linux-kernel - Re: [PATCH v3 4/4] Documentation: add debugfs description for hisi migration

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Date: Sat, 30 Mar 2024 15:53:52 +0800
From: liulongfang <liulongfang@...wei.com>
To: <alex.williamson@...hat.com>, <jgg@...dia.com>,
	<shameerali.kolothum.thodi@...wei.com>, <jonathan.cameron@...wei.com>
CC: <kvm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linuxarm@...neuler.org>
Subject: Re: [PATCH v3 4/4] Documentation: add debugfs description for hisi
 migration

On 2024/3/7 14:36, Longfang Liu wrote:
> Add a debugfs document description file to help users understand
> how to use the hisilicon accelerator live migration driver's
> debugfs.
> 
> Update the file paths that need to be maintained in MAINTAINERS
> 
> Signed-off-by: Longfang Liu <liulongfang@...wei.com>
> ---
>  .../ABI/testing/debugfs-hisi-migration        | 34 +++++++++++++++++++
>  MAINTAINERS                                   |  1 +
>  2 files changed, 35 insertions(+)
>  create mode 100644 Documentation/ABI/testing/debugfs-hisi-migration
> 
> diff --git a/Documentation/ABI/testing/debugfs-hisi-migration b/Documentation/ABI/testing/debugfs-hisi-migration
> new file mode 100644
> index 000000000000..7111af41ed05
> --- /dev/null
> +++ b/Documentation/ABI/testing/debugfs-hisi-migration
> @@ -0,0 +1,34 @@
> +What:		/sys/kernel/debug/vfio/<device>/migration/hisi_acc/data
> +Date:		Mar 2024
> +KernelVersion:  6.8
> +Contact:	Longfang Liu <liulongfang@...wei.com>
> +Description:	Read the live migration data of the vfio device.
> +		These data include device status data, queue configuration
> +		data and some task configuration data.
> +		The output format of the data is defined by the live
> +		migration driver.
> +
> +What:		/sys/kernel/debug/vfio/<device>/migration/hisi_acc/attr
> +Date:		Mar 2024
> +KernelVersion:  6.8
> +Contact:	Longfang Liu <liulongfang@...wei.com>
> +Description:	Read the live migration attributes of the vfio device.
> +		it include device status attributes and data length attributes
> +		The output format of the attributes is defined by the live
> +		migration driver.
> +
> +What:		/sys/kernel/debug/vfio/<device>/migration/hisi_acc/cmd_state
> +Date:		Mar 2024
> +KernelVersion:  6.8
> +Contact:	Longfang Liu <liulongfang@...wei.com>
> +Description:	Used to obtain the device command sending and receiving
> +		channel status. If successful, returns the command value.
> +		If failed, return error log.
> +
> +What:		/sys/kernel/debug/vfio/<device>/migration/hisi_acc/save
> +Date:		Mar 2024
> +KernelVersion:  6.8
> +Contact:	Longfang Liu <liulongfang@...wei.com>
> +Description:	Trigger the Hisilicon accelerator device to perform
> +		the state saving operation of live migration through the read
> +		operation, and output the operation log results.
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 7625911ec2f1..8c2d13b13273 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -23072,6 +23072,7 @@ M:	Longfang Liu <liulongfang@...wei.com>
>  M:	Shameer Kolothum <shameerali.kolothum.thodi@...wei.com>
>  L:	kvm@...r.kernel.org
>  S:	Maintained
> +F:	Documentation/ABI/testing/debugfs-hisi-migration
>  F:	drivers/vfio/pci/hisilicon/
>  
>  VFIO MEDIATED DEVICE DRIVERS
> 

Hi, Alex:
Are there any issues with this patchset that need to be modified?

Thanks,

Longfang.