Re: syscall __NR_mmap2

From: Jamie Lokier (jamie@shareable.org)
Date: Mon Jul 07 2003 - 19:36:56 EST


Richard B. Johnson wrote:
> mmap2(0xb8000, 8192, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_FIXED, 3, 0xb8000) = 0xb8000

You meant to write:

        mmap2(0xb8000, 8192, PROT_READ|PROT_WRITE,
              MAP_SHARED|MAP_FIXED, 3, 0xb8000 >> 12);

The offset argument to mmap2 is divided by PAGE_SIZE.
That is the whole point of mmap2 :)

-- Jamie
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