On Thu, Oct 08, 2015 at 10:59:10AM +0300, Gleb Natapov wrote: > I do not remember this been an issue when uio_generic was accepted > into the kernel. The reason was because it meant to be accessible by root > only.
No - because it does not need bus mastering. So it can be used safely with some devices. [mst@robin linux]$ git grep pci_set_master|wc -l 533 [mst@robin linux]$ git grep pci_enable|wc -l 1597 Looks like about 2/3 devices don't need to be bus masters. It's up to admin not to bind it to devices, and that is unfortunate, but manually binding an incorrect driver to a device is generally a hard problem to solve. > > There's also drivers/vfio/virqfd.c which deals > > with sending interrupts over eventfds correctly. > > > As opposite to this patch that deals with them incorrectly? In what way? cleanup on fd close is not handled. -- MST -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
