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vhost: fix memslot limit check 

Since used_memslots will be updated to the actual value after
registering memory listener for the first time, move the
memslots limit checking to the right place.

Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Jay Zhou <jianjay.zhou@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Jay Zhou 2018-02-27 15:10:04 +08:00 committed by Michael S. Tsirkin
parent c8945922be
commit 9e2a2a3e08
1 changed files with 12 additions and 7 deletions
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19
hw/virtio/vhost.c
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@ -1106,13 +1106,6 @@ int vhost_dev_init(struct vhost_dev *hdev, void *opaque,
goto fail;
}
if (used_memslots > hdev->vhost_ops->vhost_backend_memslots_limit(hdev)) {
error_report("vhost backend memory slots limit is less"
" than current number of present memory slots");
r = -1;
goto fail;
}
r = hdev->vhost_ops->vhost_set_owner(hdev);
if (r < 0) {
VHOST_OPS_DEBUG("vhost_set_owner failed");
@ -1192,6 +1185,18 @@ int vhost_dev_init(struct vhost_dev *hdev, void *opaque,
hdev->started = false;
memory_listener_register(&hdev->memory_listener, &address_space_memory);
QLIST_INSERT_HEAD(&vhost_devices, hdev, entry);
if (used_memslots > hdev->vhost_ops->vhost_backend_memslots_limit(hdev)) {
error_report("vhost backend memory slots limit is less"
" than current number of present memory slots");
r = -1;
if (busyloop_timeout) {
goto fail_busyloop;
} else {
goto fail;
}
}
return 0;
fail_busyloop: