qemu: MSI-X support
cover qemu: MSI-X support
Here is the port of MSI-X support patches to upstream qemu. Anthony, you said you are willing to borrow a few cycles to help MSI-X go in through QEMU - could you please comment or commit?
This patchset adds generic support for MSI-X, adds implementation in APIC, and uses MSI-X in virtio-net. At Paul's suggestion, I use stl_phy to decouple APIC and MSI-X implementation.
This is on top of 'PATCHv2 make default_write_config use mask table' that I posted previously. I have included that patch here for completeness.
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MST Michael S. Tsirkin (11): qemu: make default_write_config use mask table qemu: capability bits in pci save/restore qemu: add routines to manage PCI capabilities qemu: helper routines for pci access. qemu: MSI-X support functions qemu: add flag to disable MSI-X by default qemu: minimal MSI/MSI-X implementation for PC qemu: add support for resizing regions qemu: virtio support for many interrupt vectors qemu: MSI-X support in virtio PCI qemu: request 3 vectors in virtio-net Makefile.target | 2 +- hw/apic.c | 50 ++++++- hw/msix.c | 426 ++++++++++++++++++++++++++++++++++++++++++++++++++++ hw/msix.h | 35 +++++ hw/pci.c | 295 +++++++++++++++++++----------------- hw/pci.h | 93 +++++++++++- hw/syborg_virtio.c | 13 ++- hw/virtio-net.c | 1 + hw/virtio-pci.c | 168 ++++++++++++++++----- hw/virtio.c | 63 ++++++-- hw/virtio.h | 10 +- qemu-options.hx | 2 + vl.c | 3 + 13 files changed, 952 insertions(+), 209 deletions(-) create mode 100644 hw/msix.c create mode 100644 hw/msix.h