You mean like this in-tree code?

config MEMORY_FAILURE
        depends on MMU
        depends on ARCH_SUPPORTS_MEMORY_FAILURE
        bool "Enable recovery from hardware memory errors"
        select MEMORY_ISOLATION
        help
          Enables code to recover from some memory failures on systems
          with MCA recovery. This allows a system to continue running
          even when some of its memory has uncorrected errors. This requires
          special hardware support and typically ECC memory.

Well, yeah. My case is also related to uncorrected errors and ECC
memory. I want to improve the handler that is invoked for
uncorrectable ECC errors. Once this sort of error occurs, it gives the
address where the error happened. And if we can identify the processes
involved with that memory, the handler can just kill them rather than
panicking the kernel.

I don't really know how the above in-tree code will be helpful in my
case. Can you please explain it a little to me?

-- 
Thanks and regards,
Sandeep K Chaudhary.