From patchwork Thu Oct 12 14:36:52 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Hildenbrand X-Patchwork-Id: 13419335 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 9674ACDB482 for ; Thu, 12 Oct 2023 14:38:21 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qqwoS-0002pg-5R; Thu, 12 Oct 2023 10:37:20 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qqwoQ-0002nh-84 for qemu-devel@nongnu.org; Thu, 12 Oct 2023 10:37:18 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qqwoO-0005gz-KP for qemu-devel@nongnu.org; Thu, 12 Oct 2023 10:37:17 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1697121436; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ScThcU6EQo33ppZiwGwCd9UPtsaQwoUGXTwqOmM9gNk=; b=HmSq2XEo8zVhATlJW7YlE5mK1yJSdUiEbKnuiopVw18j+fN3IwlfBKd1AJepo7kO0+gup0 PPCO8CtzkdN9uAJXeFQXS5BN93i5nJ9IS5UE+NLJZKkqOltKzeksNE82rKlR04lRvx6oCd GCh5IwyC3+mcFdlXkcCZNGhoJY6PfcM= Received: from mimecast-mx02.redhat.com (mx-ext.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-341-3DXaPg8RMPGSZqjNqnW5bw-1; Thu, 12 Oct 2023 10:37:14 -0400 X-MC-Unique: 3DXaPg8RMPGSZqjNqnW5bw-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.rdu2.redhat.com [10.11.54.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id BF14B1C113E1; Thu, 12 Oct 2023 14:37:13 +0000 (UTC) Received: from t14s.fritz.box (unknown [10.39.192.176]) by smtp.corp.redhat.com (Postfix) with ESMTP id EF29C1C060DF; Thu, 12 Oct 2023 14:37:12 +0000 (UTC) From: David Hildenbrand To: qemu-devel@nongnu.org Cc: David Hildenbrand , "Maciej S . Szmigiero" , "Michael S . Tsirkin" Subject: [GIT PULL 15/18] virtio-mem: Update state to match bitmap as soon as it's been migrated Date: Thu, 12 Oct 2023 16:36:52 +0200 Message-ID: <20231012143655.114631-16-david@redhat.com> In-Reply-To: <20231012143655.114631-1-david@redhat.com> References: <20231012143655.114631-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.7 Received-SPF: pass client-ip=170.10.129.124; envelope-from=david@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org It's cleaner and future-proof to just have other state that depends on the bitmap state to be updated as soon as possible when restoring the bitmap. So factor out informing RamDiscardListener into a functon and call it in case of early migration right after we restored the bitmap. Message-ID: <20230926185738.277351-16-david@redhat.com> Reviewed-by: Maciej S. Szmigiero Reviewed-by: Michael S. Tsirkin Signed-off-by: David Hildenbrand --- hw/virtio/virtio-mem.c | 26 +++++++++++++++++++++----- 1 file changed, 21 insertions(+), 5 deletions(-) diff --git a/hw/virtio/virtio-mem.c b/hw/virtio/virtio-mem.c index 0b0e6c5090..0cf47df9cf 100644 --- a/hw/virtio/virtio-mem.c +++ b/hw/virtio/virtio-mem.c @@ -984,9 +984,8 @@ static int virtio_mem_restore_unplugged(VirtIOMEM *vmem) virtio_mem_discard_range_cb); } -static int virtio_mem_post_load(void *opaque, int version_id) +static int virtio_mem_post_load_bitmap(VirtIOMEM *vmem) { - VirtIOMEM *vmem = VIRTIO_MEM(opaque); RamDiscardListener *rdl; int ret; @@ -1001,6 +1000,20 @@ static int virtio_mem_post_load(void *opaque, int version_id) return ret; } } + return 0; +} + +static int virtio_mem_post_load(void *opaque, int version_id) +{ + VirtIOMEM *vmem = VIRTIO_MEM(opaque); + int ret; + + if (!vmem->early_migration) { + ret = virtio_mem_post_load_bitmap(vmem); + if (ret) { + return ret; + } + } /* * If shared RAM is migrated using the file content and not using QEMU, @@ -1043,7 +1056,7 @@ static int virtio_mem_post_load_early(void *opaque, int version_id) int ret; if (!vmem->prealloc) { - return 0; + goto post_load_bitmap; } /* @@ -1051,7 +1064,7 @@ static int virtio_mem_post_load_early(void *opaque, int version_id) * don't mess with preallocation and postcopy. */ if (migrate_ram_is_ignored(rb)) { - return 0; + goto post_load_bitmap; } /* @@ -1084,7 +1097,10 @@ static int virtio_mem_post_load_early(void *opaque, int version_id) return -EBUSY; } } - return 0; + +post_load_bitmap: + /* Finally, update any other state to be consistent with the new bitmap. */ + return virtio_mem_post_load_bitmap(vmem); } typedef struct VirtIOMEMMigSanityChecks {