mirror of
https://github.com/torvalds/linux.git
synced 2024-11-15 16:41:58 +00:00
19870def58
Introduce GENERIC_FIND_FIRST_BIT and GENERIC_FIND_NEXT_BIT in lib/Kconfig, defaulting to off. An arch that wants to use the generic implementation now only has to use a select statement to include them. I added an always-y option (X86_CPU) to arch/x86/Kconfig.cpu and used that to select the generic search functions. This way ARCH=um SUBARCH=i386 automatically picks up the change too, and arch/um/Kconfig.i386 can therefore be simplified a bit. ARCH=um SUBARCH=x86_64 does things differently, but still compiles fine. It seems that a "def_bool y" always wins over a "def_bool n"? Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm> Signed-off-by: Ingo Molnar <mingo@elte.hu>
48 lines
826 B
Plaintext
48 lines
826 B
Plaintext
menu "Host processor type and features"
|
|
|
|
source "arch/x86/Kconfig.cpu"
|
|
|
|
endmenu
|
|
|
|
config UML_X86
|
|
bool
|
|
default y
|
|
|
|
config X86_32
|
|
bool
|
|
default y
|
|
|
|
config RWSEM_XCHGADD_ALGORITHM
|
|
def_bool y
|
|
|
|
config 64BIT
|
|
bool
|
|
default n
|
|
|
|
config 3_LEVEL_PGTABLES
|
|
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 ARCH_HAS_SC_SIGNALS
|
|
bool
|
|
default y
|
|
|
|
config ARCH_REUSE_HOST_VSYSCALL_AREA
|
|
bool
|
|
default y
|
|
|
|
config GENERIC_HWEIGHT
|
|
bool
|
|
default y
|
|
|
|
config ARCH_SUPPORTS_AOUT
|
|
def_bool y
|