linux-kernel - Re: [RFC KERNEL PATCH v2 1/3] xen/pci: Add xen_reset_device

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Message-ID: <BL1PR12MB5849F70BA37B8612ACAE0127E785A@BL1PR12MB5849.namprd12.prod.outlook.com>
Date:   Tue, 5 Dec 2023 06:50:40 +0000
From:   "Chen, Jiqian" <Jiqian.Chen@....com>
To:     Stefano Stabellini <sstabellini@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>
CC:     Juergen Gross <jgross@...e.com>,
        Oleksandr Tyshchenko <oleksandr_tyshchenko@...m.com>,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Len Brown <lenb@...nel.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Roger Pau Monné <roger.pau@...rix.com>,
        "xen-devel@...ts.xenproject.org" <xen-devel@...ts.xenproject.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
        "Stabellini, Stefano" <stefano.stabellini@....com>,
        "Deucher, Alexander" <Alexander.Deucher@....com>,
        "Koenig, Christian" <Christian.Koenig@....com>,
        "Hildebrand, Stewart" <Stewart.Hildebrand@....com>,
        "Ragiadakou, Xenia" <Xenia.Ragiadakou@....com>,
        "Huang, Honglei1" <Honglei1.Huang@....com>,
        "Zhang, Julia" <Julia.Zhang@....com>,
        "Huang, Ray" <Ray.Huang@....com>,
        "Chen, Jiqian" <Jiqian.Chen@....com>
Subject: Re: [RFC KERNEL PATCH v2 1/3] xen/pci: Add xen_reset_device_state
 function

On 2023/12/5 05:31, Stefano Stabellini wrote:
> On Mon, 3 Dec 2023, Chen, Jiqian wrote:
>>>> vpci device state when device is reset on dom0 side.
>>>>
>>>> And call that function in pcistub_init_device. Because when
>>>> we use "pci-assignable-add" to assign a passthrough device in
>>>> Xen, it will reset passthrough device and the vpci state will
>>>> out of date, and then device will fail to restore bar state.
>>>>
>>>> Signed-off-by: Jiqian Chen <Jiqian.Chen@....com>
>>>> Signed-off-by: Huang Rui <ray.huang@....com>
>>>
>>> This Signed-off-by chain is incorrect.
>>>
>>> Documentation/process/submitting-patches.rst has a full chapter about
>>> S-O-B and the correct usage.
>> I am the author of this series of patches, and Huang Rui transported the v1 to upstream. And now I transport v2. I am not aware that the SOB chain is incorrect.
>> Do you have any suggestions?
> 
> I think he means that your Signed-off-by should be the second one of the
> two as you are the one submitting the patch to the LKML
Got it. Thanks Stefano! I will adjust the sequence in next version.

-- 
Best regards,
Jiqian Chen.