Lines Matching refs:vm
278 static void virtio_mem_retry(struct virtio_mem *vm);
279 static int virtio_mem_create_resource(struct virtio_mem *vm);
280 static void virtio_mem_delete_resource(struct virtio_mem *vm);
286 static int register_virtio_mem_device(struct virtio_mem *vm) in register_virtio_mem_device() argument
295 list_add_rcu(&vm->next, &virtio_mem_devices); in register_virtio_mem_device()
305 static void unregister_virtio_mem_device(struct virtio_mem *vm) in unregister_virtio_mem_device() argument
309 list_del_rcu(&vm->next); in unregister_virtio_mem_device()
336 static unsigned long virtio_mem_phys_to_bb_id(struct virtio_mem *vm, in virtio_mem_phys_to_bb_id() argument
339 return addr / vm->bbm.bb_size; in virtio_mem_phys_to_bb_id()
345 static uint64_t virtio_mem_bb_id_to_phys(struct virtio_mem *vm, in virtio_mem_bb_id_to_phys() argument
348 return bb_id * vm->bbm.bb_size; in virtio_mem_bb_id_to_phys()
354 static unsigned long virtio_mem_phys_to_sb_id(struct virtio_mem *vm, in virtio_mem_phys_to_sb_id() argument
360 return (addr - mb_addr) / vm->sbm.sb_size; in virtio_mem_phys_to_sb_id()
366 static void virtio_mem_bbm_set_bb_state(struct virtio_mem *vm, in virtio_mem_bbm_set_bb_state() argument
370 const unsigned long idx = bb_id - vm->bbm.first_bb_id; in virtio_mem_bbm_set_bb_state()
373 old_state = vm->bbm.bb_states[idx]; in virtio_mem_bbm_set_bb_state()
374 vm->bbm.bb_states[idx] = state; in virtio_mem_bbm_set_bb_state()
376 BUG_ON(vm->bbm.bb_count[old_state] == 0); in virtio_mem_bbm_set_bb_state()
377 vm->bbm.bb_count[old_state]--; in virtio_mem_bbm_set_bb_state()
378 vm->bbm.bb_count[state]++; in virtio_mem_bbm_set_bb_state()
384 static enum virtio_mem_bbm_bb_state virtio_mem_bbm_get_bb_state(struct virtio_mem *vm, in virtio_mem_bbm_get_bb_state() argument
387 return vm->bbm.bb_states[bb_id - vm->bbm.first_bb_id]; in virtio_mem_bbm_get_bb_state()
393 static int virtio_mem_bbm_bb_states_prepare_next_bb(struct virtio_mem *vm) in virtio_mem_bbm_bb_states_prepare_next_bb() argument
395 unsigned long old_bytes = vm->bbm.next_bb_id - vm->bbm.first_bb_id; in virtio_mem_bbm_bb_states_prepare_next_bb()
401 if (vm->bbm.bb_states && old_pages == new_pages) in virtio_mem_bbm_bb_states_prepare_next_bb()
408 mutex_lock(&vm->hotplug_mutex); in virtio_mem_bbm_bb_states_prepare_next_bb()
409 if (vm->bbm.bb_states) in virtio_mem_bbm_bb_states_prepare_next_bb()
410 memcpy(new_array, vm->bbm.bb_states, old_pages * PAGE_SIZE); in virtio_mem_bbm_bb_states_prepare_next_bb()
411 vfree(vm->bbm.bb_states); in virtio_mem_bbm_bb_states_prepare_next_bb()
412 vm->bbm.bb_states = new_array; in virtio_mem_bbm_bb_states_prepare_next_bb()
413 mutex_unlock(&vm->hotplug_mutex); in virtio_mem_bbm_bb_states_prepare_next_bb()
419 for (_bb_id = vm->bbm.first_bb_id; \
420 _bb_id < vm->bbm.next_bb_id && _vm->bbm.bb_count[_state]; \
425 for (_bb_id = vm->bbm.next_bb_id - 1; \
426 _bb_id >= vm->bbm.first_bb_id && _vm->bbm.bb_count[_state]; \
433 static void virtio_mem_sbm_set_mb_state(struct virtio_mem *vm, in virtio_mem_sbm_set_mb_state() argument
436 const unsigned long idx = mb_id - vm->sbm.first_mb_id; in virtio_mem_sbm_set_mb_state()
439 old_state = vm->sbm.mb_states[idx]; in virtio_mem_sbm_set_mb_state()
440 vm->sbm.mb_states[idx] = state; in virtio_mem_sbm_set_mb_state()
442 BUG_ON(vm->sbm.mb_count[old_state] == 0); in virtio_mem_sbm_set_mb_state()
443 vm->sbm.mb_count[old_state]--; in virtio_mem_sbm_set_mb_state()
444 vm->sbm.mb_count[state]++; in virtio_mem_sbm_set_mb_state()
450 static uint8_t virtio_mem_sbm_get_mb_state(struct virtio_mem *vm, in virtio_mem_sbm_get_mb_state() argument
453 const unsigned long idx = mb_id - vm->sbm.first_mb_id; in virtio_mem_sbm_get_mb_state()
455 return vm->sbm.mb_states[idx]; in virtio_mem_sbm_get_mb_state()
461 static int virtio_mem_sbm_mb_states_prepare_next_mb(struct virtio_mem *vm) in virtio_mem_sbm_mb_states_prepare_next_mb() argument
463 int old_pages = PFN_UP(vm->sbm.next_mb_id - vm->sbm.first_mb_id); in virtio_mem_sbm_mb_states_prepare_next_mb()
464 int new_pages = PFN_UP(vm->sbm.next_mb_id - vm->sbm.first_mb_id + 1); in virtio_mem_sbm_mb_states_prepare_next_mb()
467 if (vm->sbm.mb_states && old_pages == new_pages) in virtio_mem_sbm_mb_states_prepare_next_mb()
474 mutex_lock(&vm->hotplug_mutex); in virtio_mem_sbm_mb_states_prepare_next_mb()
475 if (vm->sbm.mb_states) in virtio_mem_sbm_mb_states_prepare_next_mb()
476 memcpy(new_array, vm->sbm.mb_states, old_pages * PAGE_SIZE); in virtio_mem_sbm_mb_states_prepare_next_mb()
477 vfree(vm->sbm.mb_states); in virtio_mem_sbm_mb_states_prepare_next_mb()
478 vm->sbm.mb_states = new_array; in virtio_mem_sbm_mb_states_prepare_next_mb()
479 mutex_unlock(&vm->hotplug_mutex); in virtio_mem_sbm_mb_states_prepare_next_mb()
500 static int virtio_mem_sbm_sb_state_bit_nr(struct virtio_mem *vm, in virtio_mem_sbm_sb_state_bit_nr() argument
503 return (mb_id - vm->sbm.first_mb_id) * vm->sbm.sbs_per_mb + sb_id; in virtio_mem_sbm_sb_state_bit_nr()
511 static void virtio_mem_sbm_set_sb_plugged(struct virtio_mem *vm, in virtio_mem_sbm_set_sb_plugged() argument
515 const int bit = virtio_mem_sbm_sb_state_bit_nr(vm, mb_id, sb_id); in virtio_mem_sbm_set_sb_plugged()
517 __bitmap_set(vm->sbm.sb_states, bit, count); in virtio_mem_sbm_set_sb_plugged()
525 static void virtio_mem_sbm_set_sb_unplugged(struct virtio_mem *vm, in virtio_mem_sbm_set_sb_unplugged() argument
529 const int bit = virtio_mem_sbm_sb_state_bit_nr(vm, mb_id, sb_id); in virtio_mem_sbm_set_sb_unplugged()
531 __bitmap_clear(vm->sbm.sb_states, bit, count); in virtio_mem_sbm_set_sb_unplugged()
537 static bool virtio_mem_sbm_test_sb_plugged(struct virtio_mem *vm, in virtio_mem_sbm_test_sb_plugged() argument
541 const int bit = virtio_mem_sbm_sb_state_bit_nr(vm, mb_id, sb_id); in virtio_mem_sbm_test_sb_plugged()
544 return test_bit(bit, vm->sbm.sb_states); in virtio_mem_sbm_test_sb_plugged()
547 return find_next_zero_bit(vm->sbm.sb_states, bit + count, bit) >= in virtio_mem_sbm_test_sb_plugged()
554 static bool virtio_mem_sbm_test_sb_unplugged(struct virtio_mem *vm, in virtio_mem_sbm_test_sb_unplugged() argument
558 const int bit = virtio_mem_sbm_sb_state_bit_nr(vm, mb_id, sb_id); in virtio_mem_sbm_test_sb_unplugged()
561 return find_next_bit(vm->sbm.sb_states, bit + count, bit) >= in virtio_mem_sbm_test_sb_unplugged()
569 static int virtio_mem_sbm_first_unplugged_sb(struct virtio_mem *vm, in virtio_mem_sbm_first_unplugged_sb() argument
572 const int bit = virtio_mem_sbm_sb_state_bit_nr(vm, mb_id, 0); in virtio_mem_sbm_first_unplugged_sb()
574 return find_next_zero_bit(vm->sbm.sb_states, in virtio_mem_sbm_first_unplugged_sb()
575 bit + vm->sbm.sbs_per_mb, bit) - bit; in virtio_mem_sbm_first_unplugged_sb()
581 static int virtio_mem_sbm_sb_states_prepare_next_mb(struct virtio_mem *vm) in virtio_mem_sbm_sb_states_prepare_next_mb() argument
583 const unsigned long old_nb_mb = vm->sbm.next_mb_id - vm->sbm.first_mb_id; in virtio_mem_sbm_sb_states_prepare_next_mb()
