Add the sysfs attributes in ABI/stable for In-Field Scan. Originally-by: Kyung Min Park <kyung.min.park@xxxxxxxxx> Signed-off-by: Jithu Joseph <jithu.joseph@xxxxxxxxx> Reviewed-by: Ashok Raj <ashok.raj@xxxxxxxxx> Reviewed-by: Tony Luck <tony.luck@xxxxxxxxx> --- Documentation/ABI/stable/sysfs-driver-ifs | 85 +++++++++++++++++++++++ 1 file changed, 85 insertions(+) create mode 100644 Documentation/ABI/stable/sysfs-driver-ifs diff --git a/Documentation/ABI/stable/sysfs-driver-ifs b/Documentation/ABI/stable/sysfs-driver-ifs new file mode 100644 index 000000000000..8b6b9472f57e --- /dev/null +++ b/Documentation/ABI/stable/sysfs-driver-ifs @@ -0,0 +1,85 @@ +What: /sys/devices/system/cpu/ifs/run_test +Date: Feb 28, 2022 +KernelVersion: 5.18.0 +Contact: linux-kernel@xxxxxxxxxxxxxxx +Description: echo 1 to trigger ifs test for all online cores. + +What: /sys/devices/system/cpu/ifs/status +Date: Feb 28, 2022 +KernelVersion: 5.18.0 +Contact: linux-kernel@xxxxxxxxxxxxxxx +Description: Global status. Shows the most serious status across + all cores (fail > untested > pass) + +What: /sys/devices/system/cpu/ifs/image_version +Date: Feb 28, 2022 +KernelVersion: 5.18.0 +Contact: linux-kernel@xxxxxxxxxxxxxxx +Description: Version of loaded IFS binary image. + +What: /sys/devices/system/cpu/ifs/reload +Date: Feb 28, 2022 +KernelVersion: 5.18.0 +Contact: linux-kernel@xxxxxxxxxxxxxxx +Description: echo 1 to reload IFS image. + +What: /sys/devices/system/cpu/ifs/cpu_pass_list +Date: Feb 28, 2022 +KernelVersion: 5.18.0 +Contact: linux-kernel@xxxxxxxxxxxxxxx +Description: List of cpus which passed the IFS test. + +What: /sys/devices/system/cpu/ifs/cpu_fail_list +Date: Feb 28, 2022 +KernelVersion: 5.18.0 +Contact: linux-kernel@xxxxxxxxxxxxxxx +Description: List of cpus which failed the IFS test. + +What: /sys/devices/system/cpu/ifs/cpu_untested_list +Date: Feb 28, 2022 +KernelVersion: 5.18.0 +Contact: linux-kernel@xxxxxxxxxxxxxxx +Description: List of cpus which could not be tested. + +What: /sys/module/intel_ifs/parameters/noint +Date: Feb 28, 2022 +KernelVersion: 5.18.0 +Contact: linux-kernel@xxxxxxxxxxxxxxx +Description: SAF tunable parameter that user can modify before + the scan run if they wish to override default value. + + When set, system interrupts are not allowed to interrupt an IFS. The + default state for this parameter is set. + +What: /sys/module/intel_ifs/parameters/retry +Date: Feb 28, 2022 +KernelVersion: 5.18.0 +Contact: linux-kernel@xxxxxxxxxxxxxxx +Description: SAF tunable parameter that user can modify at + load time if they wish to override default value. + + Maximum retry counter when the test is not executed due to an + event such as interrupt. The default value is 5, it can be set to any + value from 1 to 20. + +What: /sys/devices/system/cpu/cpu#/ifs/run_test +Date: Feb 28, 2022 +KernelVersion: 5.18.0 +Contact: linux-kernel@xxxxxxxxxxxxxxx +Description: IFS target core testing. echo 1 to trigger scan test on cpu#. + +What: /sys/devices/system/cpu/cpu#/ifs/status +Date: Feb 28, 2022 +KernelVersion: 5.18.0 +Contact: linux-kernel@xxxxxxxxxxxxxxx +Description: The status of IFS test on a specific cpu#. It can be one of "pass", "fail" + or "untested". + +What: /sys/devices/system/cpu/cpu#/ifs/details +Date: Feb 28, 2022 +KernelVersion: 5.18.0 +Contact: linux-kernel@xxxxxxxxxxxxxxx +Description: The details file reports the hex value of the SCAN_STATUS MSR. Note that + the error_code field may contain driver defined software code not defined + in the Intel SDM. + -- 2.17.1
