[libvirt] [PATCH v3 44/52] qemu: Introduce virQEMUCapsGetMachineDefaultCPU

Signed-off-by: Jiri Denemark <jdenemar(a)redhat.com&gt; Reviewed-by: Ján Tomko <jtomko(a)redhat.com&gt; --- Notes: Version 2: - fix crash with CPUs without type Version 3: - no change src/qemu/qemu_capabilities.c | 32 ++++++++++++++++++++++++++++++++ src/qemu/qemu_capabilities.h | 3 +++ 2 files changed, 35 insertions(+) diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c index dc2723d025..9829860d4d 100644 --- a/src/qemu/qemu_capabilities.c +++ b/src/qemu/qemu_capabilities.c @@ -2195,6 +2195,38 @@ virQEMUCapsGetMachineHotplugCpus(virQEMUCapsPtr qemuCaps, } +const char * +virQEMUCapsGetMachineDefaultCPU(virQEMUCapsPtr qemuCaps, + const char *name, + virDomainVirtType type) +{ + virQEMUCapsAccelPtr accel = virQEMUCapsGetAccel(qemuCaps, type); + qemuMonitorCPUDefsPtr defs = accel->cpuModels; + const char *cpuType = NULL; + size_t i; + + if (!name || !defs) + return NULL; + + for (i = 0; i < accel->nmachineTypes; i++) { + if (STREQ(accel->machineTypes[i].name, name)) { + cpuType = accel->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 bc43b99579..f063d95048 100644 --- a/src/qemu/qemu_capabilities.h +++ b/src/qemu/qemu_capabilities.h @@ -609,6 +609,9 @@ int virQEMUCapsGetMachineMaxCpus(virQEMUCapsPtr qemuCaps, bool virQEMUCapsGetMachineHotplugCpus(virQEMUCapsPtr qemuCaps, virDomainVirtType virtType, const char *name); +const char *virQEMUCapsGetMachineDefaultCPU(virQEMUCapsPtr qemuCaps, + const char *name, + virDomainVirtType type); void virQEMUCapsFilterByMachineType(virQEMUCapsPtr qemuCaps, virDomainVirtType virtType, -- 2.23.0