584 const unsigned long old_nb_bits = old_nb_mb * vm->sbm.sbs_per_mb; in virtio_mem_sbm_sb_states_prepare_next_mb()
585 const unsigned long new_nb_bits = (old_nb_mb + 1) * vm->sbm.sbs_per_mb; in virtio_mem_sbm_sb_states_prepare_next_mb()
590 if (vm->sbm.sb_states && old_pages == new_pages) in virtio_mem_sbm_sb_states_prepare_next_mb()
597 mutex_lock(&vm->hotplug_mutex); in virtio_mem_sbm_sb_states_prepare_next_mb()
598 if (vm->sbm.sb_states) in virtio_mem_sbm_sb_states_prepare_next_mb()
599 memcpy(new_bitmap, vm->sbm.sb_states, old_pages * PAGE_SIZE); in virtio_mem_sbm_sb_states_prepare_next_mb()
601 old_bitmap = vm->sbm.sb_states; in virtio_mem_sbm_sb_states_prepare_next_mb()
602 vm->sbm.sb_states = new_bitmap; in virtio_mem_sbm_sb_states_prepare_next_mb()
603 mutex_unlock(&vm->hotplug_mutex); in virtio_mem_sbm_sb_states_prepare_next_mb()
613 static bool virtio_mem_could_add_memory(struct virtio_mem *vm, uint64_t size) in virtio_mem_could_add_memory() argument
615 if (WARN_ON_ONCE(size > vm->offline_threshold)) in virtio_mem_could_add_memory()
618 return atomic64_read(&vm->offline_size) + size <= vm->offline_threshold; in virtio_mem_could_add_memory()
629 static int virtio_mem_add_memory(struct virtio_mem *vm, uint64_t addr, in virtio_mem_add_memory() argument
638 if (!vm->resource_name) { in virtio_mem_add_memory()
639 vm->resource_name = kstrdup_const("System RAM (virtio_mem)", in virtio_mem_add_memory()
641 if (!vm->resource_name) in virtio_mem_add_memory()
645 dev_dbg(&vm->vdev->dev, "adding memory: 0x%llx - 0x%llx\n", addr, in virtio_mem_add_memory()
648 atomic64_add(size, &vm->offline_size); in virtio_mem_add_memory()
649 rc = add_memory_driver_managed(vm->mgid, addr, size, vm->resource_name, in virtio_mem_add_memory()
652 atomic64_sub(size, &vm->offline_size); in virtio_mem_add_memory()
653 dev_warn(&vm->vdev->dev, "adding memory failed: %d\n", rc); in virtio_mem_add_memory()
665 static int virtio_mem_sbm_add_mb(struct virtio_mem *vm, unsigned long mb_id) in virtio_mem_sbm_add_mb() argument
670 return virtio_mem_add_memory(vm, addr, size); in virtio_mem_sbm_add_mb()
676 static int virtio_mem_bbm_add_bb(struct virtio_mem *vm, unsigned long bb_id) in virtio_mem_bbm_add_bb() argument
678 const uint64_t addr = virtio_mem_bb_id_to_phys(vm, bb_id); in virtio_mem_bbm_add_bb()
679 const uint64_t size = vm->bbm.bb_size; in virtio_mem_bbm_add_bb()
681 return virtio_mem_add_memory(vm, addr, size); in virtio_mem_bbm_add_bb()
693 static int virtio_mem_remove_memory(struct virtio_mem *vm, uint64_t addr, in virtio_mem_remove_memory() argument
698 dev_dbg(&vm->vdev->dev, "removing memory: 0x%llx - 0x%llx\n", addr, in virtio_mem_remove_memory()
702 atomic64_sub(size, &vm->offline_size); in virtio_mem_remove_memory()
707 virtio_mem_retry(vm); in virtio_mem_remove_memory()
709 dev_dbg(&vm->vdev->dev, "removing memory failed: %d\n", rc); in virtio_mem_remove_memory()
717 static int virtio_mem_sbm_remove_mb(struct virtio_mem *vm, unsigned long mb_id) in virtio_mem_sbm_remove_mb() argument
722 return virtio_mem_remove_memory(vm, addr, size); in virtio_mem_sbm_remove_mb()
733 static int virtio_mem_offline_and_remove_memory(struct virtio_mem *vm, in virtio_mem_offline_and_remove_memory() argument
739 dev_dbg(&vm->vdev->dev, in virtio_mem_offline_and_remove_memory()
745 atomic64_sub(size, &vm->offline_size); in virtio_mem_offline_and_remove_memory()
750 virtio_mem_retry(vm); in virtio_mem_offline_and_remove_memory()
753 dev_dbg(&vm->vdev->dev, "offlining and removing memory failed: %d\n", rc); in virtio_mem_offline_and_remove_memory()
766 static int virtio_mem_sbm_offline_and_remove_mb(struct virtio_mem *vm, in virtio_mem_sbm_offline_and_remove_mb() argument
772 return virtio_mem_offline_and_remove_memory(vm, addr, size); in virtio_mem_sbm_offline_and_remove_mb()
781 static int virtio_mem_sbm_try_remove_unplugged_mb(struct virtio_mem *vm, in virtio_mem_sbm_try_remove_unplugged_mb() argument
790 if (!virtio_mem_sbm_test_sb_unplugged(vm, mb_id, 0, vm->sbm.sbs_per_mb)) in virtio_mem_sbm_try_remove_unplugged_mb()
794 mutex_unlock(&vm->hotplug_mutex); in virtio_mem_sbm_try_remove_unplugged_mb()
795 rc = virtio_mem_sbm_offline_and_remove_mb(vm, mb_id); in virtio_mem_sbm_try_remove_unplugged_mb()
796 mutex_lock(&vm->hotplug_mutex); in virtio_mem_sbm_try_remove_unplugged_mb()
798 virtio_mem_sbm_set_mb_state(vm, mb_id, in virtio_mem_sbm_try_remove_unplugged_mb()
807 static int virtio_mem_bbm_offline_and_remove_bb(struct virtio_mem *vm, in virtio_mem_bbm_offline_and_remove_bb() argument
810 const uint64_t addr = virtio_mem_bb_id_to_phys(vm, bb_id); in virtio_mem_bbm_offline_and_remove_bb()
811 const uint64_t size = vm->bbm.bb_size; in virtio_mem_bbm_offline_and_remove_bb()
813 return virtio_mem_offline_and_remove_memory(vm, addr, size); in virtio_mem_bbm_offline_and_remove_bb()
819 static void virtio_mem_retry(struct virtio_mem *vm) in virtio_mem_retry() argument
823 spin_lock_irqsave(&vm->removal_lock, flags); in virtio_mem_retry()
824 if (!vm->removing) in virtio_mem_retry()
825 queue_work(system_freezable_wq, &vm->wq); in virtio_mem_retry()
826 spin_unlock_irqrestore(&vm->removal_lock, flags); in virtio_mem_retry()
829 static int virtio_mem_translate_node_id(struct virtio_mem *vm, uint16_t node_id) in virtio_mem_translate_node_id() argument
834 if (virtio_has_feature(vm->vdev, VIRTIO_MEM_F_ACPI_PXM)) in virtio_mem_translate_node_id()
844 static bool virtio_mem_overlaps_range(struct virtio_mem *vm, uint64_t start, in virtio_mem_overlaps_range() argument
847 return start < vm->addr + vm->region_size && vm->addr < start + size; in virtio_mem_overlaps_range()
854 static bool virtio_mem_contains_range(struct virtio_mem *vm, uint64_t start, in virtio_mem_contains_range() argument
857 return start >= vm->addr && start + size <= vm->addr + vm->region_size; in virtio_mem_contains_range()
860 static int virtio_mem_sbm_notify_going_online(struct virtio_mem *vm, in virtio_mem_sbm_notify_going_online() argument
863 switch (virtio_mem_sbm_get_mb_state(vm, mb_id)) { in virtio_mem_sbm_notify_going_online()
870 dev_warn_ratelimited(&vm->vdev->dev, in virtio_mem_sbm_notify_going_online()
875 static void virtio_mem_sbm_notify_offline(struct virtio_mem *vm, in virtio_mem_sbm_notify_offline() argument
878 switch (virtio_mem_sbm_get_mb_state(vm, mb_id)) { in virtio_mem_sbm_notify_offline()
881 virtio_mem_sbm_set_mb_state(vm, mb_id, in virtio_mem_sbm_notify_offline()
886 virtio_mem_sbm_set_mb_state(vm, mb_id, in virtio_mem_sbm_notify_offline()
895 static void virtio_mem_sbm_notify_online(struct virtio_mem *vm, in virtio_mem_sbm_notify_online() argument
902 switch (virtio_mem_sbm_get_mb_state(vm, mb_id)) { in virtio_mem_sbm_notify_online()
917 virtio_mem_sbm_set_mb_state(vm, mb_id, new_state); in virtio_mem_sbm_notify_online()
920 static void virtio_mem_sbm_notify_going_offline(struct virtio_mem *vm, in virtio_mem_sbm_notify_going_offline() argument
923 const unsigned long nr_pages = PFN_DOWN(vm->sbm.sb_size); in virtio_mem_sbm_notify_going_offline()
