From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3F225C11F66 for ; Wed, 14 Jul 2021 02:21:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 21962611C0 for ; Wed, 14 Jul 2021 02:21:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237644AbhGNCYf (ORCPT ); Tue, 13 Jul 2021 22:24:35 -0400 Received: from foss.arm.com ([217.140.110.172]:55852 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237634AbhGNCYe (ORCPT ); Tue, 13 Jul 2021 22:24:34 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id B41121FB; Tue, 13 Jul 2021 19:21:43 -0700 (PDT) Received: from p8cg001049571a15.arm.com (unknown [10.163.65.222]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 400623F7D8; Tue, 13 Jul 2021 19:21:40 -0700 (PDT) From: Anshuman Khandual To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: akpm@linux-foundation.org, suzuki.poulose@arm.com, mark.rutland@arm.com, will@kernel.org, catalin.marinas@arm.com, maz@kernel.org, james.morse@arm.com, steven.price@arm.com, Anshuman Khandual Subject: [RFC 10/10] arm64/mm: Enable CONFIG_ARM64_PA_BITS_52 on CONFIG_ARM64_[4K|16K]_PAGES Date: Wed, 14 Jul 2021 07:51:31 +0530 Message-Id: <1626229291-6569-11-git-send-email-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1626229291-6569-1-git-send-email-anshuman.khandual@arm.com> References: <1626229291-6569-1-git-send-email-anshuman.khandual@arm.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org All required FEAT_LPA2 components for 52 bit PA range are already in place. Just enable CONFIG_ARM64_PA_BITS_52 on 4K and 16K pages which would select CONFIG_ARM64_PA_BITS_52_LPA2 activating 52 bit PA range via FEAT_LPA2. Signed-off-by: Anshuman Khandual --- arch/arm64/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 658a6fd..bc7e5c6 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -952,9 +952,9 @@ config ARM64_PA_BITS_48 config ARM64_PA_BITS_52 bool "52-bit (ARMv8.2)" - depends on ARM64_64K_PAGES depends on ARM64_PAN || !ARM64_SW_TTBR0_PAN select ARM64_PA_BITS_52_LPA if ARM64_64K_PAGES + select ARM64_PA_BITS_52_LPA2 if (ARM64_4K_PAGES || ARM64_16K_PAGES) help Enable support for a 52-bit physical address space, introduced as part of the ARMv8.2-LPA extension. -- 2.7.4