On Fri 31 May 2013 04:22:36 PM CST, Joe Jin wrote: > Hi Tony, > > With commit 0bb77c46 "pstore: X86 platform interface using ACPI/APEI/ERST" > when reboot the server kernel will call erst_writer() to write CPER_NOTIFY_MCE > to ERST, if reboot the server to Windows we find MCE from system event logs. > Any reason write this to ERST when reboot? > > Any input will appreciate! > > Regards, > Joe > -- > To unsubscribe from this list: send the line "unsubscribe linux-acpi" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html Hi Joe, I guess this is used to handle an uncorrectable MCE. When uncorrectable MCE happens, the whole disk io stack is unreliable so we couldn't write MCE record to disk, ERST is the last method to store the MCE record and OS could retrieve this record from ERST on next reboot. Regards! Gerry -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
