Re: [PATCH Part1 v5 33/38] x86/sev: Provide support for SNP guest request NAEs

Borislav Petkov
2021-08-27T18:12:47Z

On Fri, Aug 27, 2021 at 01:07:59PM -0500, Brijesh Singh wrote:
> Okay, works for me. The main reason why I choose the enum was to not
> expose the GHCB exit code to the driver

Why does that matter?

> but I guess that attestation driver need to know which VMGEXIT need to
> be called, so, its okay to have it pass the VMGEXIT number instead of
> enum.

Well, they're in an uapi header - can't be more public than that. :-)

> So far most of the changes were in x86 specific files. However, the
> attestation service is available through a driver to the userspace. The
> driver needs to use the VMGEXIT routines provides by the x86 core. I
> created the said header file so that driver does not need to include
> <asm/sev.h/sev-common.h> etc and will compile for !x86.

Lemme ask my question again:

Is SNP available on something which is !x86, all of a sudden?

Why would you want to compile that driver on anything but x86?

--
Regards/Gruss,
Boris.