> Am 08.01.2018 um 19:58 schrieb Stefan Priebe - Profihost AG > <s.pri...@profihost.ag>: > > Hello, > > for meltdown mitigation and performance it's important to have the pcid > flag passed down to the guest (f.e. > https://groups.google.com/forum/m/#!topic/mechanical-sympathy/L9mHTbeQLNU). > > My host shows the flag: > # grep ' pcid ' /proc/cpuinfo | wc -l > 56 > > But the guest does not: > # grep pcid /proc/cpuinfo > # > > Guest was started with: > -cpu IvyBridge,+kvm_pv_unhalt,+kvm_pv_eoi,enforce,vendor=GenuineIntel
$ qemu -cpu help gives a overview. +pcid should do it. > > Qemu is 2.9.1 > > Thanks! > > Greets, > Stefan >
