Re: [PATCH V7 00/18] KVM: x86/pmu: Add *basic* support to enable guest PEBS via DS

From: Liuxiangdong
Date: Sun Jul 11 2021 - 21:37:59 EST


Hi, Lingshan.

We can use basic pebs for KVM Guest on ICX by this patches set. Will we consider supporting "perf mem" for KVM Guest?

AFAIK, the load latency facility requires processor supporting PEBS. Besides, it needs MSR_PEBS_LD_LAT_THRESHOLD
msr (3F6H) to specify the desired latency threshold. How about passthrough this msr to Guest?

Thanks!
Xiangdong Liu