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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 DB402C432C3 for ; Sat, 16 Nov 2019 15:46:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B13CC20833 for ; Sat, 16 Nov 2019 15:46:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573919162; bh=BGVEmFHLvjGZOll6shoHOgq10KG5rn1aBv9tgolO9tc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=te2O4IK3t16xTGWd3T+pii+9sEqIZ98Q/8eNSOHAluq9J+OUZtYYzWMTQ6O46+J3N lGG9EvGBV4jSESMZ6BMOg9HzHlryBOF8Zb+T6IPmOmszyNcTpIwCl9mob6WIC4YGrK /Ki5IT7RY4KjjKhgmKe/l6kBe7Ud3LIc8r45/bfM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728527AbfKPPqB (ORCPT ); Sat, 16 Nov 2019 10:46:01 -0500 Received: from mail.kernel.org ([198.145.29.99]:51806 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729234AbfKPPpw (ORCPT ); Sat, 16 Nov 2019 10:45:52 -0500 Received: from sasha-vm.mshome.net (unknown [50.234.116.4]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id AA33D207DD; Sat, 16 Nov 2019 15:45:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573919152; bh=BGVEmFHLvjGZOll6shoHOgq10KG5rn1aBv9tgolO9tc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MGOA/4up7q0CK/2gMhWeliF4QoKGK6pJK+zA0cnC92/mOSnujLQ1gyU2/HWaSod4C U2EKR5W/y4hhaWvXv3OtSi/+OUCe/3MoWvYGb+Fp+kfBmtgh9kA27fcRO38msRKaZj w7Io/TGawz/1JgnjcGifHCudmUo/JpYunKcGpP7Y= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: David Hildenbrand , Pavel Tatashin , Rashmica Gupta , Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Balbir Singh , Michael Neuling , Boris Ostrovsky , Dan Williams , Greg Kroah-Hartman , Haiyang Zhang , Heiko Carstens , John Allen , Jonathan Corbet , Joonsoo Kim , Juergen Gross , Kate Stewart , "K. Y. Srinivasan" , Len Brown , Martin Schwidefsky , Mathieu Malaterre , Michal Hocko , Nathan Fontenot , Oscar Salvador , Philippe Ombredanne , "Rafael J . Wysocki" , "Rafael J. Wysocki" , Stephen Hemminger , Thomas Gleixner , Vlastimil Babka , YASUAKI ISHIMATSU , Andrew Morton , Linus Torvalds , Sasha Levin , linuxppc-dev@lists.ozlabs.org Subject: [PATCH AUTOSEL 4.19 165/237] powerpc/powernv: hold device_hotplug_lock when calling device_online() Date: Sat, 16 Nov 2019 10:40:00 -0500 Message-Id: <20191116154113.7417-165-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191116154113.7417-1-sashal@kernel.org> References: <20191116154113.7417-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: David Hildenbrand [ Upstream commit cec1680591d6d5b10ecc10f370210089416e98af ] device_online() should be called with device_hotplug_lock() held. Link: http://lkml.kernel.org/r/20180925091457.28651-5-david@redhat.com Signed-off-by: David Hildenbrand Reviewed-by: Pavel Tatashin Reviewed-by: Rashmica Gupta Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Michael Ellerman Cc: Rashmica Gupta Cc: Balbir Singh Cc: Michael Neuling Cc: Boris Ostrovsky Cc: Dan Williams Cc: Greg Kroah-Hartman Cc: Haiyang Zhang Cc: Heiko Carstens Cc: John Allen Cc: Jonathan Corbet Cc: Joonsoo Kim Cc: Juergen Gross Cc: Kate Stewart Cc: "K. Y. Srinivasan" Cc: Len Brown Cc: Martin Schwidefsky Cc: Mathieu Malaterre Cc: Michal Hocko Cc: Nathan Fontenot Cc: Oscar Salvador Cc: Philippe Ombredanne Cc: Rafael J. Wysocki Cc: "Rafael J. Wysocki" Cc: Stephen Hemminger Cc: Thomas Gleixner Cc: Vlastimil Babka Cc: YASUAKI ISHIMATSU Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Sasha Levin --- arch/powerpc/platforms/powernv/memtrace.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/powerpc/platforms/powernv/memtrace.c b/arch/powerpc/platforms/powernv/memtrace.c index 232bf5987f91d..dd3cc4632b9ae 100644 --- a/arch/powerpc/platforms/powernv/memtrace.c +++ b/arch/powerpc/platforms/powernv/memtrace.c @@ -244,9 +244,11 @@ static int memtrace_online(void) * we need to online the memory ourselves. */ if (!memhp_auto_online) { + lock_device_hotplug(); walk_memory_range(PFN_DOWN(ent->start), PFN_UP(ent->start + ent->size - 1), NULL, online_mem_block); + unlock_device_hotplug(); } /* -- 2.20.1