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.
--
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
