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cpu: Modify virCPUarmCompare to perform compare actions

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Modify virCPUarmCompare in cpu_arm.c to perform compare action.
This patch only adds host to host CPU compare, the rest cases
remains the same. This is useful for source and destination host
compare during migrations to avoid migration between different
CPU models that have different CPU freatures.

Signed-off-by: Zhenyu Zheng <zheng.zhenyu@outlook.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This commit is contained in:
Zhenyu Zheng 2020-09-24 22:12:21 +08:00 committed by Michal Privoznik
parent 95bcb97289
commit c640f382eb
1 changed files with 36 additions and 3 deletions
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39
src/cpu/cpu_arm.c
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@ -463,10 +463,43 @@ virCPUarmBaseline(virCPUDefPtr *cpus,
} }
static virCPUCompareResult static virCPUCompareResult
virCPUarmCompare(virCPUDefPtr host G_GNUC_UNUSED, virCPUarmCompare(virCPUDefPtr host,
virCPUDefPtr cpu G_GNUC_UNUSED, virCPUDefPtr cpu,
bool failMessages G_GNUC_UNUSED) bool failIncompatible)
{ {
/* Only support host to host CPU compare for ARM */
if (cpu->type != VIR_CPU_TYPE_HOST)
return VIR_CPU_COMPARE_IDENTICAL;
if (!host || !host->model) {
if (failIncompatible) {
virReportError(VIR_ERR_CPU_INCOMPATIBLE, "%s",
_("unknown host CPU"));
return VIR_CPU_COMPARE_ERROR;
}
VIR_WARN("unknown host CPU");
return VIR_CPU_COMPARE_INCOMPATIBLE;
}
/* Compare vendor and model to check if CPUs are identical */
if (STRNEQ_NULLABLE(host->vendor, cpu->vendor) ||
STRNEQ_NULLABLE(host->model, cpu->model)) {
VIR_DEBUG("Host CPU model does not match required CPU "
"vendor %s or(and) model %s",
NULLSTR(cpu->vendor), NULLSTR(cpu->model));
if (failIncompatible) {
virReportError(VIR_ERR_CPU_INCOMPATIBLE,
_("Host CPU model does not match required CPU "
"vendor %s or(and) model %s"),
NULLSTR(cpu->vendor), NULLSTR(cpu->model));
return VIR_CPU_COMPARE_ERROR;
}
return VIR_CPU_COMPARE_INCOMPATIBLE;
}
return VIR_CPU_COMPARE_IDENTICAL; return VIR_CPU_COMPARE_IDENTICAL;
} }