Messages in this thread | | | Date | Sun, 12 Jan 2003 19:24:46 -0800 (PST) | From | Linus Torvalds <> | Subject | Re: exception tables in 2.5.55 |
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On Mon, 13 Jan 2003, Greg Ungerer wrote: > > Tested and working on m68knommu architecture.
Why does exceptions have anything to do with no-mmu?
There are exceptions that have nothing to do with MMU's, and a no-mmu architecture should still support them. On x86, we have a number of such exceptions, for example general protection stuff for wrong values for special registers etc.
In other words, not applied. Page table exceptions are just the most _common_ exception type, but there's absolutely nothing in the mechanism that has anything at all to do with MMU-less.
If some archtiecture happens to have an empty exception table, that's fine.
Linus
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