On Tue, 5 Jun 2012, 06:04:57 BST, Yinghai Lu <yinghai@xxxxxxxxxx> wrote: > > Linux has a long history of allocating bottom-up. Windows has a long > > history of allocating top-down. You're proposing a third alternative, > > allocating bottom-up starting at 4GB for 64-bit BARs. If we change > > this area, I would prefer something that follows Windows because I > > think it will be closer to what's been tested by Windows. Do you > > think your alternative is better? > > hope we can figure out how windows is making it work. > > Steve, Can you check if Windows is working with your test case ? > > If it works, we may try do the same thing from Linux, so you will not > need to append "pci=nocrs pci=alloc_high"... > Unfortunately I don't have a 64 bit version of Windows to test with. Vista(32 bit) fails to even boot when docked, hot-plugging fails to allocate resources, but at least doesn't crash. >From what I've read about the (64 bit) Windows allocation stragegy it's closer to Yinghai's method than the Linux default, preferring 64 bit resources (>4G) when possible. I'll try to find the specification document 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
