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qemu/hw/virtio
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Stefan Hajnoczi 1a8c091c4e virtio-scsi: restart DMA after iothread 
When the 'cont' command resumes guest execution the vm change state
handlers are invoked.  Unfortunately there is no explicit ordering
between classic qemu_add_vm_change_state_handler() callbacks.  When two
layers of code both use vm change state handlers, we don't control which
handler runs first.

virtio-scsi with iothreads hits a deadlock when a failed SCSI command is
restarted and completes before the iothread is re-initialized.

This patch uses the new qdev_add_vm_change_state_handler() API to
guarantee that virtio-scsi's virtio change state handler executes before
the SCSI bus children.  This way DMA is restarted after the iothread has
re-initialized.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2019-07-08 16:00:26 +02:00
..
Kconfig virtio-pmem: add virtio device 2019-07-02 12:59:22 -04:00
Makefile.objs virtio-pci: Proxy for virtio-pmem 2019-07-04 17:00:32 -04:00
trace-events hw/virtio/virtio-mmio: Convert DPRINTF to trace and log 2019-05-22 15:33:20 +02:00
vhost-backend.c vhost-net: revamp configure logic 2019-02-21 12:28:01 -05:00
vhost-scsi-pci.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
vhost-stub.c vhost-user: simplify vhost_user_init/vhost_user_cleanup 2019-03-12 21:22:31 -04:00
vhost-user-blk-pci.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
vhost-user-input-pci.c Add vhost-user-input-pci 2019-05-10 14:52:47 +02:00
vhost-user-scsi-pci.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
vhost-user.c vhost-user: add vhost_user_gpu_set_socket() 2019-05-29 06:29:07 +02:00
vhost-vsock-pci.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
vhost-vsock.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
vhost.c vhost: fix vhost_log size overflow during migration 2019-06-16 16:16:52 -04:00
virtio-9p-pci.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
virtio-balloon-pci.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
virtio-balloon.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
virtio-blk-pci.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
virtio-bus.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
virtio-crypto-pci.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
virtio-crypto.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
virtio-input-host-pci.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
virtio-input-pci.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
virtio-mmio.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
virtio-net-pci.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
virtio-pci.c virtio-pci: fix missing device properties 2019-07-04 17:00:32 -04:00
virtio-pci.h virtio-pci: Allow to specify additional interfaces for the base type 2019-07-02 12:59:22 -04:00
virtio-pmem-pci.c virtio-pci: Proxy for virtio-pmem 2019-07-04 17:00:32 -04:00
virtio-pmem-pci.h virtio-pci: Proxy for virtio-pmem 2019-07-04 17:00:32 -04:00
virtio-pmem.c virtio-pmem: add virtio device 2019-07-02 12:59:22 -04:00
virtio-rng-pci.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
virtio-rng.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
virtio-scsi-pci.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
virtio-serial-pci.c Include qemu/module.h where needed, drop it from qemu-common.h 2019-06-12 13:18:33 +02:00
virtio.c virtio-scsi: restart DMA after iothread 2019-07-08 16:00:26 +02:00