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Calculate descriptor pages strictly based on the actual map size
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This commit is contained in:
Aiken Harris
2026-03-13 12:28:15 +01:00
parent b692fe4cef
commit c71d58b737
1 changed files with 2 additions and 2 deletions
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boot/xtldr/modules/xtos_o/xtos.cc
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@@ -409,8 +409,8 @@ Xtos::InitializeLoaderBlock(IN PXTBL_PAGE_MAPPING PageMap,
} }
FbPages = EFI_SIZE_TO_PAGES(FbSize); FbPages = EFI_SIZE_TO_PAGES(FbSize);
/* Add padding to MapSize to account for the ledger mappings */ /* Calculate number of pages needed for memory descriptor list */
DescriptorPages = EFI_SIZE_TO_PAGES((PageMap->MapSize + 16) * sizeof(LOADER_MEMORY_DESCRIPTOR)); DescriptorPages = EFI_SIZE_TO_PAGES(PageMap->MapSize * sizeof(LOADER_MEMORY_DESCRIPTOR));
/* Allocate memory for the kernel initialization block and boot parameters */ /* Allocate memory for the kernel initialization block and boot parameters */
Status = XtLdrProtocol->Memory.AllocatePages(AllocateAnyPages, BlockPages, &PhysicalBlock); Status = XtLdrProtocol->Memory.AllocatePages(AllocateAnyPages, BlockPages, &PhysicalBlock);