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Tue, 31 Oct 2023 00:37:36 -0500 From: "Jacque Lin via groups.io" To: CC: Jacque Lin , Abdul Lateef Attar , Abner Chang Subject: [edk2-devel] [PATCH v2] UefiCpuPkg/MmSaveStateLib: Remove checking Smm Rev ID in AMD MmSaveStateLib Date: Tue, 31 Oct 2023 13:37:11 +0800 Message-ID: <20231031053711.1416-1-hsienchieh.lin@amd.com> MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY4PEPF0000EDD3:EE_|MN0PR12MB5786:EE_ X-MS-Office365-Filtering-Correlation-Id: 70e7f107-fa60-4b32-4289-08dbd9d37e53 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam-Message-Info: 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 X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 31 Oct 2023 05:37:38.2676 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 70e7f107-fa60-4b32-4289-08dbd9d37e53 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: CY4PEPF0000EDD3.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN0PR12MB5786 Precedence: Bulk List-Subscribe: List-Help: Sender: devel@edk2.groups.io List-Id: Mailing-List: list devel@edk2.groups.io; contact devel+owner@edk2.groups.io Reply-To: devel@edk2.groups.io,hsienchieh.lin@amd.com List-Unsubscribe-Post: List-Unsubscribe=One-Click List-Unsubscribe: X-Gm-Message-State: lmZ9JPPPhvbKpYcRFOgTzlpnx1787277AA= Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @groups.io) X-ZM-MESSAGEID: 1698730665658100001 Content-Type: text/plain; charset="utf-8" Remove checking SMM Rev ID in AMD Save State lib when reading Save State Register EFI_MM_SAVE_STATE_REGISTER_IO. For AMD, it is not necessary to check SmmRevId when reading Save State Register EFI_MM_SAVE_STATE_REGISTER_IO. Cc: Abdul Lateef Attar Cc: Abner Chang Signed-off-by: Jacque Lin --- UefiCpuPkg/Library/MmSaveStateLib/AmdMmSaveState.c | 13 ------------- 1 file changed, 13 deletions(-) diff --git a/UefiCpuPkg/Library/MmSaveStateLib/AmdMmSaveState.c b/UefiCpuPk= g/Library/MmSaveStateLib/AmdMmSaveState.c index 3315a6cc44..c4bf6ad4bb 100644 --- a/UefiCpuPkg/Library/MmSaveStateLib/AmdMmSaveState.c +++ b/UefiCpuPkg/Library/MmSaveStateLib/AmdMmSaveState.c @@ -102,7 +102,6 @@ MmSaveStateReadRegister ( OUT VOID *Buffer ) { - UINT32 SmmRevId; EFI_MM_SAVE_STATE_IO_INFO *IoInfo; AMD_SMRAM_SAVE_STATE_MAP *CpuSaveState; UINT8 DataWidth; @@ -124,18 +123,6 @@ MmSaveStateReadRegister ( =20 // Check for special EFI_MM_SAVE_STATE_REGISTER_IO if (Register =3D=3D EFI_MM_SAVE_STATE_REGISTER_IO) { - // - // Get SMM Revision ID - // - MmSaveStateReadRegisterByIndex (CpuIndex, AMD_MM_SAVE_STATE_REGISTER_S= MMREVID_INDEX, sizeof (SmmRevId), &SmmRevId); - - // - // See if the CPU supports the IOMisc register in the save state - // - if (SmmRevId < AMD_SMM_MIN_REV_ID_X64) { - return EFI_NOT_FOUND; - } - // Check if IO Restart Dword [IO Trap] is valid or not using bit 1. if (!(CpuSaveState->x64.IO_DWord & 0x02u)) { return EFI_NOT_FOUND; --=20 2.36.1.windows.1 -=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D-=3D- Groups.io Links: You receive all messages sent to this group. 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