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Date:   Mon, 30 Oct 2023 07:51:04 +0100
From:   Cédric Le Goater <clegoate@...hat.com>
To:     Longfang Liu <liulongfang@...wei.com>, alex.williamson@...hat.com,
        jgg@...dia.com, shameerali.kolothum.thodi@...wei.com,
        jonathan.cameron@...wei.com
Cc:     bcreeley@....com, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, linuxarm@...neuler.org
Subject: Re: [PATCH v18 2/2] Documentation: add debugfs description for vfio

On 10/28/23 09:54, Longfang Liu wrote:
> 1.Add an debugfs document description file to help users understand
> how to use the accelerator live migration driver's debugfs.
> 2.Update the file paths that need to be maintained in MAINTAINERS

Should we have 2 patches instead ?

Anyhow,

Reviewed-by: Cédric Le Goater <clg@...hat.com>

Thanks,

C.


> 
> Signed-off-by: Longfang Liu <liulongfang@...wei.com>
> ---
>   Documentation/ABI/testing/debugfs-vfio | 25 +++++++++++++++++++++++++
>   MAINTAINERS                            |  1 +
>   2 files changed, 26 insertions(+)
>   create mode 100644 Documentation/ABI/testing/debugfs-vfio
> 
> diff --git a/Documentation/ABI/testing/debugfs-vfio b/Documentation/ABI/testing/debugfs-vfio
> new file mode 100644
> index 000000000000..445e9f58f924
> --- /dev/null
> +++ b/Documentation/ABI/testing/debugfs-vfio
> @@ -0,0 +1,25 @@
> +What:		/sys/kernel/debug/vfio
> +Date:		Oct 2023
> +KernelVersion:  6.7
> +Contact:	Longfang Liu <liulongfang@...wei.com>
> +Description:	This debugfs file directory is used for debugging
> +		of vfio devices, it's a common directory for all vfio devices.
> +		Vfio core will create a device subdirectory under this
> +		directory.
> +
> +What:		/sys/kernel/debug/vfio/<device>/migration
> +Date:		Oct 2023
> +KernelVersion:  6.7
> +Contact:	Longfang Liu <liulongfang@...wei.com>
> +Description:	This debugfs file directory is used for debugging
> +		of vfio devices that support live migration.
> +		The debugfs of each vfio device that supports live migration
> +		could be created under this directory.
> +
> +What:		/sys/kernel/debug/vfio/<device>/migration/state
> +Date:		Oct 2023
> +KernelVersion:  6.7
> +Contact:	Longfang Liu <liulongfang@...wei.com>
> +Description:	Read the live migration status of the vfio device.
> +		The contents of the state file reflects the migration state
> +		relative to those defined in the vfio_device_mig_state enum
> diff --git a/MAINTAINERS b/MAINTAINERS
> index b19995690904..a6be3b4219c7 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -22591,6 +22591,7 @@ L:	kvm@...r.kernel.org
>   S:	Maintained
>   T:	git https://github.com/awilliam/linux-vfio.git
>   F:	Documentation/ABI/testing/sysfs-devices-vfio-dev
> +F:	Documentation/ABI/testing/debugfs-vfio
>   F:	Documentation/driver-api/vfio.rst
>   F:	drivers/vfio/
>   F:	include/linux/vfio.h

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