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helo=lists.xenproject.org; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C From: Ayan Kumar Halder To: CC: , , , , , Ayan Kumar Halder Subject: [XEN v2 08/11] xen/arm: guest_walk: LPAE specific bits should be enclosed within "ifndef CONFIG_ARM_PA_32" Date: Tue, 17 Jan 2023 17:43:55 +0000 Message-ID: <20230117174358.15344-9-ayan.kumar.halder@amd.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230117174358.15344-1-ayan.kumar.halder@amd.com> References: <20230117174358.15344-1-ayan.kumar.halder@amd.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL02EPF000108E9:EE_|BN9PR12MB5226:EE_ X-MS-Office365-Filtering-Correlation-Id: 954f94af-97fa-4e29-e7d2-08daf8b29971 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230022)(4636009)(39860400002)(376002)(136003)(346002)(396003)(451199015)(46966006)(36840700001)(40470700004)(86362001)(103116003)(41300700001)(2616005)(70586007)(70206006)(47076005)(186003)(4326008)(8676002)(426003)(6916009)(82310400005)(36756003)(26005)(36860700001)(5660300002)(83380400001)(336012)(82740400003)(8936002)(54906003)(478600001)(40480700001)(316002)(1076003)(2906002)(81166007)(6666004)(40460700003)(356005)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 17 Jan 2023 17:45:18.2498 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 954f94af-97fa-4e29-e7d2-08daf8b29971 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BL02EPF000108E9.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN9PR12MB5226 X-ZohoMail-DKIM: pass (identity @amd.com) X-ZM-MESSAGEID: 1673977564450100008 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" In the subsequent patch, we introduce "CONFIG_ARM_PA_32" to support 32 bit physical addresses. Thus, the code specific to "Large Page Address Extension" (ie LPAE) should be enclosed within "ifndef CONFIG_ARM_PA_32". Refer xen/arch/arm/include/asm/short-desc.h, "short_desc_l1_supersec_t" unsigned int extbase1:4; /* Extended base address, PA[35:32] */ unsigned int extbase2:4; /* Extended base address, PA[39:36] */ Thus, extbase1 and extbase2 are not valid when 32 bit physical addresses are supported. Signed-off-by: Ayan Kumar Halder --- Changes from - v1 - 1. Extracted from "[XEN v1 8/9] xen/arm: Other adaptations required to= support 32bit paddr". xen/arch/arm/guest_walk.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/xen/arch/arm/guest_walk.c b/xen/arch/arm/guest_walk.c index 43d3215304..0feb7b76ec 100644 --- a/xen/arch/arm/guest_walk.c +++ b/xen/arch/arm/guest_walk.c @@ -154,8 +154,10 @@ static bool guest_walk_sd(const struct vcpu *v, mask =3D (1ULL << L1DESC_SUPERSECTION_SHIFT) - 1; *ipa =3D gva & mask; *ipa |=3D (paddr_t)(pte.supersec.base) << L1DESC_SUPERSECTION_= SHIFT; +#ifndef CONFIG_ARM_PA_32 *ipa |=3D (paddr_t)(pte.supersec.extbase1) << L1DESC_SUPERSECT= ION_EXT_BASE1_SHIFT; *ipa |=3D (paddr_t)(pte.supersec.extbase2) << L1DESC_SUPERSECT= ION_EXT_BASE2_SHIFT; +#endif /* CONFIG_ARM_PA_32 */ } =20 /* Set permissions so that the caller can check the flags by herse= lf. */ --=20 2.17.1