linux-kernel - Re: [PATCH 4/4] kvm: x86: export TSC offset to user-space

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Message-ID: <20160902122919.379ea6b8@redhat.com>
Date:   Fri, 2 Sep 2016 12:29:19 -0400
From:   Luiz Capitulino <lcapitulino@...hat.com>
To:     Stefan Hajnoczi <stefanha@...il.com>
Cc:     kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
        pbonzini@...hat.com, rkrcmar@...hat.com, rostedt@...dmis.org,
        mhiramat@...nel.org, mtosatti@...hat.com
Subject: Re: [PATCH 4/4] kvm: x86: export TSC offset to user-space

On Fri, 2 Sep 2016 12:26:55 -0400
Luiz Capitulino <lcapitulino@...hat.com> wrote:

> I guess that what tools like trace-cmd want to do in those cases
> is to warn the user and discard the trace. A simple way of doing
> this would be to re-check that the TSC offset are the same after
> tracing is done. It could also use inotify, in case it works
> for debugfs (never tried it myself).

The second idea was probably stupid, never mind me :)