linux-kernel - Re: [PATCH v3 0/5] Guest LBR Enabling

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Message-ID: <5BA39461.8020907@intel.com>
Date:   Thu, 20 Sep 2018 20:36:49 +0800
From:   Wei Wang <wei.w.wang@...el.com>
To:     "Gonglei (Arei)" <arei.gonglei@...wei.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
        "pbonzini@...hat.com" <pbonzini@...hat.com>,
        "ak@...ux.intel.com" <ak@...ux.intel.com>
CC:     "kan.liang@...el.com" <kan.liang@...el.com>,
        "peterz@...radead.org" <peterz@...radead.org>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "rkrcmar@...hat.com" <rkrcmar@...hat.com>,
        "like.xu@...el.com" <like.xu@...el.com>,
        "jannh@...gle.com" <jannh@...gle.com>
Subject: Re: [PATCH v3 0/5] Guest LBR Enabling

On 09/20/2018 07:34 PM, Gonglei (Arei) wrote:
>> -----Original Message-----
>> From: kvm-owner@...r.kernel.org [mailto:kvm-owner@...r.kernel.org] On
>> Behalf Of Wei Wang
>> Sent: Thursday, September 20, 2018 6:06 PM
>> To: linux-kernel@...r.kernel.org; kvm@...r.kernel.org; pbonzini@...hat.com;
>> ak@...ux.intel.com
>> Cc: kan.liang@...el.com; peterz@...radead.org; mingo@...hat.com;
>> rkrcmar@...hat.com; like.xu@...el.com; wei.w.wang@...el.com;
>> jannh@...gle.com; Gonglei (Arei) <arei.gonglei@...wei.com>
>> Subject: [PATCH v3 0/5] Guest LBR Enabling
>>
>> Last Branch Recording (LBR) is a performance monitor unit (PMU) feature
>> on Intel CPUs that captures branch related info. This patch series enables
>> this feature to KVM guests.
>>
>> Here is a conclusion of the fundamental methods that we use:
>> 1) the LBR feature is enabled per guest via QEMU setting of
>>     KVM_CAP_X86_GUEST_LBR;
> Did you send the QEMU parts for guest LBR support?
>

Not yet. Probably next week for the QEMU part.

Best,
Wei