"Xu, Like" <like.xu@xxxxxxxxx> writes: > On 2020/6/19 17:40, Vitaly Kuznetsov wrote: >> Guest crashes are observed on a Cascade Lake system when 'perf top' is >> launched on the host, e.g. > Interesting, is it specific to Cascade Lake? > Actually no, just reproduced this on a Haswell system. If you run the guest with "-cpu host,-pmu" and do 'perf top' (on the host) the guest crashes immediately. > Would you mind sharing the output of > "cpuid -r -l 1 -1" and "cat /proc/cpuinfo| grep microcode | uniq" with us ? Sure (this is probably unrelated because the issue also reproduces on Haswell but still): # cpuid -r -l 1 -1 CPU: 0x00000001 0x00: eax=0x00050657 ebx=0x03200800 ecx=0x7ffefbff edx=0xbfebfbff # cat /proc/cpuinfo| grep microcode | uniq microcode : 0x500002c This is "Intel(R) Xeon(R) Gold 5218 CPU @ 2.30GHz" -- Vitaly
