From patchwork Mon Jul 26 06:37:19 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anshuman Khandual X-Patchwork-Id: 12398581 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=-17.5 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_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 2901CC4338F for ; Mon, 26 Jul 2021 06:54:03 +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 EB6DB6023B for ; Mon, 26 Jul 2021 06:54:02 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org EB6DB6023B 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:MIME-Version:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=xHFo+S1OB9c25ORiiNwo/DHICSOobqJiesm1Sz9gPz4=; b=Kgi8XOxd1yiD0Q r7JH2LDgR5G/qGWYmXsHpRS9qZaNsIcU7qzCuihza2J03avzfLRNSwlMDlHE3Px9W+oUP5h1jKLlE Wl8r3MLgczftayeWIMe9a9kuryQ8kst4kIwwdNmlOzhn+3P24T4FhxX9q8KU0FXNGVG0vZBDS69VS 0eTeuPI1olRjamU7XBtdYahHGzCtD1p0PCGEfnWN7zoAwwVuWztDloUcSDb5qy2UpAynruBNmDz20 Riw9KvgB8kSMKqX/TqrT6eY3E/eCxd3wA0XG2ENB+auC6pRcb0D5fRkewJJbSI0/6i0oi3VLoEDE9 1LmWcTCx3dPLYILTtSjA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1m7uFJ-009ilL-QU; Mon, 26 Jul 2021 06:37:50 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1m7uEd-009iYR-N0 for linux-arm-kernel@lists.infradead.org; Mon, 26 Jul 2021 06:37:09 +0000 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 79DC5139F; Sun, 25 Jul 2021 23:37:06 -0700 (PDT) Received: from p8cg001049571a15.arm.com (unknown [10.163.66.17]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 7630F3F66F; Sun, 25 Jul 2021 23:37:02 -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 V2 04/10] arm64/mm: Add FEAT_LPA2 specific ID_AA64MMFR0.TGRAN[2] Date: Mon, 26 Jul 2021 12:07:19 +0530 Message-Id: <1627281445-12445-5-git-send-email-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1627281445-12445-1-git-send-email-anshuman.khandual@arm.com> References: <1627281445-12445-1-git-send-email-anshuman.khandual@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210725_233707_839002_E03403FB X-CRM114-Status: UNSURE ( 7.95 ) X-CRM114-Notice: Please train this message. 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: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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 Acked-by: Catalin Marinas --- 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