From b2f7ee2dedb4def586969f7bfae6911b9f089a93 Mon Sep 17 00:00:00 2001 From: "Liu, Zhiguang" Date: Wed, 1 Dec 2021 09:59:17 +0800 Subject: [PATCH] UefiPayloadPkg: Increase SystemMemoryUefiRegionSize from 32M to 64M Current, the SystemMemoryUefiRegionSize is 32M, which means in universal payload entry, we can at most use 32M heap. However, this can't meet the memory requirment for 5 level page table. In UefiPayloadPkg\UefiPayloadEntry\X64\VirtualMemory.c, we assume the Physical Address at most has 52 bits. Using 1G table support, with 52 bits Physical Address, to build page table, we need one page to hold 16 PML5 entries, each PML5 entry points to one page containing 512 PML4 entries. One PML4 entry points to one page containing 512 PML3 entries. Each PML3 entries will point to 1G memory space. Totally 8209 pages are needed, which is around 32M bytes. Therefore, increase SystemMemoryUefiRegionSize from 32M to 64M to support 5 level page tables. Reviewed-by: Guo Dong Reviewed-by: Ray Ni Cc: Maurice Ma Cc: Benjamin You Signed-off-by: Zhiguang Liu --- UefiPayloadPkg/UefiPayloadPkg.dec | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/UefiPayloadPkg/UefiPayloadPkg.dec b/UefiPayloadPkg/UefiPayloadPkg.dec index faa98eb98a..551f0a4915 100644 --- a/UefiPayloadPkg/UefiPayloadPkg.dec +++ b/UefiPayloadPkg/UefiPayloadPkg.dec @@ -79,7 +79,7 @@ gUefiPayloadPkgTokenSpaceGuid.PcdMemoryTypeEfiRuntimeServicesData|0xC0|UINT32|0x gUefiPayloadPkgTokenSpaceGuid.PcdMemoryTypeEfiRuntimeServicesCode|0x80|UINT32|0x00000016 # Size of the region used by UEFI in permanent memory -gUefiPayloadPkgTokenSpaceGuid.PcdSystemMemoryUefiRegionSize|0x02000000|UINT32|0x00000017 +gUefiPayloadPkgTokenSpaceGuid.PcdSystemMemoryUefiRegionSize|0x04000000|UINT32|0x00000017 gUefiPayloadPkgTokenSpaceGuid.PcdPcdDriverFile|{ 0x57, 0x72, 0xcf, 0x80, 0xab, 0x87, 0xf9, 0x47, 0xa3, 0xfe, 0xD5, 0x0B, 0x76, 0xd8, 0x95, 0x41 }|VOID*|0x00000018