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conf: validate IOMMU interrupt remapping setting

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This option requires:
  <ioapic driver='qemu'/>

Report an error in case someone tries to combine
it with different ioapic setting.

Setting 'eim' on without enabling 'intremap' does not make sense.

https://bugzilla.redhat.com/show_bug.cgi?id=1457610
This commit is contained in:
Ján Tomko 2017-08-23 19:15:06 +02:00
parent 190a5bc127
commit 90cd99a42e
1 changed files with 18 additions and 0 deletions
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18
src/conf/domain_conf.c
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@ -5575,6 +5575,24 @@ virDomainDefValidateInternal(const virDomainDef *def)
if (virDomainDefGetVcpusTopology(def, NULL) < 0)
return -1;
if (def->iommu &&
def->iommu->intremap == VIR_TRISTATE_SWITCH_ON &&
(def->features[VIR_DOMAIN_FEATURE_IOAPIC] != VIR_TRISTATE_SWITCH_ON ||
def->ioapic != VIR_DOMAIN_IOAPIC_QEMU)) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("IOMMU interrupt remapping requires split I/O APIC "
"(ioapic driver='qemu')"));
return -1;
}
if (def->iommu &&
def->iommu->eim == VIR_TRISTATE_SWITCH_ON &&
def->iommu->intremap != VIR_TRISTATE_SWITCH_ON) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("IOMMU eim requires interrupt remapping to be enabled"));
return -1;
}
return 0;
}