Tianocore/edk2.git/MdeModulePkg/Core/Dxe/Mem, branch master

MdeModulePkg: MemoryBins: make GoogleTest page-granularity aware

2026-07-31T15:16:47+00:00

MemoryBinGoogleTest.PopulatesFromValidHob asserted fixed page counts for each memory type. PopulateMemoryTypeInformation, however, rounds the runtime memory types (EfiReservedMemoryType, EfiACPIMemoryNVS, EfiRuntimeServicesCode, EfiRuntimeServicesData) up to RUNTIME_PAGE_ALLOCATION_GRANULARITY. That granularity equals EFI_PAGE_SIZE on IA32/X64, so the hard-coded values happened to match, but it is 64 KiB on AArch64, where the same inputs round up to different page counts and the test failed. Compute the expected page counts with the same granularity rounding the production code uses, so the test passes on all host architectures instead of only x86. Signed-off-by: Jeff Brasen

MdeModulePkg: Dxe Core: Correct gMemoryTypeInformation Definition

2026-07-09T12:46:51+00:00

Commit 43e306806e3c1ed3ad7e9913492732e893cafa0f added support to DXE Core for EfiUnacceptedMemoryType. However, it incorrectly added EFI_GCD_MEMORY_TYPE_UNACCEPTED to gMemoryTypeInformation, which is the GCD memory type that is associated with EfiUnacceptedMemoryType. All other changes from that PR appear correct. This is corrected to the EFI memory type. The Memory Bin Google Test copied this incorrect definition, so it is updated as well. Signed-off-by: Oliver Smith-Denny

MdeModulePkg: MemoryBins: Add GoogleTest and README

2026-06-24T15:53:58+00:00

This commit adds unit tests and documentation for the Memory Bin feature. Signed-off-by: Oliver Smith-Denny

MdeModulePkg: Dxe Core: Split Memory Bin Logic Into Separate File

2026-06-24T15:53:58+00:00

This commits splits out logic currently contained in Gcd.c and Page.c to a new file called MemoryBin.c. This is set up in preparation to add support to PEI for memory bins (an S4 resume stability feature). MemoryBin.c takes all global state in as parameters so that DXE core can use globals and PEI core can use HOBs. There is no logic change here, just consolidating the functionality to share with PEI. This was requested not to be a library. Signed-off-by: Oliver Smith-Denny

MdeModulePkg: Dxe Core: Add Resource Desc Hob Generation

2026-06-24T15:53:58+00:00

This commit adds a parameter to the memory bin allocation function to tell it whether it should create the Resource Descriptor HOB owned by gMemoryTypeInformationGuid. This will be used by PEI to tell DXE where the memory bins are. Signed-off-by: Oliver Smith-Denny

MdeModulePkg: Dxe Core: Add Stats Init Helper

2026-06-24T15:53:58+00:00

This adds a helper function to initialize the memory bin statistics as the same logic is repeated in several places. Signed-off-by: Oliver Smith-Denny

MdeModulePkg: Dxe Core: Prep CoreSetMemoryTypeInformationRange for PEI

2026-06-24T15:53:58+00:00

Migrate CoreSetMemoryTypeInformationRange() to not use globals so it can be used in PEI as well. This temporarily moves the EFI_MEMORY_STATISTICS structure to DxeMain.h so that it can be used in Gcd.c as well as Page.c. This will migrate to a different private header once that is included. Signed-off-by: Oliver Smith-Denny

MdeModulePkg: Dxe Core: Add UpdateMemoryStatistics Helper Fn

2026-06-24T15:53:58+00:00

In preparation for sharing logic with PEI, create a helper function to update the memory bin statistics. Signed-off-by: Oliver Smith-Denny

MdeModulePkg: Dxe Core: Add AllocateMemoryBins Helper Fn

2026-06-24T15:53:58+00:00

In preparation for sharing logic with PEI for memory bins, add AllocateMemoryTypeInformationBins(). Signed-off-by: Oliver Smith-Denny

MdeModulePkg: Dxe Core: Update Bin Size Helper Fn

2026-06-24T15:53:58+00:00

In preparation for sharing memory bin logic between PEI and DXE, update CaclulateTotalMemoryBinSizeNeeded() to take gMemoryTypeInformation by reference. Signed-off-by: Oliver Smith-Denny