From: "Jeff V. Merkey" <jmerkey@wolfmountaingroup.com>
To: Bernd Eckenfels <be-news06@lina.inka.de>
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH] Re: 2G memory split
Date: Tue, 10 Jan 2006 09:30:58 -0700 [thread overview]
Message-ID: <43C3E142.1080206@wolfmountaingroup.com> (raw)
In-Reply-To: <E1EwNc8-00063F-00@calista.inka.de>
[-- Attachment #1: Type: text/plain, Size: 817 bytes --]
Bernd Eckenfels wrote:
Here are the patches I use for the splitting. They work well. The
methods employed in Red Hat ES are far better and I am surprised
no one has simply integrated those patches into the kernel which are 4GB
/ 4GB kernel/user.
Jeff
>Mark Lord <lkml@rtr.ca> wrote:
>
>
>>So, the patch would now look like this:
>>
>>
>
>can we please state something what the 3G_OPT is suppsoed to do? Is this "optimzed for 1GB Real RAM"? Should this be something like "2.5G" instead?
>
>
>
>>+ config VMSPLIT_3G_OPT
>>+ bool "3G/1G user/kernel split (for full 1G low memory)"
>>
>>
>
>
>
>>+ default 0xC0000000
>>+ default 0xB0000000 if VMSPLIT_3G_OPT
>>+ default 0x78000000 if VMSPLIT_2G
>>+ default 0x40000000 if VMSPLIT_1G
>>
>>
>
>
>
[-- Attachment #2: linux-highmem-2.6.10-01-18-05.patch --]
[-- Type: text/x-patch, Size: 3487 bytes --]
diff -Naur ./arch/i386/Kconfig ../linux-2.6.10-ds/./arch/i386/Kconfig
--- ./arch/i386/Kconfig 2004-12-24 14:34:01.000000000 -0700
+++ ../linux-2.6.10-ds/./arch/i386/Kconfig 2005-01-18 11:43:27.096386256 -0700
@@ -730,6 +730,25 @@
depends on HIGHMEM64G
default y
+choice
+ prompt "User address space size"
+
+config USER_3GB
+ depends on X86
+ bool "3GB User Address Space"
+ default y if (X86)
+
+config USER_2GB
+ depends on X86
+ bool "2GB User Address Space"
+
+config USER_1GB
+ depends on X86
+ bool "1GB User Address Space"
+
+endchoice
+
+
# Common NUMA Features
config NUMA
bool "Numa Memory Allocation and Scheduler Support"
diff -Naur ./include/asm-generic/page_offset.h ../linux-2.6.10-ds/./include/asm-generic/page_offset.h
--- ./include/asm-generic/page_offset.h 1969-12-31 17:00:00.000000000 -0700
+++ ../linux-2.6.10-ds/./include/asm-generic/page_offset.h 2005-01-18 11:43:27.000000000 -0700
@@ -0,0 +1,24 @@
+
+#include <linux/config.h>
+
+#ifdef __ASSEMBLY__
+
+#if defined(CONFIG_USER_1GB)
+#define PAGE_OFFSET_RAW 0x40000000
+#elif defined(CONFIG_USER_2GB)
+#define PAGE_OFFSET_RAW 0x80000000
+#elif defined(CONFIG_USER_3GB)
+#define PAGE_OFFSET_RAW 0xC0000000
+#endif
+
+#else
+
+#if defined(CONFIG_USER_1GB)
+#define PAGE_OFFSET_RAW 0x40000000UL
+#elif defined(CONFIG_USER_2GB)
+#define PAGE_OFFSET_RAW 0x80000000UL
+#elif defined(CONFIG_USER_3GB)
+#define PAGE_OFFSET_RAW 0xC0000000UL
+#endif
+
+#endif
