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m68k: runtime patching infrastructure

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Add the basic infrastructure to allow runtime patching of kernel and modules
to optimize a few functions with parameters, which are only calculated once
during bootup and are otherwise constant.  Use this for the conversion between
virtual and physical addresses.

Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Roman Zippel
2007-05-31 00:40:50 -07:00
committed by Linus Torvalds
parent 1fc799e1b4
commit fbe9c96129
9 changed files with 107 additions and 7 deletions
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arch/m68k/mm/motorola.c
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@@ -222,6 +222,9 @@ void __init paging_init(void)
pgprot_val(protection_map[i]) |= _PAGE_CACHE040;
}
module_fixup(NULL, __start_fixup, __stop_fixup);
flush_icache();
/*
* Map the physical memory available into the kernel virtual
* address space. It may allocate some memory for page