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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0C7C6E77183 for ; Wed, 18 Dec 2024 05:18:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=Q90jg2GcG7kkoOSKZ0PgHyORxJAhQFlbWWHphQB0sUk=; b=qn7MVNgy9BEdHmVkQPssAVX+1+ P8AucMeJyZQgBqdUNatiYUx3tjOdiWWh7ZLeEsLxTb798N1saDPxAQpTsKGHWjZZRJK0uY/wwK0oK QWHws5c32bj+ic7iaPeBKgAgnv7PGJ/Px7ieM/wt1Hw9z5UZBitpA1h4RtbOgD93pTbCmD0rIV9mv Dy+ouOMpQr0gqT9X60cEqq4Wxre3Xz7Zr6bPHpr3r0RfZ7+8eNb9Iqc/1q0gcKEoATu2WQT0N30Ki qAYufsh0qNAP7/z6rWkKVeXgWGc+W8nlkU2KuL1Oia1OJlFgfg0IzmQLUtwG4R69LQ3jyoWwCAgve /45/gq3Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tNmSF-0000000FcoE-0WoI; Wed, 18 Dec 2024 05:18:39 +0000 Received: from nyc.source.kernel.org ([147.75.193.91]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tNmNJ-0000000FcGW-3U6f for linux-um@lists.infradead.org; Wed, 18 Dec 2024 05:13:34 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id EA0CEA424FF; Wed, 18 Dec 2024 05:11:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2A4EBC4CED0; Wed, 18 Dec 2024 05:13:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1734498812; bh=VPTtFnOKIaVkSJH4d+mJXyyCMDm4PV2Y6+2mcEZO76E=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=P+EsTW84x8keIwUTvkRWbYosyLbTo2I6umG0mVCEyDCeegk2KQjQyHtZQ5oRJnCgC yNChtyIr674JyBKPoJLDWldDB/JdJIF8/xB47vAIPHom3J84T5GThkEvHsFZ4Hjypu 1VcI5yKbK2uR84tBs9yULm2AzxBuYopTCT5V6Bwp0yFQheF7v6iDaO7wkzApOXScgX tLgEDapvz5RnDH8MTiauHNSr5eqbVgxisHp1FGdWFzpOX5XUyBGrTC0Frrzt4g44FB PkcWEWKdmOeMWtY2aKQvIPl0j1H2btJPIHtSNdxp0QtQ7zDPizKXLPL0j4dcGXfaqG 76ewPadvNMJKQ== Date: Tue, 17 Dec 2024 21:13:29 -0800 From: Kees Cook To: Hajime Tazaki Cc: linux-um@lists.infradead.org, ricarkol@google.com, Liam.Howlett@oracle.com, Eric Biederman , Alexander Viro , Christian Brauner , Jan Kara , linux-mm@kvack.org, linux-fsdevel@vger.kernel.org Subject: Re: [PATCH v5 02/13] x86/um: nommu: elf loader for fdpic Message-ID: <202412172113.21E002F0@keescook> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241217_211333_931950_AF37F958 X-CRM114-Status: UNSURE ( 9.05 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-um@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-um" Errors-To: linux-um-bounces+linux-um=archiver.kernel.org@lists.infradead.org On Thu, Dec 12, 2024 at 07:12:09PM +0900, Hajime Tazaki wrote: > As UML supports CONFIG_MMU=n case, it has to use an alternate ELF > loader, FDPIC ELF loader. In this commit, we added necessary > definitions in the arch, as UML has not been used so far. It also > updates Kconfig file to use BINFMT_ELF_FDPIC under !MMU environment. > > Cc: Eric Biederman > Cc: Kees Cook > Cc: Alexander Viro > Cc: Christian Brauner > Cc: Jan Kara > Cc: linux-mm@kvack.org > Cc: linux-fsdevel@vger.kernel.org > Signed-off-by: Hajime Tazaki Acked-by: Kees Cook -- Kees Cook