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, 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 607F4C352A1 for ; Wed, 5 Feb 2020 18:21:38 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 2433721741 for ; Wed, 5 Feb 2020 18:21:38 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2433721741 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 08A9B6B0087; Wed, 5 Feb 2020 13:20:38 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id CE6986B0082; Wed, 5 Feb 2020 13:20:37 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id B326C6B0088; Wed, 5 Feb 2020 13:20:37 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0207.hostedemail.com [216.40.44.207]) by kanga.kvack.org (Postfix) with ESMTP id 79F846B0082 for ; Wed, 5 Feb 2020 13:20:37 -0500 (EST) Received: from smtpin21.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 1DB981EFF for ; Wed, 5 Feb 2020 18:20:37 +0000 (UTC) X-FDA: 76456888914.21.bikes52_79bab6e2ec43f X-HE-Tag: bikes52_79bab6e2ec43f X-Filterd-Recvd-Size: 3203 Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by imf09.hostedemail.com (Postfix) with ESMTP for ; Wed, 5 Feb 2020 18:20:36 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 05 Feb 2020 10:20:30 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,406,1574150400"; d="scan'208";a="279447855" Received: from yyu32-desk.sc.intel.com ([143.183.136.146]) by FMSMGA003.fm.intel.com with ESMTP; 05 Feb 2020 10:20:30 -0800 From: Yu-cheng Yu To: x86@kernel.org, "H. Peter Anvin" , Thomas Gleixner , Ingo Molnar , linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-api@vger.kernel.org, Arnd Bergmann , Andy Lutomirski , Balbir Singh , Borislav Petkov , Cyrill Gorcunov , Dave Hansen , Eugene Syromiatnikov , Florian Weimer , "H.J. Lu" , Jann Horn , Jonathan Corbet , Kees Cook , Mike Kravetz , Nadav Amit , Oleg Nesterov , Pavel Machek , Peter Zijlstra , Randy Dunlap , "Ravi V. Shankar" , Vedvyas Shanbhogue , Dave Martin , x86-patch-review@intel.com Cc: Yu-cheng Yu Subject: [RFC PATCH v9 26/27] mm/mmap: Add Shadow Stack pages to memory accounting Date: Wed, 5 Feb 2020 10:19:34 -0800 Message-Id: <20200205181935.3712-27-yu-cheng.yu@intel.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20200205181935.3712-1-yu-cheng.yu@intel.com> References: <20200205181935.3712-1-yu-cheng.yu@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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 Shadow Stack pages to memory accounting. v8: - Change Shadow Stake pages from data_vm to stack_vm. Signed-off-by: Yu-cheng Yu --- mm/mmap.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/mm/mmap.c b/mm/mmap.c index 71e4ffc83bcd..acfa04e2a5dd 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -1687,6 +1687,9 @@ static inline int accountable_mapping(struct file *= file, vm_flags_t vm_flags) if (file && is_file_hugepages(file)) return 0; =20 + if (arch_copy_pte_mapping(vm_flags)) + return 1; + return (vm_flags & (VM_NORESERVE | VM_SHARED | VM_WRITE)) =3D=3D VM_WRI= TE; } =20 @@ -3302,6 +3305,8 @@ void vm_stat_account(struct mm_struct *mm, vm_flags= _t flags, long npages) mm->stack_vm +=3D npages; else if (is_data_mapping(flags)) mm->data_vm +=3D npages; + else if (arch_copy_pte_mapping(flags)) + mm->stack_vm +=3D npages; } =20 static vm_fault_t special_mapping_fault(struct vm_fault *vmf); --=20 2.21.0