Received: by 2002:a25:8b91:0:0:0:0:0 with SMTP id j17csp1867954ybl; Sat, 25 Jan 2020 10:29:46 -0800 (PST) X-Google-Smtp-Source: APXvYqznW2oZmOr1rVo80AZvacjTYSCRj4PiP9CfIj9aNh7NwGhs3CTOiFytFLWm16hOSVasFqoj X-Received: by 2002:aca:b187:: with SMTP id a129mr3122063oif.175.1579976986654; Sat, 25 Jan 2020 10:29:46 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1579976986; cv=none; d=google.com; s=arc-20160816; b=MPwkuKeHooE4bsFvMHGM1rtgkRzkX7lXmmpVIFE2L4k+MWwIyJtiK7wybHMV03xgHy VyL3qcCCk9r72o5Qw4GGNRkgzVJ0IMKtEzWrNMluoYV5Q81LCWaw8uo7XOOFg3nTscBL s+OhS9SmCh3ICA/vW50CNqWgR5dnLkL0xjwXk9FKMo5rkr8DHN+C4bNvZuoKiTEIuRPp SLpipzTixITkekRqXC294jKsZQyK8YqhGRpSK9uoXWwcDq1zZCROsWoi49+XNO9ExAeO HlKS/j3pE2Xo7dl3ieq1OrUJhttfPQxNT0EwTxIxJfpa4PPlqsE5wigGb5WjOFrhJdPu M95A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:references:in-reply-to:message-id:date :subject:cc:to:from; bh=+bTNNalnTYQiH26ymdCddRF5vjVeFewuQYZCuIXq0Y4=; b=eI8rbW0A5Oz/tZmGwNPaZyaGLG4WfYLdas8wFsyGQWS4h1JzvMmwVi+UaOpC2U1Ylx yUk1AR0bbQo7KNqXzPAHncWAp2AYV1NEdV6nF/VhJYfrxulSgZHSncx2NZHWRRgqri1X AxEcBV3JUZJyRmc1jvE7wvkCAdyIinqnNWIBVZPonIa06nVw1M4xQU0d4sz4KcWlLnxr vr7Qe0YlI9XfTHLvLu+vQ9X7bSz6RYRvsJh2RAq+/LLgvzHcp7BhvLc/xl43iDzazOjr 9/9U7j2yEGYaabQpDhZSjybMhy4zCaJgwM12a/HFjTHesOARyHxiXXTIAptKilFAsDAr /77g== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id 2si1332881ois.221.2020.01.25.10.29.22; Sat, 25 Jan 2020 10:29:46 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726565AbgAYS1f (ORCPT + 99 others); Sat, 25 Jan 2020 13:27:35 -0500 Received: from mga12.intel.com ([192.55.52.136]:36187 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726300AbgAYS1f (ORCPT ); Sat, 25 Jan 2020 13:27:35 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga106.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 25 Jan 2020 10:27:34 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,362,1574150400"; d="scan'208";a="221349268" Received: from jacob-builder.jf.intel.com ([10.7.199.155]) by orsmga008.jf.intel.com with ESMTP; 25 Jan 2020 10:27:34 -0800 From: Jacob Pan To: LKML Cc: Thomas Gleixner , Evan Green Subject: [PATCH v2] PCI/MSI: Avoid torn updates to MSI pairs Date: Sat, 25 Jan 2020 10:32:46 -0800 Message-Id: <1579977166-63618-1-git-send-email-jacob.jun.pan@linux.intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <20200117162444.v2.1.I9c7e72144ef639cc135ea33ef332852a6b33730f@changeid> References: <20200117162444.v2.1.I9c7e72144ef639cc135ea33ef332852a6b33730f@changeid> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org It seems we could avoid force_retrigger once IR is turned on. I have tried this patch with IR turned on, still seeing force_retrigger=1 for MSIs w/o masking.