Blame - arch/um/Kconfig.i386 - kernel/msm-4.9

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Paolo 'Blaisorblade' Giarrusso	8597737	2005-11-13 16:07:06 -0800	[diff] [blame]	1	menu "Host processor type and features"
				2
Al Viro	7a78a17	2007-10-29 04:34:31 +0000	[diff] [blame]	3	source "arch/x86/Kconfig.cpu"
Paolo 'Blaisorblade' Giarrusso	8597737	2005-11-13 16:07:06 -0800	[diff] [blame]	4
				5	endmenu
				6
Paolo 'Blaisorblade' Giarrusso	c45166be3	2005-05-01 08:58:54 -0700	[diff] [blame]	7	config UML_X86
				8	bool
				9	default y
				10
Jeff Dike	54d67ee	2007-12-01 12:16:28 -0800	[diff] [blame]	11	config X86_32
				12	bool
				13	default y
				14
				15	config RWSEM_XCHGADD_ALGORITHM
				16	def_bool y
				17
Paolo 'Blaisorblade' Giarrusso	c45166be3	2005-05-01 08:58:54 -0700	[diff] [blame]	18	config 64BIT
Linus Torvalds	1da177e	2005-04-16 15:20:36 -0700	[diff] [blame]	19	bool
				20	default n
				21
Benjamin LaHaise	52fdd08	2005-09-03 15:56:52 -0700	[diff] [blame]	22	config SEMAPHORE_SLEEPERS
				23	bool
				24	default y
				25
Paolo 'Blaisorblade' Giarrusso	c21be1c	2006-10-11 01:21:42 -0700	[diff] [blame]	26	choice
				27	prompt "Host memory split"
				28	default HOST_VMSPLIT_3G
Jeff Dike	fe33f6f	2007-01-26 00:57:12 -0800	[diff] [blame]	29	help
				30	This is needed when the host kernel on which you run has a non-default
				31	(like 2G/2G) memory split, instead of the customary 3G/1G. If you did
				32	not recompile your own kernel but use the default distro's one, you can
				33	safely accept the "Default split" option.
Joris van Rantwijk	893bb96	2006-05-01 12:15:56 -0700	[diff] [blame]	34
Jeff Dike	fe33f6f	2007-01-26 00:57:12 -0800	[diff] [blame]	35	It can be enabled on recent (>=2.6.16-rc2) vanilla kernels via
				36	CONFIG_VM_SPLIT_*, or on previous kernels with special patches (-ck
				37	patchset by Con Kolivas, or other ones) - option names match closely the
				38	host CONFIG_VM_SPLIT_* ones.
Joris van Rantwijk	893bb96	2006-05-01 12:15:56 -0700	[diff] [blame]	39
Jeff Dike	fe33f6f	2007-01-26 00:57:12 -0800	[diff] [blame]	40	A lower setting (where 1G/3G is lowest and 3G/1G is higher) will
				41	tolerate even more "normal" host kernels, but an higher setting will be
				42	stricter.
Paolo 'Blaisorblade' Giarrusso	c21be1c	2006-10-11 01:21:42 -0700	[diff] [blame]	43
Jeff Dike	fe33f6f	2007-01-26 00:57:12 -0800	[diff] [blame]	44	So, if you do not know what to do here, say 'Default split'.
Paolo 'Blaisorblade' Giarrusso	c21be1c	2006-10-11 01:21:42 -0700	[diff] [blame]	45
Al Viro	b20c845	2007-01-30 13:23:40 +0000	[diff] [blame]	46	config HOST_VMSPLIT_3G
				47	bool "Default split (3G/1G user/kernel host split)"
				48	config HOST_VMSPLIT_3G_OPT
				49	bool "3G/1G user/kernel host split (for full 1G low memory)"
				50	config HOST_VMSPLIT_2G
				51	bool "2G/2G user/kernel host split"
				52	config HOST_VMSPLIT_1G
				53	bool "1G/3G user/kernel host split"
Paolo 'Blaisorblade' Giarrusso	c21be1c	2006-10-11 01:21:42 -0700	[diff] [blame]	54	endchoice
Joris van Rantwijk	893bb96	2006-05-01 12:15:56 -0700	[diff] [blame]	55
Linus Torvalds	1da177e	2005-04-16 15:20:36 -0700	[diff] [blame]	56	config TOP_ADDR
Paolo 'Blaisorblade' Giarrusso	c21be1c	2006-10-11 01:21:42 -0700	[diff] [blame]	57	hex
				58	default 0xB0000000 if HOST_VMSPLIT_3G_OPT
				59	default 0x78000000 if HOST_VMSPLIT_2G
				60	default 0x40000000 if HOST_VMSPLIT_1G
				61	default 0xC0000000
Linus Torvalds	1da177e	2005-04-16 15:20:36 -0700	[diff] [blame]	62
				63	config 3_LEVEL_PGTABLES
Paolo 'Blaisorblade' Giarrusso	ce2d2ae	2006-01-18 17:42:59 -0800	[diff] [blame]	64	bool "Three-level pagetables (EXPERIMENTAL)"
Linus Torvalds	1da177e	2005-04-16 15:20:36 -0700	[diff] [blame]	65	default n
Paolo 'Blaisorblade' Giarrusso	ce2d2ae	2006-01-18 17:42:59 -0800	[diff] [blame]	66	depends on EXPERIMENTAL
Linus Torvalds	1da177e	2005-04-16 15:20:36 -0700	[diff] [blame]	67	help
				68	Three-level pagetables will let UML have more than 4G of physical
				69	memory. All the memory that can't be mapped directly will be treated
				70	as high memory.
				71
Paolo 'Blaisorblade' Giarrusso	ce2d2ae	2006-01-18 17:42:59 -0800	[diff] [blame]	72	However, this it experimental on 32-bit architectures, so if unsure say
				73	N (on x86-64 it's automatically enabled, instead, as it's safe there).
				74
Linus Torvalds	1da177e	2005-04-16 15:20:36 -0700	[diff] [blame]	75	config ARCH_HAS_SC_SIGNALS
				76	bool
				77	default y
				78
				79	config ARCH_REUSE_HOST_VSYSCALL_AREA
				80	bool
				81	default y
Akinobu Mita	f214ef3	2006-03-26 01:38:59 -0800	[diff] [blame]	82
				83	config GENERIC_HWEIGHT
				84	bool
				85	default y
				86