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[188.86.86.233]) by smtp.gmail.com with ESMTPSA id m35sm1212614wms.2.2021.11.01.15.09.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 01 Nov 2021 15:09:32 -0700 (PDT) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: b63a24c9-cad6-4c63-a6e5-34cebeecd0e3 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1635804575; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=FIlkv3kUVM5FLjDY6YlHGmvpDrEJaIZ60b+7KENr5m4=; b=AI7g+aK5oG1K9x5wMvy6YzafdFzn2EC+YuW65LKn4s1BAB/thT31Dy+x+7T5dstdCM+LO3 0Bm+1STmd8ppX9q41iiXSZKEDUpNBBUvZGHyufKixIdlXt9klDW7srlOXLBs5edkFLAMTF 0Yckj1i5tJtwDmR4HGDi941NsnZIUyM= X-MC-Unique: uHm58rQjOLmW1Rgc9VYPKg-1 X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=FIlkv3kUVM5FLjDY6YlHGmvpDrEJaIZ60b+7KENr5m4=; b=G/wmcO5YkS4UhvdiRSY9uBnU68dtvtaRGOqSWbovhxCaZ0zVr5zT2FT0iKpjvPhLNE TaMV2I+xRTv2rj2DOf7xokOUrCF1Ug0Cg85J8uE/nnkt+i4HXYtvF2+Sf1tGnNiIsw2p BOE5bEWN2ERK7WnCGB36lo1sqMMD/uIZDFxpw+NBaT2+OzYPtZPBTO4mgFWKf03nazYE /DM01G6U+OGnIDpQMiR9QhPiSGNdHdUgvYrh9QzHZwK8PszxWh5wvHLIHQjLR2qnOqmc AcL7fTZeX/7qvgr8K579rGaNVkSHsnmEMrmmCMIA1WQdKdoUEkGOME5tJXK1nClrwwjh tKyw== X-Gm-Message-State: AOAM532A3kdVZ2w5s7POOZeVhrpuAEmd7/pCXq+2RgkCk1H22ZjTBU9c Xvmokrc8oiuypsVQBUtZcUXKq0bSkLLSff9m7qx+vBxsLHC5f4qEc6VXgHqB1u9h9D+YX3klu1r uUj+JIUjQj+3XHGSAv5R9XblzbJ8= X-Received: by 2002:a5d:64af:: with SMTP id m15mr12543614wrp.267.1635804573221; Mon, 01 Nov 2021 15:09:33 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzrZQZMxAe13255F4Umt/lsvtqR2XTX2d+P8MJlbDMrZGA3GCpF4nzZPJktxVFBm5Hby8r3Kg== X-Received: by 2002:a5d:64af:: with SMTP id m15mr12543584wrp.267.1635804573009; Mon, 01 Nov 2021 15:09:33 -0700 (PDT) From: Juan Quintela To: qemu-devel@nongnu.org Cc: Markus Armbruster , David Hildenbrand , Eduardo Habkost , xen-devel@lists.xenproject.org, Richard Henderson , Stefano Stabellini , Marcel Apfelbaum , Eric Blake , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , kvm@vger.kernel.org, Peter Xu , =?utf-8?q?Marc-Andr?= =?utf-8?q?=C3=A9_Lureau?= , Paul Durrant , Paolo Bonzini , "Dr. David Alan Gilbert" , Juan Quintela , "Michael S. Tsirkin" , Anthony Perard Subject: [PULL 14/20] virtio-mem: Drop precopy notifier Date: Mon, 1 Nov 2021 23:09:06 +0100 Message-Id: <20211101220912.10039-15-quintela@redhat.com> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20211101220912.10039-1-quintela@redhat.com> References: <20211101220912.10039-1-quintela@redhat.com> MIME-Version: 1.0 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=quintela@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com From: David Hildenbrand 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 Acked-by: Peter Xu Signed-off-by: David Hildenbrand Reviewed-by: Juan Quintela Signed-off-by: Juan Quintela --- 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,