From: Juan Quintela <quintela@redhat.com>
To: qemu-devel@nongnu.org
Cc: "Stefano Stabellini" <sstabellini@kernel.org>,
"Eduardo Habkost" <ehabkost@redhat.com>,
kvm@vger.kernel.org, "David Hildenbrand" <david@redhat.com>,
"Philippe Mathieu-Daudé" <philmd@redhat.com>,
"Paul Durrant" <paul@xen.org>,
"Richard Henderson" <richard.henderson@linaro.org>,
"Markus Armbruster" <armbru@redhat.com>,
"Peter Xu" <peterx@redhat.com>,
"Dr. David Alan Gilbert" <dgilbert@redhat.com>,
"Juan Quintela" <quintela@redhat.com>,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
"Marc-André Lureau" <marcandre.lureau@redhat.com>,
"Anthony Perard" <anthony.perard@citrix.com>,
xen-devel@lists.xenproject.org, "Eric Blake" <eblake@redhat.com>
Subject: [PULL 14/20] virtio-mem: Drop precopy notifier
Date: Mon, 1 Nov 2021 23:09:06 +0100 [thread overview]
Message-ID: <20211101220912.10039-15-quintela@redhat.com> (raw)
In-Reply-To: <20211101220912.10039-1-quintela@redhat.com>
From: David Hildenbrand <david@redhat.com>
Migration code now properly handles RAMBlocks which are indirectly managed
by a RamDiscardManager. No need for manual handling via the free page
optimization interface, let's get rid of it.
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Peter Xu <peterx@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
---
include/hw/virtio/virtio-mem.h | 3 ---
hw/virtio/virtio-mem.c | 34 ----------------------------------
2 files changed, 37 deletions(-)
diff --git a/include/hw/virtio/virtio-mem.h b/include/hw/virtio/virtio-mem.h
index 9a6e348fa2..a5dd6a493b 100644
--- a/include/hw/virtio/virtio-mem.h
+++ b/include/hw/virtio/virtio-mem.h
@@ -65,9 +65,6 @@ struct VirtIOMEM {
/* notifiers to notify when "size" changes */
NotifierList size_change_notifiers;
- /* don't migrate unplugged memory */
- NotifierWithReturn precopy_notifier;
-
/* listeners to notify on plug/unplug activity. */
QLIST_HEAD(, RamDiscardListener) rdl_list;
};
diff --git a/hw/virtio/virtio-mem.c b/hw/virtio/virtio-mem.c
index 284096ec5f..d5a578142b 100644
--- a/hw/virtio/virtio-mem.c
+++ b/hw/virtio/virtio-mem.c
@@ -776,7 +776,6 @@ static void virtio_mem_device_realize(DeviceState *dev, Error **errp)
host_memory_backend_set_mapped(vmem->memdev, true);
vmstate_register_ram(&vmem->memdev->mr, DEVICE(vmem));
qemu_register_reset(virtio_mem_system_reset, vmem);
- precopy_add_notifier(&vmem->precopy_notifier);
/*
* Set ourselves as RamDiscardManager before the plug handler maps the
@@ -796,7 +795,6 @@ static void virtio_mem_device_unrealize(DeviceState *dev)
* found via an address space anymore. Unset ourselves.
