From: Steven Rostedt <rostedt@goodmis.org>
To: Tzvetomir Stoyanov <tz.stoyanov@gmail.com>
Cc: Dario Faggioli <dfaggioli@suse.com>,
Joel Fernandes <joelaf@google.com>,
"Yordan Karadzhov (VMware)" <y.karadz@gmail.com>,
Linux Trace Devel <linux-trace-devel@vger.kernel.org>
Subject: Re: Instructions for clock sync for tracing host/guest
Date: Mon, 26 Apr 2021 11:31:23 -0400 [thread overview]
Message-ID: <20210426113123.3aae06c4@gandalf.local.home> (raw)
In-Reply-To: <CAPpZLN7q_nQg8A65P4w3OjoN8GiujpCnYwjBJVYbWyLBkb1OHQ@mail.gmail.com>
On Mon, 26 Apr 2021 18:02:58 +0300
Tzvetomir Stoyanov <tz.stoyanov@gmail.com> wrote:
> > As it was thread 129042 that called kvm_entry, it's the thread that is
> > mapped to vcpu 0 of the guest we are tracing.
>
> For a complete mapping, some handshake logic should be implemented -
> to force the guest to use all its CPUs, and to ensure we have the
> mapping for each vCPU.
Don't we already run something on all threads? Or do we not do that for the
KVM sync?
> The other approach could be to look in /proc - the relation between
> KVM thread 129042 and the VM process is there.
What would you be looking for?
-- Steve
next prev parent reply other threads:[~2021-04-26 15:31 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
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2021-04-23 8:16 ` Instructions for clock sync for tracing host/guest Tzvetomir Stoyanov
[not found] ` <CAJWu+orjdLAdcUJKWj6f8gUtXUzBcvJEPeKjtVZ7P+EpiptF0w@mail.gmail.com>
2021-04-23 11:33 ` Steven Rostedt
2021-04-23 15:49 ` Joel Fernandes
2021-04-26 10:58 ` Tzvetomir Stoyanov
2021-04-26 12:44 ` Steven Rostedt
2021-04-26 12:59 ` Tzvetomir Stoyanov
2021-04-26 14:11 ` Dario Faggioli
2021-04-26 14:51 ` Steven Rostedt
2021-04-26 15:02 ` Tzvetomir Stoyanov
2021-04-26 15:31 ` Steven Rostedt [this message]
2021-04-26 15:37 ` Steven Rostedt
2021-04-26 15:44 ` Dario Faggioli
2021-04-26 15:38 ` Dario Faggioli
2021-04-26 15:50 ` Steven Rostedt
2021-04-26 16:10 ` Dario Faggioli
2021-04-25 18:29 ` Steven Rostedt
2021-04-26 10:39 ` Tzvetomir Stoyanov
2021-04-26 12:56 ` Steven Rostedt
2021-04-26 13:24 ` Dario Faggioli
2021-04-26 13:51 ` Tzvetomir Stoyanov
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