Hi, > The original mailbox location is in low memory. If we do not relocate > to high memory, then the OS will see a hole in low memory.
Well, both low and high memory to be exact. qemu maps the whole firmware image below 4G, and mirrors the topmost 128k (including memfd + reset vector) below 1M. Given that TDX starts the processor in 32bit mode, so it doesn't need the 16bit entry @ f000:fff0, I assumed TDX completely ignores the low memory mapping and uses only the high memory mapping. So you are telling me this is not the case? take care, Gerd -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#82090): https://edk2.groups.io/g/devel/message/82090 Mute This Topic: https://groups.io/mt/86085763/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
