From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dave Hansen Subject: Re: [PATCH] x86, powerpc : pkey-mprotect must allow pkey-0 Date: Wed, 14 Mar 2018 07:08:29 -0700 Message-ID: References: <1520583161-11741-1-git-send-email-linuxram@us.ibm.com> <20180309200017.GR1060@ram.oc3035372033.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org To: Florian Weimer , Ram Pai Cc: mpe@ellerman.id.au, mingo@redhat.com, akpm@linux-foundation.org, linuxppc-dev@lists.ozlabs.org, linux-mm@kvack.org, x86@kernel.org, linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, benh@kernel.crashing.org, paulus@samba.org, khandual@linux.vnet.ibm.com, aneesh.kumar@linux.vnet.ibm.com, bsingharora@gmail.com, hbabu@us.ibm.com, mhocko@kernel.org, bauerman@linux.vnet.ibm.com, ebiederm@xmission.com, corbet@lwn.net, arnd@arndb.de, msuchanek@suse.com, Ulrich.Weigand@de.ibm.com List-Id: linux-arch.vger.kernel.org On 03/14/2018 01:00 AM, Florian Weimer wrote: > ... but not the key which is used for PROT_EXEC emulation, which is still > reserved The PROT_EXEC key is dynamically allocated. There is no "the key". From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga05.intel.com ([192.55.52.43]:14171 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751366AbeCNOIc (ORCPT ); Wed, 14 Mar 2018 10:08:32 -0400 Subject: Re: [PATCH] x86, powerpc : pkey-mprotect must allow pkey-0 References: <1520583161-11741-1-git-send-email-linuxram@us.ibm.com> <20180309200017.GR1060@ram.oc3035372033.ibm.com> From: Dave Hansen Message-ID: Date: Wed, 14 Mar 2018 07:08:29 -0700 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-arch-owner@vger.kernel.org List-ID: To: Florian Weimer , Ram Pai Cc: mpe@ellerman.id.au, mingo@redhat.com, akpm@linux-foundation.org, linuxppc-dev@lists.ozlabs.org, linux-mm@kvack.org, x86@kernel.org, linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, benh@kernel.crashing.org, paulus@samba.org, khandual@linux.vnet.ibm.com, aneesh.kumar@linux.vnet.ibm.com, bsingharora@gmail.com, hbabu@us.ibm.com, mhocko@kernel.org, bauerman@linux.vnet.ibm.com, ebiederm@xmission.com, corbet@lwn.net, arnd@arndb.de, msuchanek@suse.com, Ulrich.Weigand@de.ibm.com Message-ID: <20180314140829.ldCNh-p70pAkVHw4jQ6TYF0Z9xnmyRiWKD0mpKDDdI4@z> On 03/14/2018 01:00 AM, Florian Weimer wrote: > ... but not the key which is used for PROT_EXEC emulation, which is still > reserved The PROT_EXEC key is dynamically allocated. There is no "the key".