Re: [PATCH v5 16/16] x86/tdx: Add cmdline option to force use of ioremap_host_shared

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Presumably bios code is in arch/x86 and drivers/acpi, right?
Up to 200 calls the majority of which is likely private ...

Yes.

I don't have better ideas but the current setup will just
result in people making their guests vulnerable whenever they
want to allow device pass-through.


Yes that's true. For current TDX our target is virtual devices only. But if pass through usage will be really wide spread we may need to revisit.


-Andi



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