From patchwork Mon Jul 6 01:19:45 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Justin He X-Patchwork-Id: 11644805 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 83D0C618 for ; Mon, 6 Jul 2020 01:21:35 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 5A5132070C for ; Mon, 6 Jul 2020 01:21:35 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="0AcCOnS8" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5A5132070C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:MIME-Version:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:References:In-Reply-To:Message-Id:Date:Subject:To: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=P5rDj5OTwnZEfi1qXxFu7Kr1lwZ+Znx3WC+BPtrP5n8=; b=0AcCOnS8QyS0v3jRxNLhf6mOiJ uyDZKE2rtAnzDDmADc6gSWKjS1ylsq49aTe1V3AL8cwleleDI8KBpE7SP2MPYBnQRzFyidLYS+t1v RnXEDneYu6/G7n3ZR6n7GAmCFKyplxJiCZfdT74AaRHeGLzHN9gBSTlTxIY2zCNoIfAylBmod/08X BkLHO1T8Si7nBZ5VMklyfMvT7aZzfkAGDLQW4n/elLlCgbJJpOSH2N4LH0N0aUWoIYu/9VYjMPPZA X/mt+j9JX1tc17Y3ws7EwqzRohcfu8oNj2TY2Ua01OYu36TOay1Ojal722MYGPMfWn4pSb0G72tjP +49xSUjQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jsFnv-0001Zf-Qi; Mon, 06 Jul 2020 01:20:19 +0000 Received: from foss.arm.com ([217.140.110.172]) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jsFnq-0001XA-AU for linux-arm-kernel@lists.infradead.org; Mon, 06 Jul 2020 01:20:15 +0000 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 76057C0A; Sun, 5 Jul 2020 18:20:07 -0700 (PDT) Received: from localhost.localdomain (entos-thunderx2-02.shanghai.arm.com [10.169.212.213]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 111313F718; Sun, 5 Jul 2020 18:20:03 -0700 (PDT) From: Jia He To: Catalin Marinas , Will Deacon Subject: [PATCH 1/3] arm64/numa: set numa_off to false when numa node is fake Date: Mon, 6 Jul 2020 09:19:45 +0800 Message-Id: <20200706011947.184166-2-justin.he@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200706011947.184166-1-justin.he@arm.com> References: <20200706011947.184166-1-justin.he@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200705_212014_423992_8F716C57 X-CRM114-Status: GOOD ( 12.66 ) X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [217.140.110.172 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jia He , Baoquan He , Kaly Xin , Chuhong Yuan , linux-kernel@vger.kernel.org, Mike Rapoport , linux-mm@kvack.org, Andrew Morton , linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Previously, numa_off is set to true unconditionally in dummy_numa_init(), even if there is a fake numa node. But acpi will translate node id to NUMA_NO_NODE(-1) in acpi_map_pxm_to_node() because it regards numa_off as turning off the numa node. Without this patch, pmem can't be probed as a RAM device on arm64 if SRAT table isn't present. $ndctl create-namespace -fe namespace0.0 --mode=devdax --map=dev -s 1g -a 64K kmem dax0.0: rejecting DAX region [mem 0x240400000-0x2bfffffff] with invalid node: -1 kmem: probe of dax0.0 failed with error -22 This fixes it by setting numa_off to false. Signed-off-by: Jia He --- arch/arm64/mm/numa.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/arm64/mm/numa.c b/arch/arm64/mm/numa.c index aafcee3e3f7e..7689986020d9 100644 --- a/arch/arm64/mm/numa.c +++ b/arch/arm64/mm/numa.c @@ -440,7 +440,8 @@ static int __init dummy_numa_init(void) return ret; } - numa_off = true; + /* force numa_off to be false since we have a fake numa node here */ + numa_off = false; return 0; }