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conf: domcaps: Add 'backingStoreInput' domain capability

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Historically we've only supported the <backingStore> as an output-only
element for domain disks. The documentation states that it may become
supported on input. To allow management apps detectin once that happens
add a domain capability which will be asserted if the hypervisor driver
will be able to obey the <backingStore> as configured on input.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
This commit is contained in:
Peter Krempa 2019-10-30 16:54:56 +01:00
parent eef089db78
commit 757203ee52
4 changed files with 19 additions and 0 deletions
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8
docs/formatdomaincaps.html.in
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@ -516,6 +516,7 @@
&lt;/gic&gt; &lt;/gic&gt;
&lt;vmcoreinfo supported='yes'/&gt; &lt;vmcoreinfo supported='yes'/&gt;
&lt;genid supported='yes'/&gt; &lt;genid supported='yes'/&gt;
&lt;backingStoreInput supported='yes'/&gt;
&lt;sev&gt; &lt;sev&gt;
&lt;cbitpos&gt;47&lt;/cbitpos&gt; &lt;cbitpos&gt;47&lt;/cbitpos&gt;
&lt;reduced-phys-bits&gt;1&lt;/reduced-phys-bits&gt; &lt;reduced-phys-bits&gt;1&lt;/reduced-phys-bits&gt;
@ -552,6 +553,13 @@
<p>Reports whether the genid feature can be used by the domain.</p> <p>Reports whether the genid feature can be used by the domain.</p>
<h4><a id="featureBackingStoreInput">backingStoreInput</a></h4>
<p>Reports whether the hypervisor will obey the &lt;backingStore&gt;
elements configured for a &lt;disk&gt; when booting the guest, hotplugging
the disk to a running guest, or similar.
</p>
<h4><a id="elementsSEV">SEV capabilities</a></h4> <h4><a id="elementsSEV">SEV capabilities</a></h4>
<p>AMD Secure Encrypted Virtualization (SEV) capabilities are exposed under <p>AMD Secure Encrypted Virtualization (SEV) capabilities are exposed under

9
docs/schemas/domaincaps.rng
View File

@ -207,6 +207,9 @@
<optional> <optional>
<ref name='vmgenid'/> <ref name='vmgenid'/>
</optional> </optional>
<optional>
<ref name='backingStoreInput'/>
</optional>
<optional> <optional>
<ref name='sev'/> <ref name='sev'/>
</optional> </optional>
@ -232,6 +235,12 @@
</element> </element>
</define> </define>
<define name='backingStoreInput'>
<element name='backingStoreInput'>
<ref name='supported'/>
</element>
</define>
<define name='sev'> <define name='sev'>
<element name='sev'> <element name='sev'>
<ref name='supported'/> <ref name='supported'/>

1
src/conf/domain_capabilities.c
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@ -40,6 +40,7 @@ VIR_ENUM_IMPL(virDomainCapsFeature,
"iothreads", "iothreads",
"vmcoreinfo", "vmcoreinfo",
"genid", "genid",
"backingStoreInput",
); );
static virClassPtr virDomainCapsClass; static virClassPtr virDomainCapsClass;

1
src/conf/domain_capabilities.h
View File

@ -162,6 +162,7 @@ typedef enum {
VIR_DOMAIN_CAPS_FEATURE_IOTHREADS = 0, VIR_DOMAIN_CAPS_FEATURE_IOTHREADS = 0,
VIR_DOMAIN_CAPS_FEATURE_VMCOREINFO, VIR_DOMAIN_CAPS_FEATURE_VMCOREINFO,
VIR_DOMAIN_CAPS_FEATURE_GENID, VIR_DOMAIN_CAPS_FEATURE_GENID,
VIR_DOMAIN_CAPS_FEATURE_BACKING_STORE_INPUT,
VIR_DOMAIN_CAPS_FEATURE_LAST VIR_DOMAIN_CAPS_FEATURE_LAST
} virDomainCapsFeature; } virDomainCapsFeature;