927 for (sb_id = 0; sb_id < vm->sbm.sbs_per_mb; sb_id++) { in virtio_mem_sbm_notify_going_offline()
928 if (virtio_mem_sbm_test_sb_plugged(vm, mb_id, sb_id, 1)) in virtio_mem_sbm_notify_going_offline()
931 sb_id * vm->sbm.sb_size); in virtio_mem_sbm_notify_going_offline()
936 static void virtio_mem_sbm_notify_cancel_offline(struct virtio_mem *vm, in virtio_mem_sbm_notify_cancel_offline() argument
939 const unsigned long nr_pages = PFN_DOWN(vm->sbm.sb_size); in virtio_mem_sbm_notify_cancel_offline()
943 for (sb_id = 0; sb_id < vm->sbm.sbs_per_mb; sb_id++) { in virtio_mem_sbm_notify_cancel_offline()
944 if (virtio_mem_sbm_test_sb_plugged(vm, mb_id, sb_id, 1)) in virtio_mem_sbm_notify_cancel_offline()
947 sb_id * vm->sbm.sb_size); in virtio_mem_sbm_notify_cancel_offline()
952 static void virtio_mem_bbm_notify_going_offline(struct virtio_mem *vm, in virtio_mem_bbm_notify_going_offline() argument
961 if (virtio_mem_bbm_get_bb_state(vm, bb_id) != in virtio_mem_bbm_notify_going_offline()
967 static void virtio_mem_bbm_notify_cancel_offline(struct virtio_mem *vm, in virtio_mem_bbm_notify_cancel_offline() argument
972 if (virtio_mem_bbm_get_bb_state(vm, bb_id) != in virtio_mem_bbm_notify_cancel_offline()
986 struct virtio_mem *vm = container_of(nb, struct virtio_mem, in virtio_mem_memory_notifier_cb() local
994 if (!virtio_mem_overlaps_range(vm, start, size)) in virtio_mem_memory_notifier_cb()
997 if (vm->in_sbm) { in virtio_mem_memory_notifier_cb()
1008 id = virtio_mem_phys_to_bb_id(vm, start); in virtio_mem_memory_notifier_cb()
1015 if (WARN_ON_ONCE(id != virtio_mem_phys_to_bb_id(vm, start + size - 1))) in virtio_mem_memory_notifier_cb()
1029 mutex_lock(&vm->hotplug_mutex); in virtio_mem_memory_notifier_cb()
1030 if (vm->removing) { in virtio_mem_memory_notifier_cb()
1032 mutex_unlock(&vm->hotplug_mutex); in virtio_mem_memory_notifier_cb()
1035 vm->hotplug_active = true; in virtio_mem_memory_notifier_cb()
1036 if (vm->in_sbm) in virtio_mem_memory_notifier_cb()
1037 virtio_mem_sbm_notify_going_offline(vm, id); in virtio_mem_memory_notifier_cb()
1039 virtio_mem_bbm_notify_going_offline(vm, id, in virtio_mem_memory_notifier_cb()
1044 mutex_lock(&vm->hotplug_mutex); in virtio_mem_memory_notifier_cb()
1045 if (vm->removing) { in virtio_mem_memory_notifier_cb()
1047 mutex_unlock(&vm->hotplug_mutex); in virtio_mem_memory_notifier_cb()
1050 vm->hotplug_active = true; in virtio_mem_memory_notifier_cb()
1051 if (vm->in_sbm) in virtio_mem_memory_notifier_cb()
1052 rc = virtio_mem_sbm_notify_going_online(vm, id); in virtio_mem_memory_notifier_cb()
1055 if (vm->in_sbm) in virtio_mem_memory_notifier_cb()
1056 virtio_mem_sbm_notify_offline(vm, id); in virtio_mem_memory_notifier_cb()
1058 atomic64_add(size, &vm->offline_size); in virtio_mem_memory_notifier_cb()
1064 virtio_mem_retry(vm); in virtio_mem_memory_notifier_cb()
1066 vm->hotplug_active = false; in virtio_mem_memory_notifier_cb()
1067 mutex_unlock(&vm->hotplug_mutex); in virtio_mem_memory_notifier_cb()
1070 if (vm->in_sbm) in virtio_mem_memory_notifier_cb()
1071 virtio_mem_sbm_notify_online(vm, id, mhp->start_pfn); in virtio_mem_memory_notifier_cb()
1073 atomic64_sub(size, &vm->offline_size); in virtio_mem_memory_notifier_cb()
1080 if (!atomic_read(&vm->wq_active) && in virtio_mem_memory_notifier_cb()
1081 virtio_mem_could_add_memory(vm, vm->offline_threshold / 2)) in virtio_mem_memory_notifier_cb()
1082 virtio_mem_retry(vm); in virtio_mem_memory_notifier_cb()
1084 vm->hotplug_active = false; in virtio_mem_memory_notifier_cb()
1085 mutex_unlock(&vm->hotplug_mutex); in virtio_mem_memory_notifier_cb()
1088 if (!vm->hotplug_active) in virtio_mem_memory_notifier_cb()
1090 if (vm->in_sbm) in virtio_mem_memory_notifier_cb()
1091 virtio_mem_sbm_notify_cancel_offline(vm, id); in virtio_mem_memory_notifier_cb()
1093 virtio_mem_bbm_notify_cancel_offline(vm, id, in virtio_mem_memory_notifier_cb()
1096 vm->hotplug_active = false; in virtio_mem_memory_notifier_cb()
1097 mutex_unlock(&vm->hotplug_mutex); in virtio_mem_memory_notifier_cb()
1100 if (!vm->hotplug_active) in virtio_mem_memory_notifier_cb()
1102 vm->hotplug_active = false; in virtio_mem_memory_notifier_cb()
1103 mutex_unlock(&vm->hotplug_mutex); in virtio_mem_memory_notifier_cb()
1192 static int virtio_mem_fake_offline(struct virtio_mem *vm, unsigned long pfn, in virtio_mem_fake_offline() argument
1211 if (atomic_read(&vm->config_changed)) in virtio_mem_fake_offline()
1274 static void virtio_mem_online_page(struct virtio_mem *vm, in virtio_mem_online_page() argument
1292 if (vm->in_sbm) { in virtio_mem_online_page()
1294 sb_id = virtio_mem_phys_to_sb_id(vm, addr); in virtio_mem_online_page()
1295 count = virtio_mem_phys_to_sb_id(vm, next - 1) - sb_id + 1; in virtio_mem_online_page()
1297 if (virtio_mem_sbm_test_sb_plugged(vm, id, sb_id, count)) { in virtio_mem_online_page()
1301 virtio_mem_sbm_test_sb_unplugged(vm, id, sb_id, count)) { in virtio_mem_online_page()
1310 order = ilog2(vm->sbm.sb_size) - PAGE_SHIFT; in virtio_mem_online_page()
1311 do_online = virtio_mem_sbm_test_sb_plugged(vm, id, sb_id, 1); in virtio_mem_online_page()
1319 id = virtio_mem_phys_to_bb_id(vm, addr); in virtio_mem_online_page()
1320 do_online = virtio_mem_bbm_get_bb_state(vm, id) != in virtio_mem_online_page()
1336 struct virtio_mem *vm; in virtio_mem_online_page_cb() local
1339 list_for_each_entry_rcu(vm, &virtio_mem_devices, next) { in virtio_mem_online_page_cb()
1344 if (!virtio_mem_contains_range(vm, addr, PFN_PHYS(1 << order))) in virtio_mem_online_page_cb()
1355 virtio_mem_online_page(vm, page, order); in virtio_mem_online_page_cb()
1364 static uint64_t virtio_mem_send_request(struct virtio_mem *vm, in virtio_mem_send_request() argument
1372 vm->req = *req; in virtio_mem_send_request()
1375 sg_init_one(&sg_req, &vm->req, sizeof(vm->req)); in virtio_mem_send_request()
1379 sg_init_one(&sg_resp, &vm->resp, sizeof(vm->resp)); in virtio_mem_send_request()
1382 rc = virtqueue_add_sgs(vm->vq, sgs, 1, 1, vm, GFP_KERNEL); in virtio_mem_send_request()
1386 virtqueue_kick(vm->vq); in virtio_mem_send_request()
1389 wait_event(vm->host_resp, virtqueue_get_buf(vm->vq, &len)); in virtio_mem_send_request()
1391 return virtio16_to_cpu(vm->vdev, vm->resp.type); in virtio_mem_send_request()
1394 static int virtio_mem_send_plug_request(struct virtio_mem *vm, uint64_t addr, in virtio_mem_send_plug_request() argument
1397 const uint64_t nb_vm_blocks = size / vm->device_block_size; in virtio_mem_send_plug_request()
1399 .type = cpu_to_virtio16(vm->vdev, VIRTIO_MEM_REQ_PLUG), in virtio_mem_send_plug_request()
1400 .u.plug.addr = cpu_to_virtio64(vm->vdev, addr), in virtio_mem_send_plug_request()
1401 .u.plug.nb_blocks = cpu_to_virtio16(vm->vdev, nb_vm_blocks), in virtio_mem_send_plug_request()
1405 if (atomic_read(&vm->config_changed)) in virtio_mem_send_plug_request()
1408 dev_dbg(&vm->vdev->dev, "plugging memory: 0x%llx - 0x%llx\n", addr, in virtio_mem_send_plug_request()
1411 switch (virtio_mem_send_request(vm, &req)) { in virtio_mem_send_plug_request()
