linux-kernel - Re: [PATCH] FRV: Permit the memory to be located elsewhere in NOMMU mode

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 29 Oct 2007 09:28:28 -0700 (PDT)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	David Howells <dhowells@...hat.com>
cc:	akpm@...ux-foundation.org, rpjday@...shcourse.ca,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] FRV: Permit the memory to be located elsewhere in NOMMU
 mode



On Mon, 29 Oct 2007, David Howells wrote:
>  
> -__page_offset = 0xc0000000;		/* start of area covered by struct pages */
> +/* start of area covered by struct pages */
> +#if defined(CONFIG_UCPAGE_OFFSET_20000000)
> +__page_offset = 0x20000000;
> +#elif defined(CONFIG_UCPAGE_OFFSET_40000000)
> +__page_offset = 0x40000000;
...

Please don't do these kinds of things in the source code.

Do them in the Kconfig language where it belongs, and where it makes much 
more sense.

See, for example, arch/x86/Kconfig.i386:

	config PAGE_OFFSET
	        hex
	        default 0xB0000000 if VMSPLIT_3G_OPT
	        default 0x80000000 if VMSPLIT_2G
	        default 0x78000000 if VMSPLIT_2G_OPT
	        default 0x40000000 if VMSPLIT_1G
	        default 0xC0000000

Notice? Even the syntax is much cleaner!

		Linus
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/