diff options
Diffstat (limited to 'drivers/virtio')
| -rw-r--r-- | drivers/virtio/virtio_mem.c | 47 |
1 files changed, 8 insertions, 39 deletions
diff --git a/drivers/virtio/virtio_mem.c b/drivers/virtio/virtio_mem.c index c08512fcea90..834b7c13ef3d 100644 --- a/drivers/virtio/virtio_mem.c +++ b/drivers/virtio/virtio_mem.c @@ -36,18 +36,10 @@ enum virtio_mem_mb_state { VIRTIO_MEM_MB_STATE_OFFLINE, /* Partially plugged, fully added to Linux, offline. */ VIRTIO_MEM_MB_STATE_OFFLINE_PARTIAL, - /* Fully plugged, fully added to Linux, online (!ZONE_MOVABLE). */ + /* Fully plugged, fully added to Linux, online. */ VIRTIO_MEM_MB_STATE_ONLINE, - /* Partially plugged, fully added to Linux, online (!ZONE_MOVABLE). */ + /* Partially plugged, fully added to Linux, online. */ VIRTIO_MEM_MB_STATE_ONLINE_PARTIAL, - /* - * Fully plugged, fully added to Linux, online (ZONE_MOVABLE). - * We are not allowed to allocate (unplug) parts of this block that - * are not movable (similar to gigantic pages). We will never allow - * to online OFFLINE_PARTIAL to ZONE_MOVABLE (as they would contain - * unmovable parts). - */ - VIRTIO_MEM_MB_STATE_ONLINE_MOVABLE, VIRTIO_MEM_MB_STATE_COUNT }; @@ -526,21 +518,10 @@ static bool virtio_mem_owned_mb(struct virtio_mem *vm, unsigned long mb_id) } static int virtio_mem_notify_going_online(struct virtio_mem *vm, - unsigned long mb_id, - enum zone_type zone) + unsigned long mb_id) { switch (virtio_mem_mb_get_state(vm, mb_id)) { case VIRTIO_MEM_MB_STATE_OFFLINE_PARTIAL: - /* - * We won't allow to online a partially plugged memory block - * to the MOVABLE zone - it would contain unmovable parts. - */ - if (zone == ZONE_MOVABLE) { - dev_warn_ratelimited(&vm->vdev->dev, - "memory block has holes, MOVABLE not supported\n"); - return NOTIFY_BAD; - } - return NOTIFY_OK; case VIRTIO_MEM_MB_STATE_OFFLINE: return NOTIFY_OK; default: @@ -560,7 +541,6 @@ static void virtio_mem_notify_offline(struct virtio_mem *vm, VIRTIO_MEM_MB_STATE_OFFLINE_PARTIAL); break; case VIRTIO_MEM_MB_STATE_ONLINE: - case VIRTIO_MEM_MB_STATE_ONLINE_MOVABLE: virtio_mem_mb_set_state(vm, mb_id, VIRTIO_MEM_MB_STATE_OFFLINE); break; @@ -579,24 +559,17 @@ static void virtio_mem_notify_offline(struct virtio_mem *vm, virtio_mem_retry(vm); } -static void virtio_mem_notify_online(struct virtio_mem *vm, unsigned long mb_id, - enum zone_type zone) +static void virtio_mem_notify_online(struct virtio_mem *vm, unsigned long mb_id) { unsigned long nb_offline; switch (virtio_mem_mb_get_state(vm, mb_id)) { case VIRTIO_MEM_MB_STATE_OFFLINE_PARTIAL: - BUG_ON(zone == ZONE_MOVABLE); virtio_mem_mb_set_state(vm, mb_id, VIRTIO_MEM_MB_STATE_ONLINE_PARTIAL); break; case VIRTIO_MEM_MB_STATE_OFFLINE: - if (zone == ZONE_MOVABLE) - virtio_mem_mb_set_state(vm, mb_id, - VIRTIO_MEM_MB_STATE_ONLINE_MOVABLE); - else - virtio_mem_mb_set_state(vm, mb_id, - VIRTIO_MEM_MB_STATE_ONLINE); + virtio_mem_mb_set_state(vm, mb_id, VIRTIO_MEM_MB_STATE_ONLINE); break; default: BUG(); @@ -675,7 +648,6 @@ static int virtio_mem_memory_notifier_cb(struct notifier_block *nb, const unsigned long start = PFN_PHYS(mhp->start_pfn); const unsigned long size = PFN_PHYS(mhp->nr_pages); const unsigned long mb_id = virtio_mem_phys_to_mb_id(start); - enum zone_type zone; int rc = NOTIFY_OK; if (!virtio_mem_overlaps_range(vm, start, size)) @@ -717,8 +689,7 @@ static int virtio_mem_memory_notifier_cb(struct notifier_block *nb, break; } vm->hotplug_active = true; - zone = page_zonenum(pfn_to_page(mhp->start_pfn)); - rc = virtio_mem_notify_going_online(vm, mb_id, zone); + rc = virtio_mem_notify_going_online(vm, mb_id); break; case MEM_OFFLINE: virtio_mem_notify_offline(vm, mb_id); @@ -726,8 +697,7 @@ static int virtio_mem_memory_notifier_cb(struct notifier_block *nb, mutex_unlock(&vm->hotplug_mutex); break; case MEM_ONLINE: - zone = page_zonenum(pfn_to_page(mhp->start_pfn)); - virtio_mem_notify_online(vm, mb_id, zone); + virtio_mem_notify_online(vm, mb_id); vm->hotplug_active = false; mutex_unlock(&vm->hotplug_mutex); break; @@ -1906,8 +1876,7 @@ static void virtio_mem_remove(struct virtio_device *vdev) if (vm->nb_mb_state[VIRTIO_MEM_MB_STATE_OFFLINE] || vm->nb_mb_state[VIRTIO_MEM_MB_STATE_OFFLINE_PARTIAL] || vm->nb_mb_state[VIRTIO_MEM_MB_STATE_ONLINE] || - vm->nb_mb_state[VIRTIO_MEM_MB_STATE_ONLINE_PARTIAL] || - vm->nb_mb_state[VIRTIO_MEM_MB_STATE_ONLINE_MOVABLE]) { + vm->nb_mb_state[VIRTIO_MEM_MB_STATE_ONLINE_PARTIAL]) { dev_warn(&vdev->dev, "device still has system memory added\n"); } else { virtio_mem_delete_resource(vm); |