On Thu, Nov 05, 2009 at 01:57:10PM +0100, Daniel Vetter wrote: > When starting a failsafe X session and starting glxgears (which should > cause plenty of interrupts to be generated), /proc/interrupts shows > absolutely no MSI interrupts arriving. There are no other devices in this > box using MSI interrupts. > > I've also tried with the lastest -linus git tree merged in, with the same > effects. > > Booting with "pci=nomsi" works around the issue. I dunno whether this is a > pci or radeon issue therefore I'm posting to both lists. lspci -v (as > root) is attached below. That sucks, and we need to fix it. It's almost certainly a chipset issue, so my suspicion falls primarily on this device: 04:01.0 PCI bridge: Advanced Micro Devices [AMD] AMD-8151 AGP Bridge (rev 14) (prog-if 00 [Normal decode]) We have a number of quirks to handle MSIs (both disabling their use, and programming the feature in bridges that the BIOS forgot to set up) on HyperTransport machines already; could you send both lspci -t and lspci -vvvnn (as root) to the linux-pci list? I don't believe this is a Radeon issue, so I think you can drop the cc to that list. -- 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
