On Tue, Oct 06, 2015 at 08:17:35PM +0300, Vlad Zolotarov wrote: > This series add support for MSI and MSI-X interrupts to uio_pci_generic > driver. > > Currently uio_pci_generic demands INT#x interrupts source be available. > However > there are devices that simply don't have INT#x capability, for instance SR-IOV > VF devices that simply don't have INT#x capability. For such devices > uio_pci_generic will simply fail (more specifically its probe() will fail). > > When IOMMU is either not available (e.g. Amazon EC2) or not acceptable due to > performance overhead and thus VFIO is not an option users that develop > user-space drivers are left without any option but to develop some proprietary > UIO drivers (e.g. igb_uio driver in Intel's DPDK) just to be able to use UIO > infrastructure. > > This series provides a generic solution for this problem while preserving the > original behaviour for devices for which the original uio_pci_generic had > worked > before (i.e. INT#x will be used by default). > > New in v5: > - Expanded the commitlog on PATCH1.
Looks like you didn't attempt to address any of my review comments. I don't intend to review this until you do. > New in v4: > - Use portable __u32 and __s32 types from asm/types.h for > defining uio_pci_generic_irq_set fields. > - Use proper _IO macros for defining read and write ioctl() > commands. > - Moved bars mapping setting into a separate patch. > - Update uio_pci_generic example in uio-howto.tmpl. > > New in v3: > - Add __iomem qualifier to temp buffer receiving ioremap value. > > New in v2: > - Added #include <linux/uaccess.h> to uio_pci_generic.c > > > Vlad Zolotarov (4): > uio: add ioctl support > uio_pci_generic: properly initialize PCI bars mappings towards UIO > uio_pci_generic: add MSI/MSI-X support > Documentation: update uio-howto > > Documentation/DocBook/uio-howto.tmpl | 139 ++++++++++-- > drivers/uio/uio.c | 15 ++ > drivers/uio/uio_pci_generic.c | 409 > +++++++++++++++++++++++++++++++++-- > include/linux/uio_driver.h | 3 + > include/uapi/linux/uio_pci_generic.h | 51 +++++ > 5 files changed, 574 insertions(+), 43 deletions(-) > create mode 100644 include/uapi/linux/uio_pci_generic.h > > -- > 2.1.0 -- 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/
