Re: [RFC PATCH v2 06/44] hw/i386: Introduce kvm-type for TDX guest

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On Wed, Jul 07, 2021 at 05:54:36PM -0700, isaku.yamahata@xxxxxxxxx wrote:
> From: Xiaoyao Li <xiaoyao.li@xxxxxxxxx>
> 
> Introduce a machine property, kvm-type, to allow the user to create a
> Trusted Domain eXtensions (TDX) VM, a.k.a. a Trusted Domain (TD), e.g.:
> 
>  # $QEMU \
> 	-machine ...,kvm-type=tdx \
> 	...

Can we align sev and tdx better than that?

SEV is enabled this way:

qemu -machine ...,confidential-guest-support=sev0 \
     -object sev-guest,id=sev0,...

(see docs/amd-memory-encryption.txt for details).

tdx could likewise use a tdx-guest object (and both sev-guest and
tdx-guest should probably have a common parent object type) to enable
and configure tdx support.

take care,
  Gerd




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