linux-kernel - Re: [PATCH 1/2] x86: notify hypervisor about guest entering s2idle state

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Message-ID: <7eb5313e-dea0-c73e-5467-d01f0ca0fc2d@amd.com>
Date:   Mon, 13 Jun 2022 00:03:55 -0500
From:   Mario Limonciello <mario.limonciello@....com>
To:     Dave Hansen <dave.hansen@...el.com>,
        Grzegorz Jaszczyk <jaz@...ihalf.com>
Cc:     linux-kernel@...r.kernel.org, Dmytro Maluka <dmy@...ihalf.com>,
        Zide Chen <zide.chen@...el.corp-partner.google.com>,
        Peter Fang <peter.fang@...el.corp-partner.google.com>,
        Tomasz Nowicki <tn@...ihalf.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Jonathan Corbet <corbet@....net>,
        Sean Christopherson <seanjc@...gle.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>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" <x86@...nel.org>,
        "H. Peter Anvin" <hpa@...or.com>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Len Brown <lenb@...nel.org>, Pavel Machek <pavel@....cz>,
        Brijesh Singh <brijesh.singh@....com>,
        Ashish Kalra <ashish.kalra@....com>,
        Pratik Vishwakarma <Pratik.Vishwakarma@....com>,
        Hans de Goede <hdegoede@...hat.com>,
        Sachi King <nakato@...ato.io>,
        Arnaldo Carvalho de Melo <acme@...hat.com>,
        David Dunn <daviddunn@...gle.com>,
        Wei Wang <wei.w.wang@...el.com>,
        Nicholas Piggin <npiggin@...il.com>,
        "open list:KERNEL VIRTUAL MACHINE (KVM)" <kvm@...r.kernel.org>,
        "open list:DOCUMENTATION" <linux-doc@...r.kernel.org>,
        "open list:ACPI" <linux-acpi@...r.kernel.org>,
        "open list:HIBERNATION (aka Software Suspend, aka swsusp)" 
        <linux-pm@...r.kernel.org>
Subject: Re: [PATCH 1/2] x86: notify hypervisor about guest entering s2idle
 state

On 6/10/22 07:49, Dave Hansen wrote:
> On 6/10/22 04:36, Grzegorz Jaszczyk wrote:
>> czw., 9 cze 2022 o 16:27 Dave Hansen <dave.hansen@...el.com> napisał(a):
>>> On 6/9/22 04:03, Grzegorz Jaszczyk wrote:
>>>> Co-developed-by: Peter Fang <peter.fang@...el.corp-partner.google.com>
>>>> Signed-off-by: Peter Fang <peter.fang@...el.corp-partner.google.com>
>>>> Co-developed-by: Tomasz Nowicki <tn@...ihalf.com>
>>>> Signed-off-by: Tomasz Nowicki <tn@...ihalf.com>
>>>> Signed-off-by: Zide Chen <zide.chen@...el.corp-partner.google.com>
>>>> Co-developed-by: Grzegorz Jaszczyk <jaz@...ihalf.com>
>>>> Signed-off-by: Grzegorz Jaszczyk <jaz@...ihalf.com>
>>>> ---
>>>>   Documentation/virt/kvm/x86/hypercalls.rst | 7 +++++++
>>>>   arch/x86/kvm/x86.c                        | 3 +++
>>>>   drivers/acpi/x86/s2idle.c                 | 8 ++++++++
>>>>   include/linux/suspend.h                   | 1 +
>>>>   include/uapi/linux/kvm_para.h             | 1 +
>>>>   kernel/power/suspend.c                    | 4 ++++
>>>>   6 files changed, 24 insertions(+)
>>> What's the deal with these emails?
>>>
>>>          zide.chen@...el.corp-partner.google.com
>>>
>>> I see a smattering of those in the git logs, but never for Intel folks.
>> I've kept emails as they were in the original patch and I do not think
>> I should change them. This is what Zide and Peter originally used.
> 
> "Original patch"?  Where did you get this from?

Is this perhaps coming from Chromium Gerrit?  If so, I think you should 
include a link to the Gerrit code review discussion.

If it's not a public discussion/patch originally perhaps Suggested-by: 
might be a better tag to use.

> 
>>> I'll also say that I'm a bit suspicious of a patch that includes 5
>>> authors for 24 lines of code.  Did it really take five of you to write
>>> 24 lines of code?
>> This patch was built iteratively: original patch comes from Zide and
>> Peter, I've squashed it with Tomasz later changes and reworked by
>> myself for upstream. I didn't want to take credentials from any of the
>> above so ended up with Zide as an author and 3 co-developers. Please
>> let me know if that's an issue.
> 
> It just looks awfully fishy.
> 
> If it were me, and I'd put enough work into it to believe I deserved
> credit as an *author* (again, of ~13 lines of actual code), I'd probably
> just zap all the other SoB's and mention them in the changelog.  I'd
> also explain where the code came from.
> 
> Your text above wouldn't be horrible context to add to a cover letter.