2005-04-16 16:20:36 -06:00
|
|
|
config STATIC_LINK
|
|
|
|
bool "Force a static link"
|
|
|
|
default n
|
|
|
|
help
|
2007-10-16 02:26:54 -06:00
|
|
|
This option gives you the ability to force a static link of UML.
|
|
|
|
Normally, UML is linked as a shared binary. This is inconvenient for
|
|
|
|
use in a chroot jail. So, if you intend to run UML inside a chroot,
|
|
|
|
you probably want to say Y here.
|
|
|
|
Additionally, this option enables using higher memory spaces (up to
|
|
|
|
2.75G) for UML.
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2005-06-23 01:07:43 -06:00
|
|
|
source "mm/Kconfig"
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
config LD_SCRIPT_STATIC
|
|
|
|
bool
|
|
|
|
default y
|
uml: throw out CONFIG_MODE_TT
This patchset throws out tt mode, which has been non-functional for a while.
This is done in phases, interspersed with code cleanups on the affected files.
The removal is done as follows:
remove all code, config options, and files which depend on
CONFIG_MODE_TT
get rid of the CHOOSE_MODE macro, which decided whether to
call tt-mode or skas-mode code, and replace invocations with their
skas portions
replace all now-trivial procedures with their skas equivalents
There are now a bunch of now-redundant pieces of data structures, including
mode-specific pieces of the thread structure, pt_regs, and mm_context. These
are all replaced with their skas-specific contents.
As part of the ongoing style compliance project, I made a style pass over all
files that were changed. There are three such patches, one for each phase,
covering the files affected by that phase but no later ones.
I noticed that we weren't freeing the LDT state associated with a process when
it exited, so that's fixed in one of the later patches.
The last patch is a tidying patch which I've had for a while, but which caused
inexplicable crashes under tt mode. Since that is no longer a problem, this
can now go in.
This patch:
Start getting rid of tt mode support.
This patch throws out CONFIG_MODE_TT and all config options, code, and files
which depend on it.
CONFIG_MODE_SKAS is gone and everything that depends on it is included
unconditionally.
The few changed lines are in re-written Kconfig help, lines which needed
something skas-related removed from them, and a few more which weren't
strictly deletions.
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-16 02:26:50 -06:00
|
|
|
depends on STATIC_LINK
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
config LD_SCRIPT_DYN
|
|
|
|
bool
|
|
|
|
default y
|
|
|
|
depends on !LD_SCRIPT_STATIC
|
|
|
|
|
|
|
|
source "fs/Kconfig.binfmt"
|
|
|
|
|
|
|
|
config HOSTFS
|
|
|
|
tristate "Host filesystem"
|
|
|
|
help
|
2007-10-16 02:26:54 -06:00
|
|
|
While the User-Mode Linux port uses its own root file system for
|
|
|
|
booting and normal file access, this module lets the UML user
|
|
|
|
access files stored on the host. It does not require any
|
|
|
|
network connection between the Host and UML. An example use of
|
|
|
|
this might be:
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2007-10-16 02:26:54 -06:00
|
|
|
mount none /tmp/fromhost -t hostfs -o /tmp/umlshare
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2007-10-16 02:26:54 -06:00
|
|
|
where /tmp/fromhost is an empty directory inside UML and
|
|
|
|
/tmp/umlshare is a directory on the host with files the UML user
|
|
|
|
wishes to access.
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2007-10-16 02:26:54 -06:00
|
|
|
For more information, see
|
|
|
|
<http://user-mode-linux.sourceforge.net/hostfs.html>.
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2007-10-16 02:26:54 -06:00
|
|
|
If you'd like to be able to work with files stored on the host,
|
|
|
|
say Y or M here; otherwise say N.
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
config HPPFS
|
|
|
|
tristate "HoneyPot ProcFS (EXPERIMENTAL)"
|
2011-04-27 16:26:53 -06:00
|
|
|
depends on EXPERIMENTAL && PROC_FS
|
2005-04-16 16:20:36 -06:00
|
|
|
help
|
2007-10-16 02:26:54 -06:00
|
|
|
hppfs (HoneyPot ProcFS) is a filesystem which allows UML /proc
|
|
|
|
entries to be overridden, removed, or fabricated from the host.
|
|
|
|
Its purpose is to allow a UML to appear to be a physical machine
|
|
|
|
by removing or changing anything in /proc which gives away the
|
|
|
|
identity of a UML.
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2008-02-04 23:30:38 -07:00
|
|
|
See <http://user-mode-linux.sf.net/old/hppfs.html> for more information.
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2007-10-16 02:26:54 -06:00
|
|
|
You only need this if you are setting up a UML honeypot. Otherwise,
|
|
|
|
it is safe to say 'N' here.
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
config MCONSOLE
|
|
|
|
bool "Management console"
|
|
|
|
default y
|
|
|
|
help
|
2007-10-16 02:26:54 -06:00
|
|
|
The user mode linux management console is a low-level interface to
|
|
|
|
the kernel, somewhat like the i386 SysRq interface. Since there is
|
|
|
|
a full-blown operating system running under every user mode linux
|
|
|
|
instance, there is much greater flexibility possible than with the
|
|
|
|
SysRq mechanism.
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2007-10-16 02:26:54 -06:00
|
|
|
If you answer 'Y' to this option, to use this feature, you need the
|
|
|
|
mconsole client (called uml_mconsole) which is present in CVS in
|
|
|
|
2.4.5-9um and later (path /tools/mconsole), and is also in the
|
|
|
|
distribution RPM package in 2.4.6 and later.
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2007-10-16 02:26:54 -06:00
|
|
|
It is safe to say 'Y' here.
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
config MAGIC_SYSRQ
|
|
|
|
bool "Magic SysRq key"
|
|
|
|
depends on MCONSOLE
|
2007-10-16 02:26:54 -06:00
|
|
|
help
|
|
|
|
If you say Y here, you will have some control over the system even
|
|
|
|
if the system crashes for example during kernel debugging (e.g., you
|
|
|
|
will be able to flush the buffer cache to disk, reboot the system
|
|
|
|
immediately or dump some status information). A key for each of the
|
|
|
|
possible requests is provided.
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2007-10-16 02:26:54 -06:00
|
|
|
This is the feature normally accomplished by pressing a key
|
|
|
|
while holding SysRq (Alt+PrintScreen).
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2007-10-16 02:26:54 -06:00
|
|
|
On UML, this is accomplished by sending a "sysrq" command with
|
|
|
|
mconsole, followed by the letter for the requested command.
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2007-10-16 02:26:54 -06:00
|
|
|
The keys are documented in <file:Documentation/sysrq.txt>. Don't say Y
|
|
|
|
unless you really know what this hack does.
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
config SMP
|
|
|
|
bool "Symmetric multi-processing support (EXPERIMENTAL)"
|
|
|
|
default n
|
2008-02-04 23:30:41 -07:00
|
|
|
depends on BROKEN
|
2005-04-16 16:20:36 -06:00
|
|
|
help
|
2007-10-16 02:26:54 -06:00
|
|
|
This option enables UML SMP support.
|
|
|
|
It is NOT related to having a real SMP box. Not directly, at least.
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2007-10-16 02:26:54 -06:00
|
|
|
UML implements virtual SMP by allowing as many processes to run
|
|
|
|
simultaneously on the host as there are virtual processors configured.
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2007-10-16 02:26:54 -06:00
|
|
|
Obviously, if the host is a uniprocessor, those processes will
|
|
|
|
timeshare, but, inside UML, will appear to be running simultaneously.
|
|
|
|
If the host is a multiprocessor, then UML processes may run
|
|
|
|
simultaneously, depending on the host scheduler.
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2007-10-16 02:26:54 -06:00
|
|
|
This, however, is supported only in TT mode. So, if you use the SKAS
|
|
|
|
patch on your host, switching to TT mode and enabling SMP usually
|
|
|
|
gives you worse performances.
|
|
|
|
Also, since the support for SMP has been under-developed, there could
|
|
|
|
be some bugs being exposed by enabling SMP.
|
2005-04-16 16:20:36 -06:00
|
|
|
|
2007-10-16 02:26:54 -06:00
|
|
|
If you don't know what to do, say N.
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
config NR_CPUS
|
|
|
|
int "Maximum number of CPUs (2-32)"
|
|
|
|
range 2 32
|
|
|
|
depends on SMP
|
|
|
|
default "32"
|
|
|
|
|
|
|
|
config HIGHMEM
|
2006-01-18 18:42:59 -07:00
|
|
|
bool "Highmem support (EXPERIMENTAL)"
|
2011-01-12 17:59:25 -07:00
|
|
|
depends on !64BIT && BROKEN
|
2006-01-18 18:42:59 -07:00
|
|
|
default n
|
|
|
|
help
|
2007-10-16 02:26:54 -06:00
|
|
|
This was used to allow UML to run with big amounts of memory.
|
|
|
|
Currently it is unstable, so if unsure say N.
|
2006-01-18 18:42:59 -07:00
|
|
|
|
2007-10-16 02:26:54 -06:00
|
|
|
To use big amounts of memory, it is recommended enable static
|
|
|
|
linking (i.e. CONFIG_STATIC_LINK) - this should allow the
|
|
|
|
guest to use up to 2.75G of memory.
|
2005-04-16 16:20:36 -06:00
|
|
|
|
|
|
|
config KERNEL_STACK_ORDER
|
|
|
|
int "Kernel stack size order"
|
2007-05-10 23:22:35 -06:00
|
|
|
default 1 if 64BIT
|
2007-06-08 14:46:49 -06:00
|
|
|
range 1 10 if 64BIT
|
2007-05-10 23:22:35 -06:00
|
|
|
default 0 if !64BIT
|
2005-04-16 16:20:36 -06:00
|
|
|
help
|
2007-10-16 02:26:54 -06:00
|
|
|
This option determines the size of UML kernel stacks. They will
|
|
|
|
be 1 << order pages. The default is OK unless you're running Valgrind
|
|
|
|
on UML, in which case, set this to 3.
|
2010-10-26 15:22:18 -06:00
|
|
|
|
2011-08-18 13:13:00 -06:00
|
|
|
config MMAPPER
|
|
|
|
tristate "iomem emulation driver"
|
|
|
|
help
|
|
|
|
This driver allows a host file to be used as emulated IO memory inside
|
|
|
|
UML.
|
|
|
|
|
2010-10-26 15:22:18 -06:00
|
|
|
config NO_DMA
|
|
|
|
def_bool y
|