Re: [PATCH 2/6] kvm: x86: drop read_tsc_offset()

From: Paolo Bonzini
Date: Tue Sep 20 2016 - 01:37:57 EST

On 20/09/2016 00:18, Jim Mattson wrote:
> Hmmm. Yes, I think it does. With this patch series,
> vcpu->arch.tsc_offset appears to contain L1's TSC offset (perhaps
> making vmx->nested.vmcs01_tsc_offset redundant).
> However, this unfortunately limits the newly added functionality to
> merging host and *L1* guest traces. It doesn't work with L2 (or
> deeper) guests. Or perhaps I'm missing something?

You can merge L1/L2 first and then host/L1.