From patchwork Tue Sep 15 10:38:01 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christian Schoenebeck X-Patchwork-Id: 273589 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=-12.8 required=3.0 tests=BAYES_00, DATE_IN_PAST_12_24, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PULL_REQUEST, MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED 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 AD8ECC433E2 for ; Wed, 16 Sep 2020 09:53:45 +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 5F965221E8 for ; Wed, 16 Sep 2020 09:53:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=crudebyte.com header.i=@crudebyte.com header.b="euLCYRSG" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5F965221E8 Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=crudebyte.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:50500 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kIU8F-0007pS-Fo for qemu-devel@archiver.kernel.org; Wed, 16 Sep 2020 05:53:43 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:53838) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kIU79-0006Yb-HK for qemu-devel@nongnu.org; Wed, 16 Sep 2020 05:52:35 -0400 Received: from lizzy.crudebyte.com ([91.194.90.13]:33753) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kIU77-0000Zv-NN for qemu-devel@nongnu.org; Wed, 16 Sep 2020 05:52:35 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=crudebyte.com; s=lizzy; h=Cc:To:Subject:Date:From:Message-Id:Content-Type: Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Content-ID: Content-Description; bh=NfMJPFHOyqNdikdMcNm3dv6BKxSuV/xvG2I7xLjgPgY=; b=euLCY RSGI3na/zFRfVSPgmJ32N+3h8S0GSeMdsG2JeR3O2MZdPU1kaIkNYLYRdjfuFRMecgm1Qbp/6HQvR 4ruTOCVuVhkhR94S3q1K9GJ+I8A2+jyo+s/yTPh3SVb0x07VHp3BUAE+mmWcF/xzz6ghzVyD11jv1 aDll0Oyfr5Yr0VTYFzt1NIl7rpAs5nK6NdlvxouI8AYTzyrjr061MuIv26m5VnbgtGUBTys0tjCbD NYmTXyqsrTLHWxTClMB6mC/l+nInsUjPsZj1dITdAuGYUtNNKck4k1t+iT7knhKkYDmSyqgdD4CcA PJVcOzIQoAXU5XWl82Zgbk3wVZDCw==; Message-Id: From: Christian Schoenebeck Date: Tue, 15 Sep 2020 12:38:01 +0200 Subject: [PULL 0/2] 9p queue To: qemu-devel@nongnu.org, Peter Maydell Cc: Greg Kurz Received-SPF: none client-ip=91.194.90.13; envelope-from=c418f935ac6aed9aa1dc0ceb4b19044a9b7b7968@lizzy.crudebyte.com; helo=lizzy.crudebyte.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/16 05:20:12 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -9 X-Spam_score: -1.0 X-Spam_bar: - X-Spam_report: (-1.0 / 5.0 requ) BAYES_00=-1.9, DATE_IN_PAST_12_24=1.049, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=no 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: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" The following changes since commit 2d2c73d0e3d504a61f868e46e6abd5643f38091b: Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20200914-1' into staging (2020-09-14 16:03:08 +0100) are available in the Git repository at: https://github.com/cschoenebeck/qemu.git tags/pull-9p-20200915 for you to fetch changes up to c418f935ac6aed9aa1dc0ceb4b19044a9b7b7968: 9pfs: disable msize warning for synth driver (2020-09-15 12:12:03 +0200) ---------------------------------------------------------------- The intention of the following two patches is making users aware about the negative file I/O performance impact when using a very low value for 9P client parameter 'msize', which especially is the case if no 'msize' parameter was supplied by the user with a 9P Linux client at all. All it does is logging a performance warning on host side (once) in that case. By setting 'msize' on client side to any value larger than 8192 the performance warning will disappear. See https://wiki.qemu.org/Documentation/9psetup#msize for details. ---------------------------------------------------------------- Christian Schoenebeck (2): 9pfs: log warning if msize <= 8192 9pfs: disable msize warning for synth driver fsdev/file-op-9p.h | 4 ++++ hw/9pfs/9p-synth.c | 2 ++ hw/9pfs/9p.c | 9 +++++++++ 3 files changed, 15 insertions(+)