diff -Naur ./include/asm-generic/vmlinux.lds.h ../linux-2.6.10-ds/./include/asm-generic/vmlinux.lds.h
--- ./include/asm-generic/vmlinux.lds.h 2004-12-24 14:33:50.000000000 -0700
+++ ../linux-2.6.10-ds/./include/asm-generic/vmlinux.lds.h 2005-01-18 11:43:27.000000000 -0700
@@ -1,3 +1,6 @@
+
+#include <asm-generic/page_offset.h>
+
#ifndef LOAD_OFFSET
#define LOAD_OFFSET 0
#endif
diff -Naur ./include/asm-i386/page.h ../linux-2.6.10-ds/./include/asm-i386/page.h
--- ./include/asm-i386/page.h 2004-12-24 14:34:01.000000000 -0700
+++ ../linux-2.6.10-ds/./include/asm-i386/page.h 2005-01-18 11:43:27.000000000 -0700
@@ -121,9 +121,11 @@
#endif /* __ASSEMBLY__ */
#ifdef __ASSEMBLY__
-#define __PAGE_OFFSET (0xC0000000)
+#include <asm-generic/page_offset.h>
+#define __PAGE_OFFSET (PAGE_OFFSET_RAW)
#else
-#define __PAGE_OFFSET (0xC0000000UL)
+#include <asm-generic/page_offset.h>
+#define __PAGE_OFFSET (PAGE_OFFSET_RAW)
#endif
diff -Naur ./mem.err ../linux-2.6.10-ds/./mem.err
--- ./mem.err 1969-12-31 17:00:00.000000000 -0700
+++ ../linux-2.6.10-ds/./mem.err 2005-01-18 11:43:27.000000000 -0700
@@ -0,0 +1,7 @@
+patching file arch/i386/Kconfig
+Hunk #1 succeeded at 730 (offset 6 lines).
+patching file include/asm-generic/page_offset.h
+patching file include/asm-generic/vmlinux.lds.h
+patching file include/asm-i386/page.h
+patching file mm/memory.c
+Hunk #1 succeeded at 120 (offset 1 line).
diff -Naur ./mm/memory.c ../linux-2.6.10-ds/./mm/memory.c
--- ./mm/memory.c 2005-01-18 11:25:26.000000000 -0700
+++ ../linux-2.6.10-ds/./mm/memory.c 2005-01-18 11:43:27.000000000 -0700
@@ -120,8 +120,7 @@
static inline void free_one_pgd(struct mmu_gather *tlb, pgd_t * dir)
{
- int j;
- pmd_t * pmd;
+ pmd_t *pmd, *md, *emd;
if (pgd_none(*dir))
return;
@@ -132,8 +131,8 @@
}
pmd = pmd_offset(dir, 0);
pgd_clear(dir);
- for (j = 0; j < PTRS_PER_PMD ; j++)
- free_one_pmd(tlb, pmd+j);
+ for (md = pmd, emd = pmd + PTRS_PER_PMD; md < emd; md++)
+ free_one_pmd(tlb, md);
pmd_free_tlb(tlb, pmd);
}
[-- Attachment #3: linux-highmem-split-2.6.9-10-18-04.patch --]
[-- Type: text/x-patch, Size: 3018 bytes --]
diff -Naur ./arch/i386/Kconfig ../linux-2.6.9-mdb/./arch/i386/Kconfig
--- ./arch/i386/Kconfig 2004-10-18 15:53:22.000000000 -0600
+++ ../linux-2.6.9-mdb/./arch/i386/Kconfig 2004-10-18 11:52:51.529009552 -0600
@@ -724,6 +724,25 @@
depends on HIGHMEM64G
default y
+choice
+ prompt "User address space size"
+
+config USER_3GB
+ depends on X86
+ bool "3GB User Address Space"
+ default y if (X86)
+
+config USER_2GB
+ depends on X86
+ bool "2GB User Address Space"
+
+config USER_1GB
+ depends on X86
+ bool "1GB User Address Space"
+
+endchoice
+
+
# Common NUMA Features
config NUMA
bool "Numa Memory Allocation and Scheduler Support"