*/
memory_region_set_ram_discard_manager(&vmem->memdev->mr, NULL);
- precopy_remove_notifier(&vmem->precopy_notifier);
qemu_unregister_reset(virtio_mem_system_reset, vmem);
vmstate_unregister_ram(&vmem->memdev->mr, DEVICE(vmem));
host_memory_backend_set_mapped(vmem->memdev, false);
@@ -1089,43 +1087,11 @@ static void virtio_mem_set_block_size(Object *obj, Visitor *v, const char *name,
vmem->block_size = value;
}
-static int virtio_mem_precopy_exclude_range_cb(const VirtIOMEM *vmem, void *arg,
- uint64_t offset, uint64_t size)
-{
- void * const host = qemu_ram_get_host_addr(vmem->memdev->mr.ram_block);
-
- qemu_guest_free_page_hint(host + offset, size);
- return 0;
-}
-
-static void virtio_mem_precopy_exclude_unplugged(VirtIOMEM *vmem)
-{
- virtio_mem_for_each_unplugged_range(vmem, NULL,
- virtio_mem_precopy_exclude_range_cb);
-}
-
-static int virtio_mem_precopy_notify(NotifierWithReturn *n, void *data)
-{
- VirtIOMEM *vmem = container_of(n, VirtIOMEM, precopy_notifier);
- PrecopyNotifyData *pnd = data;
-
- switch (pnd->reason) {
- case PRECOPY_NOTIFY_AFTER_BITMAP_SYNC:
- virtio_mem_precopy_exclude_unplugged(vmem);
- break;
- default:
- break;
- }
-
- return 0;
-}
-
static void virtio_mem_instance_init(Object *obj)
{
VirtIOMEM *vmem = VIRTIO_MEM(obj);
notifier_list_init(&vmem->size_change_notifiers);
- vmem->precopy_notifier.notify = virtio_mem_precopy_notify;
QLIST_INIT(&vmem->rdl_list);
object_property_add(obj, VIRTIO_MEM_SIZE_PROP, "size", virtio_mem_get_size,
--
2.33.1
next prev parent reply other threads:[~2021-11-01 22:20 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-01 22:08 [PULL 00/20] Migration 20211031 patches Juan Quintela
2021-11-01 22:08 ` [PULL 01/20] migration/rdma: Fix out of order wrid Juan Quintela
2021-11-01 22:08 ` [PULL 02/20] KVM: introduce dirty_pages and kvm_dirty_ring_enabled Juan Quintela
2021-11-01 22:08 ` [PULL 03/20] memory: make global_dirty_tracking a bitmask Juan Quintela
2021-11-01 22:08 ` [PULL 04/20] migration/dirtyrate: introduce struct and adjust DirtyRateStat Juan Quintela
2021-11-04 20:54 ` Eric Blake
2021-11-01 22:08 ` [PULL 05/20] migration/dirtyrate: adjust order of registering thread Juan Quintela
2021-11-01 22:08 ` [PULL 06/20] migration/dirtyrate: move init step of calculation to main thread Juan Quintela
2021-11-01 22:08 ` [PULL 07/20] migration/dirtyrate: implement dirty-ring dirtyrate calculation Juan Quintela
2021-11-04 22:05 ` Philippe Mathieu-Daudé
2021-11-06 11:45 ` Juan Quintela
2021-11-01 22:09 ` [PULL 08/20] migration: Make migration blocker work for snapshots too Juan Quintela
2021-11-01 22:09 ` [PULL 09/20] migration: Add migrate_add_blocker_internal() Juan Quintela
2021-11-01 22:09 ` [PULL 10/20] dump-guest-memory: Block live migration Juan Quintela
2021-11-01 22:09 ` [PULL 11/20] memory: Introduce replay_discarded callback for RamDiscardManager Juan Quintela
2021-11-01 22:09 ` [PULL 12/20] virtio-mem: Implement replay_discarded RamDiscardManager callback Juan Quintela
2021-11-01 22:09 ` [PULL 13/20] migration/ram: Handle RAMBlocks with a RamDiscardManager on the migration source Juan Quintela
2021-11-01 22:09 ` Juan Quintela [this message]
2021-11-01 22:09 ` [PULL 15/20] migration/postcopy: Handle RAMBlocks with a RamDiscardManager on the destination Juan Quintela
2021-11-01 22:09 ` [PULL 16/20] migration: Simplify alignment and alignment checks Juan Quintela
2021-11-01 22:09 ` [PULL 17/20] migration/ram: Factor out populating pages readable in ram_block_populate_pages() Juan Quintela
2021-11-01 22:09 ` [PULL 18/20] migration/ram: Handle RAMBlocks with a RamDiscardManager on background snapshots Juan Quintela
2021-11-01 22:09 ` [PULL 19/20] memory: introduce total_dirty_pages to stat dirty pages Juan Quintela
2021-11-01 22:09 ` [PULL 20/20] migration/dirtyrate: implement dirty-bitmap dirtyrate calculation Juan Quintela
2021-11-02 15:45 ` [PULL 00/20] Migration 20211031 patches Richard Henderson
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