Changes in v2 - Rebased ontop of v6.1-rc4 Boris - Moved exported functions (microcode_sanity_check(), find_matching_signature ) from microcode/intel.c to cpu/intel.c (patch4,6) - Removed microcode metadata specific code changes to microcode_sanity_check() (patch6) - Moved find_meta_data() from common to IFS driver (Patch 8) Sohil - Dropped portions of Patch2 from v1 and folded remaining to Patch12 - Rewording multiple commits - Avoid meta prefix in fields of metadata_header (patch8) - Defining MICROCODE_HEADER_VER* into common location (patch6, 9) - Elaborating error messages w.r.t processor flags (patch9) - Changed sysfs_emit() parameter (patch 11) v1 patches available from Link: https://lore.kernel.org/lkml/20221021203413.1220137-1-jithu.joseph@xxxxxxxxx/ Initial implementation of IFS driver assumed a single IFS test image file with a fixed name. Subsequently, it became evident that supporting more than one test image file is needed to provide more comprehensive test coverage. (Test coverage in this scenario refers to testing more transistors in the core to identify faults). This series makes the driver aware of multiple scan test image files, modifies IFS test image file headers to make it fully compatible with microcode headers and adds a few other bug fixes and changes. Patch organization: Patches 1, and 2: bug fixes Patch 3: Removes image loading during init path Patch 4, 5 and 6: exports a couple of microcode/intel.c functions for use by driver Rest of them are IFS driver changes Patches 9: IFS header format changes to make it fully compatible to intel microcode header format Patch 7,8 and 10: microcode/IFS metadata section related Patches 11, 12 and 13: native support for multiple scan test image files Patch 14: reverts the broken flag Ashok Raj (1): platform/x86/intel/ifs: Add metadata support Jithu Joseph (13): platform/x86/intel/ifs: Remove unused selection platform/x86/intel/ifs: return a more appropriate Error code platform/x86/intel/ifs: Remove image loading during init x86/microcode/intel: Expose find_matching_signature() for IFS x86/microcode/intel: Use appropriate type in microcode_sanity_check() x86/microcode/intel: Expose microcode_sanity_check() x86/microcode/intel: Use a reserved field for metasize platform/x86/intel/ifs: Use generic microcode headers and functions platform/x86/intel/ifs: Add metadata validation platform/x86/intel/ifs: Remove reload sysfs entry platform/x86/intel/ifs: Add current_batch sysfs entry Documentation/ABI: Update IFS ABI doc Revert "platform/x86/intel/ifs: Mark as BROKEN" arch/x86/include/asm/cpu.h | 2 + arch/x86/include/asm/microcode_intel.h | 5 +- drivers/platform/x86/intel/ifs/ifs.h | 27 ++- arch/x86/kernel/cpu/intel.c | 129 +++++++++++ arch/x86/kernel/cpu/microcode/intel.c | 146 +------------ drivers/platform/x86/intel/ifs/core.c | 7 +- drivers/platform/x86/intel/ifs/load.c | 205 ++++++++++-------- drivers/platform/x86/intel/ifs/runtest.c | 10 +- drivers/platform/x86/intel/ifs/sysfs.c | 41 ++-- .../ABI/testing/sysfs-platform-intel-ifs | 30 +-- drivers/platform/x86/intel/ifs/Kconfig | 4 - 11 files changed, 330 insertions(+), 276 deletions(-) base-commit: f0c4d9fc9cc9462659728d168387191387e903cc -- 2.25.1