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    SubjectMapping ram memory using ioremap
    We are using part of DRAM as shared memory
    between DSP and SoC. However, DSP
    can only access higher 1GB of DRAM.

    In order to map the aforementioned memory
    I tried using ioremap and it blurted out the
    warning as mentioned in this article.
    https://lwn.net/Articles/409700/

    What is the alternative to using ioremap to
    map specific RAM memory region for use
    in the driver as shared memory?

    I tried memremap + reserved memory as well
    and it failed.

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