1413 vm->plugged_size += size; in virtio_mem_send_plug_request()
1428 dev_dbg(&vm->vdev->dev, "plugging memory failed: %d\n", rc); in virtio_mem_send_plug_request()
1432 static int virtio_mem_send_unplug_request(struct virtio_mem *vm, uint64_t addr, in virtio_mem_send_unplug_request() argument
1435 const uint64_t nb_vm_blocks = size / vm->device_block_size; in virtio_mem_send_unplug_request()
1437 .type = cpu_to_virtio16(vm->vdev, VIRTIO_MEM_REQ_UNPLUG), in virtio_mem_send_unplug_request()
1438 .u.unplug.addr = cpu_to_virtio64(vm->vdev, addr), in virtio_mem_send_unplug_request()
1439 .u.unplug.nb_blocks = cpu_to_virtio16(vm->vdev, nb_vm_blocks), in virtio_mem_send_unplug_request()
1443 if (atomic_read(&vm->config_changed)) in virtio_mem_send_unplug_request()
1446 dev_dbg(&vm->vdev->dev, "unplugging memory: 0x%llx - 0x%llx\n", addr, in virtio_mem_send_unplug_request()
1449 switch (virtio_mem_send_request(vm, &req)) { in virtio_mem_send_unplug_request()
1451 vm->plugged_size -= size; in virtio_mem_send_unplug_request()
1463 dev_dbg(&vm->vdev->dev, "unplugging memory failed: %d\n", rc); in virtio_mem_send_unplug_request()
1467 static int virtio_mem_send_unplug_all_request(struct virtio_mem *vm) in virtio_mem_send_unplug_all_request() argument
1470 .type = cpu_to_virtio16(vm->vdev, VIRTIO_MEM_REQ_UNPLUG_ALL), in virtio_mem_send_unplug_all_request()
1474 dev_dbg(&vm->vdev->dev, "unplugging all memory"); in virtio_mem_send_unplug_all_request()
1476 switch (virtio_mem_send_request(vm, &req)) { in virtio_mem_send_unplug_all_request()
1478 vm->unplug_all_required = false; in virtio_mem_send_unplug_all_request()
1479 vm->plugged_size = 0; in virtio_mem_send_unplug_all_request()
1481 atomic_set(&vm->config_changed, 1); in virtio_mem_send_unplug_all_request()
1490 dev_dbg(&vm->vdev->dev, "unplugging all memory failed: %d\n", rc); in virtio_mem_send_unplug_all_request()
1498 static int virtio_mem_sbm_plug_sb(struct virtio_mem *vm, unsigned long mb_id, in virtio_mem_sbm_plug_sb() argument
1502 sb_id * vm->sbm.sb_size; in virtio_mem_sbm_plug_sb()
1503 const uint64_t size = count * vm->sbm.sb_size; in virtio_mem_sbm_plug_sb()
1506 rc = virtio_mem_send_plug_request(vm, addr, size); in virtio_mem_sbm_plug_sb()
1508 virtio_mem_sbm_set_sb_plugged(vm, mb_id, sb_id, count); in virtio_mem_sbm_plug_sb()
1516 static int virtio_mem_sbm_unplug_sb(struct virtio_mem *vm, unsigned long mb_id, in virtio_mem_sbm_unplug_sb() argument
1520 sb_id * vm->sbm.sb_size; in virtio_mem_sbm_unplug_sb()
1521 const uint64_t size = count * vm->sbm.sb_size; in virtio_mem_sbm_unplug_sb()
1524 rc = virtio_mem_send_unplug_request(vm, addr, size); in virtio_mem_sbm_unplug_sb()
1526 virtio_mem_sbm_set_sb_unplugged(vm, mb_id, sb_id, count); in virtio_mem_sbm_unplug_sb()
1535 static int virtio_mem_bbm_unplug_bb(struct virtio_mem *vm, unsigned long bb_id) in virtio_mem_bbm_unplug_bb() argument
1537 const uint64_t addr = virtio_mem_bb_id_to_phys(vm, bb_id); in virtio_mem_bbm_unplug_bb()
1538 const uint64_t size = vm->bbm.bb_size; in virtio_mem_bbm_unplug_bb()
1540 return virtio_mem_send_unplug_request(vm, addr, size); in virtio_mem_bbm_unplug_bb()
1548 static int virtio_mem_bbm_plug_bb(struct virtio_mem *vm, unsigned long bb_id) in virtio_mem_bbm_plug_bb() argument
1550 const uint64_t addr = virtio_mem_bb_id_to_phys(vm, bb_id); in virtio_mem_bbm_plug_bb()
1551 const uint64_t size = vm->bbm.bb_size; in virtio_mem_bbm_plug_bb()
1553 return virtio_mem_send_plug_request(vm, addr, size); in virtio_mem_bbm_plug_bb()
1565 static int virtio_mem_sbm_unplug_any_sb_raw(struct virtio_mem *vm, in virtio_mem_sbm_unplug_any_sb_raw() argument
1571 sb_id = vm->sbm.sbs_per_mb - 1; in virtio_mem_sbm_unplug_any_sb_raw()
1575 virtio_mem_sbm_test_sb_unplugged(vm, mb_id, sb_id, 1)) in virtio_mem_sbm_unplug_any_sb_raw()
1582 virtio_mem_sbm_test_sb_plugged(vm, mb_id, sb_id - 1, 1)) { in virtio_mem_sbm_unplug_any_sb_raw()
1587 rc = virtio_mem_sbm_unplug_sb(vm, mb_id, sb_id, count); in virtio_mem_sbm_unplug_any_sb_raw()
1604 static int virtio_mem_sbm_unplug_mb(struct virtio_mem *vm, unsigned long mb_id) in virtio_mem_sbm_unplug_mb() argument
1606 uint64_t nb_sb = vm->sbm.sbs_per_mb; in virtio_mem_sbm_unplug_mb()
1608 return virtio_mem_sbm_unplug_any_sb_raw(vm, mb_id, &nb_sb); in virtio_mem_sbm_unplug_mb()
1614 static int virtio_mem_sbm_prepare_next_mb(struct virtio_mem *vm, in virtio_mem_sbm_prepare_next_mb() argument
1619 if (vm->sbm.next_mb_id > vm->sbm.last_usable_mb_id) in virtio_mem_sbm_prepare_next_mb()
1623 rc = virtio_mem_sbm_mb_states_prepare_next_mb(vm); in virtio_mem_sbm_prepare_next_mb()
1628 rc = virtio_mem_sbm_sb_states_prepare_next_mb(vm); in virtio_mem_sbm_prepare_next_mb()
1632 vm->sbm.mb_count[VIRTIO_MEM_SBM_MB_UNUSED]++; in virtio_mem_sbm_prepare_next_mb()
1633 *mb_id = vm->sbm.next_mb_id++; in virtio_mem_sbm_prepare_next_mb()
1643 static int virtio_mem_sbm_plug_and_add_mb(struct virtio_mem *vm, in virtio_mem_sbm_plug_and_add_mb() argument
1646 const int count = min_t(int, *nb_sb, vm->sbm.sbs_per_mb); in virtio_mem_sbm_plug_and_add_mb()
1656 rc = virtio_mem_sbm_plug_sb(vm, mb_id, 0, count); in virtio_mem_sbm_plug_and_add_mb()
1664 if (count == vm->sbm.sbs_per_mb) in virtio_mem_sbm_plug_and_add_mb()
1665 virtio_mem_sbm_set_mb_state(vm, mb_id, in virtio_mem_sbm_plug_and_add_mb()
1668 virtio_mem_sbm_set_mb_state(vm, mb_id, in virtio_mem_sbm_plug_and_add_mb()
1672 rc = virtio_mem_sbm_add_mb(vm, mb_id); in virtio_mem_sbm_plug_and_add_mb()
1676 if (virtio_mem_sbm_unplug_sb(vm, mb_id, 0, count)) in virtio_mem_sbm_plug_and_add_mb()
1678 virtio_mem_sbm_set_mb_state(vm, mb_id, new_state); in virtio_mem_sbm_plug_and_add_mb()
1694 static int virtio_mem_sbm_plug_any_sb(struct virtio_mem *vm, in virtio_mem_sbm_plug_any_sb() argument
1697 const int old_state = virtio_mem_sbm_get_mb_state(vm, mb_id); in virtio_mem_sbm_plug_any_sb()
1706 sb_id = virtio_mem_sbm_first_unplugged_sb(vm, mb_id); in virtio_mem_sbm_plug_any_sb()
1707 if (sb_id >= vm->sbm.sbs_per_mb) in virtio_mem_sbm_plug_any_sb()
1711 sb_id + count < vm->sbm.sbs_per_mb && in virtio_mem_sbm_plug_any_sb()
1712 !virtio_mem_sbm_test_sb_plugged(vm, mb_id, sb_id + count, 1)) in virtio_mem_sbm_plug_any_sb()
1715 rc = virtio_mem_sbm_plug_sb(vm, mb_id, sb_id, count); in virtio_mem_sbm_plug_any_sb()
1724 sb_id * vm->sbm.sb_size); in virtio_mem_sbm_plug_any_sb()
1725 nr_pages = PFN_DOWN(count * vm->sbm.sb_size); in virtio_mem_sbm_plug_any_sb()
1729 if (virtio_mem_sbm_test_sb_plugged(vm, mb_id, 0, vm->sbm.sbs_per_mb)) in virtio_mem_sbm_plug_any_sb()
1730 virtio_mem_sbm_set_mb_state(vm, mb_id, old_state - 1); in virtio_mem_sbm_plug_any_sb()
1735 static int virtio_mem_sbm_plug_request(struct virtio_mem *vm, uint64_t diff) in virtio_mem_sbm_plug_request() argument
1742 uint64_t nb_sb = diff / vm->sbm.sb_size; in virtio_mem_sbm_plug_request()
1750 mutex_lock(&vm->hotplug_mutex); in virtio_mem_sbm_plug_request()
1753 virtio_mem_sbm_for_each_mb(vm, mb_id, mb_states[i]) { in virtio_mem_sbm_plug_request()
