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The goal is to avoid duplicating functionality like reading and clearing MCA banks. Based on feedback, this revision also include changes to the MCA init flow. Patches 1-8: General fixes and cleanups. Patches 9-14: Add BSP-only init flow and related changes. Patches 15-18: Updates from v1 set. Patches 19-21: Interrupt storm handling rebased on current set. Patch 22: Add support to get threshold limit from APEI HEST. Thanks, Yazen --- Changes in v4: - Rebase on v6.16-rc3. - Address comments from Boris about function names. - Redo DFR handler integration. - Drop AMD APIC LVT rework. - Include more AMD thresholding reworks and fixes. - Add support to get threshold limit from APEI HEST. - Reorder patches so most fixes and reworks are at the beginning. - Link to v3: https://lore.kernel.org/r/20250415-wip-mca-updates-v3-0-8ffd9eb4aa56@amd.com Changes in v3: - Rebased on tip/x86/merge rather than tip/master. - Updated MSR access helpers (*msrl -> *msrq). - Add patch to fix polling after a storm. - Link to v2: https://lore.kernel.org/r/20250213-wip-mca-updates-v2-0-3636547fe05f@amd.com Changes in v2: - Add general cleanup pre-patches. - Add changes for BSP-only init. - Add interrupt storm handling for AMD. - Link to v1: https://lore.kernel.org/r/20240523155641.2805411-1-yazen.ghannam@amd.com --- Borislav Petkov (1): x86/mce: Cleanup bank processing on init Smita Koralahalli (1): x86/mce: Handle AMD threshold interrupt storms Yazen Ghannam (20): x86/mce: Don't remove sysfs if thresholding sysfs init fails x86/mce: Restore poll settings after storm subsides x86/mce/amd: Add default names for MCA banks and blocks x86/mce/amd: Fix threshold limit reset x86/mce/amd: Rename threshold restart function x86/mce/amd: Remove return value for mce_threshold_{create,remove}_device() x86/mce/amd: Remove smca_banks_map x86/mce/amd: Put list_head in threshold_bank x86/mce: Remove __mcheck_cpu_init_early() x86/mce: Define BSP-only init x86/mce: Define BSP-only SMCA init x86/mce: Do 'UNKNOWN' vendor check early x86/mce: Separate global and per-CPU quirks x86/mce: Move machine_check_poll() status checks to helper functions x86/mce: Unify AMD THR handler with MCA Polling x86/mce: Unify AMD DFR handler with MCA Polling x86/mce/amd: Support SMCA Corrected Error Interrupt x86/mce/amd: Remove redundant reset_block() x86/mce/amd: Define threshold restart function for banks x86/mce: Save and use APEI corrected threshold limit arch/x86/include/asm/mce.h | 23 ++- arch/x86/kernel/acpi/apei.c | 2 + arch/x86/kernel/cpu/common.c | 1 + arch/x86/kernel/cpu/mce/amd.c | 366 ++++++++++++++---------------------- arch/x86/kernel/cpu/mce/core.c | 363 +++++++++++++++++------------------ arch/x86/kernel/cpu/mce/intel.c | 18 ++ arch/x86/kernel/cpu/mce/internal.h | 12 ++ arch/x86/kernel/cpu/mce/threshold.c | 16 ++ 8 files changed, 379 insertions(+), 422 deletions(-) --- base-commit: 86731a2a651e58953fc949573895f2fa6d456841 change-id: 20250210-wip-mca-updates-bed2a67c9c57