Re: [libvirt] [PATCH v2] qemu: Allow to attach/detach controller device persistently

* src/conf/domain_conf.c: - Add virDomainControllerFind to find controller device by type and index. - Add virDomainControllerRemove to remove the controller device from maintained controler list.

* src/conf/domain_conf.h: - Declare the two new helpers. * src/libvirt_private.syms: - Expose private symbols for the two new helpers. * src/qemu/qemu_driver.c: - Support attach/detach controller device persistently * src/qemu/qemu_hotplug.c: - Use the two helpers to simplify the codes. v1 - v2: - Allow to detach the controller too. +virDomainControllerDefPtr +virDomainControllerRemove(virDomainDefPtr def, size_t i) +{ + virDomainControllerDefPtr controller = def->controllers[i]; + + if (def->ncontrollers > 1) { + memmove(def->controllers + i, + def->controllers + i + 1, + sizeof(*def->controllers) * + (def->ncontrollers - (i + 1))); + def->ncontrollers--; + if (VIR_REALLOC_N(def->controllers, def->ncontrollers) < 0) { + /* ignore, harmless */