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    SubjectRe: [PATCH] Dead code in i386/kernel/process.c
    Brian Gerst wrote:
    > This patch removes an artifact of code left over from the 2.0 days when
    > the kernel didn't use flat segments.
    >
    >
    > ------------------------------------------------------------------------
    >
    > diff -urN linux-2.5.30/arch/i386/kernel/process.c linux/arch/i386/kernel/process.c
    > --- linux-2.5.30/arch/i386/kernel/process.c Fri Aug 2 10:15:28 2002
    > +++ linux/arch/i386/kernel/process.c Sat Aug 3 16:41:03 2002
    > @@ -313,11 +313,6 @@
    > memcpy (swapper_pg_dir, swapper_pg_dir + USER_PGD_PTRS,
    > sizeof (swapper_pg_dir [0]) * KERNEL_PGD_PTRS);
    >
    > - /* Make sure the first page is mapped to the start of physical memory.
    > - It is normally not mapped, to trap kernel NULL pointer dereferences. */
    > -
    > - pg0[0] = _PAGE_RW | _PAGE_PRESENT;
    > -
    > /*
    > * Use `swapper_pg_dir' as our page directory.
    > */

    I should clarify that the dead code does the same thing as the preceding
    memcpy.

    -
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