[PATCH] uml: skas0 support for 2G/2G hosts

A quick hack to allow skas0 mode to run on 2G/2G hosts.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 17 insertions, 2 deletions

diff --git a/arch/um/Kconfig.i386 b/arch/um/Kconfig.i386
index 85e6a55b3b59..f6eb72d117b9 100644
--- a/arch/um/Kconfig.i386
+++ b/arch/um/Kconfig.i386
@@ -16,6 +16,19 @@ config SEMAPHORE_SLEEPERS
         bool
         default y
 
+config HOST_2G_2G
+        bool "2G/2G host address space split"
+        default n
+        help
+        This is needed when the host on which you run has a 2G/2G memory
+        split, instead of the customary 3G/1G.
+
+        Note that to enable such a host
+        configuration, which makes sense only in some cases, you need special
+        host patches.
+
+        So, if you do not know what to do here, say 'N'.
+
 config TOP_ADDR
         hex
         default 0xc0000000 if !HOST_2G_2G
@@ -35,11 +48,13 @@ config 3_LEVEL_PGTABLES
 
 config STUB_CODE
         hex
-        default 0xbfffe000
+        default 0xbfffe000 if !HOST_2G_2G
+        default 0x7fffe000 if HOST_2G_2G
 
 config STUB_DATA
         hex
-        default 0xbffff000
+        default 0xbffff000 if !HOST_2G_2G
+        default 0x7ffff000 if HOST_2G_2G
 
 config STUB_START
         hex