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SubjectRe: PROBLEM: Is remap_page_range() working properly?
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> Is remap_page_range working properly?

Probably

> But the code in remap_pte_range() seems to behave exactly in the opposite
> way; as far as I can see, it sets to null every page, _except_ "references
> to nonexistent pages"! Here are the relevant lines of code taken from
> kernel 2.0.32 (the file is mm/memory.c):

You can only remap reserved or I/O space

Read drivers/sound a bit - it has code that allocates, reserves and remaps
memory

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