On 02/14/2016 06:17 PM, Paolo Bonzini wrote: > Currently, dataplane threads are shut down during migration because > vring.c is not able to track dirty memory. However, all the relevant > parts of QEMU have been made thread-safe now, so we can drop vring.c > completely. With these patches, virtio-dataplane is now simply "virtio > with ioeventfd in a different AioContext".
Can you provide a branch somewhere? Then I can at least test even if I have no time review. > > Paolo Bonzini (8): > block-migration: acquire AioContext as necessary > vring: make vring_enable_notification return void > virtio: add AioContext-specific function for host notifiers > virtio: export vring_notify as virtio_should_notify > virtio-blk: fix "disabled data plane" mode > virtio-blk: do not use vring in dataplane > virtio-scsi: do not use vring in dataplane > vring: remove > > hw/block/dataplane/virtio-blk.c | 130 +----- > hw/block/dataplane/virtio-blk.h | 1 + > hw/block/virtio-blk.c | 51 +-- > hw/scsi/virtio-scsi-dataplane.c | 196 ++------- > hw/scsi/virtio-scsi.c | 52 +-- > hw/virtio/Makefile.objs | 1 - > hw/virtio/dataplane/Makefile.objs | 1 - > hw/virtio/dataplane/vring.c | 549 > -------------------------- > hw/virtio/virtio.c | 20 +- > include/hw/virtio/dataplane/vring-accessors.h | 75 ---- > include/hw/virtio/dataplane/vring.h | 51 --- > include/hw/virtio/virtio-blk.h | 4 +- > include/hw/virtio/virtio-scsi.h | 21 +- > include/hw/virtio/virtio.h | 3 + > migration/block.c | 61 ++- > trace-events | 3 - > 16 files changed, 134 insertions(+), 1085 deletions(-) > delete mode 100644 hw/virtio/dataplane/Makefile.objs > delete mode 100644 hw/virtio/dataplane/vring.c > delete mode 100644 include/hw/virtio/dataplane/vring-accessors.h > delete mode 100644 include/hw/virtio/dataplane/vring.h >
