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 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-kwolf@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