Cover Letter Detail
Show a cover letter.
GET /api/1.1/covers/2225142/?format=api
{ "id": 2225142, "url": "http://patchwork.ozlabs.org/api/1.1/covers/2225142/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/cover/20260420201317.30199-1-junjie.cao@intel.com/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/1.1/projects/14/?format=api", "name": "QEMU Development", "link_name": "qemu-devel", "list_id": "qemu-devel.nongnu.org", "list_email": "qemu-devel@nongnu.org", "web_url": "", "scm_url": "", "webscm_url": "" }, "msgid": "<20260420201317.30199-1-junjie.cao@intel.com>", "date": "2026-04-20T20:13:14", "name": "[0/3] migration: switch remaining positioned I/O to _all helpers", "submitter": { "id": 91537, "url": "http://patchwork.ozlabs.org/api/1.1/people/91537/?format=api", "name": "Junjie Cao", "email": "junjie.cao@intel.com" }, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/cover/20260420201317.30199-1-junjie.cao@intel.com/mbox/", "series": [ { "id": 500601, "url": "http://patchwork.ozlabs.org/api/1.1/series/500601/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=500601", "date": "2026-04-20T20:13:15", "name": "migration: switch remaining positioned I/O to _all helpers", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/500601/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/covers/2225142/comments/", "headers": { "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=intel.com header.i=@intel.com header.a=rsa-sha256\n header.s=Intel header.b=c6nI2WYe;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; helo=lists1p.gnu.org;\n envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n receiver=patchwork.ozlabs.org)" ], "Received": [ "from lists1p.gnu.org (lists1p.gnu.org [209.51.188.17])\n\t(using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fzkqG00kbz1yGs\n\tfor <incoming@patchwork.ozlabs.org>; Mon, 20 Apr 2026 22:11:21 +1000 (AEST)", "from localhost ([::1] helo=lists1p.gnu.org)\n\tby lists1p.gnu.org with esmtp (Exim 4.90_1)\n\t(envelope-from <qemu-devel-bounces@nongnu.org>)\n\tid 1wEnSO-00069E-Dr; Mon, 20 Apr 2026 08:10:28 -0400", "from eggs.gnu.org ([2001:470:142:3::10])\n by lists1p.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1) (envelope-from <junjie.cao@intel.com>)\n id 1wEnSI-00065y-VU\n for qemu-devel@nongnu.org; Mon, 20 Apr 2026 08:10:25 -0400", "from mgamail.intel.com ([198.175.65.13])\n by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1) (envelope-from <junjie.cao@intel.com>)\n id 1wEnSE-0004LS-Te\n for qemu-devel@nongnu.org; Mon, 20 Apr 2026 08:10:22 -0400", "from orviesa003.jf.intel.com ([10.64.159.143])\n by orvoesa105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384;\n 20 Apr 2026 05:10:15 -0700", "from junjie-optiplex-micro-plus-7010.bj.intel.com ([10.238.152.98])\n by ORVIESA003-auth.jf.intel.com with\n ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Apr 2026 05:10:13 -0700" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple;\n d=intel.com; i=@intel.com; q=dns/txt; s=Intel;\n t=1776687020; x=1808223020;\n h=from:to:cc:subject:date:message-id:mime-version:\n content-transfer-encoding;\n bh=OlZhT4d147Vz4VQf3AFDJQdeb9CjW8ehhGdcHA16rqc=;\n b=c6nI2WYeFhZnwIyONLEDNFrfk51YviIYeC4OvwD9LMQmDOx+nhqMBpWB\n 1Ssp7n8PcO1vFELyu1w5BxSR0OFwJfnZzv3WGaxsoWwGV2U3WjsWlhamK\n