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=-15.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=unavailable 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 B421AC432BE for ; Thu, 5 Aug 2021 17:23:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 96C8660F42 for ; Thu, 5 Aug 2021 17:23:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239710AbhHERXm (ORCPT ); Thu, 5 Aug 2021 13:23:42 -0400 Received: from mail.kernel.org ([198.145.29.99]:50862 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230172AbhHERXj (ORCPT ); Thu, 5 Aug 2021 13:23:39 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id E770661104; Thu, 5 Aug 2021 17:23:22 +0000 (UTC) Date: Thu, 5 Aug 2021 18:23:15 +0100 From: Catalin Marinas To: Anshuman Khandual Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, akpm@linux-foundation.org, suzuki.poulose@arm.com, mark.rutland@arm.com, will@kernel.org, maz@kernel.org, james.morse@arm.com, steven.price@arm.com Subject: Re: [RFC V2 10/10] arm64/mm: Enable CONFIG_ARM64_PA_BITS_52 on CONFIG_ARM64_[4K|16K]_PAGES Message-ID: <20210805172314.GF6719@arm.com> References: <1627281445-12445-1-git-send-email-anshuman.khandual@arm.com> <1627281445-12445-11-git-send-email-anshuman.khandual@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1627281445-12445-11-git-send-email-anshuman.khandual@arm.com> User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jul 26, 2021 at 12:07:25PM +0530, Anshuman Khandual wrote: > 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 1999ac6..ce139415 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. If you do it this way, the text here needs updating and the 8.2 architecture version removed. -- Catalin 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=-15.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 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 C3890C4338F for ; Thu, 5 Aug 2021 17:25:03 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 93AC160F42 for ; Thu, 5 Aug 2021 17:25:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 93AC160F42 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=5qU2o+a3o+nwczHdOvF8P/Yh7gv21faOHjWxKwMfHNo=; b=JtHuxOklo8rH51 4cb4Ptm+AF+VLTgGpPBxMRMTZV0H1kJ/LfpUAnSWZMmXmbgivigZulnHWZpkbCNm4A6uQbEQTxmfl N78BFXM0FvV23dBHig7HbXro+y4x16fEVIftOAwfXCK2bKCSwYOuOvTkDofGIOeOrxGe8v+/y0YZj TrM+F1SzgGium3VOv/jxdVgqwcdHupRal3pQf8Gi/lNO78ggIu2QMT7dYQL5/tEtjxITLfLuG4Wz5 3VzFUp2cCtfzFokL9zbYCZJv6LbgWb7dzG93JeXnxd6esx3+XYgFbLGGhMJOG1NdRt6v7h8yYop1j SgCyAMZ0rtCtosIVFkEQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mBh5c-00APNl-C6; Thu, 05 Aug 2021 17:23:28 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mBh5Z-00APN0-4v for linux-arm-kernel@lists.infradead.org; Thu, 05 Aug 2021 17:23:26 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id E770661104; Thu, 5 Aug 2021 17:23:22 +0000 (UTC) Date: Thu, 5 Aug 2021 18:23:15 +0100 From: Catalin Marinas To: Anshuman Khandual Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, akpm@linux-foundation.org, suzuki.poulose@arm.com, mark.rutland@arm.com, will@kernel.org, maz@kernel.org, james.morse@arm.com, steven.price@arm.com Subject: Re: [RFC V2 10/10] arm64/mm: Enable CONFIG_ARM64_PA_BITS_52 on CONFIG_ARM64_[4K|16K]_PAGES Message-ID: <20210805172314.GF6719@arm.com> References: <1627281445-12445-1-git-send-email-anshuman.khandual@arm.com> <1627281445-12445-11-git-send-email-anshuman.khandual@arm.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1627281445-12445-11-git-send-email-anshuman.khandual@arm.com> User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210805_102325_253222_10471AD5 X-CRM114-Status: GOOD ( 16.88 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, Jul 26, 2021 at 12:07:25PM +0530, Anshuman Khandual wrote: > 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 1999ac6..ce139415 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. If you do it this way, the text here needs updating and the 8.2 architecture version removed. -- Catalin _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel