From patchwork Wed Jul 14 02:21:25 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anshuman Khandual X-Patchwork-Id: 12375615 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=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 70F07C07E95 for ; Wed, 14 Jul 2021 02:21:22 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 2766261279 for ; Wed, 14 Jul 2021 02:21:22 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2766261279 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 69A906B0096; Tue, 13 Jul 2021 22:21:22 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 671076B0098; Tue, 13 Jul 2021 22:21:22 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 561406B0099; Tue, 13 Jul 2021 22:21:22 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0211.hostedemail.com [216.40.44.211]) by kanga.kvack.org (Postfix) with ESMTP id 2FD076B0096 for ; Tue, 13 Jul 2021 22:21:22 -0400 (EDT) Received: from smtpin06.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 29CD01857900D for ; Wed, 14 Jul 2021 02:21:21 +0000 (UTC) X-FDA: 78359591562.06.3505AD2 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by imf25.hostedemail.com (Postfix) with ESMTP id C6BF8B00008E for ; Wed, 14 Jul 2021 02:21:20 +0000 (UTC) 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 4F7F21FB; Tue, 13 Jul 2021 19:21:20 -0700 (PDT) Received: from p8cg001049571a15.arm.com (unknown [10.163.65.222]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id E19BE3F7D8; Tue, 13 Jul 2021 19:21:16 -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 04/10] arm64/mm: Add FEAT_LPA2 specific ID_AA64MMFR0.TGRAN[2] Date: Wed, 14 Jul 2021 07:51:25 +0530 Message-Id: <1626229291-6569-5-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> X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: C6BF8B00008E X-Stat-Signature: 4a6k1ynkrzr4xpnpfm87hzqbyq8t63z6 Authentication-Results: imf25.hostedemail.com; dkim=none; dmarc=pass (policy=none) header.from=arm.com; spf=pass (imf25.hostedemail.com: domain of anshuman.khandual@arm.com designates 217.140.110.172 as permitted sender) smtp.mailfrom=anshuman.khandual@arm.com X-HE-Tag: 1626229280-228193 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: PAGE_SIZE support is tested against possible minimum and maximum values for its respective ID_AA64MMFR0.TGRAN field, depending on whether it is signed or unsigned. But then FEAT_LPA2 implementation needs to be validated for 4K and 16K page sizes via feature specific ID_AA64MMFR0.TGRAN values. Hence it adds FEAT_LPA2 specific ID_AA64MMFR0.TGRAN[2] values per ARM ARM (0487G.A). Signed-off-by: Anshuman Khandual --- arch/arm64/include/asm/sysreg.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h index 5cbfaf6..deecde0 100644 --- a/arch/arm64/include/asm/sysreg.h +++ b/arch/arm64/include/asm/sysreg.h @@ -849,16 +849,19 @@ #define ID_AA64MMFR0_TGRAN4_NI 0xf #define ID_AA64MMFR0_TGRAN4_SUPPORTED 0x0 +#define ID_AA64MMFR0_TGRAN4_LPA2 0x1 #define ID_AA64MMFR0_TGRAN64_NI 0xf #define ID_AA64MMFR0_TGRAN64_SUPPORTED 0x0 #define ID_AA64MMFR0_TGRAN16_NI 0x0 #define ID_AA64MMFR0_TGRAN16_SUPPORTED 0x1 +#define ID_AA64MMFR0_TGRAN16_LPA2 0x2 #define ID_AA64MMFR0_PARANGE_48 0x5 #define ID_AA64MMFR0_PARANGE_52 0x6 #define ID_AA64MMFR0_TGRAN_2_SUPPORTED_DEFAULT 0x0 #define ID_AA64MMFR0_TGRAN_2_SUPPORTED_NONE 0x1 #define ID_AA64MMFR0_TGRAN_2_SUPPORTED_MIN 0x2 +#define ID_AA64MMFR0_TGRAN_2_SUPPORTED_LPA2 0x3 #define ID_AA64MMFR0_TGRAN_2_SUPPORTED_MAX 0x7 #ifdef CONFIG_ARM64_PA_BITS_52 @@ -1030,10 +1033,12 @@ #define ID_AA64MMFR0_TGRAN_SHIFT ID_AA64MMFR0_TGRAN4_SHIFT #define ID_AA64MMFR0_TGRAN_SUPPORTED_MIN ID_AA64MMFR0_TGRAN4_SUPPORTED #define ID_AA64MMFR0_TGRAN_SUPPORTED_MAX 0x7 +#define ID_AA64MMFR0_TGRAN_LPA2 ID_AA64MMFR0_TGRAN4_LPA2 #elif defined(CONFIG_ARM64_16K_PAGES) #define ID_AA64MMFR0_TGRAN_SHIFT ID_AA64MMFR0_TGRAN16_SHIFT #define ID_AA64MMFR0_TGRAN_SUPPORTED_MIN ID_AA64MMFR0_TGRAN16_SUPPORTED #define ID_AA64MMFR0_TGRAN_SUPPORTED_MAX 0xF +#define ID_AA64MMFR0_TGRAN_LPA2 ID_AA64MMFR0_TGRAN16_LPA2 #elif defined(CONFIG_ARM64_64K_PAGES) #define ID_AA64MMFR0_TGRAN_SHIFT ID_AA64MMFR0_TGRAN64_SHIFT #define ID_AA64MMFR0_TGRAN_SUPPORTED_MIN ID_AA64MMFR0_TGRAN64_SUPPORTED