linux-kernel - Re: [PATCH v11 08/11] KVM: x86/pmu: Emulate LBR feature via guest LBR event

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Message-ID: <6ef6e9d0-d344-b482-4430-0d720b52ea7b@intel.com>
Date:   Tue, 19 May 2020 20:28:45 +0800
From:   "Xu, Like" <like.xu@...el.com>
To:     Peter Zijlstra <peterz@...radead.org>,
        Like Xu <like.xu@...ux.intel.com>
Cc:     Paolo Bonzini <pbonzini@...hat.com>, linux-kernel@...r.kernel.org,
        kvm@...r.kernel.org,
        Sean Christopherson <sean.j.christopherson@...el.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>,
        Thomas Gleixner <tglx@...utronix.de>, ak@...ux.intel.com,
        wei.w.wang@...el.com
Subject: Re: [PATCH v11 08/11] KVM: x86/pmu: Emulate LBR feature via guest LBR
 event

On 2020/5/19 19:01, Peter Zijlstra wrote:
> On Thu, May 14, 2020 at 04:30:51PM +0800, Like Xu wrote:
>
>> +	struct perf_event_attr attr = {
>> +		.type = PERF_TYPE_RAW,
>> +		.size = sizeof(attr),
>> +		.pinned = true,
>> +		.exclude_host = true,
>> +		.config = INTEL_FIXED_VLBR_EVENT,
>> +		.sample_type = PERF_SAMPLE_BRANCH_STACK,
>> +		.branch_sample_type = PERF_SAMPLE_BRANCH_CALL_STACK |
>> +					PERF_SAMPLE_BRANCH_USER,
> Maybe order the fields according to how they're declared in the
> structure?
Sure,  I'll sort the fields in the order of declaration. Thanks.
>> +	};