1754 rc = virtio_mem_sbm_plug_any_sb(vm, mb_id, &nb_sb); in virtio_mem_sbm_plug_request()
1765 mutex_unlock(&vm->hotplug_mutex); in virtio_mem_sbm_plug_request()
1768 virtio_mem_sbm_for_each_mb(vm, mb_id, VIRTIO_MEM_SBM_MB_UNUSED) { in virtio_mem_sbm_plug_request()
1769 if (!virtio_mem_could_add_memory(vm, memory_block_size_bytes())) in virtio_mem_sbm_plug_request()
1772 rc = virtio_mem_sbm_plug_and_add_mb(vm, mb_id, &nb_sb); in virtio_mem_sbm_plug_request()
1780 if (!virtio_mem_could_add_memory(vm, memory_block_size_bytes())) in virtio_mem_sbm_plug_request()
1783 rc = virtio_mem_sbm_prepare_next_mb(vm, &mb_id); in virtio_mem_sbm_plug_request()
1786 rc = virtio_mem_sbm_plug_and_add_mb(vm, mb_id, &nb_sb); in virtio_mem_sbm_plug_request()
1794 mutex_unlock(&vm->hotplug_mutex); in virtio_mem_sbm_plug_request()
1803 static int virtio_mem_bbm_plug_and_add_bb(struct virtio_mem *vm, in virtio_mem_bbm_plug_and_add_bb() argument
1808 if (WARN_ON_ONCE(virtio_mem_bbm_get_bb_state(vm, bb_id) != in virtio_mem_bbm_plug_and_add_bb()
1812 rc = virtio_mem_bbm_plug_bb(vm, bb_id); in virtio_mem_bbm_plug_and_add_bb()
1815 virtio_mem_bbm_set_bb_state(vm, bb_id, VIRTIO_MEM_BBM_BB_ADDED); in virtio_mem_bbm_plug_and_add_bb()
1817 rc = virtio_mem_bbm_add_bb(vm, bb_id); in virtio_mem_bbm_plug_and_add_bb()
1819 if (!virtio_mem_bbm_unplug_bb(vm, bb_id)) in virtio_mem_bbm_plug_and_add_bb()
1820 virtio_mem_bbm_set_bb_state(vm, bb_id, in virtio_mem_bbm_plug_and_add_bb()
1824 virtio_mem_bbm_set_bb_state(vm, bb_id, in virtio_mem_bbm_plug_and_add_bb()
1834 static int virtio_mem_bbm_prepare_next_bb(struct virtio_mem *vm, in virtio_mem_bbm_prepare_next_bb() argument
1839 if (vm->bbm.next_bb_id > vm->bbm.last_usable_bb_id) in virtio_mem_bbm_prepare_next_bb()
1843 rc = virtio_mem_bbm_bb_states_prepare_next_bb(vm); in virtio_mem_bbm_prepare_next_bb()
1847 vm->bbm.bb_count[VIRTIO_MEM_BBM_BB_UNUSED]++; in virtio_mem_bbm_prepare_next_bb()
1848 *bb_id = vm->bbm.next_bb_id; in virtio_mem_bbm_prepare_next_bb()
1849 vm->bbm.next_bb_id++; in virtio_mem_bbm_prepare_next_bb()
1853 static int virtio_mem_bbm_plug_request(struct virtio_mem *vm, uint64_t diff) in virtio_mem_bbm_plug_request() argument
1855 uint64_t nb_bb = diff / vm->bbm.bb_size; in virtio_mem_bbm_plug_request()
1863 virtio_mem_bbm_for_each_bb(vm, bb_id, VIRTIO_MEM_BBM_BB_UNUSED) { in virtio_mem_bbm_plug_request()
1864 if (!virtio_mem_could_add_memory(vm, vm->bbm.bb_size)) in virtio_mem_bbm_plug_request()
1867 rc = virtio_mem_bbm_plug_and_add_bb(vm, bb_id); in virtio_mem_bbm_plug_request()
1877 if (!virtio_mem_could_add_memory(vm, vm->bbm.bb_size)) in virtio_mem_bbm_plug_request()
1880 rc = virtio_mem_bbm_prepare_next_bb(vm, &bb_id); in virtio_mem_bbm_plug_request()
1883 rc = virtio_mem_bbm_plug_and_add_bb(vm, bb_id); in virtio_mem_bbm_plug_request()
1897 static int virtio_mem_plug_request(struct virtio_mem *vm, uint64_t diff) in virtio_mem_plug_request() argument
1899 if (vm->in_sbm) in virtio_mem_plug_request()
1900 return virtio_mem_sbm_plug_request(vm, diff); in virtio_mem_plug_request()
1901 return virtio_mem_bbm_plug_request(vm, diff); in virtio_mem_plug_request()
1913 static int virtio_mem_sbm_unplug_any_sb_offline(struct virtio_mem *vm, in virtio_mem_sbm_unplug_any_sb_offline() argument
1919 rc = virtio_mem_sbm_unplug_any_sb_raw(vm, mb_id, nb_sb); in virtio_mem_sbm_unplug_any_sb_offline()
1922 if (!virtio_mem_sbm_test_sb_plugged(vm, mb_id, 0, vm->sbm.sbs_per_mb)) in virtio_mem_sbm_unplug_any_sb_offline()
1923 virtio_mem_sbm_set_mb_state(vm, mb_id, in virtio_mem_sbm_unplug_any_sb_offline()
1928 if (virtio_mem_sbm_test_sb_unplugged(vm, mb_id, 0, vm->sbm.sbs_per_mb)) { in virtio_mem_sbm_unplug_any_sb_offline()
1935 virtio_mem_sbm_set_mb_state(vm, mb_id, in virtio_mem_sbm_unplug_any_sb_offline()
1938 mutex_unlock(&vm->hotplug_mutex); in virtio_mem_sbm_unplug_any_sb_offline()
1939 rc = virtio_mem_sbm_remove_mb(vm, mb_id); in virtio_mem_sbm_unplug_any_sb_offline()
1941 mutex_lock(&vm->hotplug_mutex); in virtio_mem_sbm_unplug_any_sb_offline()
1951 static int virtio_mem_sbm_unplug_sb_online(struct virtio_mem *vm, in virtio_mem_sbm_unplug_sb_online() argument
1955 const unsigned long nr_pages = PFN_DOWN(vm->sbm.sb_size) * count; in virtio_mem_sbm_unplug_sb_online()
1956 const int old_state = virtio_mem_sbm_get_mb_state(vm, mb_id); in virtio_mem_sbm_unplug_sb_online()
1961 sb_id * vm->sbm.sb_size); in virtio_mem_sbm_unplug_sb_online()
1963 rc = virtio_mem_fake_offline(vm, start_pfn, nr_pages); in virtio_mem_sbm_unplug_sb_online()
1968 rc = virtio_mem_sbm_unplug_sb(vm, mb_id, sb_id, count); in virtio_mem_sbm_unplug_sb_online()
1977 virtio_mem_sbm_set_mb_state(vm, mb_id, in virtio_mem_sbm_unplug_sb_online()
1981 virtio_mem_sbm_set_mb_state(vm, mb_id, in virtio_mem_sbm_unplug_sb_online()
1999 static int virtio_mem_sbm_unplug_any_sb_online(struct virtio_mem *vm, in virtio_mem_sbm_unplug_any_sb_online() argument
2006 if (*nb_sb >= vm->sbm.sbs_per_mb && in virtio_mem_sbm_unplug_any_sb_online()
2007 virtio_mem_sbm_test_sb_plugged(vm, mb_id, 0, vm->sbm.sbs_per_mb)) { in virtio_mem_sbm_unplug_any_sb_online()
2008 rc = virtio_mem_sbm_unplug_sb_online(vm, mb_id, 0, in virtio_mem_sbm_unplug_any_sb_online()
2009 vm->sbm.sbs_per_mb); in virtio_mem_sbm_unplug_any_sb_online()
2011 *nb_sb -= vm->sbm.sbs_per_mb; in virtio_mem_sbm_unplug_any_sb_online()
2018 for (sb_id = vm->sbm.sbs_per_mb - 1; sb_id >= 0 && *nb_sb; sb_id--) { in virtio_mem_sbm_unplug_any_sb_online()
2021 !virtio_mem_sbm_test_sb_plugged(vm, mb_id, sb_id, 1)) in virtio_mem_sbm_unplug_any_sb_online()
2026 rc = virtio_mem_sbm_unplug_sb_online(vm, mb_id, sb_id, 1); in virtio_mem_sbm_unplug_any_sb_online()
2035 rc = virtio_mem_sbm_try_remove_unplugged_mb(vm, mb_id); in virtio_mem_sbm_unplug_any_sb_online()
2037 vm->sbm.have_unplugged_mb = 1; in virtio_mem_sbm_unplug_any_sb_online()
2054 static int virtio_mem_sbm_unplug_any_sb(struct virtio_mem *vm, in virtio_mem_sbm_unplug_any_sb() argument
2058 const int old_state = virtio_mem_sbm_get_mb_state(vm, mb_id); in virtio_mem_sbm_unplug_any_sb()
2065 return virtio_mem_sbm_unplug_any_sb_online(vm, mb_id, nb_sb); in virtio_mem_sbm_unplug_any_sb()
2068 return virtio_mem_sbm_unplug_any_sb_offline(vm, mb_id, nb_sb); in virtio_mem_sbm_unplug_any_sb()
2073 static int virtio_mem_sbm_unplug_request(struct virtio_mem *vm, uint64_t diff) in virtio_mem_sbm_unplug_request() argument
2083 uint64_t nb_sb = diff / vm->sbm.sb_size; in virtio_mem_sbm_unplug_request()
2095 mutex_lock(&vm->hotplug_mutex); in virtio_mem_sbm_unplug_request()
2105 virtio_mem_sbm_for_each_mb_rev(vm, mb_id, mb_states[i]) { in virtio_mem_sbm_unplug_request()
2106 rc = virtio_mem_sbm_unplug_any_sb(vm, mb_id, &nb_sb); in virtio_mem_sbm_unplug_request()
2109 mutex_unlock(&vm->hotplug_mutex); in virtio_mem_sbm_unplug_request()
2111 mutex_lock(&vm->hotplug_mutex); in virtio_mem_sbm_unplug_request()
2114 mutex_unlock(&vm->hotplug_mutex); in virtio_mem_sbm_unplug_request()
2119 mutex_unlock(&vm->hotplug_mutex); in virtio_mem_sbm_unplug_request()
