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=-3.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=no 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 5366FC2D0DB for ; Sat, 25 Jan 2020 18:27:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 301292071A for ; Sat, 25 Jan 2020 18:27:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726690AbgAYS1f (ORCPT ); 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.