Re: [PATCH 1/6] x86/tdx: Support hypercalls for TDX guests on Hyper-V

[Dave Hansen]

On 11/21/22 11:51, Dexuan Cui wrote:
> __tdx_hypercall() doesn't work for a TDX guest running on Hyper-V,
> because Hyper-V uses a different calling convention, so add the
> new function __tdx_ms_hv_hypercall().

Other than R10 being variable here and fixed for __tdx_hypercall(), this
looks *EXACTLY* the same as __tdx_hypercall(), or at least a strict
subset of what __tdx_hypercall() can do.

Did I miss something?

Another way of saying this:  It seems like you could do this with a new
version of _tdx_hypercall() (and all in C) instead of a new
__tdx_hypercall().