tyler.durden
/
audk
mirror of https://github.com/acidanthera/audk.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

MdePkg/Register/Amd: define GHCB macro for the Page State Change 

BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3275

The Page State Change NAE exit will be used by the SEV-SNP guest to
request a page state change using the GHCB protocol. See the GHCB
spec section 4.1.6 and 2.3.1 for more detail on the structure
definitions.

Cc: James Bottomley <jejb@linux.ibm.com>
Cc: Min Xu <min.m.xu@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Erdem Aktas <erdemaktas@google.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Zhiguang Liu <zhiguang.liu@intel.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
Reviewed-by: Erdem Aktas <erdemaktas@google.com>
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Message-Id: <20210519181949.6574-6-brijesh.singh@amd.com>
This commit is contained in:
Brijesh Singh 2021-05-19 13:19:41 -05:00 committed by mergify[bot]
parent f0983b2074
commit 4665fa6503
2 changed files with 48 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
MdePkg/Include/Register/Amd/Fam17Msr.h
View File

@ -58,6 +58,19 @@ typedef union {
UINT64 GuestFrameNumber:52;
} GhcbGpaRegister;
struct {
UINT64 Function:12;
UINT64 GuestFrameNumber:40;
UINT64 Operation:4;
UINT64 Reserved:8;
} SnpPageStateChangeRequest;
struct {
UINT32 Function:12;
UINT32 Reserved:20;
UINT32 ErrorCode;
} SnpPageStateChangeResponse;
VOID *Ghcb;
UINT64 GhcbPhysicalAddress;
@ -69,6 +82,8 @@ typedef union {
#define GHCB_INFO_CPUID_RESPONSE 5
#define GHCB_INFO_GHCB_GPA_REGISTER_REQUEST 18
#define GHCB_INFO_GHCB_GPA_REGISTER_RESPONSE 19
#define GHCB_INFO_SNP_PAGE_STATE_CHANGE_REQUEST 20
#define GHCB_INFO_SNP_PAGE_STATE_CHANGE_RESPONSE 21
#define GHCB_HYPERVISOR_FEATURES_REQUEST 128
#define GHCB_HYPERVISOR_FEATURES_RESPONSE 129
#define GHCB_INFO_TERMINATE_REQUEST 256

33
MdePkg/Include/Register/Amd/Ghcb.h
View File

@ -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_SNP_PAGE_STATE_CHANGE 0x80000010ULL
#define SVM_EXIT_HYPERVISOR_FEATURES 0x8000FFFDULL
#define SVM_EXIT_UNSUPPORTED 0x8000FFFFULL
@ -162,4 +163,36 @@ typedef union {
#define GHCB_HV_FEATURES_SNP_AP_CREATE (GHCB_HV_FEATURES_SNP | BIT1)
#define GHCB_HV_FEATURES_SNP_RESTRICTED_INJECTION (GHCB_HV_FEATURES_SNP_AP_CREATE | BIT2)
#define GHCB_HV_FEATURES_SNP_RESTRICTED_INJECTION_TIMER (GHCB_HV_FEATURES_SNP_RESTRICTED_INJECTION | BIT3)
//
// SNP Page State Change.
//
// Note that the PSMASH and UNSMASH operations are not supported when using the MSR protocol.
//
#define SNP_PAGE_STATE_PRIVATE 1
#define SNP_PAGE_STATE_SHARED 2
#define SNP_PAGE_STATE_PSMASH 3
#define SNP_PAGE_STATE_UNSMASH 4
typedef struct {
UINT64 CurrentPage:12;
UINT64 GuestFrameNumber:40;
UINT64 Operation:4;
UINT64 PageSize:1;
UINT64 Reserved:7;
} SNP_PAGE_STATE_ENTRY;
typedef struct {
UINT16 CurrentEntry;
UINT16 EndEntry;
UINT32 Reserved;
} SNP_PAGE_STATE_HEADER;
#define SNP_PAGE_STATE_MAX_ENTRY 253
typedef struct {
SNP_PAGE_STATE_HEADER Header;
SNP_PAGE_STATE_ENTRY Entry[SNP_PAGE_STATE_MAX_ENTRY];
} SNP_PAGE_STATE_CHANGE_INFO;
#endif