mirror of https://github.com/acidanthera/audk.git
c60d36b4d1
When static paging is disabled, page table for below 4GB is created and page table for above 4GB is created dynamically in page fault handler. Today's implementation only allow SMM access-out to below types of memory address no matter static paging is enabled or not: 1. Reserved, run time and ACPI NVS type 2. MMIO But certain platform feature like RAS may need to access other types of memory from SMM. Today's code blocks these platforms. This patch simplifies the policy to only block when static paging is used so that the static paging can be disabled in these platforms to meet their SMM access-out need. Setting PcdCpuSmmStaticPageTable to FALSE can disable the static paging. Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Jiewen Yao <jiewen.yao@intel.com> Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com> Cc: Eric Dong <eric.dong@intel.com> Reviewed-by: Jiewen Yao <jiewen.yao@intel.com> Acked-by: Laszlo Ersek <lersek@redhat.com> |
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|---|---|---|
| .. | ||
| Application/Cpuid | ||
| CpuDxe | ||
| CpuFeatures | ||
| CpuIo2Dxe | ||
| CpuIo2Smm | ||
| CpuIoPei | ||
| CpuMpPei | ||
| CpuS3DataDxe | ||
| Include | ||
| Library | ||
| PiSmmCommunication | ||
| PiSmmCpuDxeSmm | ||
| ResetVector | ||
| SecCore | ||
| Universal/Acpi/S3Resume2Pei | ||
| UefiCpuPkg.dec | ||
| UefiCpuPkg.dsc | ||
| UefiCpuPkg.uni | ||
| UefiCpuPkgExtra.uni | ||