On 2017/10/18 17:44, James Morse wrote:

quoted

The thing is abbreviated as "SEI" and apparently means "System Error
Interrupt". Nothing else.

ARM has 'external abort', which are either synchronous or asynchronous, both are
delivered as different types of exception.

Asynchronous external abort is treated as a special kind of interrupt, 'SError
Interrupt', (where SError stands for System Error, but its rarely written like
that). 'SEI' is a relatively new abbreviation for SError interrupt.


What should we call this thing? In the ACPI code I'd prefer 'SEI' as that is
what the ACPI spec calls it. Here we are talking about an GHES notification.

But in the arm64 arch code this should be called SError Interrupt as this is
what the ARM-ARM calls it. This code cares about exception routing and interrupt
masking.


But, I don't really care.

Thanks very much James's clear explanation.
I agree with James.

In the ACPI sepc, we usually call SEI as SError Interrupt, we rarely call SError to System Error,
Anyway I will explain clearly about the abbreviations in my next version patch.