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SubjectRe: vmalloc/module_alloc: unable to handle two memory regions
On Fri, Jan 31, 2003 at 02:48:20AM -0800, Andrew Morton wrote:
> Boggle.
> Isn't this totally abusing get_vma_area?
> What stops an ioremap region from landing in module space?

Exactly the problem.

What's more is that fs/proc/kcore.c:get_kcore_size() also breaks, so
this isn't an acceptable solution. get_kcore_size wants the module
region to be above PAGE_OFFSET.

In order to place the module in the normal vmalloc space, we end up with
a chicken and egg problem - we need to scan the module from kernel space
to find out how large to make the jump table, but we can't because the
module hasn't been loaded into kernel memory - this is the reason why it
was suggested to go down this route.

Russell King ( The developer of ARM Linux

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