2122 mutex_unlock(&vm->hotplug_mutex); in virtio_mem_sbm_unplug_request()
2133 static int virtio_mem_bbm_offline_remove_and_unplug_bb(struct virtio_mem *vm, in virtio_mem_bbm_offline_remove_and_unplug_bb() argument
2136 const unsigned long start_pfn = PFN_DOWN(virtio_mem_bb_id_to_phys(vm, bb_id)); in virtio_mem_bbm_offline_remove_and_unplug_bb()
2137 const unsigned long nr_pages = PFN_DOWN(vm->bbm.bb_size); in virtio_mem_bbm_offline_remove_and_unplug_bb()
2143 if (WARN_ON_ONCE(virtio_mem_bbm_get_bb_state(vm, bb_id) != in virtio_mem_bbm_offline_remove_and_unplug_bb()
2153 mutex_lock(&vm->hotplug_mutex); in virtio_mem_bbm_offline_remove_and_unplug_bb()
2154 virtio_mem_bbm_set_bb_state(vm, bb_id, VIRTIO_MEM_BBM_BB_FAKE_OFFLINE); in virtio_mem_bbm_offline_remove_and_unplug_bb()
2161 rc = virtio_mem_fake_offline(vm, pfn, PAGES_PER_SECTION); in virtio_mem_bbm_offline_remove_and_unplug_bb()
2167 mutex_unlock(&vm->hotplug_mutex); in virtio_mem_bbm_offline_remove_and_unplug_bb()
2169 rc = virtio_mem_bbm_offline_and_remove_bb(vm, bb_id); in virtio_mem_bbm_offline_remove_and_unplug_bb()
2171 mutex_lock(&vm->hotplug_mutex); in virtio_mem_bbm_offline_remove_and_unplug_bb()
2175 rc = virtio_mem_bbm_unplug_bb(vm, bb_id); in virtio_mem_bbm_offline_remove_and_unplug_bb()
2177 virtio_mem_bbm_set_bb_state(vm, bb_id, in virtio_mem_bbm_offline_remove_and_unplug_bb()
2180 virtio_mem_bbm_set_bb_state(vm, bb_id, in virtio_mem_bbm_offline_remove_and_unplug_bb()
2191 virtio_mem_bbm_set_bb_state(vm, bb_id, VIRTIO_MEM_BBM_BB_ADDED); in virtio_mem_bbm_offline_remove_and_unplug_bb()
2192 mutex_unlock(&vm->hotplug_mutex); in virtio_mem_bbm_offline_remove_and_unplug_bb()
2199 static bool virtio_mem_bbm_bb_is_offline(struct virtio_mem *vm, in virtio_mem_bbm_bb_is_offline() argument
2202 const unsigned long start_pfn = PFN_DOWN(virtio_mem_bb_id_to_phys(vm, bb_id)); in virtio_mem_bbm_bb_is_offline()
2203 const unsigned long nr_pages = PFN_DOWN(vm->bbm.bb_size); in virtio_mem_bbm_bb_is_offline()
2218 static bool virtio_mem_bbm_bb_is_movable(struct virtio_mem *vm, in virtio_mem_bbm_bb_is_movable() argument
2221 const unsigned long start_pfn = PFN_DOWN(virtio_mem_bb_id_to_phys(vm, bb_id)); in virtio_mem_bbm_bb_is_movable()
2222 const unsigned long nr_pages = PFN_DOWN(vm->bbm.bb_size); in virtio_mem_bbm_bb_is_movable()
2238 static int virtio_mem_bbm_unplug_request(struct virtio_mem *vm, uint64_t diff) in virtio_mem_bbm_unplug_request() argument
2240 uint64_t nb_bb = diff / vm->bbm.bb_size; in virtio_mem_bbm_unplug_request()
2252 virtio_mem_bbm_for_each_bb_rev(vm, bb_id, VIRTIO_MEM_BBM_BB_ADDED) { in virtio_mem_bbm_unplug_request()
2259 if (i == 0 && !virtio_mem_bbm_bb_is_offline(vm, bb_id)) in virtio_mem_bbm_unplug_request()
2261 if (i == 1 && !virtio_mem_bbm_bb_is_movable(vm, bb_id)) in virtio_mem_bbm_unplug_request()
2263 rc = virtio_mem_bbm_offline_remove_and_unplug_bb(vm, bb_id); in virtio_mem_bbm_unplug_request()
2281 static int virtio_mem_unplug_request(struct virtio_mem *vm, uint64_t diff) in virtio_mem_unplug_request() argument
2283 if (vm->in_sbm) in virtio_mem_unplug_request()
2284 return virtio_mem_sbm_unplug_request(vm, diff); in virtio_mem_unplug_request()
2285 return virtio_mem_bbm_unplug_request(vm, diff); in virtio_mem_unplug_request()
2293 static int virtio_mem_cleanup_pending_mb(struct virtio_mem *vm) in virtio_mem_cleanup_pending_mb() argument
2298 if (!vm->in_sbm) { in virtio_mem_cleanup_pending_mb()
2299 virtio_mem_bbm_for_each_bb(vm, id, in virtio_mem_cleanup_pending_mb()
2301 rc = virtio_mem_bbm_unplug_bb(vm, id); in virtio_mem_cleanup_pending_mb()
2304 virtio_mem_bbm_set_bb_state(vm, id, in virtio_mem_cleanup_pending_mb()
2310 virtio_mem_sbm_for_each_mb(vm, id, VIRTIO_MEM_SBM_MB_PLUGGED) { in virtio_mem_cleanup_pending_mb()
2311 rc = virtio_mem_sbm_unplug_mb(vm, id); in virtio_mem_cleanup_pending_mb()
2314 virtio_mem_sbm_set_mb_state(vm, id, in virtio_mem_cleanup_pending_mb()
2318 if (!vm->sbm.have_unplugged_mb) in virtio_mem_cleanup_pending_mb()
2325 vm->sbm.have_unplugged_mb = false; in virtio_mem_cleanup_pending_mb()
2327 mutex_lock(&vm->hotplug_mutex); in virtio_mem_cleanup_pending_mb()
2328 virtio_mem_sbm_for_each_mb(vm, id, VIRTIO_MEM_SBM_MB_MOVABLE_PARTIAL) in virtio_mem_cleanup_pending_mb()
2329 rc |= virtio_mem_sbm_try_remove_unplugged_mb(vm, id); in virtio_mem_cleanup_pending_mb()
2330 virtio_mem_sbm_for_each_mb(vm, id, VIRTIO_MEM_SBM_MB_KERNEL_PARTIAL) in virtio_mem_cleanup_pending_mb()
2331 rc |= virtio_mem_sbm_try_remove_unplugged_mb(vm, id); in virtio_mem_cleanup_pending_mb()
2332 virtio_mem_sbm_for_each_mb(vm, id, VIRTIO_MEM_SBM_MB_OFFLINE_PARTIAL) in virtio_mem_cleanup_pending_mb()
2333 rc |= virtio_mem_sbm_try_remove_unplugged_mb(vm, id); in virtio_mem_cleanup_pending_mb()
2334 mutex_unlock(&vm->hotplug_mutex); in virtio_mem_cleanup_pending_mb()
2337 vm->sbm.have_unplugged_mb = true; in virtio_mem_cleanup_pending_mb()
2345 static void virtio_mem_refresh_config(struct virtio_mem *vm) in virtio_mem_refresh_config() argument
2351 virtio_cread_le(vm->vdev, struct virtio_mem_config, plugged_size, in virtio_mem_refresh_config()
2353 if (WARN_ON_ONCE(new_plugged_size != vm->plugged_size)) in virtio_mem_refresh_config()
2354 vm->plugged_size = new_plugged_size; in virtio_mem_refresh_config()
2357 virtio_cread_le(vm->vdev, struct virtio_mem_config, in virtio_mem_refresh_config()
2359 end_addr = min(vm->addr + usable_region_size - 1, in virtio_mem_refresh_config()
2362 if (vm->in_sbm) { in virtio_mem_refresh_config()
2363 vm->sbm.last_usable_mb_id = virtio_mem_phys_to_mb_id(end_addr); in virtio_mem_refresh_config()
2365 vm->sbm.last_usable_mb_id--; in virtio_mem_refresh_config()
2367 vm->bbm.last_usable_bb_id = virtio_mem_phys_to_bb_id(vm, in virtio_mem_refresh_config()
2369 if (!IS_ALIGNED(end_addr + 1, vm->bbm.bb_size)) in virtio_mem_refresh_config()
2370 vm->bbm.last_usable_bb_id--; in virtio_mem_refresh_config()
2380 virtio_cread_le(vm->vdev, struct virtio_mem_config, requested_size, in virtio_mem_refresh_config()
2381 &vm->requested_size); in virtio_mem_refresh_config()
2383 dev_info(&vm->vdev->dev, "plugged size: 0x%llx", vm->plugged_size); in virtio_mem_refresh_config()
2384 dev_info(&vm->vdev->dev, "requested size: 0x%llx", vm->requested_size); in virtio_mem_refresh_config()
2392 struct virtio_mem *vm = container_of(work, struct virtio_mem, wq); in virtio_mem_run_wq() local
2396 if (unlikely(vm->in_kdump)) { in virtio_mem_run_wq()
2397 dev_warn_once(&vm->vdev->dev, in virtio_mem_run_wq()
2402 hrtimer_cancel(&vm->retry_timer); in virtio_mem_run_wq()
2404 if (vm->broken) in virtio_mem_run_wq()
2407 atomic_set(&vm->wq_active, 1); in virtio_mem_run_wq()
2412 if (unlikely(vm->unplug_all_required)) in virtio_mem_run_wq()
2413 rc = virtio_mem_send_unplug_all_request(vm); in virtio_mem_run_wq()
2415 if (atomic_read(&vm->config_changed)) { in virtio_mem_run_wq()
2416 atomic_set(&vm->config_changed, 0); in virtio_mem_run_wq()
2417 virtio_mem_refresh_config(vm); in virtio_mem_run_wq()
2422 rc = virtio_mem_cleanup_pending_mb(vm); in virtio_mem_run_wq()
