From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pg0-x242.google.com (mail-pg0-x242.google.com [IPv6:2607:f8b0:400e:c05::242]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3wxkMW1p1QzDr3D for ; Tue, 27 Jun 2017 21:33:43 +1000 (AEST) Received: by mail-pg0-x242.google.com with SMTP id f127so3987292pgc.2 for ; Tue, 27 Jun 2017 04:33:43 -0700 (PDT) Message-ID: <1498563169.7935.16.camel@gmail.com> Subject: Re: [RFC v4 02/17] mm: ability to disable execute permission on a key at creation From: Balbir Singh To: Ram Pai , linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, linux-mm@kvack.org, x86@kernel.org, linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org Cc: benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au, khandual@linux.vnet.ibm.com, aneesh.kumar@linux.vnet.ibm.com, dave.hansen@intel.com, hbabu@us.ibm.com, arnd@arndb.de, akpm@linux-foundation.org, corbet@lwn.net, mingo@redhat.com Date: Tue, 27 Jun 2017 21:32:49 +1000 In-Reply-To: <1498558319-32466-3-git-send-email-linuxram@us.ibm.com> References: <1498558319-32466-1-git-send-email-linuxram@us.ibm.com> <1498558319-32466-3-git-send-email-linuxram@us.ibm.com> Content-Type: text/plain; charset="UTF-8" Mime-Version: 1.0 List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Tue, 2017-06-27 at 03:11 -0700, Ram Pai wrote: > Currently sys_pkey_create() provides the ability to disable read > and write permission on the key, at creation. powerpc has the > hardware support to disable execute on a pkey as well.This patch > enhances the interface to let disable execute at key creation > time. x86 does not allow this. Hence the next patch will add > ability in x86 to return error if PKEY_DISABLE_EXECUTE is > specified. > > Signed-off-by: Ram Pai > --- Acked-by: Balbir Singh