Messages in this thread | | | Date | Wed, 07 May 2003 16:42:26 -0400 | From | Timothy Miller <> | Subject | Re: top stack (l)users for 2.5.69 |
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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?
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