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b0b933c08b
Mark arches that support A.OUT format by including the following in their master Kconfig files: config ARCH_SUPPORTS_AOUT def_bool y This should also be set if the arch provides compatibility A.OUT support for an older arch, for instance x86_64 for i386 or sparc64 for sparc. I've guessed at which arches don't, based on comments in the code, however I'm sure that some of the ones I've marked as 'yes' actually should be 'no'. Signed-off-by: David Howells <dhowells@redhat.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
89 lines
2.1 KiB
Plaintext
89 lines
2.1 KiB
Plaintext
menu "Host processor type and features"
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source "arch/x86/Kconfig.cpu"
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endmenu
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config UML_X86
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bool
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default y
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config X86_32
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bool
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default y
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config RWSEM_XCHGADD_ALGORITHM
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def_bool y
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config 64BIT
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bool
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default n
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config SEMAPHORE_SLEEPERS
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bool
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default y
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choice
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prompt "Host memory split"
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default HOST_VMSPLIT_3G
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help
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This is needed when the host kernel on which you run has a non-default
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(like 2G/2G) memory split, instead of the customary 3G/1G. If you did
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not recompile your own kernel but use the default distro's one, you can
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safely accept the "Default split" option.
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It can be enabled on recent (>=2.6.16-rc2) vanilla kernels via
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CONFIG_VM_SPLIT_*, or on previous kernels with special patches (-ck
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patchset by Con Kolivas, or other ones) - option names match closely the
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host CONFIG_VM_SPLIT_* ones.
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A lower setting (where 1G/3G is lowest and 3G/1G is higher) will
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tolerate even more "normal" host kernels, but an higher setting will be
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stricter.
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So, if you do not know what to do here, say 'Default split'.
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config HOST_VMSPLIT_3G
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bool "Default split (3G/1G user/kernel host split)"
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config HOST_VMSPLIT_3G_OPT
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bool "3G/1G user/kernel host split (for full 1G low memory)"
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config HOST_VMSPLIT_2G
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bool "2G/2G user/kernel host split"
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config HOST_VMSPLIT_1G
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bool "1G/3G user/kernel host split"
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endchoice
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config TOP_ADDR
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hex
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default 0xB0000000 if HOST_VMSPLIT_3G_OPT
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default 0x78000000 if HOST_VMSPLIT_2G
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default 0x40000000 if HOST_VMSPLIT_1G
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default 0xC0000000
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config 3_LEVEL_PGTABLES
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bool "Three-level pagetables (EXPERIMENTAL)"
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default n
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depends on EXPERIMENTAL
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help
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Three-level pagetables will let UML have more than 4G of physical
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memory. All the memory that can't be mapped directly will be treated
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as high memory.
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However, this it experimental on 32-bit architectures, so if unsure say
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N (on x86-64 it's automatically enabled, instead, as it's safe there).
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config ARCH_HAS_SC_SIGNALS
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bool
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default y
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config ARCH_REUSE_HOST_VSYSCALL_AREA
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bool
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default y
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config GENERIC_HWEIGHT
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bool
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default y
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config ARCH_SUPPORTS_AOUT
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def_bool y
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