, 2011 at 03:02:00PM -0600, Matthew Wilcox wrote: >> On Fri, Jun 24, 2011 at 03:49:04PM -0500, Xianghua Xiao wrote: >> > can you explain a little more on this, the 256MB is aligned of course, >> > why does the modifiable BAR needs an unaligned pci mem space? >> >> The device will claim any read from the base address to the base address >> + 512MB. If you have another device also claiming some of that space, >> undefined things will happen. >> >> Unless you've got the Resizable BAR Capability or some other way to tell >> the device to resize its BAR ... > > By the way, why are you asking again? Wasn't the "No" you got on April > 28th sufficient? > > -- > 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." > Last time the BAR size is fixed, on this new PCIE device I can actually change its BAR's size at runtime so the BAR is resizable. Thanks again, -- 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
