On Wed, Jan 31, 2018 at 12:44:41PM -0200, Eduardo Habkost wrote: > Also, if anybody don't like it, users can already specify, e.g., > "Broadwell,-hle,-rtm" or "Skylake,+spec_ctrl". > > QEMU only adds have the -noTSX and -IBRS CPU for convenience of > management systems that don't know how to check/configure > individual CPU features. We're working with libvirt and > OpenStack folks to make this kind of trick unnecessary. Yeah, defining separate CPU models just for that seems hacky. The +/-<feature> specification looks like the Right Thing(tm) to do. -- Regards/Gruss, Boris. SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg) --