On Wed, Feb 22, 2006 at 07:35:50PM -0800, H. Peter Anvin wrote:
> This is what I've found so far: (64-bit architectures excluded)
>
> arm - N/A (PAGE_SHIFT == 12)
> arm26 - MMAP2_PAGE_SHIFT == 12
> cris - MMAP2_PAGE_SHIFT == PAGE_SHIFT (13)
> frv - MMAP2_PAGE_SHIFT == 12
> h8300 - N/A (PAGE_SHIFT == 12)
> i386 - N/A (PAGE_SHIFT == 12)
> m32r - N/A (PAGE_SHIFT == 12)
> m68k - MMAP2_PAGE_SHIFT == PAGE_SHIFT (variable)
> mips - MMAP2_PAGE_SHIFT == PAGE_SHIFT (variable)
A variable which happens to be fixed to 12 in practice. As explained by
Ben the API is only relevant to 32-bit kernels and afaik PAGE_SHIFT
other than 12 has only been successfully been tested on 64-bit kernels.
Ralf
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