[edk2-devel] [PATCH 0/6] Substract TME-MK KEY_ID_BITS from CPU max PA

[Ni, Ray]

I don' t think vt is related.

For tdx, the actual max physical address bits is decreased by the KEY_ID_BITS bits.
But the max physical address bits reported from CPUID instruction don't change.

Details in https://cdrdv2-public.intel.com/679154/multi-key-total-memory-encryption-spec-1.4.pdf



> -----Original Message-----
> From: devel at edk2.groups.io <devel at edk2.groups.io> On Behalf Of Gerd
> Hoffmann
> Sent: Thursday, March 30, 2023 3:25 PM
> To: Ni, Ray <ray.ni at intel.com>
> Cc: Tom Lendacky <thomas.lendacky at amd.com>; devel at edk2.groups.io
> Subject: Re: [edk2-devel] [PATCH 0/6] Substract TME-MK KEY_ID_BITS from
> CPU max PA
> 
> On Thu, Mar 30, 2023 at 02:26:25AM +0000, Ni, Ray wrote:
> > Gerd,
> > This is needed by Intel platform for TME-MK. Can you help to analyze if it
> has any impact to OVMF? I assume no.
> 
> How does that feature interact with vt and tdx?
> 
> take care,
>   Gerd
> 
> 
> 
> 
> 



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