On Tue, Dec 05, 2023 at 08:08:34PM +0000, Huang, Kai wrote:
> The difference is for TDX host the kernel needs to initialize the TDX module
> first before TDX can be used. The module initialization is done at runtime, and
> the platform_tdx_enabled() here only returns whether the BIOS has enabled TDX.
>
> IIUC the X86_FEATURE_ flag doesn't suit this purpose because based on my
> understanding the flag being present means the kernel has done some enabling
> work and the feature is ready to use.
Which flag do you mean? X86_FEATURE_TDX_GUEST?
I mean, you would set a separate X86_FEATURE_TDX or so flag to denote
that the BIOS has enabled it, at the end of that tdx_init() in the first
patch.
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
