On Mon, Jun 06, 2016 at 06:53:28AM +0000, Koehrer Mathias (ETAS/ESW5) wrote: > Some uio based PCI drivers (e.g. uio_cif) do not work if the assigned > PCI memory resources are not page aligned. > By using the kernel option "pci=resource_alignment" it is possible to force > single PCI boards to use page alignment for their memory resources. > However, this is fairly cumbersome if multiple of these cards are in use. > This patch adds another kernel option "pci=resources_page_aligned" > that allows to set the default alignment of PCI memory resources to > be page aligned. > Overwriting of this default alignment via "pci=resource_alignment" is > still possible.
This seems like a very large hammer for a very specific problem with a card that seems to be not-in-spec (I can't find anywhere that requires resources to be "page" aligned in the PCI spec). Why not fix the firmware in these cards? thanks, greg k-h