2424 if (!rc && vm->requested_size != vm->plugged_size) { in virtio_mem_run_wq()
2425 if (vm->requested_size > vm->plugged_size) { in virtio_mem_run_wq()
2426 diff = vm->requested_size - vm->plugged_size; in virtio_mem_run_wq()
2427 rc = virtio_mem_plug_request(vm, diff); in virtio_mem_run_wq()
2429 diff = vm->plugged_size - vm->requested_size; in virtio_mem_run_wq()
2430 rc = virtio_mem_unplug_request(vm, diff); in virtio_mem_run_wq()
2438 if (!rc && vm->in_sbm && vm->sbm.have_unplugged_mb) in virtio_mem_run_wq()
2443 vm->retry_timer_ms = VIRTIO_MEM_RETRY_TIMER_MIN_MS; in virtio_mem_run_wq()
2463 hrtimer_start(&vm->retry_timer, ms_to_ktime(vm->retry_timer_ms), in virtio_mem_run_wq()
2471 dev_err(&vm->vdev->dev, in virtio_mem_run_wq()
2473 vm->broken = true; in virtio_mem_run_wq()
2476 atomic_set(&vm->wq_active, 0); in virtio_mem_run_wq()
2481 struct virtio_mem *vm = container_of(timer, struct virtio_mem, in virtio_mem_timer_expired() local
2484 virtio_mem_retry(vm); in virtio_mem_timer_expired()
2485 vm->retry_timer_ms = min_t(unsigned int, vm->retry_timer_ms * 2, in virtio_mem_timer_expired()
2492 struct virtio_mem *vm = vq->vdev->priv; in virtio_mem_handle_response() local
2494 wake_up(&vm->host_resp); in virtio_mem_handle_response()
2497 static int virtio_mem_init_vq(struct virtio_mem *vm) in virtio_mem_init_vq() argument
2501 vq = virtio_find_single_vq(vm->vdev, virtio_mem_handle_response, in virtio_mem_init_vq()
2505 vm->vq = vq; in virtio_mem_init_vq()
2510 static int virtio_mem_init_hotplug(struct virtio_mem *vm) in virtio_mem_init_hotplug() argument
2517 if (!IS_ALIGNED(vm->addr, memory_block_size_bytes())) in virtio_mem_init_hotplug()
2518 dev_warn(&vm->vdev->dev, in virtio_mem_init_hotplug()
2520 if (!IS_ALIGNED(vm->addr + vm->region_size, memory_block_size_bytes())) in virtio_mem_init_hotplug()
2521 dev_warn(&vm->vdev->dev, in virtio_mem_init_hotplug()
2523 if (vm->addr < pluggable_range.start || in virtio_mem_init_hotplug()
2524 vm->addr + vm->region_size - 1 > pluggable_range.end) in virtio_mem_init_hotplug()
2525 dev_warn(&vm->vdev->dev, in virtio_mem_init_hotplug()
2529 vm->offline_threshold = max_t(uint64_t, 2 * memory_block_size_bytes(), in virtio_mem_init_hotplug()
2537 sb_size = max_t(uint64_t, vm->device_block_size, sb_size); in virtio_mem_init_hotplug()
2541 vm->in_sbm = true; in virtio_mem_init_hotplug()
2542 vm->sbm.sb_size = sb_size; in virtio_mem_init_hotplug()
2543 vm->sbm.sbs_per_mb = memory_block_size_bytes() / in virtio_mem_init_hotplug()
2544 vm->sbm.sb_size; in virtio_mem_init_hotplug()
2547 addr = max_t(uint64_t, vm->addr, pluggable_range.start) + in virtio_mem_init_hotplug()
2549 vm->sbm.first_mb_id = virtio_mem_phys_to_mb_id(addr); in virtio_mem_init_hotplug()
2550 vm->sbm.next_mb_id = vm->sbm.first_mb_id; in virtio_mem_init_hotplug()
2553 vm->bbm.bb_size = max_t(uint64_t, vm->device_block_size, in virtio_mem_init_hotplug()
2558 dev_warn(&vm->vdev->dev, in virtio_mem_init_hotplug()
2560 } else if (bbm_block_size < vm->bbm.bb_size) { in virtio_mem_init_hotplug()
2561 dev_warn(&vm->vdev->dev, in virtio_mem_init_hotplug()
2564 vm->bbm.bb_size = bbm_block_size; in virtio_mem_init_hotplug()
2569 addr = max_t(uint64_t, vm->addr, pluggable_range.start) + in virtio_mem_init_hotplug()
2570 vm->bbm.bb_size - 1; in virtio_mem_init_hotplug()
2571 vm->bbm.first_bb_id = virtio_mem_phys_to_bb_id(vm, addr); in virtio_mem_init_hotplug()
2572 vm->bbm.next_bb_id = vm->bbm.first_bb_id; in virtio_mem_init_hotplug()
2575 vm->offline_threshold = max_t(uint64_t, 2 * vm->bbm.bb_size, in virtio_mem_init_hotplug()
2576 vm->offline_threshold); in virtio_mem_init_hotplug()
2579 dev_info(&vm->vdev->dev, "memory block size: 0x%lx", in virtio_mem_init_hotplug()
2581 if (vm->in_sbm) in virtio_mem_init_hotplug()
2582 dev_info(&vm->vdev->dev, "subblock size: 0x%llx", in virtio_mem_init_hotplug()
2583 (unsigned long long)vm->sbm.sb_size); in virtio_mem_init_hotplug()
2585 dev_info(&vm->vdev->dev, "big block size: 0x%llx", in virtio_mem_init_hotplug()
2586 (unsigned long long)vm->bbm.bb_size); in virtio_mem_init_hotplug()
2589 rc = virtio_mem_create_resource(vm); in virtio_mem_init_hotplug()
2594 if (vm->in_sbm) in virtio_mem_init_hotplug()
2597 unit_pages = PHYS_PFN(vm->bbm.bb_size); in virtio_mem_init_hotplug()
2598 rc = memory_group_register_dynamic(vm->nid, unit_pages); in virtio_mem_init_hotplug()
2601 vm->mgid = rc; in virtio_mem_init_hotplug()
2608 if (vm->plugged_size) { in virtio_mem_init_hotplug()
2609 vm->unplug_all_required = true; in virtio_mem_init_hotplug()
2610 dev_info(&vm->vdev->dev, "unplugging all memory is required\n"); in virtio_mem_init_hotplug()
2614 vm->memory_notifier.notifier_call = virtio_mem_memory_notifier_cb; in virtio_mem_init_hotplug()
2615 rc = register_memory_notifier(&vm->memory_notifier); in virtio_mem_init_hotplug()
2618 rc = register_virtio_mem_device(vm); in virtio_mem_init_hotplug()
2624 unregister_memory_notifier(&vm->memory_notifier); in virtio_mem_init_hotplug()
2626 memory_group_unregister(vm->mgid); in virtio_mem_init_hotplug()
2628 virtio_mem_delete_resource(vm); in virtio_mem_init_hotplug()
2633 static int virtio_mem_send_state_request(struct virtio_mem *vm, uint64_t addr, in virtio_mem_send_state_request() argument
2636 const uint64_t nb_vm_blocks = size / vm->device_block_size; in virtio_mem_send_state_request()
2638 .type = cpu_to_virtio16(vm->vdev, VIRTIO_MEM_REQ_STATE), in virtio_mem_send_state_request()
2639 .u.state.addr = cpu_to_virtio64(vm->vdev, addr), in virtio_mem_send_state_request()
2640 .u.state.nb_blocks = cpu_to_virtio16(vm->vdev, nb_vm_blocks), in virtio_mem_send_state_request()
2644 dev_dbg(&vm->vdev->dev, "requesting state: 0x%llx - 0x%llx\n", addr, in virtio_mem_send_state_request()
2647 switch (virtio_mem_send_request(vm, &req)) { in virtio_mem_send_state_request()
2649 return virtio16_to_cpu(vm->vdev, vm->resp.u.state.state); in virtio_mem_send_state_request()
2657 dev_dbg(&vm->vdev->dev, "requesting state failed: %d\n", rc); in virtio_mem_send_state_request()
2664 struct virtio_mem *vm = container_of(cb, struct virtio_mem, in virtio_mem_vmcore_pfn_is_ram() local
2670 if (!virtio_mem_contains_range(vm, addr, PAGE_SIZE)) in virtio_mem_vmcore_pfn_is_ram()
2672 if (!vm->plugged_size) in virtio_mem_vmcore_pfn_is_ram()
2679 mutex_lock(&vm->hotplug_mutex); in virtio_mem_vmcore_pfn_is_ram()
2681 addr = ALIGN_DOWN(addr, vm->device_block_size); in virtio_mem_vmcore_pfn_is_ram()
2682 if (addr != vm->last_block_addr) { in virtio_mem_vmcore_pfn_is_ram()
2683 rc = virtio_mem_send_state_request(vm, addr, in virtio_mem_vmcore_pfn_is_ram()
2684 vm->device_block_size); in virtio_mem_vmcore_pfn_is_ram()
2687 vm->last_block_plugged = true; in virtio_mem_vmcore_pfn_is_ram()
2689 vm->last_block_plugged = false; in virtio_mem_vmcore_pfn_is_ram()
2690 vm->last_block_addr = addr; in virtio_mem_vmcore_pfn_is_ram()
2693 is_ram = vm->last_block_plugged; in virtio_mem_vmcore_pfn_is_ram()
