+menu "Host processor type and features"
+
+source "arch/i386/Kconfig.cpu"
+
+endmenu
+
config UML_X86
bool
default y
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
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
+ 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
bool
default y
-config X86_CMPXCHG
+config GENERIC_HWEIGHT
bool
default y
+