On 2023/3/17 AM12:45, Luck, Tony wrote: >> On x86 platform with MCA, patrol scrub errors are asynchronous error, which are >> by default signaled with MCE. It is possible to downgrade the patrol scrub SRAO >> to UCNA or other correctable error in the logging/signaling behavior and signal >> CMCI only. >> >> As far as I know, on X86 platform, MCE is handled in do_machche_check() and only >> asynchronous error is notified through HEST. Can we safely drop ACPI_HEST_NOTIFY_MCE >> and only consider ACPI_HEST_NOTIFY_SEA as synchronous notification? >> >> Tony, do you have any comments on this? Please point out if I am wrong. Thank you. > > You are correct. On x86 the HEST notifications are always asynchronous. The only > synchronous events are machine check with IA32_MCi_STATUS.AR == 1 (patrol > scrub and cache eviction machine checks are async and do not set this bit). > > -Tony Thank you for confirmation. I will drop ACPI_HEST_NOTIFY_MCE in is_hest_sync_notify(). Best Regards. Shuai
