From patchwork Tue Aug 20 10:37:39 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marc Zyngier X-Patchwork-Id: 13769909 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 5F34AC3DA4A for ; Tue, 20 Aug 2024 10:40:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=6fNDk+pez7SOPOuqS+JHWwo0Pkrdtem486ibBphiKjc=; b=VHdGqEsiAQnaB2DK8HkKG0u2Sg k8G+9ucChjkMHd5VeijbOCvv3YT8IIjmX+icIwfLnGrWMKAnDvWLkmIbRvOGBpxqkCrUCa4Bl/cte i+EhmOU9xCLRxpz1wYXFwdpiKZAwlPClCY2cr0Cf+BZy2x40V7CHl5racwyMR6KnL5oAp5k4h66yd ZxTL5vgPhcN9+0NZAAqXD0xe5IiEeGdIElJXZBcEkVz/TEV3R7t9XsTh4XZgI5eXc+sXZYhDWr0yF 1kX/U3MEFD/TkDUFB5jYiDnz2fcDo98kQKB6TGsiK7BucCNh3r5CYnFtj4oPGqcD/OPCD+milfWOG 0Ua/Ojdg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sgMHK-00000004qcx-3ZcR; Tue, 20 Aug 2024 10:39:54 +0000 Received: from sin.source.kernel.org ([2604:1380:40e1:4800::1]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sgMFb-00000004pus-1lSA for linux-arm-kernel@lists.infradead.org; Tue, 20 Aug 2024 10:38:10 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sin.source.kernel.org (Postfix) with ESMTP id B28A2CE09B8; Tue, 20 Aug 2024 10:38:05 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B2CB6C4AF09; Tue, 20 Aug 2024 10:38:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1724150284; bh=6AJ3yfD98r+FO9E5vQFX7wbiwlpQp9Jx1Chm1J9PyGU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GxqCrpu31vHyO8AjOkbjc2XIm4+75zmnLE/3d5HX9Znrxx57yA7372AYOBzMK0TEV 2MhTiQupMSmuzqSHHquza44lcDU4bWabJH4Q3BzSgx7j9OCgjTGTcPixtzlK64Ineg t+4w8v8g2jCxEuKiWcjzBzAytsuk7bgbsZof2Hjm5sBNlUF7AhC/BedohGPJimSvkD rjGzVx3WrDVdJBdX/k21sVTnE1PARuQTQt4oV4MI/iZ+VR4tYC1BrgxSchKs5AnaSs KDe9zM6qFYxCLqHAB2u9Awd/fdvI6vl2ANb2jCAy7HftNrF1e5Svzpho4pkIgG6dfP LT5VqbRWKuefQ== Received: from sofa.misterjones.org ([185.219.108.64] helo=valley-girl.lan) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1sgMFW-005Ea3-Tr; Tue, 20 Aug 2024 11:38:02 +0100 From: Marc Zyngier To: kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org Cc: James Morse , Suzuki K Poulose , Oliver Upton , Zenghui Yu , Joey Gouly , Alexandru Elisei , Anshuman Khandual , Przemyslaw Gaj Subject: [PATCH v4 01/18] arm64: Add missing APTable and TCR_ELx.HPD masks Date: Tue, 20 Aug 2024 11:37:39 +0100 Message-Id: <20240820103756.3545976-2-maz@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240820103756.3545976-1-maz@kernel.org> References: <20240820103756.3545976-1-maz@kernel.org> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org, james.morse@arm.com, suzuki.poulose@arm.com, oliver.upton@linux.dev, yuzenghui@huawei.com, joey.gouly@arm.com, alexandru.elisei@arm.com, anshuman.khandual@arm.com, pgaj@cadence.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240820_033807_881465_C29EB67A X-CRM114-Status: GOOD ( 11.82 ) 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Although Linux doesn't make use of hierarchical permissions (TFFT!), KVM needs to know where the various bits related to this feature live in the TCR_ELx registers as well as in the page tables. Add the missing bits. Signed-off-by: Marc Zyngier --- arch/arm64/include/asm/kvm_arm.h | 1 + arch/arm64/include/asm/pgtable-hwdef.h | 9 +++++++++ 2 files changed, 10 insertions(+) diff --git a/arch/arm64/include/asm/kvm_arm.h b/arch/arm64/include/asm/kvm_arm.h index d81cc746e0eb..109a85ee6910 100644 --- a/arch/arm64/include/asm/kvm_arm.h +++ b/arch/arm64/include/asm/kvm_arm.h @@ -107,6 +107,7 @@ /* TCR_EL2 Registers bits */ #define TCR_EL2_DS (1UL << 32) #define TCR_EL2_RES1 ((1U << 31) | (1 << 23)) +#define TCR_EL2_HPD (1 << 24) #define TCR_EL2_TBI (1 << 20) #define TCR_EL2_PS_SHIFT 16 #define TCR_EL2_PS_MASK (7 << TCR_EL2_PS_SHIFT) diff --git a/arch/arm64/include/asm/pgtable-hwdef.h b/arch/arm64/include/asm/pgtable-hwdef.h index 1f60aa1bc750..07dfbdb14bab 100644 --- a/arch/arm64/include/asm/pgtable-hwdef.h +++ b/arch/arm64/include/asm/pgtable-hwdef.h @@ -204,6 +204,11 @@ */ #define PTE_S2_MEMATTR(t) (_AT(pteval_t, (t)) << 2) +/* + * Hierarchical permission for Stage-1 tables + */ +#define S1_TABLE_AP (_AT(pmdval_t, 3) << 61) + /* * Highest possible physical address supported. */ @@ -298,6 +303,10 @@ #define TCR_TBI1 (UL(1) << 38) #define TCR_HA (UL(1) << 39) #define TCR_HD (UL(1) << 40) +#define TCR_HPD0_SHIFT 41 +#define TCR_HPD0 (UL(1) << TCR_HPD0_SHIFT) +#define TCR_HPD1_SHIFT 42 +#define TCR_HPD1 (UL(1) << TCR_HPD1_SHIFT) #define TCR_TBID0 (UL(1) << 51) #define TCR_TBID1 (UL(1) << 52) #define TCR_NFD0 (UL(1) << 53)