From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Gleb Natapov <gleb@redhat.com>
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
avi@redhat.com, mtosatti@redhat.com, mingo@elte.hu,
acme@ghostprotocols.net
Subject: Re: [PATCHv3 06/10] x86, perf: disable non available architectural events.
Date: Thu, 17 Nov 2011 10:29:34 +0100 [thread overview]
Message-ID: <1321522174.27735.26.camel@twins> (raw)
In-Reply-To: <1320929850-10480-7-git-send-email-gleb@redhat.com>
On Thu, 2011-11-10 at 14:57 +0200, Gleb Natapov wrote:
> +
> + /* disable event that reported as not presend by cpuid */
> + for_each_set_bit(bit, x86_pmu.events_mask,
> + min(x86_pmu.events_mask_len, x86_pmu.max_events))
> + intel_perfmon_event_map[intel_event_id_to_hw_id[bit]] = 0;
I think that should read:
for_each_set_bit(bit, x86_pmu.events_mask, ARRAY_SIZE(intel_event_id_to_hw_id))
intel_perfmon_event_map[intel_event_id_to_hw_id[bit]] = 0;
There is no guarantee x86_pmu.max_events has any relation to the size of
intel_event_id_to_hw_id.
Changed it for you.
next prev parent reply other threads:[~2011-11-17 9:29 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-10 12:57 [PATCHv3 00/10] KVM in-guest performance monitoring Gleb Natapov
2011-11-10 12:57 ` [PATCHv3 01/10] KVM: Expose kvm_lapic_local_deliver() Gleb Natapov
2011-11-10 12:57 ` [PATCHv3 02/10] KVM: Expose a version 2 architectural PMU to a guests Gleb Natapov
2011-11-10 12:57 ` [PATCHv3 03/10] KVM: Add generic RDPMC support Gleb Natapov
2011-11-10 12:57 ` [PATCHv3 04/10] KVM: SVM: Intercept RDPMC Gleb Natapov
2011-11-10 12:57 ` [PATCHv3 05/10] KVM: VMX: " Gleb Natapov
2011-11-10 12:57 ` [PATCHv3 06/10] x86, perf: disable non available architectural events Gleb Natapov
2011-11-17 9:29 ` Peter Zijlstra [this message]
2011-11-10 12:57 ` [PATCHv3 07/10] perf, x86: expose perf capability to other modules Gleb Natapov
2011-11-10 12:57 ` [PATCHv3 08/10] KVM: Expose the architectural performance monitoring CPUID leaf Gleb Natapov
2011-11-10 12:57 ` [PATCHv3 09/10] KVM: x86 emulator: fix RDPMC privilege check Gleb Natapov
2011-11-10 12:57 ` [PATCHv3 10/10] KVM: x86 emulator: implement RDPMC (0F 33) Gleb Natapov
2011-11-17 9:30 ` [PATCHv3 00/10] KVM in-guest performance monitoring Peter Zijlstra
2011-12-11 14:05 ` Avi Kivity
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