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| author | Dave Hansen <haveblue@us.ibm.com> | 2006-09-25 23:32:29 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-09-26 08:48:56 -0700 |
| commit | 753b9f86e7aef76c2beda32668ce528f90cb1733 (patch) | |
| tree | 49b90d6553ae06058ece02fd3d005d5821c347ba | |
| parent | 5091e746848f74c9a2c0579b4ef8d8cd1a6b135d (diff) | |
| download | linux-753b9f86e7aef76c2beda32668ce528f90cb1733.tar.gz | |
[PATCH] x86: enable VMSPLIT for highmem kernels
The current VMSPLIT Kconfig option is disabled whenever highmem is on.
This is a bit screwy because the people who need to change VMSPLIT the most
tend to be the ones with highmem and constrained lowmem.
So, remove the highmem dependency. But, re-include the dependency for the
"full 1GB of lowmem" option. You can't have the full 1GB of lowmem and
highmem because of the need for the vmalloc(), kmap(), etc... areas.
I thought there would be at least a bit of tweaking to do to
get it to work, but everything seems OK.
Boot tested on a 4GB x86 machine, and a 12GB 3-node NUMA-Q:
elm3b82:~# cat /proc/meminfo
MemTotal: 3695412 kB
MemFree: 3659540 kB
...
LowTotal: 2909008 kB
LowFree: 2892324 kB
...
elm3b82:~# zgrep PAE /proc/config.gz
CONFIG_X86_PAE=y
larry:~# cat /proc/meminfo
MemTotal: 11845900 kB
MemFree: 11786748 kB
...
LowTotal: 2855180 kB
LowFree: 2830092 kB
Signed-off-by: Dave Hansen <haveblue@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | arch/i386/Kconfig | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/i386/Kconfig b/arch/i386/Kconfig index 1f83efb7a60efb..6189b0c28d6f5d 100644 --- a/arch/i386/Kconfig +++ b/arch/i386/Kconfig @@ -494,7 +494,7 @@ config HIGHMEM64G endchoice choice - depends on EXPERIMENTAL && !X86_PAE + depends on EXPERIMENTAL prompt "Memory split" if EMBEDDED default VMSPLIT_3G help @@ -516,6 +516,7 @@ choice config VMSPLIT_3G bool "3G/1G user/kernel split" config VMSPLIT_3G_OPT + depends on !HIGHMEM bool "3G/1G user/kernel split (for full 1G low memory)" config VMSPLIT_2G bool "2G/2G user/kernel split" |