From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754862Ab3KGRSI (ORCPT ); Thu, 7 Nov 2013 12:18:08 -0500 Received: from mail-we0-f178.google.com ([74.125.82.178]:65286 "EHLO mail-we0-f178.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754201Ab3KGRRu (ORCPT ); Thu, 7 Nov 2013 12:17:50 -0500 From: Ard Biesheuvel To: x86@kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: gregkh@linuxfoundation.org, catalin.marinas@arm.com, will.deacon@arm.com, tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com, steve.capper@linaro.org, Ard Biesheuvel Subject: [RFC PATCH 4/4] arm64: advertise CPU features using module aliases Date: Thu, 7 Nov 2013 18:17:37 +0100 Message-Id: <1383844657-17487-5-git-send-email-ard.biesheuvel@linaro.org> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1383844657-17487-1-git-send-email-ard.biesheuvel@linaro.org> References: <1383844657-17487-1-git-send-email-ard.biesheuvel@linaro.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This enables the generic implementation in drivers/base/cpu.c that allows modules to be loaded automatically based on the optional features supported (and advertised) by the CPU. Signed-off-by: Ard Biesheuvel --- arch/arm64/Kconfig | 3 +++ arch/arm64/kernel/setup.c | 2 ++ 2 files changed, 5 insertions(+) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index c044548..50cd97f 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -202,6 +202,9 @@ config ARCH_WANT_HUGE_PMD_SHARE config HAVE_ARCH_TRANSPARENT_HUGEPAGE def_bool y +config ARCH_HAS_CPU_AUTOPROBE + def_bool y + source "mm/Kconfig" config XEN_DOM0 diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c index 780a7aa..90d5277 100644 --- a/arch/arm64/kernel/setup.c +++ b/arch/arm64/kernel/setup.c @@ -403,3 +403,5 @@ const struct seq_operations cpuinfo_op = { .stop = c_stop, .show = c_show }; + +extern u32 cpu_features __attribute__((alias("elf_hwcap"))); -- 1.8.3.2