From mboxrd@z Thu Jan 1 00:00:00 1970 From: Laura Abbott Subject: [RFC 1/3] arm: Add definitions for pte_mkexec/pte_mknexec Date: Wed, 12 Jun 2013 10:23:28 -0700 Message-ID: <1371057810-3189-2-git-send-email-lauraa@codeaurora.org> References: <1371057810-3189-1-git-send-email-lauraa@codeaurora.org> Return-path: Received: from smtp.codeaurora.org ([198.145.11.231]:44123 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755392Ab3FLRXj (ORCPT ); Wed, 12 Jun 2013 13:23:39 -0400 In-Reply-To: <1371057810-3189-1-git-send-email-lauraa@codeaurora.org> Sender: linux-arm-msm-owner@vger.kernel.org List-Id: linux-arm-msm@vger.kernel.org To: linux-arm-kernel@lists.infradead.org, Russell King Cc: Will Deacon , Catalin Marinas , Nicoas Pitre , linux-arm-msm@vger.kernel.org, Laura Abbott Other architectures define pte_mkexec to mark a pte as executable. Add pte_mkexec for ARM to get the same functionality. Although no other architectures currently define it, also add pte_mknexec to explicitly allow a pte to be marked as non executable. Signed-off-by: Laura Abbott --- arch/arm/include/asm/pgtable.h | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/arch/arm/include/asm/pgtable.h b/arch/arm/include/asm/pgtable.h index 9bcd262..135381b 100644 --- a/arch/arm/include/asm/pgtable.h +++ b/arch/arm/include/asm/pgtable.h @@ -251,6 +251,8 @@ PTE_BIT_FUNC(mkclean, &= ~L_PTE_DIRTY); PTE_BIT_FUNC(mkdirty, |= L_PTE_DIRTY); PTE_BIT_FUNC(mkold, &= ~L_PTE_YOUNG); PTE_BIT_FUNC(mkyoung, |= L_PTE_YOUNG); +PTE_BIT_FUNC(mkexec, &= ~L_PTE_XN); +PTE_BIT_FUNC(mknexec, |= L_PTE_XN); static inline pte_t pte_mkspecial(pte_t pte) { return pte; } -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, hosted by The Linux Foundation