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    SubjectRe: top stack (l)users for 2.5.69

    Jesse Pollard wrote:
    > On Wednesday 07 May 2003 12:13, Jonathan Lundell wrote:
    > [snip]
    >>One thing that would help (aside from separate interrupt stacks)
    >>would be a guard page below the stack. That wouldn't require any
    >>physical memory to be reserved, and would provide positive indication
    >>of stack overflow without significant runtime overhead.
    > It does take up a page table entry, which may also be in short supply

    Now, I'm sure this has GOT to be a terribly ignorant question, but I'll
    try anyhow:

    What happens if you simply neglect to provide a mapping for that page?
    I'm sure that will cause some sort of page fault. Why would you have to
    do something different?

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