-----Original Message----- From: liulongfang liulongfang@huawei.com Sent: Tuesday, July 30, 2024 1:15 PM To: alex.williamson@redhat.com; jgg@nvidia.com; Shameerali Kolothum Thodi shameerali.kolothum.thodi@huawei.com; Jonathan Cameron jonathan.cameron@huawei.com Cc: kvm@vger.kernel.org; linux-kernel@vger.kernel.org; linuxarm@openeuler.org; liulongfang liulongfang@huawei.com Subject: [PATCH v7 4/4] Documentation: add debugfs description for hisi migration
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@huawei.com
.../ABI/testing/debugfs-hisi-migration | 25 +++++++++++++++++++ 1 file changed, 25 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..053f3ebba9b1 --- /dev/null +++ b/Documentation/ABI/testing/debugfs-hisi-migration @@ -0,0 +1,25 @@ +What: /sys/kernel/debug/vfio/<device>/migration/hisi_acc/dev_data +Date: Jul 2024 +KernelVersion: 6.11 +Contact: Longfang Liu liulongfang@huawei.com +Description: Read the configuration data and some status data
required for device live migration. These data include devicestatus data, queue configuration data, some taskconfiguration
data and device attribute data. The output format of the datais defined by the live migration driver.+What: /sys/kernel/debug/vfio/<device>/migration/hisi_acc/migf_data +Date: Jul 2024 +KernelVersion: 6.11 +Contact: Longfang Liu liulongfang@huawei.com +Description: Read the data from the last completed live migration.
This data includes the same device status data as in"dev_data".
And some device status data after the migration iscompleted.
Actually what info is different from dev_data here? Only that it is the dev_data after a migration is attempted/completed, right?
Thanks, Shameer
+What: /sys/kernel/debug/vfio/<device>/migration/hisi_acc/cmd_state +Date: Jul 2024 +KernelVersion: 6.11 +Contact: Longfang Liu liulongfang@huawei.com +Description: Used to obtain the device command sending and receiving
channel status. Returns failure or success logs based on theresults.-- 2.24.0