Re: [PATCH v2 2/8] x86/mtrr: support setting MTRR state for software defined MTRRs

[Juergen Gross]

On 13.02.23 16:40, Borislav Petkov wrote:
> On Mon, Feb 13, 2023 at 04:18:48PM +0100, Juergen Gross wrote:
> > Yes, you still could construct cases where it would go wrong, but I don't
> > think we should over-engineer it.
>
> Actually, we should allow only those for which we know they get special
> treatment for MTRRs settings and warn for all the rest.
>
> And judging by Dave's reply, I think TDX should be in that category too
> since it throws #VEs...

Okay, and it has MTRRs enabled (as Hyper-V SEV-SNP guests), so I shouldn't
test that, I guess (or we should disable the feature before calling the
overwrite function).


Juergen

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