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Normally when an UEFI firmware is marked as read-only, an associated
NVRAM file will be created. Some builds of UEFI firmware, however, wish
to remain stateless and so will be read-only, but never have any NVRAM
file. To represent this concept a 'stateless' tristate bool attribute
is introduced on the <loader/> element.
There are rather a large number of permutations to consider.
With default firmware selection
* <os/>
=> Historic default, no change
* <os>
<loader stateless='yes'/>
</os>
=> Explicit version of historic default, no change
* <os>
<loader stateless='no'/>
</os>
=> Invalid, bios is always stateless
With manual legacy BIOS selection
* <os>
<loader>/path/to/seabios</loader>
...
</os>
=> Historic default, no change
* <os>
<loader stateless='yes'>/path/to/seabios</loader>
...
</os>
=> Explicit version of historic default, no change
* <os>
<loader stateless='no'>/path/to/seabios</loader>
...
</os>
=> Invalid, bios is always stateless
With manual UEFI selection
* <os>
<loader type='pflash'>/path/to/edk2</loader>
...
</os>
=> Historic default, no change
* <os>
<loader type='pflash' stateless='yes'>/path/to/edk2</loader>
...
</os>
=> Skip auto-filling NVRAM / template
* <os>
<loader type='pflash' stateless='no'>/path/to/edk2</loader>
...
</os>
=> Explicit version of historic default, no change
With automatic firmware selection
* <os firmware='bios'/>
=> Historic default, no change
* <os firmware='bios'>
<loader stateless='yes'/>
</os>
=> Explicit version of historic default, no change
* <os firmware='bios'>
<loader stateless='no'/>
</os>
=> Invalid, bios is always stateless
* <os firmware='uefi'/>
=> Historic default, no change
* <os firmware='uefi'>
<loader stateless='yes'/>
</os>
=> Skip auto-filling NVRAM / template
* <os firmware='uefi'>
<loader stateless='no'/>
</os>
=> Explicit version of historic default, no change
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
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| .. | ||
| schemas | ||
| backup_conf.c | ||
| backup_conf.h | ||
| capabilities.c | ||
| capabilities.h | ||
| checkpoint_conf.c | ||
| checkpoint_conf.h | ||
| cpu_conf.c | ||
| cpu_conf.h | ||
| device_conf.c | ||
| device_conf.h | ||
| domain_addr.c | ||
| domain_addr.h | ||
| domain_audit.c | ||
| domain_audit.h | ||
| domain_capabilities.c | ||
| domain_capabilities.h | ||
| domain_conf.c | ||
| domain_conf.h | ||
| domain_event.c | ||
| domain_event.h | ||
| domain_nwfilter.c | ||
| domain_nwfilter.h | ||
| domain_postparse.c | ||
| domain_postparse.h | ||
| domain_validate.c | ||
| domain_validate.h | ||
| interface_conf.c | ||
| interface_conf.h | ||
| meson.build | ||
| moment_conf.c | ||
| moment_conf.h | ||
| netdev_bandwidth_conf.c | ||
| netdev_bandwidth_conf.h | ||
| netdev_vlan_conf.c | ||
| netdev_vlan_conf.h | ||
| netdev_vport_profile_conf.c | ||
| netdev_vport_profile_conf.h | ||
| network_conf.c | ||
| network_conf.h | ||
| network_event.c | ||
| network_event.h | ||
| networkcommon_conf.c | ||
| networkcommon_conf.h | ||
| node_device_conf.c | ||
| node_device_conf.h | ||
| node_device_event.c | ||
| node_device_event.h | ||
| node_device_util.c | ||
| node_device_util.h | ||
| numa_conf.c | ||
| numa_conf.h | ||
| nwfilter_conf.c | ||
| nwfilter_conf.h | ||
| nwfilter_ipaddrmap.c | ||
| nwfilter_ipaddrmap.h | ||
| nwfilter_params.c | ||
| nwfilter_params.h | ||
| object_event_private.h | ||
| object_event.c | ||
| object_event.h | ||
| secret_conf.c | ||
| secret_conf.h | ||
| secret_event.c | ||
| secret_event.h | ||
| snapshot_conf_priv.h | ||
| snapshot_conf.c | ||
| snapshot_conf.h | ||
| storage_adapter_conf.c | ||
| storage_adapter_conf.h | ||
| storage_capabilities.c | ||
| storage_capabilities.h | ||
| storage_conf.c | ||
| storage_conf.h | ||
| storage_encryption_conf.c | ||
| storage_encryption_conf.h | ||
| storage_event.c | ||
| storage_event.h | ||
| storage_source_conf.c | ||
| storage_source_conf.h | ||
| virchrdev.c | ||
| virchrdev.h | ||
| virconftypes.h | ||
| virdomaincheckpointobjlist.c | ||
| virdomaincheckpointobjlist.h | ||
| virdomainmomentobjlist.c | ||
| virdomainmomentobjlist.h | ||
| virdomainobjlist.c | ||
| virdomainobjlist.h | ||
| virdomainsnapshotobjlist.c | ||
| virdomainsnapshotobjlist.h | ||
| virinterfaceobj.c | ||
| virinterfaceobj.h | ||
| virnetworkobj.c | ||
| virnetworkobj.h | ||
| virnetworkportdef.c | ||
| virnetworkportdef.h | ||
| virnodedeviceobj.c | ||
| virnodedeviceobj.h | ||
| virnwfilterbindingdef.c | ||
| virnwfilterbindingdef.h | ||
| virnwfilterbindingobj.c | ||
| virnwfilterbindingobj.h | ||
| virnwfilterbindingobjlist.c | ||
| virnwfilterbindingobjlist.h | ||
| virnwfilterobj.c | ||
| virnwfilterobj.h | ||
| virsavecookie.c | ||
| virsavecookie.h | ||
| virsecretobj.c | ||
| virsecretobj.h | ||
| virstorageobj.c | ||
| virstorageobj.h | ||