From: Herbert Poetzl <herbert@13thfloor.at>
To: lkml <linux-kernel@vger.kernel.org>
Cc: gigag@bezeqint.net
Subject: Re: Patch for 3.5/0.5 address space split
Date: Sun, 6 Jul 2003 22:18:44 +0200 [thread overview]
Message-ID: <20030706201843.GC24753@www.13thfloor.at> (raw)
In-Reply-To: <26930000.1057510039@[10.10.2.4]>
On Sun, Jul 06, 2003 at 09:47:20AM -0700, Martin J. Bligh wrote:
> > Could anybody point out to patches available for 3.5/0.5 address
> > space split for 2.4 and 2.5 kernels?
>
> It's in 2.4-aa and 2.5-mjb trees. 2.5 has the added feature that it
> can now do that for PAE (> 4GB) machines (from Dave Hansen).
>
> > Any other working options? I managed to compile 2.4.21 kernel
> > with 1/3 split, but not with 0.5/3.5. The last one simply doesn't
> > boot. What could I be doing wrong?
>
> You can chage PAGE_OFFSET yourself, but there's a few places to change
> it ... do a grep -r for "C0000000", and hack all those - one of them
> is in some .lds file or something, I forget.
I change it to use QEMU an x86 emulator ...
arch/i386/vmlinux.lds
include/asm-i386/page.h
the following patch changes it from 0xC0000000 to 0x90000000
HTH,
Herbert
diff -NurbP --minimal linux-2.4.21-P1/arch/i386/vmlinux.lds linux-2.4.21-P1-qemu/arch/i386/vmlinux.lds
--- linux-2.4.21-P1/arch/i386/vmlinux.lds Mon Feb 25 20:37:53 2002
+++ linux-2.4.21-P1-qemu/arch/i386/vmlinux.lds Fri Jun 27 15:48:35 2003
@@ -6,7 +6,7 @@
ENTRY(_start)
SECTIONS
{
- . = 0xC0000000 + 0x100000;
+ . = 0x90000000 + 0x100000;
_text = .; /* Text and read-only data */
.text : {
*(.text)
diff -NurbP --minimal linux-2.4.21-P1/include/asm-i386/page.h linux-2.4.21-P1-qemu/include/asm-i386/page.h
--- linux-2.4.21-P1/include/asm-i386/page.h Thu Jun 26 23:40:59 2003
+++ linux-2.4.21-P1-qemu/include/asm-i386/page.h Fri Jun 27 15:47:52 2003
@@ -78,7 +78,7 @@
* and CONFIG_HIGHMEM64G options in the kernel configuration.
*/
-#define __PAGE_OFFSET (0xC0000000)
+#define __PAGE_OFFSET (0x90000000)
/*
* This much address space is reserved for vmalloc() and iomap()
>
> M.
>
> -
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next prev parent reply other threads:[~2003-07-06 20:04 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-07-06 15:25 gigag
2003-07-06 15:47 ` Kirill Korotaev
2003-07-07 16:02 ` Martin Waitz
2003-07-06 16:47 ` Martin J. Bligh
2003-07-06 20:18 ` Herbert Poetzl [this message]
2003-07-06 16:00 gigag
2003-07-06 16:07 ` Brian Jackson
2003-07-08 12:07 gigag
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