linux-kernel - Re: [PATCH v12 00/11] Guest Last Branch Recording Enabling

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Message-ID: <84a75c42-8a97-6771-9aab-3f9d3285486e@intel.com>
Date:   Fri, 3 Jul 2020 16:04:06 +0800
From:   "Xu, Like" <like.xu@...el.com>
To:     Peter Zijlstra <peterz@...radead.org>,
        Paolo Bonzini <pbonzini@...hat.com>
Cc:     "Liang, Kan" <kan.liang@...ux.intel.com>,
        Like Xu <like.xu@...ux.intel.com>,
        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>, ak@...ux.intel.com,
        wei.w.wang@...el.com, linux-kernel@...r.kernel.org,
        kvm@...r.kernel.org, "Liang, Kan" <kan.liang@...el.com>
Subject: Re: [PATCH v12 00/11] Guest Last Branch Recording Enabling

On 2020/7/3 15:56, Peter Zijlstra wrote:
> On Thu, Jul 02, 2020 at 03:58:42PM +0200, Peter Zijlstra wrote:
>> On Thu, Jul 02, 2020 at 09:11:06AM -0400, Liang, Kan wrote:
>>> On 7/2/2020 3:40 AM, Peter Zijlstra wrote:
>>>> On Sat, Jun 13, 2020 at 04:09:45PM +0800, Like Xu wrote:
>>>>> Like Xu (10):
>>>>>     perf/x86/core: Refactor hw->idx checks and cleanup
>>>>>     perf/x86/lbr: Add interface to get LBR information
>>>>>     perf/x86: Add constraint to create guest LBR event without hw counter
>>>>>     perf/x86: Keep LBR records unchanged in host context for guest usage
>>>>> Wei Wang (1):
>>>>>     perf/x86: Fix variable types for LBR registers
>>>>>    arch/x86/events/core.c            |  26 +--
>>>>>    arch/x86/events/intel/core.c      | 109 ++++++++-----
>>>>>    arch/x86/events/intel/lbr.c       |  51 +++++-
>>>>>    arch/x86/events/perf_event.h      |   8 +-
>>>>>    arch/x86/include/asm/perf_event.h |  34 +++-
>>>> These look good to me; but at the same time Kan is sending me
>>>> Architectural LBR patches.
>>>>
>>>> Kan, if I take these perf patches and stick them in a tip/perf/vlbr
>>>> topic branch, can you rebase the arch lbr stuff on top, or is there
>>>> anything in the arch-lbr series that badly conflicts with this work?
>>>>
>>> Yes, I can rebase the arch lbr patches on top of them.
>>> Please push the tip/perf/vlbr branch, so I can pull and rebase my patches.
>> For now I have:
>>
>>    git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git perf/vlbr
>>
>> Once the 0day robot comes back all-green, I'll push it out to
>> tip/perf/vlbr and merge it into tip/perf/core.
> tip/perf/vlbr now exists, thanks!
Hi Peter,

Thanks for your patience and professional support on this feature!

Thanks,
Like Xu