On 05/07/21 22:38, Brijesh Singh wrote:
> BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3275
>
> An SEV-SNP guest is required to perform the GHCB GPA registration. See
> the GHCB specification for further details.
>
> Cc: James Bottomley <[email protected]>
> Cc: Min Xu <[email protected]>
> Cc: Jiewen Yao <[email protected]>
> Cc: Tom Lendacky <[email protected]>
> Cc: Jordan Justen <[email protected]>
> Cc: Ard Biesheuvel <[email protected]>
> Cc: Laszlo Ersek <[email protected]>
> Cc: Erdem Aktas <[email protected]>
> Cc: Michael D Kinney <[email protected]>
> Cc: Liming Gao <[email protected]>
> Cc: Zhiguang Liu <[email protected]>
> Reviewed-by: Laszlo Ersek <[email protected]>
> Signed-off-by: Brijesh Singh <[email protected]>
> ---
> MdePkg/Include/Register/Amd/Fam17Msr.h | 7 +++++++
> 1 file changed, 7 insertions(+)
Looks OK, thanks!
Laszlo
>
> diff --git a/MdePkg/Include/Register/Amd/Fam17Msr.h
> b/MdePkg/Include/Register/Amd/Fam17Msr.h
> index cdb8f588ccf8..542e4cdf4782 100644
> --- a/MdePkg/Include/Register/Amd/Fam17Msr.h
> +++ b/MdePkg/Include/Register/Amd/Fam17Msr.h
> @@ -53,6 +53,11 @@ typedef union {
> UINT64 Features:52;
> } GhcbHypervisorFeatures;
>
> + struct {
> + UINT64 Function:12;
> + UINT64 GuestFrameNumber:52;
> + } GhcbGpaRegister;
> +
> VOID *Ghcb;
>
> UINT64 GhcbPhysicalAddress;
> @@ -62,6 +67,8 @@ typedef union {
> #define GHCB_INFO_SEV_INFO_GET 2
> #define GHCB_INFO_CPUID_REQUEST 4
> #define GHCB_INFO_CPUID_RESPONSE 5
> +#define GHCB_INFO_GHCB_GPA_REGISTER_REQUEST 18
> +#define GHCB_INFO_GHCB_GPA_REGISTER_RESPONSE 19
> #define GHCB_HYPERVISOR_FEATURES_REQUEST 128
> #define GHCB_HYPERVISOR_FEATURES_RESPONSE 129
> #define GHCB_INFO_TERMINATE_REQUEST 256
>
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