This patchset adds a new wrapper for struct mce to prevent its bloating and export vendor specific error information. Additionally, support is also introduced for two new "syndrome" MSRs used in newer AMD Scalable MCA (SMCA) systems. Also, a new "FRU Text in MCA" feature that uses these new "syndrome" MSRs has been addded.
Patch 1 adds the new wrapper structure mce_hw_err for the struct mce while also modifying the mce_record tracepoint to use the new wrapper. Patch 2 adds support for the new "syndrome" registers. They are read/printed wherever the existing MCA_SYND register is used. Patch 3 updates the function that pulls MCA information from UEFI x86 Common Platform Error Records (CPERs) to handle systems that support the new registers. Patch 4 adds support to the AMD MCE decoder module to detect and use the "FRU Text in MCA" feature which leverages the new registers. NOTE: This set was initially submitted as part of the larger MCA Updates set. v1: https://lore.kernel.org/linux-edac/20231118193248.1296798-1-yazen.ghan...@amd.com/ v2: https://lore.kernel.org/linux-edac/20240404151359.47970-1-yazen.ghan...@amd.com/ However, since the MCA Updates set has been split up into smaller sets, this set, going forward, will be submitted independently. Having said that, this set set depends on and applies cleanly on top of the below two sets. [1] https://lore.kernel.org/linux-edac/20240521125434.1555845-1-yazen.ghan...@amd.com/ [2] https://lore.kernel.org/linux-edac/20240523155641.2805411-1-yazen.ghan...@amd.com/ Changes in v2: - Drop dependencies on sets [1] and [2] above and rebase on top of tip/master. Changes in v3: - Move wrapper changes required in mce_read_aux() and mce_no_way_out() from second patch to the first patch. - Modify commit messages for second and fourth patch per feedback received. - Add comments to explain purpose of the new wrapper structure. - Incorporate suggested touchup in the third patch. - Remove call to memset() for the frutext string in the fourth patch. Instead, just ensure that the string is NULL terminated. - Fix SoB chains on all patches to properly reflect the patch path. Changes in v4: - Resolve kernel test robot's warning on the use of memset() in do_machine_check(). - Rebase on top of tip/master to avoid merge conflicts. Links: v1: https://lore.kernel.org/linux-edac/20240530211620.1829453-1-avadhut.n...@amd.com/ v2: https://lore.kernel.org/linux-edac/20240625195624.2565741-1-avadhut.n...@amd.com/ v3: https://lore.kernel.org/linux-edac/20240730185406.3709876-1-avadhut.n...@amd.com/T/#t Avadhut Naik (2): x86/mce: Add wrapper for struct mce to export vendor specific info x86/mce, EDAC/mce_amd: Add support for new MCA_SYND{1,2} registers Yazen Ghannam (2): x86/mce/apei: Handle variable register array size EDAC/mce_amd: Add support for FRU Text in MCA arch/x86/include/asm/mce.h | 36 +++- arch/x86/include/uapi/asm/mce.h | 3 +- arch/x86/kernel/cpu/mce/amd.c | 31 ++-- arch/x86/kernel/cpu/mce/apei.c | 109 ++++++++---- arch/x86/kernel/cpu/mce/core.c | 210 ++++++++++++++---------- arch/x86/kernel/cpu/mce/dev-mcelog.c | 2 +- arch/x86/kernel/cpu/mce/genpool.c | 20 +-- arch/x86/kernel/cpu/mce/inject.c | 4 +- arch/x86/kernel/cpu/mce/internal.h | 4 +- drivers/acpi/acpi_extlog.c | 2 +- drivers/acpi/nfit/mce.c | 2 +- drivers/edac/i7core_edac.c | 2 +- drivers/edac/igen6_edac.c | 2 +- drivers/edac/mce_amd.c | 27 ++- drivers/edac/pnd2_edac.c | 2 +- drivers/edac/sb_edac.c | 2 +- drivers/edac/skx_common.c | 2 +- drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c | 2 +- drivers/ras/amd/fmpm.c | 2 +- drivers/ras/cec.c | 2 +- include/trace/events/mce.h | 51 +++--- 21 files changed, 329 insertions(+), 188 deletions(-) base-commit: 1d00f3427bfdb9f5b7a817b1f4f44c5b02da3edd -- 2.34.1
