[libvirt] [PATCH v2 23/31] qemu: Introduce virQEMUCapsGetMachineDefaultCPU

Signed-off-by: Jiri Denemark <jdenemar(a)redhat.com&gt; --- Notes: Version 2: - fix crash with CPUs without type src/qemu/qemu_capabilities.c | 36 ++++++++++++++++++++++++++++++++++++ src/qemu/qemu_capabilities.h | 3 +++ 2 files changed, 39 insertions(+) diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c index 33cd3491b2..dd7ea9ae86 100644 --- a/src/qemu/qemu_capabilities.c +++ b/src/qemu/qemu_capabilities.c @@ -2179,6 +2179,42 @@ bool virQEMUCapsGetMachineHotplugCpus(virQEMUCapsPtr qemuCaps, } +const char * +virQEMUCapsGetMachineDefaultCPU(virQEMUCapsPtr qemuCaps, + const char *name, + virDomainVirtType type) +{ + qemuMonitorCPUDefsPtr defs; + const char *cpuType = NULL; + size_t i; + + if (type == VIR_DOMAIN_VIRT_KVM) + defs = qemuCaps->kvmCPUModels; + else + defs = qemuCaps->tcgCPUModels; + + if (!name || !defs) + return NULL; + + for (i = 0; i < qemuCaps->nmachineTypes; i++) { + if (STREQ(qemuCaps->machineTypes[i].name, name)) { + cpuType = qemuCaps->machineTypes[i].defaultCPU; + break; + } + } + + if (!cpuType) + return NULL; + + for (i = 0; i < defs->ncpus; i++) { + if (STREQ_NULLABLE(defs->cpus[i].type, cpuType)) + return defs->cpus[i].name; + } + + return NULL; +} + + /** * virQEMUCapsSetGICCapabilities: * @qemuCaps: QEMU capabilities diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h index 923706c3bf..f5133d083d 100644 --- a/src/qemu/qemu_capabilities.h +++ b/src/qemu/qemu_capabilities.h @@ -607,6 +607,9 @@ int virQEMUCapsGetMachineMaxCpus(virQEMUCapsPtr qemuCaps, const char *name); bool virQEMUCapsGetMachineHotplugCpus(virQEMUCapsPtr qemuCaps, const char *name); +const char *virQEMUCapsGetMachineDefaultCPU(virQEMUCapsPtr qemuCaps, + const char *name, + virDomainVirtType type); int virQEMUCapsGetMachineTypesCaps(virQEMUCapsPtr qemuCaps, size_t *nmachines, virCapsGuestMachinePtr **machines); -- 2.23.0