rD91POnmUVEGAI78YEprRkaJXd/C/z5e2LdkHys/0EX3XW8PX2rEXURI4\n AuPtu7XagA0MbM8hymSPuLp21fD3UzNk/20hC1z/m5wtp80YzVAR2gRcc\n 7C8qUuCXH/YfKXxPO8VvwKujlV6YW/Ww/tHYf08hCyKwa7AYXfH4ePxZp\n MpYwb+ngTT0VaQJyDFo8o7WzPxs5gD5nVJNzyrASTJkmjxTOKl6HIajb2 w==;", "X-CSE-ConnectionGUID": [ "iNo+yxsFQ+mc0ZxPuIaZ0Q==", "T0bXxbg+RRuzQabSVoHaIw==" ], "X-CSE-MsgGUID": [ "bmSWiZsnTlyjaClLLcRhfA==", "sMOfYHiNShiDo1s1hzrnJw==" ], "X-IronPort-AV": [ "E=McAfee;i=\"6800,10657,11762\"; a=\"88674191\"", "E=Sophos;i=\"6.23,189,1770624000\"; d=\"scan'208\";a=\"88674191\"", "E=Sophos;i=\"6.23,189,1770624000\"; d=\"scan'208\";a=\"235708250\"" ], "X-ExtLoop1": "1", "From": "Junjie Cao <junjie.cao@intel.com>", "To": "qemu-devel@nongnu.org", "Cc": "peterx@redhat.com,\n\tfarosas@suse.de,\n\tjunjie.cao@intel.com", "Subject": "[PATCH 0/3] migration: switch remaining positioned I/O to _all\n helpers", "Date": "Tue, 21 Apr 2026 04:13:14 +0800", "Message-ID": "<20260420201317.30199-1-junjie.cao@intel.com>", "X-Mailer": "git-send-email 2.43.0", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Received-SPF": "pass client-ip=198.175.65.13;\n envelope-from=junjie.cao@intel.com;\n helo=mgamail.intel.com", "X-Spam_score_int": "-24", "X-Spam_score": "-2.5", "X-Spam_bar": "--", "X-Spam_report": "(-2.5 / 5.0 requ) BAYES_00=-1.9, DATE_IN_FUTURE_06_12=1.947,\n DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1,\n DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001,\n 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": "qemu development <qemu-devel.nongnu.org>", "List-Unsubscribe": "<https://lists.nongnu.org/mailman/options/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>", "List-Archive": "<https://lists.nongnu.org/archive/html/qemu-devel>", "List-Post": "<mailto:qemu-devel@nongnu.org>", "List-Help": "<mailto:qemu-devel-request@nongnu.org?subject=help>", "List-Subscribe": "<https://lists.nongnu.org/mailman/listinfo/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=subscribe>", "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org", "Sender": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org" }, "content": "Follow-up to the pread/pwrite_all API series [1].\n\nqemu_put_buffer_at(), qemu_get_buffer_at(), and file_write_ramblock_iov()\nall use single-shot positioned I/O without retry. They share the same\npattern as the bug fixed in multifd_file_recv_data() where a short\ntransfer would be mishandled.\n\nConvert them to the _all helpers and clean up a pre-existing\nconst-correctness issue in qemu_get_buffer_at() along the way.\n\nAfter this series no positioned I/O call site in migration/ uses raw\nsingle-shot channel operations.\n\nDepends-on: <20260413214549.926435-1-junjie.cao@intel.com>\n(\"io/channel: complete pread/pwrite_all API and fix\nmultifd_file_recv_data\")\n\n[1] https://lore.kernel.org/qemu-devel/20260413214549.926435-1-junjie.cao@intel.com/\n\nJunjie Cao (3):\n migration/qemu-file: switch buffer_at functions to positioned I/O _all\n helpers\n migration/file: switch file_write_ramblock_iov to pwritev_all\n migration/qemu-file: drop incorrect const from qemu_get_buffer_at buf\n\n migration/file.c | 8 ++++----\n migration/qemu-file.c | 37 ++++---------------------------------\n migration/qemu-file.h | 2 +-\n 3 files changed, 9 insertions(+), 38 deletions(-)" }