Re: [edk2-devel] [PATCH 13/16] UefiCpuPkg/MpInitLib: Always use AP Create if PcdSevSnpApicIds is set

["Gerd Hoffmann" <kraxel@redhat.com>]

On Fri, Jan 26, 2024 at 04:13:12PM -0600, Tom Lendacky wrote:
> BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=4654
> 
> Currently, the first time an AP is started for an SEV-SNP guest, it relies
> on the VMSA as set by the hypervisor. If the list of APIC IDs has been
> retrieved, this is not necessary. Instead, use the SEV-SNP AP Create
> protocol to start the AP for the first time and thereafter using the VMPL
> at which the BSP is running.
> 
> Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>

> +BOOLEAN
> +SevSnpUseCreateAP (
> +  IN  CPU_MP_DATA  *CpuMpData
> +  )
> +{
> +  //
> +  // SEV-SNP is not supported on 32-bit build.
> +  //
> +  return FALSE;
> +}

Hmm.  Should the 32-bit build just use the NULL versions of the
Libraries?

take care,
  Gerd



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