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qemu: substitute missing model name for host-passthrough

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Before:
  $ uname -m
  s390x
  $ cat passthrough-cpu.xml
  <cpu check="none" mode="host-passthrough" />
  $ virsh hypervisor-cpu-compare passthrough-cpu.xml
  error: Failed to compare hypervisor CPU with passthrough-cpu.xml
  error: internal error: unable to execute QEMU command 'query-cpu-model-comp
  arison': Invalid parameter type for 'modelb.name', expected: string

After:
  $ virsh hypervisor-cpu-compare passthrough-cpu.xml
  CPU described in passthrough-cpu.xml is identical to the CPU provided by hy
  pervisor on the host

Signed-off-by: Tim Wiederhake <twiederh@redhat.com>
Signed-off-by: Collin Walling <walling@linux.ibm.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
This commit is contained in:
Collin Walling 2020-09-23 09:26:58 +02:00 committed by Jiri Denemark
parent eec19514ff
commit 9c6996124f
1 changed files with 9 additions and 0 deletions
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9
src/qemu/qemu_driver.c
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@ -12336,6 +12336,15 @@ qemuConnectCompareHypervisorCPU(virConnectPtr conn,
if (virCPUDefParseXMLString(xmlCPU, VIR_CPU_TYPE_AUTO, &cpu) < 0)
goto cleanup;
if (!cpu->model) {
if (cpu->mode == VIR_CPU_MODE_HOST_PASSTHROUGH) {
cpu->model = g_strdup("host");
} else {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("cpu parameter is missing a model name"));
goto cleanup;
}
}
ret = qemuConnectCPUModelComparison(qemuCaps, cfg->libDir,
cfg->user, cfg->group,
hvCPU, cpu, failIncompatible);