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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id F1139CDB483 for ; Tue, 17 Oct 2023 15:46:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344176AbjJQPqV (ORCPT ); Tue, 17 Oct 2023 11:46:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32996 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235111AbjJQPp7 (ORCPT ); Tue, 17 Oct 2023 11:45:59 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C952A19B; Tue, 17 Oct 2023 08:45:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Sender:Reply-To:Content-ID:Content-Description; bh=HqpYto28NsMabgIUb0zwF/UIwjSPedBpjPncERhM0sc=; b=OiWj523wh1qqOURtI8D0fP9yhq BpKtVJH7f5xAmh2kV4g4NT4z4JCMxhFGYGPOrZCkl4DqWtTsCqR2kAJKLehXRyjoJy8IBgRrRJNEh 8NrJ34NME2vvCbPyOhJfxLbveH0Nxa9Vokt6hgrKueEQQ3VqlTDXoHQ4nvsG1nhBM1rxXqRLHPiQB ZJ6LG7BelIHi3Fd0NmRghWkmDZR2/bHfaZ+7B/ddgE/8+nXlP3aL+OWbawfYnKCqgSTyy7mbP4CMk LBoMUXzHKzYsa4du5552XOyNkQ/99AV1qORCdGhqM1+87tmw7wkoXKQV8Qmx2GFCNOM4J8KfFinUY RYs6oXpA==; Received: from [50.53.46.231] (helo=[192.168.254.15]) by bombadil.infradead.org with esmtpsa (Exim 4.96 #2 (Red Hat Linux)) id 1qsmGI-00Cm99-1U; Tue, 17 Oct 2023 15:45:38 +0000 Message-ID: Date: Tue, 17 Oct 2023 08:45:36 -0700 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC PATCH v2 1/8] mseal: Add mseal(2) syscall. Content-Language: en-US To: jeffxu@chromium.org, akpm@linux-foundation.org, keescook@chromium.org, jannh@google.com, sroettger@google.com, willy@infradead.org, gregkh@linuxfoundation.org, torvalds@linux-foundation.org Cc: jeffxu@google.com, jorgelo@chromium.org, groeck@chromium.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org, surenb@google.com, alex.sierra@amd.com, apopple@nvidia.com, aneesh.kumar@linux.ibm.com, axelrasmussen@google.com, ben@decadent.org.uk, catalin.marinas@arm.com, david@redhat.com, dwmw@amazon.co.uk, ying.huang@intel.com, hughd@google.com, joey.gouly@arm.com, corbet@lwn.net, wangkefeng.wang@huawei.com, Liam.Howlett@oracle.com, lstoakes@gmail.com, mawupeng1@huawei.com, linmiaohe@huawei.com, namit@vmware.com, peterx@redhat.com, peterz@infradead.org, ryan.roberts@arm.com, shr@devkernel.io, vbabka@suse.cz, xiujianfeng@huawei.com, yu.ma@intel.com, zhangpeng362@huawei.com, dave.hansen@intel.com, luto@kernel.org, linux-hardening@vger.kernel.org References: <20231017090815.1067790-1-jeffxu@chromium.org> <20231017090815.1067790-2-jeffxu@chromium.org> From: Randy Dunlap In-Reply-To: <20231017090815.1067790-2-jeffxu@chromium.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org nit: On 10/17/23 02:08, jeffxu@chromium.org wrote: | diff --git a/mm/Kconfig b/mm/Kconfig | index 264a2df5ecf5..db8a567cb4d3 100644 | --- a/mm/Kconfig | +++ b/mm/Kconfig | @@ -1258,6 +1258,14 @@ config LOCK_MM_AND_FIND_VMA | bool | depends on !STACK_GROWSUP | | +config MSEAL | + default n | + bool "Enable mseal() system call" | + depends on MMU | + help | + Enable the mseal() system call. Make memory areas's metadata immutable areas' $search_engine is your friend. | + by selected system calls, i.e. mprotect(), munmap(), mremap(), mmap(). -- ~Randy