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virtio-blk: Fix migration of queued requests 

in_sg[].iovec and out_sg[].ioved are pointer to (source) host memory and
therefore invalid after migration. When loading the device state we must
create a new mapping on the destination host.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf 2010-08-03 16:57:02 +02:00
parent 42fb2e0720
commit b6a4805b55
1 changed files with 5 additions and 0 deletions
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5
hw/virtio-blk.c
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@ -481,6 +481,11 @@ static int virtio_blk_load(QEMUFile *f, void *opaque, int version_id)
qemu_get_buffer(f, (unsigned char*)&req->elem, sizeof(req->elem)); qemu_get_buffer(f, (unsigned char*)&req->elem, sizeof(req->elem));
req->next = s->rq; req->next = s->rq;
s->rq = req; s->rq = req;
virtqueue_map_sg(req->elem.in_sg, req->elem.in_addr,
req->elem.in_num, 1);
virtqueue_map_sg(req->elem.out_sg, req->elem.out_addr,
req->elem.out_num, 0);
} }
return 0; return 0;