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client-ip=165.204.84.17; helo=satlexmb07.amd.com; pr=C Received: from satlexmb07.amd.com (165.204.84.17) by BL02EPF0001A0FE.mail.protection.outlook.com (10.167.242.105) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9678.18 via Frontend Transport; Tue, 10 Mar 2026 06:00:40 +0000 Received: from volcano-f23bhost.amd.com (10.180.168.240) by satlexmb07.amd.com (10.181.42.216) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.17; Tue, 10 Mar 2026 01:00:38 -0500 From: Manali Shukla To: , CC: , , , , , , , , , , Subject: [PATCH v3 5/9] KVM: SVM: Extend VMCB area for virtualized IBS registers Date: Tue, 10 Mar 2026 06:00:17 +0000 Message-ID: <20260310060022.15120-6-manali.shukla@amd.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260310060022.15120-1-manali.shukla@amd.com> References: <20260310060022.15120-1-manali.shukla@amd.com> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: satlexmb07.amd.com (10.181.42.216) To satlexmb07.amd.com (10.181.42.216) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL02EPF0001A0FE:EE_|IA4PR12MB9811:EE_ X-MS-Office365-Filtering-Correlation-Id: ed614ebd-01a9-4d15-e54b-08de7e6a5bc8 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|82310400026|36860700016|1800799024; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: uYwNFYX9RlLvw33MlzrJD8C4BskEbQZlCzuYZGyp9b+LDfmI6CMzqT842LxMovxI+IS02I1Ol7WqIHvMeU6ZT/owlp+Vr3tvHqcLxJBc8Ew9up3IfYz7AgUQ5MvSqo5DgTV2bbhdy/92VKd0ihW2npoxq7z7q+70FSl1PCOZt2quyXfLHpVX+pLpkMztt5r0sdFhdPci7uOTKIGAugtQkaHu9rm42t7J0L0h1gyse7ZKVTErzNMnlf8tjBqTx3rxWn5xSURCprkg+g09r3SEj5U0keRAwxfPTXXR9Ti/mIqHElxPPhXgfqBorg3A+409QU/saiyq1004FgzmgcDyz3NbmV6o+Sm99nH9XcXP+E45trX5x3jRkwOALxbQzIOl3O5XfVTEChTENiXQcbosHGK7nLEvzFSEn0zDAZJFDaxrR6JwzBaTTYzTKmjbWRLV X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 10 Mar 2026 06:00:40.4272 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: ed614ebd-01a9-4d15-e54b-08de7e6a5bc8 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=[satlexmb07.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BL02EPF0001A0FE.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA4PR12MB9811 From: Santosh Shukla Define the new VMCB fields that will be used to save and restore the state of the following fetch and op IBS related MSRs. * MSRC001_1030 [IBS Fetch Control] * MSRC001_1031 [IBS Fetch Linear Address] * MSRC001_1033 [IBS Execution Control] * MSRC001_1034 [IBS Op Logical Address] * MSRC001_1035 [IBS Op Data] * MSRC001_1036 [IBS Op Data 2] * MSRC001_1037 [IBS Op Data 3] * MSRC001_1038 [IBS DC Linear Address] * MSRC001_103B [IBS Branch Target Address] * MSRC001_103C [IBS Fetch Control Extended] Signed-off-by: Santosh Shukla Signed-off-by: Manali Shukla --- arch/x86/include/asm/svm.h | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/arch/x86/include/asm/svm.h b/arch/x86/include/asm/svm.h index bcfeb5e7c0ed..4296efc1dafe 100644 --- a/arch/x86/include/asm/svm.h +++ b/arch/x86/include/asm/svm.h @@ -369,6 +369,17 @@ struct vmcb_save_area { u64 last_excp_to; u8 reserved_0x298[72]; u64 spec_ctrl; /* Guest version of SPEC_CTRL at 0x2E0 */ + u8 reserved_0x2e8[1168]; + u64 ibs_fetch_ctl; + u64 ibs_fetch_linear_addr; + u64 ibs_op_ctl; + u64 ibs_op_rip; + u64 ibs_op_data; + u64 ibs_op_data2; + u64 ibs_op_data3; + u64 ibs_dc_linear_addr; + u64 ibs_br_target; + u64 ibs_fetch_extd_ctl; } __packed; /* Save area definition for SEV-ES and SEV-SNP guests */ @@ -551,7 +562,7 @@ struct vmcb { }; } __packed; -#define EXPECTED_VMCB_SAVE_AREA_SIZE 744 +#define EXPECTED_VMCB_SAVE_AREA_SIZE 1992 #define EXPECTED_GHCB_SAVE_AREA_SIZE 1032 #define EXPECTED_SEV_ES_SAVE_AREA_SIZE 1648 #define EXPECTED_VMCB_CONTROL_AREA_SIZE 1024 @@ -577,6 +588,7 @@ static inline void __unused_size_checks(void) BUILD_BUG_RESERVED_OFFSET(vmcb_save_area, 0x180); BUILD_BUG_RESERVED_OFFSET(vmcb_save_area, 0x248); BUILD_BUG_RESERVED_OFFSET(vmcb_save_area, 0x298); + BUILD_BUG_RESERVED_OFFSET(vmcb_save_area, 0x2e8); BUILD_BUG_RESERVED_OFFSET(sev_es_save_area, 0xc8); BUILD_BUG_RESERVED_OFFSET(sev_es_save_area, 0xcc); -- 2.43.0