Re: [PATCH v2 0/3] KVM: EFER.LMSLE cleanup

[Borislav Petkov]

On Wed, Sep 21, 2022 at 09:23:40AM -0700, Jim Mattson wrote:
> AMD defined the 64-bit x86 extensions while Intel was distracted with
> their VLIW science fair project. In this space, Intel produces AMD64
> compatible CPUs.

Almost-compatible. And maybe, just maybe, because Intel were probably
and practically forced to implement AMD64 but then thought, oh well,
we'll do some things differently.

> The definitive specification comes from AMD (which is sad, because
> AMD's documentation is abysmal).

Just don't tell me the SDM is better...

But you and I are really talking past each other: there's nothing
definitive about a spec if, while implementing it, the other vendor is
doing some subtle, but very software visible things differently.

I.e., the theory vs reality point I'm trying to get across.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette