VisionFive2 Linux kernel

ec8f24b7faaf3 (Thomas Gleixner       2019-05-19 13:07:45 +0100   1) # SPDX-License-Identifier: GPL-2.0-only
006477f40d2e7 (Christoph Hellwig     2018-07-31 13:39:34 +0200   2) 
006477f40d2e7 (Christoph Hellwig     2018-07-31 13:39:34 +0200   3) menu "Executable file formats"
006477f40d2e7 (Christoph Hellwig     2018-07-31 13:39:34 +0200   4) 
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700   5) config BINFMT_ELF
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700   6) 	bool "Kernel support for ELF binaries"
a687a5337063a (Arnd Bergmann         2018-03-07 23:30:54 +0100   7) 	depends on MMU
f43edca7ed08f (Ralf Baechle          2016-05-23 16:22:26 -0700   8) 	select ELFCORE
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700   9) 	default y
a7f7f6248d974 (Masahiro Yamada       2020-06-14 01:50:22 +0900  10) 	help
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700  11) 	  ELF (Executable and Linkable Format) is a format for libraries and
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700  12) 	  executables used across different architectures and operating
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700  13) 	  systems. Saying Y here will enable your kernel to run ELF binaries
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700  14) 	  and enlarge it by about 13 KB. ELF support under Linux has now all
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700  15) 	  but replaced the traditional Linux a.out formats (QMAGIC and ZMAGIC)
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700  16) 	  because it is portable (this does *not* mean that you will be able
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700  17) 	  to run executables from different architectures or operating systems
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700  18) 	  however) and makes building run-time libraries very easy. Many new
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700  19) 	  executables are distributed solely in ELF format. You definitely
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700  20) 	  want to say Y here.
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700  21) 
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700  22) 	  Information about ELF is contained in the ELF HOWTO available from
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700  23) 	  <http://www.tldp.org/docs.html#howto>.
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700  24) 
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700  25) 	  If you find that after upgrading from Linux kernel 1.2 and saying Y
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700  26) 	  here, you still can't run any ELF binaries (they just crash), then
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700  27) 	  you'll have to install the newest ELF runtime libraries, including
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700  28) 	  ld.so (check the file <file:Documentation/Changes> for location and
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700  29) 	  latest version).
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700  30) 
b9d36d5d00029 (Roland McGrath        2008-01-30 13:31:46 +0100  31) config COMPAT_BINFMT_ELF
41026c343540e (Al Viro               2020-12-02 23:56:34 -0500  32) 	def_bool y
4cea5ceb4c692 (Alexey Dobriyan       2008-10-15 22:04:17 -0700  33) 	depends on COMPAT && BINFMT_ELF
f43edca7ed08f (Ralf Baechle          2016-05-23 16:22:26 -0700  34) 	select ELFCORE
b9d36d5d00029 (Roland McGrath        2008-01-30 13:31:46 +0100  35) 
774c105ed8d79 (Paul Burton           2014-09-11 08:30:16 +0100  36) config ARCH_BINFMT_ELF_STATE
774c105ed8d79 (Paul Burton           2014-09-11 08:30:16 +0100  37) 	bool
774c105ed8d79 (Paul Burton           2014-09-11 08:30:16 +0100  38) 
fe0f67660ee9c (Dave Martin           2020-03-16 16:50:46 +0000  39) config ARCH_HAVE_ELF_PROT
fe0f67660ee9c (Dave Martin           2020-03-16 16:50:46 +0000  40) 	bool
fe0f67660ee9c (Dave Martin           2020-03-16 16:50:46 +0000  41) 
db751e309ff05 (Dave Martin           2020-03-16 16:50:43 +0000  42) config ARCH_USE_GNU_PROPERTY
db751e309ff05 (Dave Martin           2020-03-16 16:50:43 +0000  43) 	bool
db751e309ff05 (Dave Martin           2020-03-16 16:50:43 +0000  44) 
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700  45) config BINFMT_ELF_FDPIC
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700  46) 	bool "Kernel support for FDPIC ELF binaries"
382e67aec6a7e (Nicolas Pitre         2017-08-11 00:53:39 -0400  47) 	default y if !BINFMT_ELF
a579fcfa8e49c (Arnd Bergmann         2021-01-18 12:45:46 +0100  48) 	depends on (ARM || (SUPERH && !MMU))
f43edca7ed08f (Ralf Baechle          2016-05-23 16:22:26 -0700  49) 	select ELFCORE
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700  50) 	help
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700  51) 	  ELF FDPIC binaries are based on ELF, but allow the individual load
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700  52) 	  segments of a binary to be located in memory independently of each
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700  53) 	  other. This makes this format ideal for use in environments where no
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700  54) 	  MMU is available as it still permits text segments to be shared,
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700  55) 	  even if data segments are not.
