From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933595AbbAGCqp (ORCPT ); Tue, 6 Jan 2015 21:46:45 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:46775 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932515AbbAGCHf (ORCPT ); Tue, 6 Jan 2015 21:07:35 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Catalin Marinas , Will Deacon Subject: [PATCH 3.14 21/52] arm64: Add COMPAT_HWCAP_LPAE Date: Tue, 6 Jan 2015 18:06:49 -0800 Message-Id: <20150107020558.559588127@linuxfoundation.org> X-Mailer: git-send-email 2.2.1 In-Reply-To: <20150107020555.043793795@linuxfoundation.org> References: <20150107020555.043793795@linuxfoundation.org> User-Agent: quilt/0.63-1 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Catalin Marinas commit 7d57511d2dba03a8046c8b428dd9192a4bfc1e73 upstream. Commit a469abd0f868 (ARM: elf: add new hwcap for identifying atomic ldrd/strd instructions) introduces HWCAP_ELF for 32-bit ARM applications. As LPAE is always present on arm64, report the corresponding compat HWCAP to user space. Signed-off-by: Catalin Marinas Signed-off-by: Will Deacon Signed-off-by: Greg Kroah-Hartman --- arch/arm64/include/asm/hwcap.h | 1 + arch/arm64/kernel/setup.c | 3 ++- 2 files changed, 3 insertions(+), 1 deletion(-) --- a/arch/arm64/include/asm/hwcap.h +++ b/arch/arm64/include/asm/hwcap.h @@ -30,6 +30,7 @@ #define COMPAT_HWCAP_IDIVA (1 << 17) #define COMPAT_HWCAP_IDIVT (1 << 18) #define COMPAT_HWCAP_IDIV (COMPAT_HWCAP_IDIVA|COMPAT_HWCAP_IDIVT) +#define COMPAT_HWCAP_LPAE (1 << 20) #define COMPAT_HWCAP_EVTSTRM (1 << 21) #ifndef __ASSEMBLY__ --- a/arch/arm64/kernel/setup.c +++ b/arch/arm64/kernel/setup.c @@ -67,7 +67,8 @@ EXPORT_SYMBOL_GPL(elf_hwcap); COMPAT_HWCAP_FAST_MULT|COMPAT_HWCAP_EDSP|\ COMPAT_HWCAP_TLS|COMPAT_HWCAP_VFP|\ COMPAT_HWCAP_VFPv3|COMPAT_HWCAP_VFPv4|\ - COMPAT_HWCAP_NEON|COMPAT_HWCAP_IDIV) + COMPAT_HWCAP_NEON|COMPAT_HWCAP_IDIV|\ + COMPAT_HWCAP_LPAE) unsigned int compat_elf_hwcap __read_mostly = COMPAT_ELF_HWCAP_DEFAULT; #endif