On 2024/8/5 17:09, Shameerali Kolothum Thodi wrote: > > >> -----Original Message----- >> From: liulongfang <liulongfang@xxxxxxxxxx> >> Sent: Tuesday, July 30, 2024 1:15 PM >> To: alex.williamson@xxxxxxxxxx; jgg@xxxxxxxxxx; Shameerali Kolothum >> Thodi <shameerali.kolothum.thodi@xxxxxxxxxx>; Jonathan Cameron >> <jonathan.cameron@xxxxxxxxxx> >> Cc: kvm@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; >> linuxarm@xxxxxxxxxxxxx; liulongfang <liulongfang@xxxxxxxxxx> >> 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@xxxxxxxxxx> >> --- >> .../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@xxxxxxxxxx> >> +Description: Read the configuration data and some status data >> + required for device live migration. These data include device >> + status data, queue configuration data, some task >> configuration >> + data and device attribute data. The output format of the data >> + is 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@xxxxxxxxxx> >> +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 is >> completed. > > Actually what info is different from dev_data here? Only that it is the > dev_data after a migration is attempted/completed, right? > Yes, the only difference is: The mig_data is the dev_data that is migrated. Thanks. Longfang. > Thanks, > Shameer > >> + >> +What: >> /sys/kernel/debug/vfio/<device>/migration/hisi_acc/cmd_state >> +Date: Jul 2024 >> +KernelVersion: 6.11 >> +Contact: Longfang Liu <liulongfang@xxxxxxxxxx> >> +Description: Used to obtain the device command sending and receiving >> + channel status. Returns failure or success logs based on the >> + results. >> -- >> 2.24.0 > > . >