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700  56) 
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700  57) 	  It is also possible to run FDPIC ELF binaries on MMU linux also.
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700  58) 
f43edca7ed08f (Ralf Baechle          2016-05-23 16:22:26 -0700  59) config ELFCORE
f43edca7ed08f (Ralf Baechle          2016-05-23 16:22:26 -0700  60) 	bool
f43edca7ed08f (Ralf Baechle          2016-05-23 16:22:26 -0700  61) 	help
f43edca7ed08f (Ralf Baechle          2016-05-23 16:22:26 -0700  62) 	  This option enables kernel/elfcore.o.
f43edca7ed08f (Ralf Baechle          2016-05-23 16:22:26 -0700  63) 
656eb2cd5da15 (Roland McGrath        2008-10-18 20:28:23 -0700  64) config CORE_DUMP_DEFAULT_ELF_HEADERS
656eb2cd5da15 (Roland McGrath        2008-10-18 20:28:23 -0700  65) 	bool "Write ELF core dumps with partial segments"
895021552d6ff (Roland McGrath        2010-10-27 15:34:09 -0700  66) 	default y
2d96d1053d97c (David Brownell        2009-01-09 16:40:52 -0800  67) 	depends on BINFMT_ELF && ELF_CORE
656eb2cd5da15 (Roland McGrath        2008-10-18 20:28:23 -0700  68) 	help
656eb2cd5da15 (Roland McGrath        2008-10-18 20:28:23 -0700  69) 	  ELF core dump files describe each memory mapping of the crashed
656eb2cd5da15 (Roland McGrath        2008-10-18 20:28:23 -0700  70) 	  process, and can contain or omit the memory contents of each one.
656eb2cd5da15 (Roland McGrath        2008-10-18 20:28:23 -0700  71) 	  The contents of an unmodified text mapping are omitted by default.
656eb2cd5da15 (Roland McGrath        2008-10-18 20:28:23 -0700  72) 
656eb2cd5da15 (Roland McGrath        2008-10-18 20:28:23 -0700  73) 	  For an unmodified text mapping of an ELF object, including just
656eb2cd5da15 (Roland McGrath        2008-10-18 20:28:23 -0700  74) 	  the first page of the file in a core dump makes it possible to
656eb2cd5da15 (Roland McGrath        2008-10-18 20:28:23 -0700  75) 	  identify the build ID bits in the file, without paying the i/o
656eb2cd5da15 (Roland McGrath        2008-10-18 20:28:23 -0700  76) 	  cost and disk space to dump all the text.  However, versions of
656eb2cd5da15 (Roland McGrath        2008-10-18 20:28:23 -0700  77) 	  GDB before 6.7 are confused by ELF core dump files in this format.
656eb2cd5da15 (Roland McGrath        2008-10-18 20:28:23 -0700  78) 
656eb2cd5da15 (Roland McGrath        2008-10-18 20:28:23 -0700  79) 	  The core dump behavior can be controlled per process using
656eb2cd5da15 (Roland McGrath        2008-10-18 20:28:23 -0700  80) 	  the /proc/PID/coredump_filter pseudo-file; this setting is
0c1bc6b84525b (Mauro Carvalho Chehab 2020-04-14 18:48:37 +0200  81) 	  inherited.  See Documentation/filesystems/proc.rst for details.
656eb2cd5da15 (Roland McGrath        2008-10-18 20:28:23 -0700  82) 
656eb2cd5da15 (Roland McGrath        2008-10-18 20:28:23 -0700  83) 	  This config option changes the default setting of coredump_filter
895021552d6ff (Roland McGrath        2010-10-27 15:34:09 -0700  84) 	  seen at boot time.  If unsure, say Y.
656eb2cd5da15 (Roland McGrath        2008-10-18 20:28:23 -0700  85) 
2535e0d723e4d (Josh Triplett         2013-04-30 15:27:44 -0700  86) config BINFMT_SCRIPT
2535e0d723e4d (Josh Triplett         2013-04-30 15:27:44 -0700  87) 	tristate "Kernel support for scripts starting with #!"
2535e0d723e4d (Josh Triplett         2013-04-30 15:27:44 -0700  88) 	default y
2535e0d723e4d (Josh Triplett         2013-04-30 15:27:44 -0700  89) 	help
2535e0d723e4d (Josh Triplett         2013-04-30 15:27:44 -0700  90) 	  Say Y here if you want to execute interpreted scripts starting with
2535e0d723e4d (Josh Triplett         2013-04-30 15:27:44 -0700  91) 	  #! followed by the path to an interpreter.
2535e0d723e4d (Josh Triplett         2013-04-30 15:27:44 -0700  92) 
2535e0d723e4d (Josh Triplett         2013-04-30 15:27:44 -0700  93) 	  You can build this support as a module; however, until that module
2535e0d723e4d (Josh Triplett         2013-04-30 15:27:44 -0700  94) 	  gets loaded, you cannot run scripts.  Thus, if you want to load this
2535e0d723e4d (Josh Triplett         2013-04-30 15:27:44 -0700  95) 	  module from an initramfs, the portion of the initramfs before loading
2535e0d723e4d (Josh Triplett         2013-04-30 15:27:44 -0700  96) 	  this module must consist of compiled binaries only.
2535e0d723e4d (Josh Triplett         2013-04-30 15:27:44 -0700  97) 
2535e0d723e4d (Josh Triplett         2013-04-30 15:27:44 -0700  98) 	  Most systems will not boot if you say M or N here.  If unsure, say Y.
2535e0d723e4d (Josh Triplett         2013-04-30 15:27:44 -0700  99) 
aef0f78e7460c (Christoph Hellwig     2019-06-13 09:08:57 +0200 100) config ARCH_HAS_BINFMT_FLAT
aef0f78e7460c (Christoph Hellwig     2019-06-13 09:08:57 +0200 101) 	bool
aef0f78e7460c (Christoph Hellwig     2019-06-13 09:08:57 +0200 102) 
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 103) config BINFMT_FLAT
3202e1811fd31 (Adrian Bunk           2008-04-29 00:59:02 -0700 104) 	bool "Kernel support for flat binaries"
aef0f78e7460c (Christoph Hellwig     2019-06-13 09:08:57 +0200 105) 	depends on ARCH_HAS_BINFMT_FLAT
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 106) 	help
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 107) 	  Support uClinux FLAT format binaries.
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 108) 
bdd15a288492f (Christoph Hellwig     2019-06-13 09:08:51 +0200 109) config BINFMT_FLAT_ARGVP_ENVP_ON_STACK
bdd15a288492f (Christoph Hellwig     2019-06-13 09:08:51 +0200 110) 	bool
bdd15a288492f (Christoph Hellwig     2019-06-13 09:08:51 +0200 111) 
1d52dca117434 (Christoph Hellwig     2019-06-13 09:08:50 +0200 112) config BINFMT_FLAT_OLD_ALWAYS_RAM
1d52dca117434 (Christoph Hellwig     2019-06-13 09:08:50 +0200 113) 	bool
1d52dca117434 (Christoph Hellwig     2019-06-13 09:08:50 +0200 114) 
04d82a6d0881e (Damien Le Moal        2021-04-17 10:10:08 +0900 115) config BINFMT_FLAT_NO_DATA_START_OFFSET
04d82a6d0881e (Damien Le Moal        2021-04-17 10:10:08 +0900 116) 	bool
04d82a6d0881e (Damien Le Moal        2021-04-17 10:10:08 +0900 117) 
cf9a566c2c06a (Christoph Hellwig     2019-06-13 09:08:58 +0200 118) config BINFMT_FLAT_OLD
cf9a566c2c06a (Christoph Hellwig     2019-06-13 09:08:58 +0200 119) 	bool "Enable support for very old legacy flat binaries"
cf9a566c2c06a (Christoph Hellwig     2019-06-13 09:08:58 +0200 120) 	depends on BINFMT_FLAT
cf9a566c2c06a (Christoph Hellwig     2019-06-13 09:08:58 +0200 121) 	help
cf9a566c2c06a (Christoph Hellwig     2019-06-13 09:08:58 +0200 122) 	  Support decade old uClinux FLAT format binaries.  Unless you know
cf9a566c2c06a (Christoph Hellwig     2019-06-13 09:08:58 +0200 123) 	  you have some of those say N here.
cf9a566c2c06a (Christoph Hellwig     2019-06-13 09:08:58 +0200 124) 
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 125) config BINFMT_ZFLAT
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 126) 	bool "Enable ZFLAT support"
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 127) 	depends on BINFMT_FLAT
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 128) 	select ZLIB_INFLATE
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 129) 	help
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 130) 	  Support FLAT format compressed binaries
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 131) 
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 132) config BINFMT_SHARED_FLAT
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 133) 	bool "Enable shared FLAT support"
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 134) 	depends on BINFMT_FLAT
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 135) 	help
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 136) 	  Support FLAT shared libraries
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 137) 
e17c6d56160e4 (David Woodhouse       2008-06-17 12:19:34 +0100 138) config HAVE_AOUT
e17c6d56160e4 (David Woodhouse       2008-06-17 12:19:34 +0100 139)        def_bool n
e17c6d56160e4 (David Woodhouse       2008-06-17 12:19:34 +0100 140) 
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 141) config BINFMT_AOUT
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 142) 	tristate "Kernel support for a.out and ECOFF binaries"
e17c6d56160e4 (David Woodhouse       2008-06-17 12:19:34 +0100 143) 	depends on HAVE_AOUT
a7f7f6248d974 (Masahiro Yamada       2020-06-14 01:50:22 +0900 144) 	help
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 145) 	  A.out (Assembler.OUTput) is a set of formats for libraries and
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 146) 	  executables used in the earliest versions of UNIX.  Linux used
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 147) 	  the a.out formats QMAGIC and ZMAGIC until they were replaced
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 148) 	  with the ELF format.
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 149) 
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 150) 	  The conversion to ELF started in 1995.  This option is primarily
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 151) 	  provided for historical interest and for the benefit of those
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 152) 	  who need to run binaries from that era.
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 153) 
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 154) 	  Most people should answer N here.  If you think you may have
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 155) 	  occasional use for this format, enable module support above
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 156) 	  and answer M here to compile this support as a module called
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 157) 	  binfmt_aout.
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 158) 
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 159) 	  If any crucial components of your system (such as /sbin/init
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 160) 	  or /lib/ld.so) are still in a.out format, you will have to
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 161) 	  say Y here.
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 162) 
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 163) config OSF4_COMPAT
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 164) 	bool "OSF/1 v4 readv/writev compatibility"
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 165) 	depends on ALPHA && BINFMT_AOUT
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 166) 	help
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 167) 	  Say Y if you are using OSF/1 binaries (like Netscape and Acrobat)
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 168) 	  with v4 shared libraries freely available from Compaq. If you're
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 169) 	  going to use shared libraries from Tru64 version 5.0 or later, say N.
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 170) 
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 171) config BINFMT_EM86
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 172) 	tristate "Kernel support for Linux/Intel ELF binaries"
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 173) 	depends on ALPHA
a7f7f6248d974 (Masahiro Yamada       2020-06-14 01:50:22 +0900 174) 	help
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 175) 	  Say Y here if you want to be able to execute Linux/Intel ELF
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 176) 	  binaries just like native Alpha binaries on your Alpha machine. For
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 177) 	  this to work, you need to have the emulator /usr/bin/em86 in place.
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 178) 
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 179) 	  You can get the same functionality by saying N here and saying Y to
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 180) 	  "Kernel support for MISC binaries".
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 181) 
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 182) 	  You may answer M to compile the emulation support as a module and
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 183) 	  later load the module when you want to use a Linux/Intel binary. The
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 184) 	  module will be called binfmt_em86. If unsure, say Y.
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 185) 
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 186) config BINFMT_MISC
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 187) 	tristate "Kernel support for MISC binaries"
a7f7f6248d974 (Masahiro Yamada       2020-06-14 01:50:22 +0900 188) 	help
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 189) 	  If you say Y here, it will be possible to plug wrapper-driven binary
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 190) 	  formats into the kernel. You will like this especially when you use
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 191) 	  programs that need an interpreter to run like Java, Python, .NET or
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 192) 	  Emacs-Lisp. It's also useful if you often run DOS executables under
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 193) 	  the Linux DOS emulator DOSEMU (read the DOSEMU-HOWTO, available from
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 194) 	  <http://www.tldp.org/docs.html#howto>). Once you have
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 195) 	  registered such a binary class with the kernel, you can start one of
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 196) 	  those programs simply by typing in its name at a shell prompt; Linux
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 197) 	  will automatically feed it to the correct interpreter.
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 198) 
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 199) 	  You can do other nice things, too. Read the file
34962fb8070cb (Mauro Carvalho Chehab 2018-05-08 15:14:57 -0300 200) 	  <file:Documentation/admin-guide/binfmt-misc.rst> to learn how to use this
8c27ceff3604b (Mauro Carvalho Chehab 2016-10-18 10:12:27 -0200 201) 	  feature, <file:Documentation/admin-guide/java.rst> for information about how
8c27ceff3604b (Mauro Carvalho Chehab 2016-10-18 10:12:27 -0200 202) 	  to include Java support. and <file:Documentation/admin-guide/mono.rst> for
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 203)           information about how to include Mono-based .NET support.
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 204) 
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 205)           To use binfmt_misc, you will need to mount it:
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 206) 		mount binfmt_misc -t binfmt_misc /proc/sys/fs/binfmt_misc
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 207) 
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 208) 	  You may say M here for module support and later load the module when
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 209) 	  you have use for it; the module is called binfmt_misc. If you
^1da177e4c3f4 (Linus Torvalds        2005-04-16 15:20:36 -0700 210) 	  don't know what to answer at this point, say Y.
046d662f48183 (Alex Kelly            2012-10-04 17:15:23 -0700 211) 
046d662f48183 (Alex Kelly            2012-10-04 17:15:23 -0700 212) config COREDUMP
046d662f48183 (Alex Kelly            2012-10-04 17:15:23 -0700 213) 	bool "Enable core dump support" if EXPERT
046d662f48183 (Alex Kelly            2012-10-04 17:15:23 -0700 214) 	default y
046d662f48183 (Alex Kelly            2012-10-04 17:15:23 -0700 215) 	help
046d662f48183 (Alex Kelly            2012-10-04 17:15:23 -0700 216) 	  This option enables support for performing core dumps. You almost
046d662f48183 (Alex Kelly            2012-10-04 17:15:23 -0700 217) 	  certainly want to say Y here. Not necessary on systems that never
046d662f48183 (Alex Kelly            2012-10-04 17:15:23 -0700 218) 	  need debugging or only ever run flawless code.
006477f40d2e7 (Christoph Hellwig     2018-07-31 13:39:34 +0200 219) 
006477f40d2e7 (Christoph Hellwig     2018-07-31 13:39:34 +0200 220) endmenu