v10 (based on v5.15-rc6) Changes since v9: ACPI reviewers (Rafael): No changes to parts 6 & 7. MM reviewers (Horiguchi-san): No changes to part 5. Jarkko: Added Reviewed-by tags to remaining patches. N.B. I kept the tags on parts 1, 3, 4 because changes based on Sean feedback didn't seem consequential. Please let me know if you disagree and see new problems introduced by me trying to follow Sean's feedback. Sean: 1) Reverse the polarity of the neutron flow (sorry, Dr Who fan will always autocomplete a sentence that begins "reverse the polarity" that way.) Actual change is for the new flag bit. Instead of marking in-use pages with the new bit, mark free pages instead. This avoids the weirdness where I marked the pages on the dirty list as "in-use", when clearly they are not. 2) Race conditions adding poisoned pages to the global list of poisoned pages. Fixed this by changing from a global list to a per-node list. Additions are protected by the node->lock. 3) Use list_move() instead of list_del(); list_add() Fixed both places I used this idiom. 4) Race looking at page->poison when cleaning dirty pages. Added a comment documenting why losing this race isn't overly harmful. Tony Luck (7): x86/sgx: Add new sgx_epc_page flag bit to mark free pages x86/sgx: Add infrastructure to identify SGX EPC pages x86/sgx: Initial poison handling for dirty and free pages x86/sgx: Add SGX infrastructure to recover from poison x86/sgx: Hook arch_memory_failure() into mainline code x86/sgx: Add hook to error injection address validation x86/sgx: Add check for SGX pages to ghes_do_memory_failure() .../firmware-guide/acpi/apei/einj.rst | 19 +++ arch/x86/include/asm/processor.h | 8 ++ arch/x86/include/asm/set_memory.h | 4 + arch/x86/kernel/cpu/sgx/main.c | 113 +++++++++++++++++- arch/x86/kernel/cpu/sgx/sgx.h | 7 +- drivers/acpi/apei/einj.c | 3 +- drivers/acpi/apei/ghes.c | 2 +- include/linux/mm.h | 14 +++ mm/memory-failure.c | 19 ++- 9 files changed, 179 insertions(+), 10 deletions(-) base-commit: 519d81956ee277b4419c723adfb154603c2565ba -- 2.31.1
