mirror of https://gitee.com/openkylin/qemu.git
1a8c091c4e
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> |
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| .. | ||
| Kconfig | ||
| Makefile.objs | ||
| emulation.c | ||
| esp-pci.c | ||
| esp.c | ||
| lsi53c895a.c | ||
| megasas.c | ||
| mfi.h | ||
| mpi.h | ||
| mptconfig.c | ||
| mptendian.c | ||
| mptsas.c | ||
| mptsas.h | ||
| scsi-bus.c | ||
| scsi-disk.c | ||
| scsi-generic.c | ||
| spapr_vscsi.c | ||
| srp.h | ||
| trace-events | ||
| vhost-scsi-common.c | ||
| vhost-scsi.c | ||
| vhost-user-scsi.c | ||
| viosrp.h | ||
| virtio-scsi-dataplane.c | ||
| virtio-scsi.c | ||
| vmw_pvscsi.c | ||
| vmw_pvscsi.h | ||