On Thu, May 03, 2018 at 03:45:13PM -0600, Alex Williamson wrote: > With vfio ioeventfd support, we can program vfio-pci to perform a > specified BAR write when an eventfd is triggered. This allows the > KVM ioeventfd to be wired directly to vfio-pci, entirely avoiding > userspace handling for these events. On the same micro-benchmark > where the ioeventfd got us to almost 90% of performance versus > disabling the GeForce quirks, this gets us to within 95%. > > Signed-off-by: Alex Williamson <alex.williamson@xxxxxxxxxx> Reviewed-by: Peter Xu <peterx@xxxxxxxxxx> -- Peter Xu
