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    Subjectwhy do we need pg1?

    The code which sets up the page table at pg0 (in head.S) goes all the way
    until it hits empty_zero_page so I don't understand why we need the label
    pg1 in between, since it is never referred to by any other code?

    Also, is the comment in asm/pgtable.h

    /* page table for 0-4MB for everybody */
    extern unsigned long pg0[1024];

    true or false? Isn't it for 0-8M as head.S claims?


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