On Wednesday 11 February 2009 20:48:55 Avi Kivity wrote: > Sheng Yang wrote: > > This patch finally enable MSI-X. > > > > What we need for MSI-X: > > 1. Intercept one page in MMIO region of device. So that we can get guest > > desired MSI-X table and set up the real one. Now this have been done by > > guest, and transfer to kernel using ioctl KVM_SET_MSIX_NR and > > KVM_SET_MSIX_ENTRY. > > Looking at the patch, you're doing that in userspace. Good. > > > 2. The PCI spec allowed to change MSI-X table dynamically. That means, > > the OS can enable MSI-X, then mask one MSI-X entry, modify it, and unmask > > it. The patch didn't support this, and Linux also don't work in this way. > > What about Windows? Not sure. Don't have Windows driver to test... And only Vista and later support MSI/MSI-X, not sure it would be so aggressive... We can add some debug if such condition happened. -- regards Yang, Sheng -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
