From: Herbert Poetzl <herbert@13thfloor.at>
To: Mark Lord <lkml@rtr.ca>
Cc: Jens Axboe <axboe@suse.de>, Linus Torvalds <torvalds@osdl.org>,
Byron Stanoszek <gandalf@winds.org>, Ingo Molnar <mingo@elte.hu>,
linux-kernel@vger.kernel.org, Andrew Morton <akpm@osdl.org>
Subject: Re: [PATCH ] VMSPLIT config options (with default config fixed)
Date: Wed, 1 Feb 2006 23:23:14 +0100 [thread overview]
Message-ID: <20060201222314.GA26081@MAIL.13thfloor.at> (raw)
In-Reply-To: <43C40803.2000106@rtr.ca>
On Tue, Jan 10, 2006 at 02:16:19PM -0500, Mark Lord wrote:
> Okay, fixed the ordering of the "default" lines
> so that the Kconfig actually works correctly.
>
> Best for Andrew to soak this one in -mm.
glad to see that the linux kernel is now ready for
the 'idea' I submitted a patch[1] for, more than a
year ago -- which unfortunately went unnoticed back
then ...
cheers to Jens and Mark!
best,
Herbert
[1] http://lkml.org/lkml/2004/10/9/126
> Signed-off-by: Mark Lord <mlord@pobox.com>
>
> diff -u --recursive --new-file --exclude='.*'
> linux-2.6.15/arch/i386/Kconfig linux/arch/i386/Kconfig
> --- linux-2.6.15/arch/i386/Kconfig 2006-01-02 22:21:10.000000000 -0500
> +++ linux/arch/i386/Kconfig 2006-01-10 12:02:40.000000000 -0500
> @@ -448,6 +448,43 @@
>
> endchoice
>
> +choice
> + depends on EXPERIMENTAL && !X86_PAE
> + prompt "Memory split"
> + default VMSPLIT_3G
> + help
> + Select the desired split between kernel and user memory.
> +
> + If the address range available to the kernel is less than the
> + physical memory installed, the remaining memory will be available
> + as "high memory". Accessing high memory is a little more costly
> + than low memory, as it needs to be mapped into the kernel first.
> + Note that increasing the kernel address space limits the range
> + available to user programs, making the address space there
> + tighter. Selecting anything other than the default 3G/1G split
> + will also likely make your kernel incompatible with binary-only
> + kernel modules.
> +
> + If you are not absolutely sure what you are doing, leave this
> + option alone!
> +
> + config VMSPLIT_3G
> + bool "3G/1G user/kernel split"
> + config VMSPLIT_3G_OPT
> + bool "3G/1G user/kernel split (for full 1G low memory)"
> + config VMSPLIT_2G
> + bool "2G/2G user/kernel split"
> + config VMSPLIT_1G
> + bool "1G/3G user/kernel split"
> +endchoice
> +
> +config PAGE_OFFSET
> + hex
> + default 0xB0000000 if VMSPLIT_3G_OPT
> + default 0x78000000 if VMSPLIT_2G
> + default 0x40000000 if VMSPLIT_1G
> + default 0xC0000000
> +
> config HIGHMEM
> bool
> depends on HIGHMEM64G || HIGHMEM4G
> diff -u --recursive --new-file --exclude='.*'
> linux-2.6.15/include/asm-i386/page.h linux/include/asm-i386/page.h
> --- linux-2.6.15/include/asm-i386/page.h 2006-01-02
> 22:21:10.000000000 -0500
> +++ linux/include/asm-i386/page.h 2006-01-10 12:04:56.000000000 -0500
> @@ -110,10 +110,10 @@
> #endif /* __ASSEMBLY__ */
>
> #ifdef __ASSEMBLY__
> -#define __PAGE_OFFSET (0xC0000000)
> +#define __PAGE_OFFSET CONFIG_PAGE_OFFSET
> #define __PHYSICAL_START CONFIG_PHYSICAL_START
> #else
> -#define __PAGE_OFFSET (0xC0000000UL)
> +#define __PAGE_OFFSET ((unsigned long)CONFIG_PAGE_OFFSET)
> #define __PHYSICAL_START ((unsigned long)CONFIG_PHYSICAL_START)
> #endif
> #define __KERNEL_START (__PAGE_OFFSET + __PHYSICAL_START)
> -
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> Please read the FAQ at http://www.tux.org/lkml/
next prev parent reply other threads:[~2006-02-01 22:23 UTC|newest]
Thread overview: 89+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-10 12:58 2G memory split Jens Axboe
2006-01-10 13:29 ` Ingo Molnar
2006-01-10 13:37 ` Jens Axboe
2006-01-10 13:43 ` Byron Stanoszek
