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 188FAC32772 for ; Tue, 23 Aug 2022 20:37:20 +0000 (UTC) Received: from localhost ([::1]:49574 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oQaeE-0003lA-OL for qemu-devel@archiver.kernel.org; Tue, 23 Aug 2022 16:37:18 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:41678) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oQacu-0002sM-P1 for qemu-devel@nongnu.org; Tue, 23 Aug 2022 16:35:56 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]:51624) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oQacs-0005Rj-JE for qemu-devel@nongnu.org; Tue, 23 Aug 2022 16:35:56 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1661286954; 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=NkcUS6jctxv2huOZfChFO2tXAUw16Qu/r7qf06I4nes=; b=ZbBZzgx/WKlwmCAuPaIXHiLA9wHzVFp5CBUQxOR1Nts4Q9l91s1IP9eebmEl7fMFeWp6kH C+aQOvRydVc+I2ltVrY0H2heUoKyOpP5XA56wraT8TlCINU0jYNunkw8loL+lyphastvb4 4netHqxwrwDjm5u06fFxAhYrFCVOhX8= Received: from mimecast-mx02.redhat.com (mx3-rdu2.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-85-0Dq9_3OdOS-0kbzBaj-HFw-1; Tue, 23 Aug 2022 16:35:49 -0400 X-MC-Unique: 0Dq9_3OdOS-0kbzBaj-HFw-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 42E3238164CE; Tue, 23 Aug 2022 20:35:47 +0000 (UTC) Received: from localhost (unknown [10.39.192.115]) by smtp.corp.redhat.com (Postfix) with ESMTP id 563B01121315; Tue, 23 Aug 2022 20:35:45 +0000 (UTC) Date: Tue, 23 Aug 2022 16:35:43 -0400 From: Stefan Hajnoczi To: Vladimir Sementsov-Ogievskiy Cc: qemu-devel@nongnu.org, Paolo Bonzini , "Denis V. Lunev" , Peter Xu , Yanan Wang , Marcel Apfelbaum , "Richard W.M. Jones" , qemu-block@nongnu.org, John Snow , integration@gluster.org, Vladimir Sementsov-Ogievskiy , David Hildenbrand , Laurent Vivier , Markus Armbruster , Raphael Norwitz , Richard Henderson , Fam Zheng , sgarzare@redhat.com, Alberto Faria , Kevin Wolf , Wen Congyang , Eric Blake , Hanna Reitz , Philippe =?iso-8859-1?Q?Mathieu-Daud=E9?= , Eduardo Habkost , "Michael S. Tsirkin" , Thomas Huth , Jeff Cody , Xie Changlong Subject: Re: [RFC v4 00/11] blkio: add libblkio BlockDriver Message-ID: References: <20220822222402.176088-1-stefanha@redhat.com> <15ad1a46-00e5-ccc8-1c7e-f6061bc68c0c@yandex-team.ru> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="Q9ieYPhee3N3ySSd" Content-Disposition: inline In-Reply-To: <15ad1a46-00e5-ccc8-1c7e-f6061bc68c0c@yandex-team.ru> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 Received-SPF: pass client-ip=170.10.129.124; envelope-from=stefanha@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 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_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=unavailable 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" --Q9ieYPhee3N3ySSd Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Aug 23, 2022 at 08:31:03PM +0300, Vladimir Sementsov-Ogievskiy wrot= e: > On 8/23/22 01:23, Stefan Hajnoczi wrote: > > The remainder of the patch series reworks the existing QEMU bdrv_regist= er_buf() > > API so virtio-blk emulation efficiently map guest RAM for libblkio - so= me > > libblkio drivers require that I/O buffer memory is pre-registered (thin= k VFIO, > > vhost, etc). >=20 > Hi! >=20 > So patches 01-11 are for performance optimization? Don't you have some pe= rformance measurements for it? Good point, I'll gather some data and share it. Stefan --Q9ieYPhee3N3ySSd Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEhpWov9P5fNqsNXdanKSrs4Grc8gFAmMFOh8ACgkQnKSrs4Gr c8gd/wgAixakci4mYgBdS1bzYWvwGDc+x21opL1FBQup4oOYqjEWTg8is+pe1e5f /eWn0qvbN438tu3iNM3FvNvzd//JJy7auoKOdTzerhL6U/DXqEWO7vRwB9TIFVJI 3NtDc1ojCYmDZoldx0onl0PO302iQUCXWu5/55fT9LeJvJaFZ22KJvKWD8JRPEJN pFf2wlXb6hzBEJRpgdxMAUIKJgIpwL2C3JUKPzkeNi+5DZ7pwyThyUISwE6GRlmc mnreN/vgYl290cV32gE+f+guvwFU/tJhxRlwQYtR15GSnNSWam+G10eEzzGzVAvw uley5ZWZFVCIhp3EvUuTnYy58SMOSw== =rBXJ -----END PGP SIGNATURE----- --Q9ieYPhee3N3ySSd--