From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qk0-f198.google.com (mail-qk0-f198.google.com [209.85.220.198]) by kanga.kvack.org (Postfix) with ESMTP id 924F36B0007 for ; Wed, 21 Feb 2018 18:53:04 -0500 (EST) Received: by mail-qk0-f198.google.com with SMTP id c135so2590227qkb.10 for ; Wed, 21 Feb 2018 15:53:04 -0800 (PST) Received: from mail-sor-f65.google.com (mail-sor-f65.google.com. [209.85.220.65]) by mx.google.com with SMTPS id s11sor87646qtn.102.2018.02.21.15.53.03 for (Google Transport Security); Wed, 21 Feb 2018 15:53:03 -0800 (PST) From: Ram Pai Subject: [PATCH v12 0/3] mm, x86, powerpc: Enhancements to Memory Protection Keys. Date: Wed, 21 Feb 2018 15:52:15 -0800 Message-Id: <1519257138-23797-1-git-send-email-linuxram@us.ibm.com> Sender: owner-linux-mm@kvack.org List-ID: To: mpe@ellerman.id.au, mingo@redhat.com, akpm@linux-foundation.org Cc: linuxppc-dev@lists.ozlabs.org, linux-mm@kvack.org, x86@kernel.org, linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, dave.hansen@intel.com, 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, linuxram@us.ibm.com, corbet@lwn.net, arnd@arndb.de, fweimer@redhat.com, msuchanek@suse.com This patch series provides arch-neutral enhancements to enable memory-keys on new architecutes, and the corresponding changes in x86 and powerpc specific code to support that. a) Provides ability to support upto 32 keys. PowerPC can handle 32 keys and hence needs this. b) Arch-neutral code; and not the arch-specific code, determines the format of the string, that displays the key for each vma in smaps. History: ------- version v12: (1) fixed compilation errors seen with various x86 configs. version v11: (1) code that displays key in smaps is not any more defined under CONFIG_ARCH_HAS_PKEYS. - Comment by Eric W. Biederman and Michal Hocko (2) merged two patches that implemented (1). - comment by Michal Hocko version prior to v11: (1) used one additional bit from VM_HIGH_ARCH_* to support 32 keys. - Suggestion by Dave Hansen. (2) powerpc specific changes to support memory keys. Ram Pai (3): mm, powerpc, x86: define VM_PKEY_BITx bits if CONFIG_ARCH_HAS_PKEYS is enabled mm, powerpc, x86: introduce an additional vma bit for powerpc pkey mm, x86, powerpc: display pkey in smaps only if arch supports pkeys arch/powerpc/include/asm/mmu_context.h | 5 ----- arch/x86/include/asm/mmu_context.h | 5 ----- arch/x86/include/asm/pkeys.h | 1 + arch/x86/kernel/fpu/xstate.c | 5 +++++ arch/x86/kernel/setup.c | 8 -------- fs/proc/task_mmu.c | 15 ++++++++------- include/linux/mm.h | 12 +++++++----- include/linux/pkeys.h | 7 ++++++- 8 files changed, 27 insertions(+), 31 deletions(-) -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org