From mboxrd@z Thu Jan 1 00:00:00 1970 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 B5DFF1061B2B for ; Tue, 31 Mar 2026 11:07:33 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1w7Wvp-0003ON-4s; Tue, 31 Mar 2026 07:06:49 -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 1w7Wvn-0003NS-Ly for qemu-devel@nongnu.org; Tue, 31 Mar 2026 07:06:47 -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 1w7Wvm-0001Ny-0v for qemu-devel@nongnu.org; Tue, 31 Mar 2026 07:06:47 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1774955204; 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: in-reply-to:in-reply-to:references:references; bh=YTJPUWbhFIXDCiSg2VdcJlH45wmBHYIoy7jfBvyQTvU=; b=Ucb37UYR5X/fPFJfobl3hxZoP40ZytGpcRknTrVQaht9bGyeM+b8vkCvQe0621XaOu9GwR kmAhW0+mhVBNBSisH+mdFs3dC4lhCYZf3NZA1RnFtVIB8QLzNqJfeWd/Pvnyyfs4s777AG TiBS8BJvLT5cXDK/Q9hHN7An/5oHS/k= Received: from mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-515-7m_4PbUzMn6-JDaPoxzGfQ-1; Tue, 31 Mar 2026 07:06:41 -0400 X-MC-Unique: 7m_4PbUzMn6-JDaPoxzGfQ-1 X-Mimecast-MFC-AGG-ID: 7m_4PbUzMn6-JDaPoxzGfQ_1774955199 Received: from mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.93]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id B1E831956065; Tue, 31 Mar 2026 11:06:39 +0000 (UTC) Received: from blackfin.pond.sub.org (unknown [10.44.22.6]) by mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 58716180075B; Tue, 31 Mar 2026 11:06:39 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 0990421E6A28; Tue, 31 Mar 2026 13:06:37 +0200 (CEST) From: Markus Armbruster To: Peter Xu Cc: Samuel Zhang , qemu-devel@nongnu.org, farosas@suse.de, lizhijian@fujitsu.com, eblake@redhat.com, Emily.Deng@amd.com, Victor.Zhao@amd.com, PengJu.Zhou@amd.com, Qing.Ma@amd.com Subject: Re: [PATCH v3] migration/rdma: add x-rdma-chunk-size parameter In-Reply-To: (Peter Xu's message of "Mon, 30 Mar 2026 12:10:13 -0400") References: <20260327065006.2567463-1-guoqing.zhang@amd.com> Date: Tue, 31 Mar 2026 13:06:37 +0200 Message-ID: <875x6ctg02.fsf@pond.sub.org> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.93 Received-SPF: pass client-ip=170.10.129.124; envelope-from=armbru@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: 27 X-Spam_score: 2.7 X-Spam_bar: ++ X-Spam_report: (2.7 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.54, 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_SBL_CSS=3.335, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=1, RCVD_IN_VALIDITY_RPBL_BLOCKED=1, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development 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 Peter Xu writes: [...] > One thing to mention is RDMA migration is in odd-fixes stage, actually it > doesn't have a real maintainer so it is kind of "orphaned". In this case, > I actually won't suggest we add any new knobs for performance reasons. Good point. > Do you have a strong reason to propose this patch to land upstream? Is it > used in production systems and it solves some real problems for you? If you use it in production, finding an upstream maintainer is in your best interest. Give it a thought. > I also wonder what Zhijian would say on this. > > Thanks,