2694 mutex_unlock(&vm->hotplug_mutex); in virtio_mem_vmcore_pfn_is_ram()
2699 static int virtio_mem_init_kdump(struct virtio_mem *vm) in virtio_mem_init_kdump() argument
2702 dev_info(&vm->vdev->dev, "memory hot(un)plug disabled in kdump kernel\n"); in virtio_mem_init_kdump()
2703 vm->vmcore_cb.pfn_is_ram = virtio_mem_vmcore_pfn_is_ram; in virtio_mem_init_kdump()
2704 register_vmcore_cb(&vm->vmcore_cb); in virtio_mem_init_kdump()
2707 dev_warn(&vm->vdev->dev, "disabled in kdump kernel without vmcore\n"); in virtio_mem_init_kdump()
2712 static int virtio_mem_init(struct virtio_mem *vm) in virtio_mem_init() argument
2716 if (!vm->vdev->config->get) { in virtio_mem_init()
2717 dev_err(&vm->vdev->dev, "config access disabled\n"); in virtio_mem_init()
2722 virtio_cread_le(vm->vdev, struct virtio_mem_config, plugged_size, in virtio_mem_init()
2723 &vm->plugged_size); in virtio_mem_init()
2724 virtio_cread_le(vm->vdev, struct virtio_mem_config, block_size, in virtio_mem_init()
2725 &vm->device_block_size); in virtio_mem_init()
2726 virtio_cread_le(vm->vdev, struct virtio_mem_config, node_id, in virtio_mem_init()
2728 vm->nid = virtio_mem_translate_node_id(vm, node_id); in virtio_mem_init()
2729 virtio_cread_le(vm->vdev, struct virtio_mem_config, addr, &vm->addr); in virtio_mem_init()
2730 virtio_cread_le(vm->vdev, struct virtio_mem_config, region_size, in virtio_mem_init()
2731 &vm->region_size); in virtio_mem_init()
2734 if (vm->nid == NUMA_NO_NODE) in virtio_mem_init()
2735 vm->nid = memory_add_physaddr_to_nid(vm->addr); in virtio_mem_init()
2737 dev_info(&vm->vdev->dev, "start address: 0x%llx", vm->addr); in virtio_mem_init()
2738 dev_info(&vm->vdev->dev, "region size: 0x%llx", vm->region_size); in virtio_mem_init()
2739 dev_info(&vm->vdev->dev, "device block size: 0x%llx", in virtio_mem_init()
2740 (unsigned long long)vm->device_block_size); in virtio_mem_init()
2741 if (vm->nid != NUMA_NO_NODE && IS_ENABLED(CONFIG_NUMA)) in virtio_mem_init()
2742 dev_info(&vm->vdev->dev, "nid: %d", vm->nid); in virtio_mem_init()
2748 if (vm->in_kdump) in virtio_mem_init()
2749 return virtio_mem_init_kdump(vm); in virtio_mem_init()
2750 return virtio_mem_init_hotplug(vm); in virtio_mem_init()
2753 static int virtio_mem_create_resource(struct virtio_mem *vm) in virtio_mem_create_resource() argument
2759 const char *name = kstrdup(dev_name(&vm->vdev->dev), GFP_KERNEL); in virtio_mem_create_resource()
2765 vm->parent_resource = __request_mem_region(vm->addr, vm->region_size, in virtio_mem_create_resource()
2768 if (!vm->parent_resource) { in virtio_mem_create_resource()
2770 dev_warn(&vm->vdev->dev, "could not reserve device region\n"); in virtio_mem_create_resource()
2771 dev_info(&vm->vdev->dev, in virtio_mem_create_resource()
2777 vm->parent_resource->flags &= ~IORESOURCE_BUSY; in virtio_mem_create_resource()
2781 static void virtio_mem_delete_resource(struct virtio_mem *vm) in virtio_mem_delete_resource() argument
2785 if (!vm->parent_resource) in virtio_mem_delete_resource()
2788 name = vm->parent_resource->name; in virtio_mem_delete_resource()
2789 release_resource(vm->parent_resource); in virtio_mem_delete_resource()
2790 kfree(vm->parent_resource); in virtio_mem_delete_resource()
2792 vm->parent_resource = NULL; in virtio_mem_delete_resource()
2800 static bool virtio_mem_has_memory_added(struct virtio_mem *vm) in virtio_mem_has_memory_added() argument
2804 return walk_iomem_res_desc(IORES_DESC_NONE, flags, vm->addr, in virtio_mem_has_memory_added()
2805 vm->addr + vm->region_size, NULL, in virtio_mem_has_memory_added()
2811 struct virtio_mem *vm; in virtio_mem_probe() local
2817 vdev->priv = vm = kzalloc(sizeof(*vm), GFP_KERNEL); in virtio_mem_probe()
2818 if (!vm) in virtio_mem_probe()
2821 init_waitqueue_head(&vm->host_resp); in virtio_mem_probe()
2822 vm->vdev = vdev; in virtio_mem_probe()
2823 INIT_WORK(&vm->wq, virtio_mem_run_wq); in virtio_mem_probe()
2824 mutex_init(&vm->hotplug_mutex); in virtio_mem_probe()
2825 INIT_LIST_HEAD(&vm->next); in virtio_mem_probe()
2826 spin_lock_init(&vm->removal_lock); in virtio_mem_probe()
2827 hrtimer_init(&vm->retry_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); in virtio_mem_probe()
2828 vm->retry_timer.function = virtio_mem_timer_expired; in virtio_mem_probe()
2829 vm->retry_timer_ms = VIRTIO_MEM_RETRY_TIMER_MIN_MS; in virtio_mem_probe()
2830 vm->in_kdump = is_kdump_kernel(); in virtio_mem_probe()
2833 rc = virtio_mem_init_vq(vm); in virtio_mem_probe()
2838 rc = virtio_mem_init(vm); in virtio_mem_probe()
2845 if (!vm->in_kdump) { in virtio_mem_probe()
2846 atomic_set(&vm->config_changed, 1); in virtio_mem_probe()
2847 queue_work(system_freezable_wq, &vm->wq); in virtio_mem_probe()
2854 kfree(vm); in virtio_mem_probe()
2860 static void virtio_mem_deinit_hotplug(struct virtio_mem *vm) in virtio_mem_deinit_hotplug() argument
2869 mutex_lock(&vm->hotplug_mutex); in virtio_mem_deinit_hotplug()
2870 spin_lock_irq(&vm->removal_lock); in virtio_mem_deinit_hotplug()
2871 vm->removing = true; in virtio_mem_deinit_hotplug()
2872 spin_unlock_irq(&vm->removal_lock); in virtio_mem_deinit_hotplug()
2873 mutex_unlock(&vm->hotplug_mutex); in virtio_mem_deinit_hotplug()
2876 cancel_work_sync(&vm->wq); in virtio_mem_deinit_hotplug()
2877 hrtimer_cancel(&vm->retry_timer); in virtio_mem_deinit_hotplug()
2879 if (vm->in_sbm) { in virtio_mem_deinit_hotplug()
2884 virtio_mem_sbm_for_each_mb(vm, mb_id, in virtio_mem_deinit_hotplug()
2886 rc = virtio_mem_sbm_remove_mb(vm, mb_id); in virtio_mem_deinit_hotplug()
2888 virtio_mem_sbm_set_mb_state(vm, mb_id, in virtio_mem_deinit_hotplug()
2899 unregister_virtio_mem_device(vm); in virtio_mem_deinit_hotplug()
2900 unregister_memory_notifier(&vm->memory_notifier); in virtio_mem_deinit_hotplug()
2907 if (virtio_mem_has_memory_added(vm)) { in virtio_mem_deinit_hotplug()
2908 dev_warn(&vm->vdev->dev, in virtio_mem_deinit_hotplug()
2911 virtio_mem_delete_resource(vm); in virtio_mem_deinit_hotplug()
2912 kfree_const(vm->resource_name); in virtio_mem_deinit_hotplug()
2913 memory_group_unregister(vm->mgid); in virtio_mem_deinit_hotplug()
2917 if (vm->in_sbm) { in virtio_mem_deinit_hotplug()
2918 vfree(vm->sbm.mb_states); in virtio_mem_deinit_hotplug()
2919 vfree(vm->sbm.sb_states); in virtio_mem_deinit_hotplug()
2921 vfree(vm->bbm.bb_states); in virtio_mem_deinit_hotplug()
2925 static void virtio_mem_deinit_kdump(struct virtio_mem *vm) in virtio_mem_deinit_kdump() argument
2928 unregister_vmcore_cb(&vm->vmcore_cb); in virtio_mem_deinit_kdump()
2934 struct virtio_mem *vm = vdev->priv; in virtio_mem_remove() local
2936 if (vm->in_kdump) in virtio_mem_remove()
2937 virtio_mem_deinit_kdump(vm); in virtio_mem_remove()
2939 virtio_mem_deinit_hotplug(vm); in virtio_mem_remove()
2945 kfree(vm); in virtio_mem_remove()
2951 struct virtio_mem *vm = vdev->priv; in virtio_mem_config_changed() local
2953 if (unlikely(vm->in_kdump)) in virtio_mem_config_changed()
2956 atomic_set(&vm->config_changed, 1); in virtio_mem_config_changed()
2957 virtio_mem_retry(vm); in virtio_mem_config_changed()