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mx.microsoft.com 1; spf=pass smtp.mailfrom=amd.com; dmarc=pass action=none header.from=amd.com; dkim=pass header.d=amd.com; arc=none X-Received: from DM5PR12MB1355.namprd12.prod.outlook.com (2603:10b6:3:6e::7) by DM6PR12MB3276.namprd12.prod.outlook.com (2603:10b6:5:15e::28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3477.24; Thu, 29 Oct 2020 14:19:43 +0000 X-Received: from DM5PR12MB1355.namprd12.prod.outlook.com ([fe80::e442:c052:8a2c:5fba]) by DM5PR12MB1355.namprd12.prod.outlook.com ([fe80::e442:c052:8a2c:5fba%6]) with mapi id 15.20.3499.027; Thu, 29 Oct 2020 14:19:43 +0000 From: "Lendacky, Thomas" To: devel@edk2.groups.io CC: Brijesh Singh , Eric Dong , Ray Ni , Laszlo Ersek , Rahul Kumar Subject: [edk2-devel] [PATCH v3 11/11] UefiCpuPkg/MpInitLib: For SEV-ES guest, set stack based on processor number Date: Thu, 29 Oct 2020 09:18:02 -0500 Message-ID: In-Reply-To: References: X-Originating-IP: [165.204.77.1] X-ClientProxiedBy: DM6PR02CA0158.namprd02.prod.outlook.com (2603:10b6:5:332::25) To DM5PR12MB1355.namprd12.prod.outlook.com (2603:10b6:3:6e::7) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 X-Received: from tlendack-t1.amd.com (165.204.77.1) by DM6PR02CA0158.namprd02.prod.outlook.com (2603:10b6:5:332::25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3499.18 via Frontend Transport; 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contact devel+owner@edk2.groups.io Reply-To: devel@edk2.groups.io,thomas.lendacky@amd.com X-Gm-Message-State: xm1AqT1Q5vF41F8BfUCcL0gox1787277AA= Content-Transfer-Encoding: quoted-printable DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=groups.io; q=dns/txt; s=20140610; t=1603981191; bh=jAN2yQsvbCjLofGhSrFEBNHTunIi0mw/04b6f5D0h88=; h=CC:Content-Type:Date:From:Reply-To:Subject:To; b=Ja047CeqHvqe790iRY2MQQVKDgv1lziDU3jCqq8JXlqc9iN6W+kykKMoRhfzHdmw7UO 6u/Pi6EBPx41GiHwVKMTBGlKRqChGfll/hcb2kDYtnf4RKfbYguqq1O1UqR3JzYsJsAN6 KiQXpUxOAz2rx8b4mM4rstqJGUbxiNFpwdM= X-ZohoMail-DKIM: pass (identity @groups.io) Content-Type: text/plain; charset="utf-8" From: Tom Lendacky BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3D3008 Set the SEV-ES reset stack address for an AP based on the processor number instead of the APIC ID in case the APIC IDs are not zero-based and densely packed/enumerated. This will ensure an AP reset stack address does not get set outside of the AP reset stack memory allocation. Cc: Eric Dong Cc: Ray Ni Cc: Laszlo Ersek Cc: Rahul Kumar Acked-by: Ray Ni Signed-off-by: Tom Lendacky --- UefiCpuPkg/Library/MpInitLib/MpLib.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/UefiCpuPkg/Library/MpInitLib/MpLib.c b/UefiCpuPkg/Library/MpIn= itLib/MpLib.c index 1f47ff3f73b5..681fa79b4cff 100644 --- a/UefiCpuPkg/Library/MpInitLib/MpLib.c +++ b/UefiCpuPkg/Library/MpInitLib/MpLib.c @@ -680,11 +680,16 @@ MpInitLibSevEsAPReset ( IN CPU_MP_DATA *CpuMpData ) { + EFI_STATUS Status; + UINTN ProcessorNumber; UINT16 Code16, Code32; AP_RESET *APResetFn; UINTN BufferStart; UINTN StackStart; =20 + Status =3D GetProcessorNumber (CpuMpData, &ProcessorNumber); + ASSERT_EFI_ERROR (Status); + Code16 =3D GetProtectedMode16CS (); Code32 =3D GetProtectedMode32CS (); =20 @@ -696,7 +701,7 @@ MpInitLibSevEsAPReset ( =20 BufferStart =3D CpuMpData->MpCpuExchangeInfo->BufferStart; StackStart =3D CpuMpData->SevEsAPResetStackStart - - (AP_RESET_STACK_SIZE * GetApicId ()); + (AP_RESET_STACK_SIZE * ProcessorNumber); =20 // // This call never returns. --=20 2.28.0 -=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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