Re: [edk2-devel] [PATCH 0/3] Fix potential issue in CpuPageTableLib and SMM page table initialization

["Ni, Ray" <ray.ni@intel.com>]

More background: The patch series fix a SMM hang issue that's observed in reboot cycling test.

Thanks,
Ray
> -----Original Message-----
> From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of duntan
> Sent: Monday, February 5, 2024 10:04 PM
> To: devel@edk2.groups.io
> Subject: [edk2-devel] [PATCH 0/3] Fix potential issue in CpuPageTableLib and
> SMM page table initialization
> 
> This patch set is to fix potential issue in CpuPageTableLib and SMM page table
> initialization
> 
> The first patch "UefiCpuPkg: Reduce and optimize access to attribute" is to
> reduce and optimize access to
> attribute in page table modification code in CpuPageTableLib.
> 
> The patch "UefiCpuPkg: Add more Paging mode enumeration" and "
> UefiCpuPkg/PiSmmCpuDxeSmm:Map SMRAM in 4K page granularity"
> is to map SMRAM in 4K page granularity during SMM page table
> initialization(SmmInitPageTable).
> This is to avoid the SMRAM paging-structure layout change(page split) when
> SMM ready to lock (PerformRemainingTasks).
> 
> Dun Tan (2):
>   UefiCpuPkg: Add more Paging mode enumeration
>   UefiCpuPkg/PiSmmCpuDxeSmm:Map SMRAM in 4K page granularity
> 
> Zhou Jianfeng (1):
>   UefiCpuPkg: Reduce and optimize access to attribute
> 
>  UefiCpuPkg/Include/Library/CpuPageTableLib.h         |   8 +++++++-
>  UefiCpuPkg/Library/CpuPageTableLib/CpuPageTableMap.c |  86
> +++++++++++++++++++++++++++++++++++++++++++++++++++++---------
> ------------------------
>  UefiCpuPkg/PiSmmCpuDxeSmm/SmmCpuMemoryManagement.c   | 116
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> ++++++++++++++++++++++++++++++++++------------------------
>  3 files changed, 152 insertions(+), 58 deletions(-)
> 
> --
> 2.31.1.windows.1
> 
> 
> 
> 
> 



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