audk/OvmfPkg/Library/BaseMemEncryptTdxLib
Ceping Sun 8a41004643 OvmfPkg/BaseMemEncryptTdxLib: Handle retry result of MapGPA
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=4572

According to section 3.2 of the [GHCI] document, if the return status
of MapGPA is "TDG.VP.VMCALL_RETRY", TD must retry this operation for the
pages in the region starting at the GPA specified in R11.

In this patch, when a retry state is detected, TDVF needs to retry the
mapping with the specified address from the output results of TdVmCall.

Reference:
[GHCI]: TDX Guest-Host-Communication Interface v1.0
https://cdrdv2.intel.com/v1/dl/getContent/726790

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: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Signed-off-by: Ceping Sun <cepingx.sun@intel.com>
2023-11-09 17:15:39 +00:00
..
BaseMemEncryptTdxLib.inf OvmfPkg: Call gEdkiiMemoryAcceptProtocolGuid to accept pages 2022-11-01 10:08:10 +00:00
BaseMemEncryptTdxLibNull.inf
BaseMemoryEncryptionNull.c
MemoryEncryption.c OvmfPkg/BaseMemEncryptTdxLib: Handle retry result of MapGPA 2023-11-09 17:15:39 +00:00
VirtualMemory.h