This is beacuse UEFI only allocates the first memory node memory space for SbsaQemu platform,  i refer to implemet of "OvmfPkg/Fdt/HighMemDxe" and add the support for other memory nodes via GCD services. Maybe you can apply patch "support multi memory nodes" together with this patch. -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#115641): https://edk2.groups.io/g/devel/message/115641 Mute This Topic: https://groups.io/mt/104074353/7686176 Group Owner: devel+owner@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [rebecca@openfw.io] -=-=-=-=-=-=-=-=-=-=-=-