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 X-Spam-Level: X-Spam-Status: No, score=-13.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 55772C433C1 for ; Mon, 29 Mar 2021 17:27:30 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id D530B61927 for ; Mon, 29 Mar 2021 17:27:29 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D530B61927 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:60522 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lQvfk-0004Xj-Sj for qemu-devel@archiver.kernel.org; Mon, 29 Mar 2021 13:27:28 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:35290) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lQveY-00038P-Op for qemu-devel@nongnu.org; Mon, 29 Mar 2021 13:26:14 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:46430) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lQveX-0003QE-6C for qemu-devel@nongnu.org; Mon, 29 Mar 2021 13:26:14 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1617038772; 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=RMPJG0OAcrq5Q7J7uxo0xY5EsYBQlgaVN7LY55TFqbU=; b=NaOGrBZEg/OS9pR97fcmWRE2f0kvRkXVX/lcmipt5VStCNeg8ExwqThH9/XjaEnt+xKFax 96n4B1kPPWFgOMqr+Aw1iWYuqVF4TtpxFodl8PJXVB3P/r69ipH5fS+d6mbgy2ep3xrCDI 1AicNRkaJFR+FBuwUplsqEPK3w8lD+s= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-255-F2nxlgcpMWeiJOI8WfIpug-1; Mon, 29 Mar 2021 13:26:08 -0400 X-MC-Unique: F2nxlgcpMWeiJOI8WfIpug-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 6843D96E540; Mon, 29 Mar 2021 17:26:07 +0000 (UTC) Received: from localhost (ovpn-114-227.ams2.redhat.com [10.36.114.227]) by smtp.corp.redhat.com (Postfix) with ESMTP id E8E105C582; Mon, 29 Mar 2021 17:26:03 +0000 (UTC) Date: Mon, 29 Mar 2021 18:26:02 +0100 From: Stefan Hajnoczi To: Greg Kurz Subject: Re: [RFC 6/8] virtio-blk: Use virtio_bus_set_host_notifiers() Message-ID: References: <20210325150735.1098387-1-groug@kaod.org> <20210325150735.1098387-7-groug@kaod.org> MIME-Version: 1.0 In-Reply-To: <20210325150735.1098387-7-groug@kaod.org> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=stefanha@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="9wHZFhXVQcxhUY+b" Content-Disposition: inline Received-SPF: pass client-ip=216.205.24.124; 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, 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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Fam Zheng , Kevin Wolf , qemu-block@nongnu.org, "Michael S. Tsirkin" , qemu-devel@nongnu.org, Max Reitz , Paolo Bonzini , David Gibson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" --9wHZFhXVQcxhUY+b Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Mar 25, 2021 at 04:07:33PM +0100, Greg Kurz wrote: > This allows the virtio-blk-pci device to batch additions and deletions > of host notifiers. This significantly improves boot time of VMs with a > high number of vCPUs, e.g. from 3m26.408s down to 0m59.923s for a pseries > machine with 384 vCPUs. >=20 > Signed-off-by: Greg Kurz > --- > hw/block/dataplane/virtio-blk.c | 25 ++++++------------------- > 1 file changed, 6 insertions(+), 19 deletions(-) Reviewed-by: Stefan Hajnoczi --9wHZFhXVQcxhUY+b Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEhpWov9P5fNqsNXdanKSrs4Grc8gFAmBiDaoACgkQnKSrs4Gr c8hS/gf/WYPxFv6NMxHFUg5PP8TBezAHKGcN4GInxk9h+CPITj61zVUtPq5Wnh4r xnJsSAnxmuNzG8K0EWNzx5U4gFX6hF7r3yfZykZusoSqdqcVxBoPCqTmlrkxas8b 1GiL3vmf5I5C+l/pIOe6T6HF+/uSvkv2sgzzi9FWMzMxcLXSGczJPcYO+EsHTjrw LaI/W/iLWEFfPHHfbdUB9DXGEUaR36uM23nZABoC3qSLGwM0Nz0GaRQtYhe+92q/ fa+U3M2iKtjIq3MA4v+Gye612xeDUaIx6bfbtoNPrBP4m6Ecu3eIL1o8QCSWGY0b ZNBhvEmCMoF34rRTrsNNxOhPueLQGw== =V+mu -----END PGP SIGNATURE----- --9wHZFhXVQcxhUY+b--