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 ... -- 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." -- 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
