From patchwork Fri Apr 16 15:41:00 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "kirill.shutemov@linux.intel.com" X-Patchwork-Id: 12208035 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=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 74C29C433ED for ; Fri, 16 Apr 2021 15:41:58 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 17ED36137D for ; Fri, 16 Apr 2021 15:41:58 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 17ED36137D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 99ED9900006; Fri, 16 Apr 2021 11:41:46 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 929498D0002; Fri, 16 Apr 2021 11:41:46 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 77CFA900006; Fri, 16 Apr 2021 11:41:46 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0005.hostedemail.com [216.40.44.5]) by kanga.kvack.org (Postfix) with ESMTP id 584DE8D0002 for ; Fri, 16 Apr 2021 11:41:46 -0400 (EDT) Received: from smtpin15.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 1DB1C5923C1C for ; Fri, 16 Apr 2021 15:41:46 +0000 (UTC) X-FDA: 78038645412.15.96CE007 Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by imf30.hostedemail.com (Postfix) with ESMTP id AFC53E000113 for ; Fri, 16 Apr 2021 15:41:33 +0000 (UTC) IronPort-SDR: h5HLg/sJc9mY4QJsgm9dQu+Kk08d1Qw5k/xT6CiW2Z1d31OtEMi5bEonwVO8+cfFRKq0tE156Q cMWiA75Kyv+A== X-IronPort-AV: E=McAfee;i="6200,9189,9956"; a="215592504" X-IronPort-AV: E=Sophos;i="5.82,226,1613462400"; d="scan'208";a="215592504" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Apr 2021 08:41:43 -0700 IronPort-SDR: lGuaSt9Jbppuno2GL+IX51ChFHPEI5DU+6ronyLCHnvyol9GOMLKa/g0sci/4syDwSpPwbuOAE o2DRvdX+WXuw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.82,226,1613462400"; d="scan'208";a="422038783" Received: from black.fi.intel.com ([10.237.72.28]) by orsmga007.jf.intel.com with ESMTP; 16 Apr 2021 08:41:38 -0700 Received: by black.fi.intel.com (Postfix, from userid 1000) id 144FD2BE; Fri, 16 Apr 2021 18:41:50 +0300 (EEST) From: "Kirill A. Shutemov" To: Dave Hansen , Andy Lutomirski , Peter Zijlstra , Sean Christopherson , Jim Mattson Cc: David Rientjes , "Edgecombe, Rick P" , "Kleen, Andi" , "Yamahata, Isaku" , Erdem Aktas , Steve Rutherford , Peter Gonda , David Hildenbrand , x86@kernel.org, kvm@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, "Kirill A. Shutemov" Subject: [RFCv2 07/13] mm: Add hwpoison_entry_to_pfn() and hwpoison_entry_to_page() Date: Fri, 16 Apr 2021 18:41:00 +0300 Message-Id: <20210416154106.23721-8-kirill.shutemov@linux.intel.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210416154106.23721-1-kirill.shutemov@linux.intel.com> References: <20210416154106.23721-1-kirill.shutemov@linux.intel.com> MIME-Version: 1.0 X-Rspamd-Queue-Id: AFC53E000113 X-Stat-Signature: nmaoxd3s8xg6ryxnoegyfn7t8npjq4gr X-Rspamd-Server: rspam02 Received-SPF: none (linux.intel.com>: No applicable sender policy available) receiver=imf30; identity=mailfrom; envelope-from=""; helo=mga01.intel.com; client-ip=192.55.52.88 X-HE-DKIM-Result: none/none X-HE-Tag: 1618587693-147576 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Add helpers to convert hwpoison swap entry to pfn and page. Signed-off-by: Kirill A. Shutemov --- include/linux/swapops.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/include/linux/swapops.h b/include/linux/swapops.h index d9b7c9132c2f..520589b12fb3 100644 --- a/include/linux/swapops.h +++ b/include/linux/swapops.h @@ -323,6 +323,16 @@ static inline int is_hwpoison_entry(swp_entry_t entry) return swp_type(entry) == SWP_HWPOISON; } +static inline unsigned long hwpoison_entry_to_pfn(swp_entry_t entry) +{ + return swp_offset(entry); +} + +static inline struct page *hwpoison_entry_to_page(swp_entry_t entry) +{ + return pfn_to_page(hwpoison_entry_to_pfn(entry)); +} + static inline void num_poisoned_pages_inc(void) { atomic_long_inc(&num_poisoned_pages); @@ -345,6 +355,16 @@ static inline int is_hwpoison_entry(swp_entry_t swp) return 0; } +static inline unsigned long hwpoison_entry_to_pfn(swp_entry_t entry) +{ + return 0; +} + +static inline struct page *hwpoison_entry_to_page(swp_entry_t entry) +{ + return NULL; +} + static inline void num_poisoned_pages_inc(void) { }