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=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 3111BC32750 for ; Fri, 2 Aug 2019 13:28:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0850C21850 for ; Fri, 2 Aug 2019 13:28:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1564752537; bh=qD1Cf1RyAvRY3AfTwAdmi1AeAOtTl35E8NOucC5EsQs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=q4XyrK378mevnFnbf4QGZQ7DSOSVOoQw0ZPaqsBSZWZShtyHgB0ahXp43HldxlujA 2P6UsSFufrmpIv0ATHuY9LLMXHia7ygbxaTnqcbwG/FlqgewqjzsOu0aOICGc1GzLX se8ypAZkIaQdrZd2cM5FncjOBZqwX46uurd7mP1s= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2394869AbfHBN24 (ORCPT ); Fri, 2 Aug 2019 09:28:56 -0400 Received: from mail.kernel.org ([198.145.29.99]:36752 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2394465AbfHBN0D (ORCPT ); Fri, 2 Aug 2019 09:26:03 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (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 065CB2182B; Fri, 2 Aug 2019 13:26:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1564752362; bh=qD1Cf1RyAvRY3AfTwAdmi1AeAOtTl35E8NOucC5EsQs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=CggUjK2ITJgvoqet3UJcXeSKyvqb6d/PrL3n3PDxzN/Yww9hdNJ5pSLBUhSRs3v6K YwlWhSQ5uCc9u+iSPZpnW//LLoehit+WG1PK6hDNGhxersDJqLEeFTeQ8aKsq4IRHJ gmHH10ecKCHy2yrLZpE4EHDJ/VE0AkwkFnwCJs3Y= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Joerg Roedel , Thomas Gleixner , Dave Hansen , Sasha Levin Subject: [PATCH AUTOSEL 4.9 05/22] x86/mm: Check for pfn instead of page in vmalloc_sync_one() Date: Fri, 2 Aug 2019 09:25:29 -0400 Message-Id: <20190802132547.14517-5-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190802132547.14517-1-sashal@kernel.org> References: <20190802132547.14517-1-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: Joerg Roedel [ Upstream commit 51b75b5b563a2637f9d8dc5bd02a31b2ff9e5ea0 ] Do not require a struct page for the mapped memory location because it might not exist. This can happen when an ioremapped region is mapped with 2MB pages. Fixes: 5d72b4fba40ef ('x86, mm: support huge I/O mapping capability I/F') Signed-off-by: Joerg Roedel Signed-off-by: Thomas Gleixner Reviewed-by: Dave Hansen Link: https://lkml.kernel.org/r/20190719184652.11391-2-joro@8bytes.org Signed-off-by: Sasha Levin --- arch/x86/mm/fault.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c index c140198d9fa5e..2870424bda1ff 100644 --- a/arch/x86/mm/fault.c +++ b/arch/x86/mm/fault.c @@ -279,7 +279,7 @@ static inline pmd_t *vmalloc_sync_one(pgd_t *pgd, unsigned long address) if (!pmd_present(*pmd)) set_pmd(pmd, *pmd_k); else - BUG_ON(pmd_page(*pmd) != pmd_page(*pmd_k)); + BUG_ON(pmd_pfn(*pmd) != pmd_pfn(*pmd_k)); return pmd_k; } -- 2.20.1