Most of the times it is desirable not to use special purpose memory for regular edk2 usages. That memory (HBm/CXL) are either meant for special purposes or are less reliable to be used. So avoid using them as long as possible. We could also introduce PCD for this control.
Cc: Liming Gao <gaolim...@byosoft.com.cn> Signed-off-by: Dhaval Sharma <dha...@rivosinc.com> --- MdeModulePkg/Core/Dxe/Mem/Page.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/MdeModulePkg/Core/Dxe/Mem/Page.c b/MdeModulePkg/Core/Dxe/Mem/Page.c index 5a51d9df1a29..e4daa741b971 100644 --- a/MdeModulePkg/Core/Dxe/Mem/Page.c +++ b/MdeModulePkg/Core/Dxe/Mem/Page.c @@ -1183,6 +1183,13 @@ CoreFindFreePagesI ( continue; } + // + // Don't allocate out of Special-Purpose memory. + // + if ((Entry->Attribute & EFI_MEMORY_SP) != 0) { + continue; + } + DescStart = Entry->Start; DescEnd = Entry->End; -- 2.40.1 -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#119545): https://edk2.groups.io/g/devel/message/119545 Mute This Topic: https://groups.io/mt/106607739/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-