From: Paul Mackerras <paulus@samba.org>
To: Stefan Roese <sr@denx.de>
Cc: linuxppc-dev@ozlabs.org
Subject: Re: [PATCH] ppc: Add support for bigger page sizes than 4KB on PPC44x
Date: Tue, 13 Mar 2007 15:56:15 +1100 [thread overview]
Message-ID: <17910.12015.508991.966593@cargo.ozlabs.ibm.com> (raw)
In-Reply-To: <200703122254.27087.sr@denx.de>
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.
next prev parent reply other threads:[~2007-03-13 4:56 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-12 21:54 [PATCH] ppc: Add support for bigger page sizes than 4KB on PPC44x Stefan Roese
2007-03-13 4:56 ` Paul Mackerras [this message]
2007-03-13 5:10 ` David Gibson
2007-03-13 7:12 ` Benjamin Herrenschmidt
2007-03-13 7:37 ` Stefan Roese
2007-03-13 9:37 ` Wolfgang Denk
2007-03-13 13:54 ` Benjamin Herrenschmidt
2007-03-13 9:42 ` Christoph Hellwig
2007-03-13 9:54 ` David Gibson
2007-03-13 14:00 ` Grant Likely
2007-03-13 14:09 ` Josh Boyer
2007-03-16 5:14 ` Paul Mackerras
-- strict thread matches above, loose matches on Subject: below --
2007-03-16 13:34 Yuri Tikhonov
2007-03-16 22:34 ` Paul Mackerras
2007-03-17 11:41 ` Yuri Tikhonov
2007-03-21 10:43 ` Paul Mackerras
2007-03-21 11:23 ` Yuri Tikhonov
2007-04-25 17:37 ` Yuri Tikhonov
2007-03-16 13:35 Yuri Tikhonov
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