From patchwork Thu Aug 22 15:10:56 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joey Gouly X-Patchwork-Id: 1975606 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org (client-ip=2404:9400:2:0:216:3eff:fee1:b9f1; helo=lists.ozlabs.org; envelope-from=linuxppc-dev+bounces-375-incoming=patchwork.ozlabs.org@lists.ozlabs.org; receiver=patchwork.ozlabs.org) Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2404:9400:2:0:216:3eff:fee1:b9f1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4WqRYW1wTmz1yXY for ; Fri, 23 Aug 2024 01:13:51 +1000 (AEST) Received: from boromir.ozlabs.org (localhost [127.0.0.1]) by lists.ozlabs.org (Postfix) with ESMTP id 4WqRXM3MZZz2yxM; Fri, 23 Aug 2024 01:12:51 +1000 (AEST) X-Original-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; arc=none smtp.remote-ip=217.140.110.172 ARC-Seal: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1724339571; cv=none; b=ojoBFSTOauOai9fjDYM0XukzWAH8PiMmu/JFifnq6ri1TcREnDLsbU023sHje365wHaqwkuHptXDIxaT2mqkFTmBhyGxITjCQV1xZwWb9ScYJ7h3l3Vftf5n2dY0/bJ4oltnZOcTbQY9mPPZpqcLuCOVLFOpMUGqIL83td93qvQxHDGvDQ+tZtiBFl3BtFjk++bfxHl0HspONv13kzZxmWxfD6gp+h3hpw0ecwiTRPrDQgBrKVN2h2Wo6Tux+w/u9+sWE3Imq/g4HJp5o0T1hGEVYvITV4bU1uj/XbYf8S9iMk4wDJQlE4ReKZeN4JsUil+mwTYd+go67YWPXpZAPw== ARC-Message-Signature: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1724339571; c=relaxed/relaxed; bh=R8bZ0HCDMB4Ng+fG0OFOyHWUGs8nbmuYuMVfMre2cG4=; h=Received:Received:From:To:Cc:Subject:Date:Message-Id:X-Mailer: In-Reply-To:References:MIME-Version:Content-Transfer-Encoding; b=O3OJtF5AGSc7V1TfabNxfZEs2Ruf2Jet/kV6D8NNnJFXWXKO/LuklF6a76GcLuLkyTUpTy6fts+QHVoWfPa++prkvRaonPaCLg1jdx+NcWzV768UDq1/jiSSpWyCQZSeOw5j8fV0w3I18dr92XUex+ytucYKubpvNjNR4KIWaYdnQmuYAm7PdHBBOpfqbunGOOKjMuLAcacAD+nlnVNkx/XkrVnr0Ho8LWLuimemnMhzwKRjZXuN+znzPWM6EADLs0rWmhSF82XShM8j0Zcm3Buk/sGQnblydaxxUamxqXv47zGaf5ohmFJfNXiS1RUz/P55SbAdjGCfHnbEa8GPKQ== ARC-Authentication-Results: i=1; lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass (client-ip=217.140.110.172; helo=foss.arm.com; envelope-from=joey.gouly@arm.com; receiver=lists.ozlabs.org) smtp.mailfrom=arm.com Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=arm.com (client-ip=217.140.110.172; helo=foss.arm.com; envelope-from=joey.gouly@arm.com; receiver=lists.ozlabs.org) Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lists.ozlabs.org (Postfix) with ESMTP id 4WqRXM1qMDz2ygZ for ; Fri, 23 Aug 2024 01:12:51 +1000 (AEST) 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 830E21596; Thu, 22 Aug 2024 08:12:46 -0700 (PDT) Received: from e124191.cambridge.arm.com (e124191.cambridge.arm.com [10.1.197.45]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 64D793F58B; Thu, 22 Aug 2024 08:12:16 -0700 (PDT) From: Joey Gouly To: linux-arm-kernel@lists.infradead.org Cc: nd@arm.com, akpm@linux-foundation.org, aneesh.kumar@kernel.org, aneesh.kumar@linux.ibm.com, anshuman.khandual@arm.com, bp@alien8.de, broonie@kernel.org, catalin.marinas@arm.com, christophe.leroy@csgroup.eu, dave.hansen@linux.intel.com, hpa@zytor.com, joey.gouly@arm.com, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, maz@kernel.org, mingo@redhat.com, mpe@ellerman.id.au, naveen.n.rao@linux.ibm.com, npiggin@gmail.com, oliver.upton@linux.dev, shuah@kernel.org, skhan@linuxfoundation.org, szabolcs.nagy@arm.com, tglx@linutronix.de, will@kernel.org, x86@kernel.org, kvmarm@lists.linux.dev, linux-kselftest@vger.kernel.org Subject: [PATCH v5 13/30] arm64: add POIndex defines Date: Thu, 22 Aug 2024 16:10:56 +0100 Message-Id: <20240822151113.1479789-14-joey.gouly@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240822151113.1479789-1-joey.gouly@arm.com> References: <20240822151113.1479789-1-joey.gouly@arm.com> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Post: List-Subscribe: , , List-Unsubscribe: MIME-Version: 1.0 The 3-bit POIndex is stored in the PTE at bits 60..62. Signed-off-by: Joey Gouly Cc: Catalin Marinas Cc: Will Deacon Acked-by: Catalin Marinas --- arch/arm64/include/asm/pgtable-hwdef.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git arch/arm64/include/asm/pgtable-hwdef.h arch/arm64/include/asm/pgtable-hwdef.h index 1f60aa1bc750..3f0c3f5c5cef 100644 --- arch/arm64/include/asm/pgtable-hwdef.h +++ arch/arm64/include/asm/pgtable-hwdef.h @@ -199,6 +199,16 @@ #define PTE_PI_IDX_2 53 /* PXN */ #define PTE_PI_IDX_3 54 /* UXN */ +/* + * POIndex[2:0] encoding (Permission Overlay Extension) + */ +#define PTE_PO_IDX_0 (_AT(pteval_t, 1) << 60) +#define PTE_PO_IDX_1 (_AT(pteval_t, 1) << 61) +#define PTE_PO_IDX_2 (_AT(pteval_t, 1) << 62) + +#define PTE_PO_IDX_MASK GENMASK_ULL(62, 60) + + /* * Memory Attribute override for Stage-2 (MemAttr[3:0]) */