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virtio-scsi: prepare migration format for multiqueue
In order to restore requests correctly from a multitude of virtqueues,we need to store the id of the request queue that each request camefrom.
Do this even for single-queue, by storing a hard-coded zero, to...
virtio-scsi: add multiqueue capability
Adding multiqueue is as simple as creating more than one virtqueues,and saving the queue number for each request.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
virtio-scsi: call unregister_savevm properly
This fixes a use-after-free when migrating after hot-unplug.
virtio-scsi: process control queue requests
Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
virtio-scsi: add migration support
virtio-scsi: Add basic request processing infrastructure
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
virtio-scsi: add basic SCSI bus operation
virtio-scsi: Add virtio-scsi stub device
Add a useless virtio SCSI HBA device:
qemu -device virtio-scsi-pci