Re: [libvirt] [PATCH] qemu: Allow cachetune only for KVM domains

https://bugzilla.redhat.com/show_bug.cgi?id=1541921 In TCG mode, there are no vCPU threads and thus there's nothing to be placed into resctrl CGroup. Forbid such configuration.

Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com&gt; --- src/qemu/qemu_domain.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c index fee44812c1..a39d9a46a0 100644 --- a/src/qemu/qemu_domain.c +++ b/src/qemu/qemu_domain.c @@ -3980,6 +3980,13 @@ qemuDomainDefValidate(const virDomainDef *def, } } + if (def->ncachetunes && + def->virtType != VIR_DOMAIN_VIRT_KVM) { + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", + _("cachetune is only supported for KVM domains")); + goto cleanup; + } + if (qemuDomainDefValidateFeatures(def, qemuCaps) < 0) goto cleanup;