On Mon, Aug 21, 2023 at 12:16:59AM -0700, Huang Jiaqing wrote: > The existing IO page fault handler locates the PCI device by calling > pci_get_domain_bus_and_slot(), which searches the list of all PCI > devices until the desired PCI device is found. This is inefficient > because the algorithm efficiency of searching a list is O(n). In the > critical path of handling an IO page fault, this can cause a significant > performance bottleneck. Can you elaborate a little more on the 'significant performance bottleneck' part? Where do you see this as a problem? Regards, Joerg
