[Q:linux][PATCH 0/8] Support TDX host in questing

[Hector Cao]

On Wed, Sep 3, 2025 at 2:40 PM Thibault Ferrante <
thibault.ferrante at canonical.com> wrote:

>
>
> On 03/09/2025 14:21, Hector Cao wrote:
> >     Two limitation are coming with this submission:
> >     - In specific platforms (SPR/EMR), enabling TDX (all conditions
> fulfilled)
> >     will disable kexec due to hardware limitations.
> >
> >
> > Can you elaborate this limitation a little bit more please ? I m not
> sure to fully get the point
> Once TDX is fully enabled (all conditions) on SPR(Saphire Rapids) and
> EMR(Emerald Rapids), you can't use kexec anymore.
> kexec will fail to be prepared and will show this warning:
> `Not allowed on platform with tdx_pw_mce bug`
>
>
Ok thanks, I see
This limitation only affects 2 CPU generations (SPR and EMR), on newer CPUs
that support TDX (like GNR, SRF)
we do not have this limitation.

Is my understanding correct?

-- 
Hector CAO
Software Engineer – Partner Engineering Team
hector.cao at canonical.com
https://launc <https://launchpad.net/~hectorcao>hpad.net/~hectorcao
<https://launchpad.net/~hectorcao>

<https://launchpad.net/~hectorcao>
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