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contact devel+owner@edk2.groups.io Reply-To: devel@edk2.groups.io,brijesh.singh@amd.com X-Gm-Message-State: PDjhtD9fhof2rfdsP2fk5ibQx1787277AA= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=groups.io; q=dns/txt; s=20140610; t=1619783548; bh=67eC5pFR6TVYu4oQ6AEYb7VDA4kQj72G5w1rId0GCSk=; h=Cc:Content-Type:Date:From:Reply-To:Subject:To; b=EvQJS1ctx68187UTSJr8QoCI7sIImpyqzM12CGu8XuLNMpvI/wUWbla1UGASUyg9DsY dd/mvdKgMFFNlywwh6y6XeaCMpCqDBhsfj11WFoaYqp8+E+n6jBjNK/qeONT/KKSyCsO3 UNbpz8pVzg9zjlxHRKgh0dL8o5zbuKY0x/4= X-ZohoMail-DKIM: pass (identity @groups.io) Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3D3275 Version 2 of GHCB introduces advertisement of features that are supported by the hypervisor. See the GHCB spec section 2.2 for an additional details. Cc: James Bottomley Cc: Min Xu Cc: Jiewen Yao Cc: Tom Lendacky Cc: Jordan Justen Cc: Ard Biesheuvel Cc: Laszlo Ersek Cc: Erdem Aktas Signed-off-by: Brijesh Singh Reviewed-by: Laszlo Ersek --- MdePkg/Include/Register/Amd/Fam17Msr.h | 7 +++++++ MdePkg/Include/Register/Amd/Ghcb.h | 6 ++++++ 2 files changed, 13 insertions(+) diff --git a/MdePkg/Include/Register/Amd/Fam17Msr.h b/MdePkg/Include/Regist= er/Amd/Fam17Msr.h index 4d33bef220..a65d51ab12 100644 --- a/MdePkg/Include/Register/Amd/Fam17Msr.h +++ b/MdePkg/Include/Register/Amd/Fam17Msr.h @@ -48,6 +48,11 @@ typedef union { UINT32 Reserved2:32; } GhcbTerminate; =20 + struct { + UINT64 Function:12; + UINT64 Features:52; + } GhcbHypervisorFeatures; + VOID *Ghcb; =20 UINT64 GhcbPhysicalAddress; @@ -57,6 +62,8 @@ typedef union { #define GHCB_INFO_SEV_INFO_GET 2 #define GHCB_INFO_CPUID_REQUEST 4 #define GHCB_INFO_CPUID_RESPONSE 5 +#define GHCB_HYPERVISOR_FEATURES_REQUEST 128 +#define GHCB_HYPERVISOR_FEATURES_RESPONSE 129 #define GHCB_INFO_TERMINATE_REQUEST 256 =20 #define GHCB_TERMINATE_GHCB 0 diff --git a/MdePkg/Include/Register/Amd/Ghcb.h b/MdePkg/Include/Register/A= md/Ghcb.h index ccdb662af7..2d64a4c28f 100644 --- a/MdePkg/Include/Register/Amd/Ghcb.h +++ b/MdePkg/Include/Register/Amd/Ghcb.h @@ -54,6 +54,7 @@ #define SVM_EXIT_NMI_COMPLETE 0x80000003ULL #define SVM_EXIT_AP_RESET_HOLD 0x80000004ULL #define SVM_EXIT_AP_JUMP_TABLE 0x80000005ULL +#define SVM_EXIT_HYPERVISOR_FEATURES 0x8000FFFDULL #define SVM_EXIT_UNSUPPORTED 0x8000FFFFULL =20 // @@ -154,4 +155,9 @@ typedef union { #define GHCB_EVENT_INJECTION_TYPE_EXCEPTION 3 #define GHCB_EVENT_INJECTION_TYPE_SOFT_INT 4 =20 +// Hypervisor features +#define GHCB_HV_FEATURES_SNP BIT0 +#define GHCB_HV_FEATURES_SNP_AP_CREATE (GHCB_HV_FEATURE= S_SNP | BIT1) +#define GHCB_HV_FEATURES_SNP_RESTRICTED_INJECTION (GHCB_HV_FEATURE= S_SNP_AP_CREATE | BIT2) +#define GHCB_HV_FEATURES_SNP_RESTRICTED_INJECTION_TIMER (GHCB_HV_FEATURE= S_SNP_RESTRICTED_INJECTION | BIT3) #endif --=20 2.17.1 -=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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