Re: [edk2-devel] [PATCH V1 1/3] MdePkg/BaseLib: Update TDVMCALL_EXPOSE_REGS_MASK

["sunceping" <cepingx.sun@intel.com>]

Ping @Gao, Liming, @Kinney, Michael D
Hi Liming and Mike
Would you please review the MdePkg update?

Thanks
Ceping

> -----Original Message-----
> From: Sun, CepingX <cepingx.sun@intel.com>
> Sent: Tuesday, February 27, 2024 5:19 AM
> To: devel@edk2.groups.io
> Cc: Sun, CepingX <cepingx.sun@intel.com>; Liming Gao
> <gaoliming@byosoft.com.cn>; Kinney, Michael D
> <michael.d.kinney@intel.com>; Aktas, Erdem <erdemaktas@google.com>;
> James Bottomley <jejb@linux.ibm.com>; Yao, Jiewen
> <jiewen.yao@intel.com>; Xu, Min M <min.m.xu@intel.com>; Tom Lendacky
> <thomas.lendacky@amd.com>; Michael Roth <michael.roth@amd.com>;
> Yamahata, Isaku <isaku.yamahata@intel.com>
> Subject: [PATCH V1 1/3] MdePkg/BaseLib: Update
> TDVMCALL_EXPOSE_REGS_MASK
> 
> REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4696
> 
> Refer to the [GHCI] spec, TDVF should clear the BIT5 for RBP in the mask.
> 
> Reference:
> [GHCI]: TDX Guest-Host-Communication Interface v1.5
> https://cdrdv2.intel.com/v1/dl/getContent/726792
> 
> Cc: Liming Gao <gaoliming@byosoft.com.cn>
> Cc: Michael D Kinney <michael.d.kinney@intel.com>
> Cc: Erdem Aktas <erdemaktas@google.com>
> Cc: James Bottomley <jejb@linux.ibm.com>
> Cc: Jiewen Yao <jiewen.yao@intel.com>
> Cc: Min Xu <min.m.xu@intel.com>
> Cc: Tom Lendacky <thomas.lendacky@amd.com>
> Cc: Michael Roth <michael.roth@amd.com>
> Cc: Isaku Yamahata <isaku.yamahata@intel.com>
> Signed-off-by: Ceping Sun <cepingx.sun@intel.com>
> ---
>  MdePkg/Library/BaseLib/X64/TdVmcall.nasm | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/MdePkg/Library/BaseLib/X64/TdVmcall.nasm
> b/MdePkg/Library/BaseLib/X64/TdVmcall.nasm
> index 8dd9bfcbfa14..b20724a37015 100644
> --- a/MdePkg/Library/BaseLib/X64/TdVmcall.nasm
> +++ b/MdePkg/Library/BaseLib/X64/TdVmcall.nasm
> @@ -9,7 +9,7 @@
>  DEFAULT REL
>  SECTION .text
> 
> -%define TDVMCALL_EXPOSE_REGS_MASK       0xffec
> +%define TDVMCALL_EXPOSE_REGS_MASK       0xffcc
>  %define TDVMCALL                        0x0
> 
>  %macro tdcall 0
> --
> 2.34.1



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