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Under Linux, how can I tell what specific process owns / is using a given address in physical memory?
I understand that this may require writing a kernel module to access some kernel data structure and return the results to a user – I need to know how it can be done, regardless of how complicated it is.
The pages in use by a process and their location in physical memory are not static pieces of information. However, the information you seek should be in the page tables. A change went into the kernel that might be almost exactly what you’re looking for:
The added functionality is enabled by a new config option (X86_PTDUMP).