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[Qemu-devel] [PATCH v7 1/2] vhost: fix memslot limit check
From: |
Jay Zhou |
Subject: |
[Qemu-devel] [PATCH v7 1/2] vhost: fix memslot limit check |
Date: |
Mon, 22 Jan 2018 14:57:49 +0800 |
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 <address@hidden>
Signed-off-by: Jay Zhou <address@hidden>
---
hw/virtio/vhost.c | 19 ++++++++++++-------
1 file changed, 12 insertions(+), 7 deletions(-)
diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c
index 386aef8..1ac512e 100644
--- a/hw/virtio/vhost.c
+++ b/hw/virtio/vhost.c
@@ -1251,13 +1251,6 @@ 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");
@@ -1339,6 +1332,18 @@ int vhost_dev_init(struct vhost_dev *hdev, void *opaque,
hdev->memory_changed = 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:
--
1.8.3.1