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=-9.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 E7526C433ED for ; Wed, 19 May 2021 00:48:11 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6825B6112F for ; Wed, 19 May 2021 00:48:11 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6825B6112F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=desiato.20200630; h=Sender:Content-Transfer-Encoding :Content-Type:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:Mime-Version:References:In-Reply-To:Message-Id: Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=ja7fjSbWqtUc50FO6wVX2Fz5dmB6Fn5kEWVbzXPE8M4=; b=ao9zVJnBa9tXBye2xQq5EGANz c6fhj9NPHykE5hGUCpVhjtqb3AoIc7a0z1CXdzuhsoMbyT7mfvFUE3QYHF1sZ10/LIUn0ySin/Hbc tzHq7XZ3iFDw7N9+676D/lBrfeFQsDmqpuyCmaZqhwtPt3NpbKBidwSRKaYDNhKG+WrO96/7s7cym pXE1ZZhN0gJ2eYK3X9gbzDlrAuCW9E1QrVAmujuR9cnltBcwx64hIoAb168ETqaRvwicMM4H5OO9C 2bHjE6NXubbtLuUaftFj048oLa2QI1wro2A+HtWU/7Ajrt+FZ1S77MlJIDqaFnTzBKkJTYsWwnziN 0B9mvWsHw==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1ljAKA-002I0J-Ke; Wed, 19 May 2021 00:44:34 +0000 Received: from bombadil.infradead.org ([2607:7c80:54:e::133]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1ljAK5-002Hzs-8W; Wed, 19 May 2021 00:44:29 +0000 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:Mime-Version:References:In-Reply-To:Message-Id:Subject:Cc:To: From:Date:Sender:Reply-To:Content-ID:Content-Description; bh=CnLcMZgbcF5LBCEwpqjAmpGMq03y8rO+4/G+4msbyYQ=; b=0smD7IW6g6YH5ElvFys2P/EN/o 73C+r9erq1oespVf2CT4sTco6WEfZsiM9IQE6vmfrNvfUqeW49JOcZOsPQ+uEeyjKOrbpwD+JQmd7 diBoCyShJv9EcjziAQNvEAnRVfOpDu8tlng8zZE/AYYuii6xaQ1lIH1sSbKqkmF5P0Oh8xnAJ4yK0 9weOUAYwdf4qNrVpSBd4XgP1R3TqnWSqEl0frxAJ+KNpFxVmet90TaFUrV0naYGKBmTNz4BR/oRjE re7HqrGfA7pJfahnThA37xuBFig3m5F+Aa0q05G2T0dpFQySzRPvswnRAD4Qnxrzehn70Ut7gE/YV 9Ouj4mZw==; Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1ljAK1-00F3Fk-8B; Wed, 19 May 2021 00:44:27 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id 9D59F6135B; Wed, 19 May 2021 00:44:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1621385064; bh=TaIIw0YYtenqp7/hfp+Brr2pi7x+J7tKiTwiGcf4BXo=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=OWqlmtzTKs7bvcu6OsrPtdFoycSizT0julGnQ1nL89UDOP47oOx68Qc7/VuYXRLHl PNVwvj+VZTjuZY29zaA8iT4YqSTgqnpaEgh3VOC71g9NKcI8TaUUyHgG2IXdNHcZ/n vJFCM+BcjPVeDtUlkhRioxH5rtQ7jgaUQXdaR9z4= Date: Tue, 18 May 2021 17:44:22 -0700 From: Andrew Morton To: Mike Rapoport Cc: Alexander Viro , Andy Lutomirski , Arnd Bergmann , Borislav Petkov , Catalin Marinas , Christopher Lameter , Dan Williams , Dave Hansen , David Hildenbrand , Elena Reshetova , "H. Peter Anvin" , Hagen Paul Pfeifer , Ingo Molnar , James Bottomley , James Bottomley , Kees Cook , "Kirill A. Shutemov" , Matthew Wilcox , Matthew Garrett , Mark Rutland , Michal Hocko , Mike Rapoport , Michael Kerrisk , Palmer Dabbelt , Palmer Dabbelt , Paul Walmsley , Peter Zijlstra , "Rafael J. Wysocki" , Rick Edgecombe , Roman Gushchin , Shakeel Butt , Shuah Khan , Thomas Gleixner , Tycho Andersen , Will Deacon , Yury Norov , linux-api@vger.kernel.org, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-nvdimm@lists.01.org, linux-riscv@lists.infradead.org, x86@kernel.org Subject: Re: [PATCH v20 4/7] mm: introduce memfd_secret system call to create "secret" memory areas Message-Id: <20210518174422.399ad118a051fe4c5b11d7ba@linux-foundation.org> In-Reply-To: <20210518072034.31572-5-rppt@kernel.org> References: <20210518072034.31572-1-rppt@kernel.org> <20210518072034.31572-5-rppt@kernel.org> X-Mailer: Sylpheed 3.5.1 (GTK+ 2.24.31; x86_64-pc-linux-gnu) Mime-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210518_174425_351169_0D6A7B5A X-CRM114-Status: GOOD ( 14.79 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, 18 May 2021 10:20:31 +0300 Mike Rapoport wrote: > From: Mike Rapoport > > Introduce "memfd_secret" system call with the ability to create memory > areas visible only in the context of the owning process and not mapped not > only to other processes but in the kernel page tables as well. > > ... > > --- a/mm/Kconfig > +++ b/mm/Kconfig > @@ -901,4 +901,9 @@ config KMAP_LOCAL > # struct io_mapping based helper. Selected by drivers that need them > config IO_MAPPING > bool > + > +config SECRETMEM > + def_bool ARCH_HAS_SET_DIRECT_MAP && !EMBEDDED > + select STRICT_DEVMEM > + > endmenu WARNING: unmet direct dependencies detected for STRICT_DEVMEM Depends on [n]: MMU [=y] && DEVMEM [=n] && (ARCH_HAS_DEVMEM_IS_ALLOWED [=y] || GENERIC_LIB_DEVMEM_IS_ALLOWED [=n]) Selected by [y]: - SECRETMEM [=y] so I went back to the v19 version, with --- a/mm/Kconfig~mm-introduce-memfd_secret-system-call-to-create-secret-memory-areas-fix +++ a/mm/Kconfig @@ -907,6 +907,5 @@ config IO_MAPPING config SECRETMEM def_bool ARCH_HAS_SET_DIRECT_MAP && !EMBEDDED - select STRICT_DEVMEM endmenu _ _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel