nova/max-sev-guests-e3da9adb3f75fbb8.yaml at 6fb1997def0757d42363ed8c8cc058d0703c4ad6 - nova - OpenDev: Free Software Needs Free Tools

openstack/nova

Takashi Kajinami 03055de176 Detect maximum number of SEV guests automatically

Libvirt has implemented the capability to expose maximum number of
SEV guests and SEV-ES guests in 8.0.0[1][2]. This allows nova to detect
maximum number of memory encrypted guests using that feature.
The detection is not used if the [libvirt] num_memory_encrypted_guests
option is set to preserve the current behavior.

Note that current nova supports only SEV and does not support SEV-ES,
so this implementation only uses the maximum number of SEV guests.
The maximum number of SEV-ES guests will be used in case we implement
support for SEV-ES.

[1] 34cb8f6fcd
[2] 7826148a72

Implements: blueprint libvirt-detect-sev-max-guests
Change-Id: I502e1713add7e6a1eb11ecce0cc2b5eb6a14527a

2023-11-23 07:58:54 +00:00

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 features:
   - |
     Now the libvirt driver is capable to detect maximum number of guests with
     memory encrypted which can run concurrently in its compute host using
     the new fields in libvirt API available since version 8.0.0.