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Subject[PATCH 7/9] uml: arch Kconfig menu cleanups
Date

*) mark as "EXPERIMENTAL" various items that either aren't very stable or that
are actively crashing the setup of users which don't really need them (i.e.
HIGHMEM and 3-level pagetables on x86 - nobody needs either, everybody reports
"I'm using it and getting trouble").

*) move net/Kconfig near to the rest of network configurations, and
drivers/block/Kconfig near "Block layer" submenu.

*) it's useless and doesn't work well to force NETDEVICES on and to disable the
prompt like it's done. Better remove the attempt, and change that to a simple
"default y if UML".

*) drop the warning about "report problems about HPPFS" - it's redundant
anyway, as that's the usual procedure, and HPPFS users are especially technical
(i.e. they know reporting bugs is _good_).

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
---

arch/um/Kconfig | 27 ++++++++++++++-------------
arch/um/Kconfig.i386 | 6 +++++-
drivers/net/Kconfig | 1 +
3 files changed, 20 insertions(+), 14 deletions(-)

diff --git a/arch/um/Kconfig b/arch/um/Kconfig
index 8ff3bcb..5982fe2 100644
--- a/arch/um/Kconfig
+++ b/arch/um/Kconfig
@@ -143,6 +143,7 @@ config HOSTFS

config HPPFS
tristate "HoneyPot ProcFS (EXPERIMENTAL)"
+ depends on EXPERIMENTAL
help
hppfs (HoneyPot ProcFS) is a filesystem which allows UML /proc
entries to be overridden, removed, or fabricated from the host.
@@ -155,10 +156,6 @@ config HPPFS
You only need this if you are setting up a UML honeypot. Otherwise,
it is safe to say 'N' here.

- If you are actively using it, please report any problems, since it's
- getting fixed. In this moment, it is experimental on 2.6 (it works on
- 2.4).
-
config MCONSOLE
bool "Management console"
default y
@@ -243,8 +240,16 @@ config NEST_LEVEL
Only change this if you are running nested UMLs.

config HIGHMEM
- bool "Highmem support"
- depends on !64BIT
+ bool "Highmem support (EXPERIMENTAL)"
+ depends on !64BIT && EXPERIMENTAL
+ default n
+ help
+ This was used to allow UML to run with big amounts of memory.
+ Currently it is unstable, so if unsure say N.
+
+ To use big amounts of memory, it is recommended to disable TT mode (i.e.
+ CONFIG_MODE_TT) and enable static linking (i.e. CONFIG_STATIC_LINK) -
+ this should allow the guest to use up to 2.75G of memory.

config KERNEL_STACK_ORDER
int "Kernel stack size order"
@@ -269,17 +274,13 @@ endmenu

source "init/Kconfig"

-source "net/Kconfig"
-
-source "drivers/base/Kconfig"
+source "drivers/block/Kconfig"

source "arch/um/Kconfig.char"

-source "drivers/block/Kconfig"
+source "drivers/base/Kconfig"

-config NETDEVICES
- bool
- default NET
+source "net/Kconfig"

source "arch/um/Kconfig.net"

diff --git a/arch/um/Kconfig.i386 b/arch/um/Kconfig.i386
index c71b39a..ef79ed2 100644
--- a/arch/um/Kconfig.i386
+++ b/arch/um/Kconfig.i386
@@ -22,13 +22,17 @@ config TOP_ADDR
default 0x80000000 if HOST_2G_2G

config 3_LEVEL_PGTABLES
- bool "Three-level pagetables"
+ bool "Three-level pagetables (EXPERIMENTAL)"
default n
+ depends on EXPERIMENTAL
help
Three-level pagetables will let UML have more than 4G of physical
memory. All the memory that can't be mapped directly will be treated
as high memory.

+ However, this it experimental on 32-bit architectures, so if unsure say
+ N (on x86-64 it's automatically enabled, instead, as it's safe there).
+
config STUB_CODE
hex
default 0xbfffe000
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 1421941..c0f9351 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -7,6 +7,7 @@ menu "Network device support"

config NETDEVICES
depends on NET
+ default y if UML
bool "Network device support"
---help---
You can say N here if you don't intend to connect your Linux box to
-
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