On Tue, Apr 02, 2013 at 06:04:00PM +0200, Joerg Roedel wrote: > I can certainly write a patch that works around your particular BIOS > bug. The problem is that such a fix will most certainly break other > systems. > > Unfortunatly there is no reliable way to fixup the IO-APIC-ID->DEVID > mapping at runtime when the BIOS messed it up. The only thing I can do > is to check for potential problems and disable the intremap feature > then, so that the system will at least boot.
Yeah, that could work: * do not issue message but try to fixup the mapping * if it works, fine * if it doesn't, then give up and disable intremap. And yes, I'm very sceptical about having a WARN_ON and it starts screaming on machines all over the place. Good luck explaining to people that you actually wanted to prod BIOS vendors to fix their monkey-on-crack code but they weren't listening in the first place. -- Regards/Gruss, Boris. Sent from a fat crate under my desk. Formatting is fine. -- _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu