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virtio-mem: mark device ready before registering callbacks in kdump mode

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After the callbacks are registered we may immediately get a callback. So
mark the device ready before registering the callbacks.

Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20241204125444.1734652-10-david@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
David Hildenbrand 2024-12-04 13:54:40 +01:00 • committed by Michael S. Tsirkin
parent 7ad4d1f6e6
commit a9403425b3
1 changed files with 3 additions and 2 deletions
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5
drivers/virtio/virtio_mem.c
View file

@ -2648,6 +2648,7 @@ static int virtio_mem_init_hotplug(struct virtio_mem *vm)
if (rc)
goto out_unreg_pm;
virtio_device_ready(vm->vdev);
return 0;
out_unreg_pm:
unregister_pm_notifier(&vm->pm_notifier);
@ -2729,6 +2730,8 @@ static bool virtio_mem_vmcore_pfn_is_ram(struct vmcore_cb *cb,
static int virtio_mem_init_kdump(struct virtio_mem *vm)
{
/* We must be prepared to receive a callback immediately. */
virtio_device_ready(vm->vdev);
#ifdef CONFIG_PROC_VMCORE
dev_info(&vm->vdev->dev, "memory hot(un)plug disabled in kdump kernel\n");
vm->vmcore_cb.pfn_is_ram = virtio_mem_vmcore_pfn_is_ram;
@ -2870,8 +2873,6 @@ static int virtio_mem_probe(struct virtio_device *vdev)
if (rc)
goto out_del_vq;
virtio_device_ready(vdev);
/* trigger a config update to start processing the requested_size */
if (!vm->in_kdump) {
atomic_set(&vm->config_changed, 1);