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Message-ID: <20231028075447.41939-3-liulongfang@huawei.com> Date: Sat, 28 Oct 2023 15:54:47 +0800 From: Longfang Liu <liulongfang@...wei.com> To: <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>, <liulongfang@...wei.com> Subject: [PATCH v18 2/2] Documentation: add debugfs description for vfio 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 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 -- 2.24.0
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