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bh=reRyL0p8bwFUK45PxPrMWtUJPOIAApiXXP6NU2zUKZk=; b=r/FXYotoEZMM8Hk3dT+a2pbaYWTE1a6YatLkqNS+W/P4rp/sGSamWyEP+0e3AERXPOUCRVP0QEl0ai5nkq7+vEtzt/k9EAYwdDloAOyxFMBAQOYO9I6CmqObwrP0u/b4gsp/4CFSE2kJqtXjWpMkqgHwgtVkCEPZEgjplHANQWA= X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) client-ip=192.237.175.120; envelope-from=xen-devel-bounces@lists.xenproject.org; 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: Michal Orzel To: CC: Michal Orzel , Stefano Stabellini , Julien Grall , Bertrand Marquis , Volodymyr Babchuk Subject: [PATCH] xen/arm64: Fix incorrect DIRECTMAP_SIZE calculation Date: Mon, 16 Jan 2023 15:41:06 +0100 Message-ID: <20230116144106.12544-2-michal.orzel@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230116144106.12544-1-michal.orzel@amd.com> References: <20230116144106.12544-1-michal.orzel@amd.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN8NAM11FT004:EE_|CH2PR12MB4939:EE_ X-MS-Office365-Filtering-Correlation-Id: 8bdd33b8-dbf7-4705-d35f-08daf7cfb5b8 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Jan 2023 14:41:10.4801 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 8bdd33b8-dbf7-4705-d35f-08daf7cfb5b8 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: BN8NAM11FT004.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH2PR12MB4939 X-ZohoMail-DKIM: pass (identity @amd.com) X-ZM-MESSAGEID: 1673880332556100001 Content-Type: text/plain; charset="utf-8" The direct mapped area occupies L0 slots from 256 to 265 (i.e. 10 slots), resulting in 5TB (512GB * 10) of virtual address space. However, due to incorrect slot subtraction (we take 9 slots into account) we set DIRECTMAP_SIZE to 4.5TB instead. Fix it. Fixes: 5263507b1b4a ("xen: arm: Use a direct mapping of RAM on arm64") Signed-off-by: Michal Orzel Reviewed-by: Henry Wang Tested-by: Henry Wang --- xen/arch/arm/include/asm/config.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/xen/arch/arm/include/asm/config.h b/xen/arch/arm/include/asm/c= onfig.h index 0fefed1b8aa9..16213c8b677f 100644 --- a/xen/arch/arm/include/asm/config.h +++ b/xen/arch/arm/include/asm/config.h @@ -157,7 +157,7 @@ #define FRAMETABLE_NR (FRAMETABLE_SIZE / sizeof(*frame_table)) =20 #define DIRECTMAP_VIRT_START SLOT0(256) -#define DIRECTMAP_SIZE (SLOT0_ENTRY_SIZE * (265-256)) +#define DIRECTMAP_SIZE (SLOT0_ENTRY_SIZE * (266 - 256)) #define DIRECTMAP_VIRT_END (DIRECTMAP_VIRT_START + DIRECTMAP_SIZE - 1) =20 #define XENHEAP_VIRT_START directmap_virt_start --=20 2.25.1