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SubjectRe: [PATCH v9 06/12] KVM: x86: Add Intel Processor Trace virtualization mode
On Tue, May 22, 2018 at 12:52:09PM +0800, Luwei Kang wrote:
> From: Chao Peng <>
> Intel PT virtualization can be work in one of 2 possible modes:
> a. system-wide: trace both host and guest and output to host buffer;
> b. host-guest: trace host/guest simultaneous and output to their
> respective buffer.

I think we discussed this before. That's not the choice that the user
needs to make. The only choice that I see is what happens if the guest
wants to use PT while it's already in use by the host. Otherwise, each
of them gets to use PT as they would.


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