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Export set_memory_ro() and set_memory_rw() calls for use by drivers that need to have more debug information about who might be writing to memory space. this was initially developed for use while debugging a memory corruption problem with e1000e. Signed-off-by: Bruce Allan <bruce.w.allan@intel.com> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>