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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT 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 A18C5C3A59C for ; Fri, 16 Aug 2019 11:18:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7A7572133F for ; Fri, 16 Aug 2019 11:18:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727210AbfHPLS6 (ORCPT ); Fri, 16 Aug 2019 07:18:58 -0400 Received: from foss.arm.com ([217.140.110.172]:55206 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727021AbfHPLS5 (ORCPT ); Fri, 16 Aug 2019 07:18:57 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id C706C360; Fri, 16 Aug 2019 04:18:56 -0700 (PDT) Received: from localhost.localdomain (unknown [10.169.40.54]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 09FE13F706; Fri, 16 Aug 2019 04:18:54 -0700 (PDT) From: Jia He To: Dan Williams , Vishal Verma Cc: Keith Busch , Dave Jiang , linux-nvdimm@lists.01.org, linux-kernel@vger.kernel.org, Jia He Subject: [PATCH 1/2] drivers/dax/kmem: use default numa_mem_id if target_node is invalid Date: Fri, 16 Aug 2019 19:18:43 +0800 Message-Id: <20190816111844.87442-2-justin.he@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190816111844.87442-1-justin.he@arm.com> References: <20190816111844.87442-1-justin.he@arm.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org In some platforms(e.g arm64 guest), the NFIT info might not be ready. Then target_node might be -1. But if there is a default numa_mem_id(), we can use it to avoid unnecessary fatal EINVL error. devm_memremap_pages() also uses this logic if nid is invalid, we can keep the same page with it. Signed-off-by: Jia He --- drivers/dax/kmem.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/dax/kmem.c b/drivers/dax/kmem.c index a02318c6d28a..ad62d551d94e 100644 --- a/drivers/dax/kmem.c +++ b/drivers/dax/kmem.c @@ -33,9 +33,9 @@ int dev_dax_kmem_probe(struct device *dev) */ numa_node = dev_dax->target_node; if (numa_node < 0) { - dev_warn(dev, "rejecting DAX region %pR with invalid node: %d\n", - res, numa_node); - return -EINVAL; + dev_warn(dev, "DAX %pR with invalid node, assume it as %d\n", + res, numa_node, numa_mem_id()); + numa_node = numa_mem_id(); } /* Hotplug starting at the beginning of the next block: */ -- 2.17.1