diff -Naur ./include/asm-generic/page_offset.h ../linux-2.6.9-mdb/./include/asm-generic/page_offset.h
--- ./include/asm-generic/page_offset.h 1969-12-31 17:00:00.000000000 -0700
+++ ../linux-2.6.9-mdb/./include/asm-generic/page_offset.h 2004-10-18 11:52:51.530009400 -0600
@@ -0,0 +1,24 @@
+
+#include <linux/config.h>
+
+#ifdef __ASSEMBLY__
+
+#if defined(CONFIG_USER_1GB)
+#define PAGE_OFFSET_RAW 0x40000000
+#elif defined(CONFIG_USER_2GB)
+#define PAGE_OFFSET_RAW 0x80000000
+#elif defined(CONFIG_USER_3GB)
+#define PAGE_OFFSET_RAW 0xC0000000
+#endif
+
+#else
+
+#if defined(CONFIG_USER_1GB)
+#define PAGE_OFFSET_RAW 0x40000000UL
+#elif defined(CONFIG_USER_2GB)
+#define PAGE_OFFSET_RAW 0x80000000UL
+#elif defined(CONFIG_USER_3GB)
+#define PAGE_OFFSET_RAW 0xC0000000UL
+#endif
+
+#endif
diff -Naur ./include/asm-generic/vmlinux.lds.h ../linux-2.6.9-mdb/./include/asm-generic/vmlinux.lds.h
--- ./include/asm-generic/vmlinux.lds.h 2004-10-18 15:53:08.000000000 -0600
+++ ../linux-2.6.9-mdb/./include/asm-generic/vmlinux.lds.h 2004-10-18 11:52:51.545007120 -0600
@@ -1,3 +1,6 @@
+
+#include <asm-generic/page_offset.h>
+
#ifndef LOAD_OFFSET
#define LOAD_OFFSET 0
#endif
diff -Naur ./include/asm-i386/page.h ../linux-2.6.9-mdb/./include/asm-i386/page.h
--- ./include/asm-i386/page.h 2004-10-18 15:53:22.000000000 -0600
+++ ../linux-2.6.9-mdb/./include/asm-i386/page.h 2004-10-18 11:52:51.545007120 -0600
@@ -121,9 +121,11 @@
#endif /* __ASSEMBLY__ */
#ifdef __ASSEMBLY__
-#define __PAGE_OFFSET (0xC0000000)
+#include <asm-generic/page_offset.h>
+#define __PAGE_OFFSET (PAGE_OFFSET_RAW)
#else
-#define __PAGE_OFFSET (0xC0000000UL)
+#include <asm-generic/page_offset.h>
+#define __PAGE_OFFSET (PAGE_OFFSET_RAW)
#endif
diff -Naur ./mm/memory.c ../linux-2.6.9-mdb/./mm/memory.c
--- ./mm/memory.c 2004-10-18 11:46:59.000000000 -0600
+++ ../linux-2.6.9-mdb/./mm/memory.c 2004-10-18 11:52:51.547006816 -0600
@@ -119,8 +119,7 @@
static inline void free_one_pgd(struct mmu_gather *tlb, pgd_t * dir)
{
- int j;
- pmd_t * pmd;
+ pmd_t *pmd, *md, *emd;
if (pgd_none(*dir))
return;
@@ -131,8 +130,8 @@
}
pmd = pmd_offset(dir, 0);
pgd_clear(dir);
- for (j = 0; j < PTRS_PER_PMD ; j++)
- free_one_pmd(tlb, pmd+j);
+ for (md = pmd, emd = pmd + PTRS_PER_PMD; md < emd; md++)
+ free_one_pmd(tlb, md);
pmd_free_tlb(tlb, pmd);
}
next prev parent reply other threads:[~2006-01-10 18:15 UTC|newest]
Thread overview: 87+ 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
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 ` Jeff V. Merkey [this message]
2006-01-10 18:50 ` [PATCH] " 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
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