From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932947AbeEHPAF (ORCPT ); Tue, 8 May 2018 11:00:05 -0400 Received: from ozlabs.org ([203.11.71.1]:35025 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932861AbeEHPAB (ORCPT ); Tue, 8 May 2018 11:00:01 -0400 From: Michael Ellerman To: linuxram@us.ibm.com Cc: mingo@redhat.com, linuxppc-dev@ozlabs.org, linux-mm@kvack.org, x86@kernel.org, linux-kernel@vger.kernel.org, dave.hansen@intel.com Subject: [PATCH 6/8] x86/pkeys: Add arch_pkeys_enabled() Date: Wed, 9 May 2018 00:59:46 +1000 Message-Id: <20180508145948.9492-7-mpe@ellerman.id.au> X-Mailer: git-send-email 2.14.1 In-Reply-To: <20180508145948.9492-1-mpe@ellerman.id.au> References: <20180508145948.9492-1-mpe@ellerman.id.au> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This will be used in future patches to check for arch support for pkeys in generic code. Signed-off-by: Michael Ellerman --- arch/x86/include/asm/pkeys.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/x86/include/asm/pkeys.h b/arch/x86/include/asm/pkeys.h index 0e5f749158e4..c1957f8f7c1b 100644 --- a/arch/x86/include/asm/pkeys.h +++ b/arch/x86/include/asm/pkeys.h @@ -7,6 +7,11 @@ extern int arch_set_user_pkey_access(struct task_struct *tsk, int pkey, unsigned long init_val); +static inline bool arch_pkeys_enabled(void) +{ + return boot_cpu_has(X86_FEATURE_OSPKE); +} + /* * Try to dedicate one of the protection keys to be used as an * execute-only protection key. -- 2.14.1