diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/virtio/virtio_mem.c | 81 |
1 files changed, 44 insertions, 37 deletions
diff --git a/drivers/virtio/virtio_mem.c b/drivers/virtio/virtio_mem.c index bef8ad6bf466..2ba7e8d6ba8d 100644 --- a/drivers/virtio/virtio_mem.c +++ b/drivers/virtio/virtio_mem.c @@ -2392,41 +2392,10 @@ static int virtio_mem_init_vq(struct virtio_mem *vm) return 0; } -static int virtio_mem_init(struct virtio_mem *vm) +static int virtio_mem_init_hotplug(struct virtio_mem *vm) { const struct range pluggable_range = mhp_get_pluggable_range(true); uint64_t sb_size, addr; - uint16_t node_id; - - if (!vm->vdev->config->get) { - dev_err(&vm->vdev->dev, "config access disabled\n"); - return -EINVAL; - } - - /* - * We don't want to (un)plug or reuse any memory when in kdump. The - * memory is still accessible (but not mapped). - */ - if (is_kdump_kernel()) { - dev_warn(&vm->vdev->dev, "disabled in kdump kernel\n"); - return -EBUSY; - } - - /* Fetch all properties that can't change. */ - virtio_cread_le(vm->vdev, struct virtio_mem_config, plugged_size, - &vm->plugged_size); - virtio_cread_le(vm->vdev, struct virtio_mem_config, block_size, - &vm->device_block_size); - virtio_cread_le(vm->vdev, struct virtio_mem_config, node_id, - &node_id); - vm->nid = virtio_mem_translate_node_id(vm, node_id); - virtio_cread_le(vm->vdev, struct virtio_mem_config, addr, &vm->addr); - virtio_cread_le(vm->vdev, struct virtio_mem_config, region_size, - &vm->region_size); - - /* Determine the nid for the device based on the lowest address. */ - if (vm->nid == NUMA_NO_NODE) - vm->nid = memory_add_physaddr_to_nid(vm->addr); /* bad device setup - warn only */ if (!IS_ALIGNED(vm->addr, memory_block_size_bytes())) @@ -2496,10 +2465,6 @@ static int virtio_mem_init(struct virtio_mem *vm) vm->offline_threshold); } - dev_info(&vm->vdev->dev, "start address: 0x%llx", vm->addr); - dev_info(&vm->vdev->dev, "region size: 0x%llx", vm->region_size); - dev_info(&vm->vdev->dev, "device block size: 0x%llx", - (unsigned long long)vm->device_block_size); dev_info(&vm->vdev->dev, "memory block size: 0x%lx", memory_block_size_bytes()); if (vm->in_sbm) @@ -2508,10 +2473,52 @@ static int virtio_mem_init(struct virtio_mem *vm) else dev_info(&vm->vdev->dev, "big block size: 0x%llx", (unsigned long long)vm->bbm.bb_size); + + return 0; +} + +static int virtio_mem_init(struct virtio_mem *vm) +{ + uint16_t node_id; + + if (!vm->vdev->config->get) { + dev_err(&vm->vdev->dev, "config access disabled\n"); + return -EINVAL; + } + + /* + * We don't want to (un)plug or reuse any memory when in kdump. The + * memory is still accessible (but not mapped). + */ + if (is_kdump_kernel()) { + dev_warn(&vm->vdev->dev, "disabled in kdump kernel\n"); + return -EBUSY; + } + + /* Fetch all properties that can't change. */ + virtio_cread_le(vm->vdev, struct virtio_mem_config, plugged_size, + &vm->plugged_size); + virtio_cread_le(vm->vdev, struct virtio_mem_config, block_size, + &vm->device_block_size); + virtio_cread_le(vm->vdev, struct virtio_mem_config, node_id, + &node_id); + vm->nid = virtio_mem_translate_node_id(vm, node_id); + virtio_cread_le(vm->vdev, struct virtio_mem_config, addr, &vm->addr); + virtio_cread_le(vm->vdev, struct virtio_mem_config, region_size, + &vm->region_size); + + /* Determine the nid for the device based on the lowest address. */ + if (vm->nid == NUMA_NO_NODE) + vm->nid = memory_add_physaddr_to_nid(vm->addr); + + dev_info(&vm->vdev->dev, "start address: 0x%llx", vm->addr); + dev_info(&vm->vdev->dev, "region size: 0x%llx", vm->region_size); + dev_info(&vm->vdev->dev, "device block size: 0x%llx", + (unsigned long long)vm->device_block_size); if (vm->nid != NUMA_NO_NODE && IS_ENABLED(CONFIG_NUMA)) dev_info(&vm->vdev->dev, "nid: %d", vm->nid); - return 0; + return virtio_mem_init_hotplug(vm); } static int virtio_mem_create_resource(struct virtio_mem *vm) |