2006-01-10 13:47 ` Jens Axboe
2006-01-10 14:39 ` Jens Axboe
2006-01-10 14:44 ` Ingo Molnar
2006-01-10 15:03 ` [PATCH] Address space split configuration Jens Axboe
2006-01-10 15:11 ` Mark Lord
2006-01-10 15:24 ` Mikael Pettersson
2006-01-10 16:14 ` 2G memory split Linus Torvalds
2006-01-10 16:40 ` Mark Lord
2006-01-10 16:52 ` Linus Torvalds
2006-01-10 18:33 ` Coywolf Qi Hunt
2006-01-10 17:07 ` Mark Lord
2006-01-10 17:28 ` Linus Torvalds
2006-01-10 17:32 ` Jens Axboe
2006-01-10 17:37 ` Mark Lord
2006-01-10 18:58 ` Mark Lord
2006-01-10 19:16 ` [PATCH ] VMSPLIT config options (with default config fixed) Mark Lord
2006-01-10 17:37 ` Jeff V. Merkey
2006-01-10 19:27 ` Jens Axboe
2006-01-11 1:13 ` J.A. Magallon
2006-01-11 10:15 ` Jens Axboe
2006-01-11 16:00 ` Greg Norris
2006-01-11 17:13 ` Mark Lord
2006-01-11 17:44 ` Greg Norris
2006-02-05 18:42 ` Barry K. Nathan
2006-02-01 22:23 ` Herbert Poetzl [this message]
2006-02-02 11:04 ` Ulrich Mueller
2006-02-02 20:55 ` Jan Engelhardt
2006-02-03 22:39 ` Mark Lord
2006-02-04 10:23 ` Ulrich Mueller
2006-02-04 11:06 ` Jan Engelhardt
2006-02-04 10:36 ` Jens Axboe
2006-02-04 11:05 ` Jan Engelhardt
2006-02-04 13:57 ` Mark Lord
2006-02-05 15:32 ` J.A. Magallon
2006-02-05 15:38 ` Arjan van de Ven
2006-02-05 21:14 ` Jan Engelhardt
2006-02-05 21:19 ` Arjan van de Ven
2006-02-06 14:56 ` Jan Engelhardt
2006-02-07 0:41 ` Herbert Poetzl
2006-02-07 2:51 ` Mark Rustad
2006-02-07 9:38 ` Bernd Petrovitsch
2006-02-07 12:19 ` RFC: add an ADVANCED_USER option Adrian Bunk
2006-02-07 14:05 ` Ulrich Mueller
2006-02-07 14:42 ` Adrian Bunk
2006-02-09 16:06 ` Jan Engelhardt
2006-01-10 17:48 ` 2G memory split Bernd Eckenfels
2006-01-10 16:30 ` [PATCH] " Jeff V. Merkey
2006-01-10 18:50 ` Lennart Sorensen
2006-01-10 17:13 ` Jeff V. Merkey
2006-01-10 19:42 ` Jens Axboe
2006-01-10 20:17 ` Bernd Eckenfels
2006-01-10 20:28 ` Jens Axboe
2006-01-11 8:39 ` Bernd Eckenfels
2006-01-11 10:06 ` Jens Axboe
2006-01-10 18:14 ` Martin Bligh
2006-01-10 18:34 ` Linus Torvalds
2006-01-10 16:56 ` Jeff V. Merkey
2006-01-10 17:01 ` Jeff V. Merkey
2006-01-10 18:45 ` Mark Lord
2006-01-10 18:46 ` Martin Bligh
2006-01-10 18:58 ` Jens Axboe
2006-01-10 17:17 ` Jeff V. Merkey
2006-01-10 20:55 ` Alan Cox
2006-01-10 19:12 ` Jeff V. Merkey
2006-01-10 21:02 ` Jens Axboe
2006-01-10 19:30 ` Jeff V. Merkey
2006-01-10 18:39 ` Martin Bligh
2006-01-10 18:55 ` Dave Hansen
2006-01-10 19:01 ` Mark Lord
2006-01-10 19:05 ` Dave Hansen
2006-01-10 17:07 ` Sergey Vlasov
2006-04-10 14:11 ` Kirill Korotaev
2006-04-10 14:39 ` Mark Lord
2006-01-10 18:28 ` Coywolf Qi Hunt
2006-01-10 13:47 ` Mikael Pettersson
2006-01-10 13:54 ` Jens Axboe
2006-01-10 14:09 ` Gerd Hoffmann
2006-01-10 14:21 ` Jens Axboe
2006-01-10 14:25 ` Jens Axboe
2006-01-10 20:42 ` Jan Engelhardt
2006-01-11 0:25 ` Con Kolivas
2006-01-10 14:12 ` Mark Lord
2006-01-10 14:22 ` Jens Axboe
[not found] <5trTo-7aS-25@gated-at.bofh.it>
[not found] ` <5trTo-7aS-23@gated-at.bofh.it>
[not found] ` <5ts37-7nG-23@gated-at.bofh.it>
[not found] ` <5tsZ0-lL-3@gated-at.bofh.it>
[not found] ` <5tuor-2zh-63@gated-at.bofh.it>
[not found] ` <5tvaL-3MA-77@gated-at.bofh.it>
[not found] ` <5tvDG-4nl-47@gated-at.bofh.it>
[not found] ` <5tvDF-4nl-45@gated-at.bofh.it>
[not found] ` <5twTa-6cF-25@gated-at.bofh.it>
[not found] ` <5txcv-6OX-31@gated-at.bofh.it>
[not found] ` <5ByEo-3fj-7@gated-at.bofh.it>
[not found] ` <5BKvR-3gt-25@gated-at.bofh.it>
[not found] ` <5BTJ2-fP-3@gated-at.bofh.it>
[not found] ` <5ChUM-2f8-21@gated-at.bofh.it>
[not found] ` <5CtsV-1zF-3@gated-at.bofh.it>
2006-02-05 20:20 ` [PATCH ] VMSPLIT config options (with default config fixed) Bodo Eggert
2006-02-05 22:13 ` Jeff Dike
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