This series intends to setup the VFIO helper to allow binding notifiers on different IRQs.
For the NVMe use case, we only care about MSIX interrupts. To not disrupt other users, introduce the qemu_vfio_pci_init_msix_irqs function to initialize multiple MSIX IRQs and attach eventfd to them. Since RFC v5: - addressed Fam review comment (return EINVAL) - addressed Fam R-b tags - no more RFC :) Since RFC v4: - addressed Alex review comment: check ioctl(VFIO_DEVICE_SET_IRQS) return value Since RFC v3: - addressed Alex and Stefan review comments Since RFC v2: - new patch to report vfio-helpers is not supported on AA64/POWER (NVMe block driver series will follow). Based-on: <20200908115322.325832-1-kw...@redhat.com> (Block layer pending pull request) Philippe Mathieu-Daudé (4): util/vfio-helpers: Improve reporting unsupported IOMMU type util/vfio-helpers: Report error when IOMMU page size is not supported util/vfio-helpers: Introduce qemu_vfio_pci_init_msix_irqs() block/nvme: Use qemu_vfio_pci_init_msix_irqs() to initialize our IRQ include/qemu/vfio-helpers.h | 6 ++- block/nvme.c | 9 +++- util/vfio-helpers.c | 87 ++++++++++++++++++++++++++++++++++++- 3 files changed, 97 insertions(+), 5 deletions(-) -- 2.26.2
