* Dave Allan <dallan@redhat.com> [2011-07-01 16:56:29]:
libvirt has virConnectGetCapabilities() that would export an XML file describing the capabilities of the host platform and guest features.
KVM hypervisor's capability to support S3 can be exported as a host feature in the XML as follows:
<host> <uuid>94a3492f-2635-2491-8c87-8de976fad119</uuid> <cpu> <arch>x86_64</arch> <features> <<<=== New host feature fields <S3/> <S4/> </features>
Just my $.02, but calling it <features> seems to be confusingly close to the existing <feature> tag. Maybe <power_management> ?
Yes, I am open to naming the tag power_management. Any other similar attributes that could be included here in future? Would calling it power_management be very restrictive? --Vaidy