On Fri, 20 Oct 2017 14:50:44 +0200 "gregkh@xxxxxxxxxxxxxxxxxxx" <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > On Fri, Oct 06, 2017 at 07:57:00AM -0700, Stephen Hemminger wrote: > > On Fri, 6 Oct 2017 13:50:44 +0000 > > "Stahl, Manuel" <manuel.stahl@xxxxxxxxxxxxxxxxxxxxxxxx> wrote: > > > > > MSI(X) interrupts are not shared between devices. So when available > > > those should be preferred over legacy interrupts. > > > > > > Signed-off-by: Manuel Stahl <manuel.stahl@xxxxxxxxxxxxxxxxx> > > > --- > > > drivers/uio/uio_pci_dmem_genirq.c | 27 ++++++++++++++++++++------- > > > drivers/uio/uio_pci_generic.c | 24 ++++++++++++++++++------ > > > 2 files changed, 38 insertions(+), 13 deletions(-) > > > > The last time I tried to do MSI-X with pci-generic it got rejected > > by the maintainer. > > Hm, yeah, this would break users today that do not have msi-x, right? > > Not good, Manuel, how well did you test this? > > thanks, > > greg k-h Look at https://patchwork.kernel.org/patch/7303021/ The objection was more that UIO developers did not like that UIO was (already) being used for DMA without IOMMU, and MSI-x has DMA because of vector table. _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
