Re: top stack (l)users for 2.5.69

Timothy Miller
2003-05-07T20:26:11Z

Richard B. Johnson wrote:
>
> When a caller executes int 0x80, this is a software interrupt,
> called a 'trap'. It enters the trap handler on the kernel stack,
> with the segment selectors set up as defined for that trap-handler.
> It happens because software told hardware what to do ahead of time.
> Software doesn't do it during the trap event. In the trap handler,
> no context switch normally occurs.

On typical processors, when one gets an interrupt, the current program
counter and processor state flags are pushed onto a stack. Which stack
gets used for this?