On Wed, Sep 02, 2015 at 11:25:17AM +0800, Jason Wang wrote:
> Hi all:
>
> This series tries to fix the following issues:
>
> - qemu abort when trying to adjust endianness for zero length eventfd,
> this prevent fast mmio eventfd from being used in ppc. Fixing by
> skip the endianness adjustment for zero length eventfd.
> - 1.0 mmio is slow since it was using datamatch eventfd. Fixing this
> by usinng wildcard mmio eventfd, then we could get speed up through
> kernel fast mmio bus on ept capable machine.
> - 1.0 mmio is slow compared to pio (at least on some
> archs/setups). Fixing this by re-introducing pio notification
> capability. This will be useful for the arch/setups that fast mmio
> does not work.
> - Some virtio pci 1.0 fields were not migrated. This will cause
> unexpected behaviour if migrate during driver initialization. Fixing
> this by introduce a transport specific callback and get/put
> transport specific fields for virtio 1.0.
> - queue_enable read was broken. Fixing by set the queue_enable to true
> during guest write and clear it during reset.
>
> Please review.
> Thanks
Wanted to merge this, but it needs to be rebased to latest master.
Pls do, and repost.
> Changes from V1:
> - skip zero length eventfd endianness adjustment
> - don't use pci specific name ("modern") in virtio core, using "extra"
> instead and in virtio pci callback, using subsections which could
> allow us to extend the future improvement without changing the core.
> - don't check virtio_virtqueue_needed() in virtio_extra_state_needed()
> - drop the ppc 2.5 machine type patch
> - squash Eduardo's 2.5 machine type patches into this series
>
> Eduardo Habkost (3):
> q35: Move options common to all classes to pc_q35_machine_options()
> q35: Move options common to all classes to pc_i440fx_machine_options()
> pc: Introduce pc-*-2.5 machine classes
>
> Jason Wang (5):
> virtio-pci: fix 1.0 virtqueue migration
> memory: don't try to adjust endianness for zero length eventfd
> virtio-pci: use wildcard mmio eventfd for 1.0 notification cap
> virtio-pci: introduce pio notification capability for modern device
> virtio-pci: unbreak queue_enable read
>
> hw/i386/pc_piix.c | 18 ++-
> hw/i386/pc_q35.c | 20 +++-
> hw/virtio/virtio-pci.c | 266
> +++++++++++++++++++++++++++++++++++++----
> hw/virtio/virtio-pci.h | 30 +++--
> hw/virtio/virtio.c | 57 +++++++++
> include/hw/compat.h | 7 ++
> include/hw/i386/pc.h | 4 +
> include/hw/virtio/virtio-bus.h | 3 +
> memory.c | 8 +-
> 9 files changed, 375 insertions(+), 38 deletions(-)
>
> --
> 2.1.4
