From: Peter Zijlstra <peterz@infradead.org>
To: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>,
Ingo Molnar <mingo@redhat.com>,
linux-kernel@vger.kernel.org, vince@deater.net,
eranian@google.com, Arnaldo Carvalho de Melo <acme@infradead.org>,
Borislav Petkov <bp@suse.de>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH 2/2] perf/x86/intel/pt: Fail event creation if VMX operation is on
Date: Wed, 15 Feb 2017 09:56:21 +0100 [thread overview]
Message-ID: <20170215085621.GQ25813@worktop.programming.kicks-ass.net> (raw)
In-Reply-To: <87poijkg25.fsf@ashishki-desk.ger.corp.intel.com>
On Wed, Feb 15, 2017 at 10:34:58AM +0200, Alexander Shishkin wrote:
> Well, we can't make the limitation go away. You'll still have to stop
> kvms to get any 'meaningful' PT data.
Why would you need to stop all VMs in order to get your !VM data? Sure,
you get black holes where the VM runs, but we should be able to see
everything else.
next prev parent reply other threads:[~2017-02-15 8:57 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-14 13:24 [PATCH 0/2] perf/x86/intel/pt: VMX related updates Alexander Shishkin
2017-02-14 13:24 ` [PATCH 1/2] perf/x86/intel/pt: Fail event scheduling on conflict with VMX Alexander Shishkin
2017-02-14 13:56 ` Peter Zijlstra
2017-02-14 16:17 ` Alexander Shishkin
2017-02-14 16:27 ` Peter Zijlstra
2017-02-14 17:21 ` Alexander Shishkin
2017-02-14 18:38 ` Peter Zijlstra
2017-02-14 19:48 ` Peter Zijlstra
2017-02-15 8:11 ` Alexander Shishkin
2017-02-15 8:53 ` Peter Zijlstra
2017-02-14 13:24 ` [PATCH 2/2] perf/x86/intel/pt: Fail event creation if VMX operation is on Alexander Shishkin
2017-02-14 14:02 ` Peter Zijlstra
2017-02-14 17:47 ` Arnaldo Carvalho de Melo
2017-02-15 8:34 ` Alexander Shishkin
2017-02-15 8:56 ` Peter Zijlstra [this message]
2017-02-15 13:05 ` Alexander Shishkin
2017-02-15 13:12 ` Arnaldo Carvalho de Melo
2017-02-15 13:37 ` Peter Zijlstra
2017-02-15 12:51 ` Arnaldo Carvalho de Melo
2017-02-15 13:09 ` Alexander Shishkin
2017-02-15 13:16 ` Arnaldo Carvalho de Melo
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