On 11/13/23 07:22, Sheng Wei wrote: > Patch V4: > Separate the changes to 5 patches. > 1) Add macro definitions for CET feature for NASM files. > 2) Use macro CR4_CET_BIT to replace hard code value in Cet.nasm. > 3) Use CET macro definitions in Cet.inc for SmiEntry.nasm files. > 4) Only change CR4.CET bit for enable/disable CET. > 5) Backup and Restore MSR IA32_U_CET in SMI handler. > Remove some unused code. > It is no need to clear MSR IA32_S_CET, > because clear CR4.CET bit will disable all CET functions. > Since CET is disabled between clear CR4.CET and run 'rsm', > it is no need to delay MSR IA32_S_CET restoration. > > Patch V3: > Remove the 3rd patch. mSmmInterruptSspTables is a global variable. > It is unnecessary to initializ it to zero manually. > > Patch V2: > No function change with Patch V1. > Split the patch to into 3 separate patches. > > Sheng Wei (5): > UefiCpuPkg: Add macro definitions for CET feature for NASM files. > UefiCpuPkg: Use macro CR4_CET_BIT to replace hard code value in > Cet.nasm. > UefiCpuPkg: Use CET macro definitions in Cet.inc for SmiEntry.nasm > files. > UefiCpuPkg: Only change CR4.CET bit for enable and disable CET. > UefiCpuPkg: Backup and Restore MSR IA32_U_CET in SMI handler. > > UefiCpuPkg/Include/Cet.inc | 26 +++++++++++++ > UefiCpuPkg/PiSmmCpuDxeSmm/Ia32/Cet.nasm | 5 ++- > UefiCpuPkg/PiSmmCpuDxeSmm/Ia32/SmiEntry.nasm | 39 +++++++++++-------- > UefiCpuPkg/PiSmmCpuDxeSmm/X64/Cet.nasm | 5 ++- > UefiCpuPkg/PiSmmCpuDxeSmm/X64/SmiEntry.nasm | 40 +++++++++++--------- > 5 files changed, 78 insertions(+), 37 deletions(-) > create mode 100644 UefiCpuPkg/Include/Cet.inc >
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