20 Feb
2025
20 Feb
'25
10:59 a.m.
On Feb 20, 2025, at 1:52 PM, paul.kimpel--- via cctalk
<cctalk(a)classiccmp.org> wrote:
What is the problem with ISRs running in a user stack? The ISR runs, exits, the stack is
cut back, and net effect on the user's stack is zero.
A stack access fault in user mode kills the process, in kernel mode (certainly in an ISR)
it kills the whole system. You can't leave the integrity of the OS at the mercy of
the application having a valid stack.
paul