The patch titled
x86: enable VMSPLIT for highmem kernels
has been removed from the -mm tree. Its filename is
x86-enable-vmsplit-for-highmem-kernels.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: x86: enable VMSPLIT for highmem kernels
From: Dave Hansen <haveblue@xxxxxxxxxx>
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@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
arch/i386/Kconfig | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff -puN arch/i386/Kconfig~x86-enable-vmsplit-for-highmem-kernels arch/i386/Kconfig
--- a/arch/i386/Kconfig~x86-enable-vmsplit-for-highmem-kernels
+++ a/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"
_
Patches currently in -mm which might be from haveblue@xxxxxxxxxx are
origin.patch
introduce-mechanism-for-registering-active-regions-of-memory.patch
have-power-use-add_active_range-and-free_area_init_nodes.patch
have-x86-use-add_active_range-and-free_area_init_nodes.patch
have-x86-use-add_active_range-and-free_area_init_nodes-fix.patch
have-x86_64-use-add_active_range-and-free_area_init_nodes.patch
have-ia64-use-add_active_range-and-free_area_init_nodes.patch
account-for-memmap-and-optionally-the-kernel-image-as-holes.patch
account-for-holes-that-are-outside-the-range-of-physical-memory.patch
allow-an-arch-to-expand-node-boundaries.patch
get-rid-of-zone_table.patch
get-rid-of-zone_table-fix.patch
kthread-drivers-base-firmware_classc.patch
pidspace-is_init.patch
fs-cache-make-kafs-use-fs-cache-fix.patch
r-o-bind-mount-prepare-for-write-access-checks-collapse-if.patch
r-o-bind-mount-prepwork-move-open_nameis-vfs_create.patch
r-o-bind-mount-unlink-monitor-i_nlink.patch
r-o-bind-mount-prepwork-inc_nlink-helper.patch
r-o-bind-mount-clean-up-ocfs2-nlink-handling-2.patch
r-o-bind-mount-monitor-zeroing-of-i_nlink.patch
pids-coding-style-use-struct-pidmap.patch
move-pidmap-to-pspaceh.patch
move-pidmap-to-pspaceh-fix.patch
define-struct-pspace.patch
page-owner-tracking-leak-detector.patch
x86-e820-debugging.patch
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