Changes in Makefile

677fb7b0 - platform/x86: intel: Use -y instead of -objs in Makefile

Tue, 18 Feb 2025 19:41:11 +0000

platform/x86: intel: Use *-y instead of *-objs in MakefileThe `objs` suffix is reserved for user-space tools. Use the `y` suffixinstead, which is usually used for kernel drivers.Suggested-by: Andy Shevchenko Signed-off-by: Kurt Borja Reviewed-by: Jithu Joseph Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20250218194113.26589-5-kuurtb@gmail.comReviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen List of files: /linux-6.15/drivers/platform/x86/intel/ifs/Makefile

6f33a92b - platform/x86/intel/ifs: Add IFS sysfs interface

Fri, 06 May 2022 22:54:07 +0000

platform/x86/intel/ifs: Add IFS sysfs interfaceImplement sysfs interface to trigger ifs test for a specific cpu.Additional interfaces related to checking the status of thescan test and seeing the version of the loaded IFS binaryare also added.The basic usage is as below. - To start test, for example on cpu5: echo 5 > /sys/devices/platform/intel_ifs/run_test - To see the status of the last test cat /sys/devices/platform/intel_ifs/status - To see the version of the loaded scan binary cat /sys/devices/platform/intel_ifs/image_versionReviewed-by: Dan Williams Signed-off-by: Jithu Joseph Co-developed-by: Tony Luck Signed-off-by: Tony Luck Acked-by: Hans de Goede Reviewed-by: Greg Kroah-Hartman Reviewed-by: Thomas Gleixner Link: https://lore.kernel.org/r/20220506225410.1652287-10-tony.luck@intel.comSigned-off-by: Hans de Goede List of files: /linux-6.15/drivers/platform/x86/intel/ifs/Makefile

2b40e654 - platform/x86/intel/ifs: Add scan test support

Fri, 06 May 2022 22:54:06 +0000

platform/x86/intel/ifs: Add scan test supportIn a core, the scan engine is shared between sibling cpus.When a Scan test (for a particular core) is triggered by the user,the scan chunks are executed on all the threads on the core usingstop_core_cpuslocked.Scan may be aborted by some reasons. Scan test will be aborted in certaincircumstances such as when interrupt occurred or cpu does not have enoughpower budget for scan. In this case, the kernel restart scan from the chunkwhere it stopped. Scan will also be aborted when the test is failed. Inthis case, the test is immediately stopped without retry.Reviewed-by: Dan Williams Signed-off-by: Jithu Joseph Co-developed-by: Tony Luck Signed-off-by: Tony Luck Acked-by: Hans de Goede Reviewed-by: Greg Kroah-Hartman Reviewed-by: Thomas Gleixner Link: https://lore.kernel.org/r/20220506225410.1652287-9-tony.luck@intel.comSigned-off-by: Hans de Goede List of files: /linux-6.15/drivers/platform/x86/intel/ifs/Makefile

fb57fc78 - platform/x86/intel/ifs: Read IFS firmware image

Fri, 06 May 2022 22:54:03 +0000

platform/x86/intel/ifs: Read IFS firmware imageDriver probe routine allocates structure to communicate statusand parameters between functions in the driver. Also callload_ifs_binary() to load the scan image file.There is a separate scan image file for each processor family,model, stepping combination. This is read from the static path: /lib/firmware/intel/ifs/{ff-mm-ss}.scanStep 1 in loading is to generate the correct path and userequest_firmware_direct() to load into memory.Subsequent patches will use the IFS MSR interfaces to copythe image to BIOS reserved memory and validate the SHA256checksums.Reviewed-by: Dan Williams Signed-off-by: Jithu Joseph Co-developed-by: Tony Luck Signed-off-by: Tony Luck Acked-by: Hans de Goede Reviewed-by: Greg Kroah-Hartman Reviewed-by: Thomas Gleixner Link: https://lore.kernel.org/r/20220506225410.1652287-6-tony.luck@intel.comSigned-off-by: Hans de Goede List of files: /linux-6.15/drivers/platform/x86/intel/ifs/Makefile

67896ef1 - platform/x86/intel/ifs: Add stub driver for In-Field Scan

Fri, 06 May 2022 22:54:02 +0000

platform/x86/intel/ifs: Add stub driver for In-Field ScanCloud Service Providers that operate fleets of servers have reported[1] occasions where they can detect that a CPU has gone bad due toeffects like electromigration, or isolated manufacturing defects.However, that detection method is A/B testing seemingly randomapplication failures looking for a pattern. In-Field Scan (IFS) isa driver for a platform capability to load a crafted 'scan image'to run targeted low level diagnostics outside of the CPU's architecturalerror detection capabilities.Stub version of driver just does initial part of check for the IFSfeature. MSR_IA32_CORE_CAPS must enumerate the presence of theMSR_INTEGRITY_CAPS MSR.[1]: https://www.youtube.com/watch?v=QMF3rqhjYuMReviewed-by: Dan Williams Signed-off-by: Tony Luck Acked-by: Hans de Goede Reviewed-by: Greg Kroah-Hartman Reviewed-by: Thomas Gleixner Link: https://lore.kernel.org/r/20220506225410.1652287-5-tony.luck@intel.comSigned-off-by: Hans de Goede List of files: /linux-6.15/drivers/platform/x86/intel/ifs/Makefile

Changes in Makefile

677fb7b0 - platform/x86: intel: Use *-y instead of *-objs in Makefile

6f33a92b - platform/x86/intel/ifs: Add IFS sysfs interface

2b40e654 - platform/x86/intel/ifs: Add scan test support

fb57fc78 - platform/x86/intel/ifs: Read IFS firmware image

67896ef1 - platform/x86/intel/ifs: Add stub driver for In-Field Scan

677fb7b0 - platform/x86: intel: Use -y instead of -objs in Makefile