From: "sunceping" <cepingx.sun@intel.com>
To: devel@edk2.groups.io
Cc: Ceping Sun <cepingx.sun@intel.com>,
Liming Gao <gaoliming@byosoft.com.cn>,
Michael D Kinney <michael.d.kinney@intel.com>,
Erdem Aktas <erdemaktas@google.com>,
James Bottomley <jejb@linux.ibm.com>,
Jiewen Yao <jiewen.yao@intel.com>, Min Xu <min.m.xu@intel.com>,
Tom Lendacky <thomas.lendacky@amd.com>,
Michael Roth <michael.roth@amd.com>,
Isaku Yamahata <isaku.yamahata@intel.com>
Subject: [edk2-devel] [PATCH V1 1/3] MdePkg/BaseLib: Update TDVMCALL_EXPOSE_REGS_MASK
Date: Tue, 27 Feb 2024 05:18:31 +0800 [thread overview]
Message-ID: <20240226211833.3156606-2-cepingx.sun@intel.com> (raw)
In-Reply-To: <20240226211833.3156606-1-cepingx.sun@intel.com>
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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next prev parent reply other threads:[~2024-02-26 5:19 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-26 21:18 [edk2-devel] [PATCH V1 0/3] OvmfPkg: Update TDVMCALL to avoid leaking secrets to the VMM sunceping
2024-02-26 21:18 ` sunceping [this message]
2024-03-04 1:09 ` [edk2-devel] [PATCH V1 1/3] MdePkg/BaseLib: Update TDVMCALL_EXPOSE_REGS_MASK Min Xu
2024-03-04 3:22 ` sunceping
2024-03-13 7:32 ` sunceping
2024-03-14 14:33 ` 回复: " gaoliming via groups.io
2024-02-26 21:18 ` [edk2-devel] [PATCH V1 2/3] OvmfPkg/CcExitLib: " sunceping
2024-03-04 1:09 ` Min Xu
2024-02-26 21:18 ` [edk2-devel] [PATCH V1 3/3] OvmfPkg/TdxDxe: Clear the registers before tdcall sunceping
2024-02-27 12:25 ` Isaku Yamahata
2024-02-28 8:27 ` sunceping
2024-03-04 1:09 ` Min Xu
2024-02-27 6:48 ` [edk2-devel] [PATCH V1 0/3] OvmfPkg: Update TDVMCALL to avoid leaking secrets to the VMM Min Xu
2024-03-12 5:53 ` Yao, Jiewen
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