From: Paolo Bonzini <pbonzini@redhat.com>
To: "Liang, Kan" <kan.liang@intel.com>,
Peter Zijlstra <peterz@infradead.org>
Cc: "andi@firstfloor.org" <andi@firstfloor.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>
Subject: Re: [PATCH V5 1/2] perf ignore LBR and extra_regs
Date: Mon, 14 Jul 2014 15:40:11 +0200 [thread overview]
Message-ID: <53C3DDBB.2000304@redhat.com> (raw)
In-Reply-To: <37D7C6CF3E00A74B8858931C1DB2F077014E1A91@SHSMSX103.ccr.corp.intel.com>
Il 14/07/2014 15:36, Liang, Kan ha scritto:
>> > Kan Liang, what happens if CONFIG_PARAVIRT=y? Do you get garbage or
>> > just no events reported?
>> >
> Guest rdmsr/wrmsr will eventually call rdmsr_safe/wrmsr_safe. They will handle the #GP. So there is no error report in guest.
Yeah, but what's the effect on the output of perf?
Paolo
next prev parent reply other threads:[~2014-07-14 13:40 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-10 10:59 [PATCH V5 1/2] perf ignore LBR and extra_regs kan.liang
2014-07-10 10:59 ` [PATCH V5 2/2] kvm: ignore LBR and extra_reg kan.liang
2014-07-14 10:53 ` [PATCH V5 1/2] perf ignore LBR and extra_regs Peter Zijlstra
2014-07-14 14:28 ` Liang, Kan
2014-07-14 16:28 ` Peter Zijlstra
2014-07-14 11:08 ` Peter Zijlstra
2014-07-14 11:55 ` Paolo Bonzini
2014-07-14 12:09 ` Peter Zijlstra
2014-07-14 12:40 ` Paolo Bonzini
2014-07-14 12:48 ` Peter Zijlstra
2014-07-14 13:47 ` Paolo Bonzini
2014-07-14 13:36 ` Liang, Kan
2014-07-14 13:40 ` Paolo Bonzini [this message]
2014-07-14 13:44 ` Liang, Kan
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