[PATCH] ppc: Add support for bigger page sizes than 4KB on PPC44x
Paul Mackerras
paulus at samba.org
Tue Mar 13 15:56:15 EST 2007
Stefan Roese writes:
> +config PPC_PAGE_SHIFT
> + int "Page size (12=>4KB; 16=>64KB)"
> + default "12"
> + range 12 16
> + help
> + The PAGE_SIZE definition. Increasing the page size may
> + improve the system performance in some dedicated cases.
> +
> + If unsure, set it to 12 (4KB).
[snip]
> +#else
> +#error "Unsupported PAGE_SIZE"
> +#endif
If you only support 4k and 64k page sizes, why do you let the user
choose 13, 14 or 15 for PPC_PAGE_SHIFT? Why not just have a "64k
pages" boolean option like 64-bit powerpc does?
Paul.
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