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On Wed, 2021-06-09 at 17:47 +0200, Paolo Bonzini wrote:
On 09/06/21 16:28, James Bottomley wrote:Initial state of what? We currently have two entries: one points toThat would cut across the ApEntrypoint and the guidedStructureEnd.Isn't the initial state included in the save area just like for SEV-
the address and size of the secrets page and the other gives the
address of the ES work area page that's used for AP reset.
So it's not even QEMU, but rather some external tool that buildsYes, it's really to make the configuration of the OVMF blob somewhat
introspectable. The current consumer is QEMU, but I see no reason why
other tools might not use this mechanism as well.
The GUIDed structure can either include the entry point code; or itWell, exactly ... depending on what the requirement is we can do pretty
much anything with the data contents with the only caveat that it's
currently constructed by an asm file, so we don't quite have the full
macro power of C available. However, symbol resolution is definitely
possible and quite easy.