From patchwork Thu Feb 16 11:47:50 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Hildenbrand X-Patchwork-Id: 13142978 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 16B75C636D6 for ; Thu, 16 Feb 2023 11:48:57 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pSck4-0004B7-3x; Thu, 16 Feb 2023 06:48:00 -0500 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 1pSck2-00046t-GO for qemu-devel@nongnu.org; Thu, 16 Feb 2023 06:47:58 -0500 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 1pSck1-0005bW-1K for qemu-devel@nongnu.org; Thu, 16 Feb 2023 06:47:58 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1676548076; 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; bh=RKBmBa98oz/JAvbelrA2uoTDIWgdyA7kiBXOFr+vRp8=; b=MnaPm0dXnRpqn3f0BvVeEb3d+isc3Yo59WkFVt06Zk6dc1m0iSVPU1pZeVYmQT9Leou4EM DjXUfsXx8927H+qPyWCnR2vHXJAgD+Jh+6QKksudFdNe+hNQpcQAKueLS5vZm1uAf9bzHJ UNUQiaukBrtjt8mPtVCe9NA836gx+XY= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-451-1KFeyNaFPJ6ZJYFFwN1fZA-1; Thu, 16 Feb 2023 06:47:55 -0500 X-MC-Unique: 1KFeyNaFPJ6ZJYFFwN1fZA-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.rdu2.redhat.com [10.11.54.7]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id C873A811E9C for ; Thu, 16 Feb 2023 11:47:54 +0000 (UTC) Received: from t480s.fritz.box (unknown [10.39.195.58]) by smtp.corp.redhat.com (Postfix) with ESMTP id 8F2D2140EBF6; Thu, 16 Feb 2023 11:47:53 +0000 (UTC) From: David Hildenbrand To: qemu-devel@nongnu.org Cc: David Hildenbrand , "Michael S. Tsirkin" , Stefan Hajnoczi , "Dr . David Alan Gilbert" Subject: [PATCH v1 0/2] vhost: memslot handling improvements Date: Thu, 16 Feb 2023 12:47:50 +0100 Message-Id: <20230216114752.198627-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 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_H2=-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 Following up on my previous work to make virtio-mem consume multiple memslots dynamically [1] that requires precise accounting between used vs. reserved memslots, I realized that vhost makes this extra hard by filtering out some memory region sections (so they don't consume a memslot) in the vhost-user case, which messes up the whole memslot accounting. This series fixes what I found to be broken and prepares for more work on [1]. Further, it cleanes up the merge checks that I consider unnecessary. [1] https://lkml.kernel.org/r/20211027124531.57561-8-david@redhat.com Cc: "Michael S. Tsirkin" Cc: Stefan Hajnoczi Cc: Dr. David Alan Gilbert David Hildenbrand (2): vhost: Defer filtering memory sections until building the vhost memory structure vhost: Remove vhost_backend_can_merge() callback hw/virtio/vhost-user.c | 14 ----- hw/virtio/vhost-vdpa.c | 1 - hw/virtio/vhost.c | 85 ++++++++++++++++++++----------- include/hw/virtio/vhost-backend.h | 4 -- 4 files changed, 56 insertions(+), 48 deletions(-) Acked-by: Stefan Hajnoczi