david ahern wrote: > I've run a lot more tests: > > > - if I remove the "if (!change) return" optimization from pci_set_irq the > rtl8139 nic worked fine for 16+ hours. I'm not recommending this as a fix, > just > confirming that the problem goes away. > >
Interesting. What can cause this to happen? - some non-pci device shares the same irq (unlikely) - the pci link sharing is broken. Is the eth0 irq shared? Please post /proc/interrupts. - the in-kernel ioapic is buggy and needs the extra kicking the optimization prevents. Can be checked by re-adding the optimization to kvm_ioapic_set_irq() (keeping it removed in qemu). If it works, the problem is in userspace. If it fails, the problem is in the kernel. Something like static int old_level[16]; if (level == old_level[irq]) return; old_level[irq] = level; -- Do not meddle in the internals of kernels, for they are subtle and quick to panic. ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel