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authorLinus Torvalds <torvalds@linux-foundation.org>2015-04-15 22:49:27 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2015-04-15 22:49:27 +0200
commite44740c1a94b5d39b093045920f543a7bc135584 (patch)
tree3dc097e078653cc520476ac997e1765b90703a56 /arch/um/Kconfig.um
parentMerge tag 'upstream-4.1-rc1' of git://git.infradead.org/linux-ubifs (diff)
parentum: Print minimum physical memory requirement (diff)
downloadlinux-e44740c1a94b5d39b093045920f543a7bc135584.tar.xz
linux-e44740c1a94b5d39b093045920f543a7bc135584.zip
Merge tag 'for-linus-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml
Pull UML updates from Richard Weinberger: - hostfs saw a face lifting - old/broken stuff was removed (SMP, HIGHMEM, SKAS3/4) - random cleanups and bug fixes * tag 'for-linus-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml: (26 commits) um: Print minimum physical memory requirement um: Move uml_postsetup in the init_thread stack um: add a kmsg_dumper x86, UML: fix integer overflow in ELF_ET_DYN_BASE um: hostfs: Reduce number of syscalls in readdir um: Remove broken highmem support um: Remove broken SMP support um: Remove SKAS3/4 support um: Remove ppc cruft um: Remove ia64 cruft um: Remove dead code from stacktrace hostfs: No need to box and later unbox the file mode hostfs: Use page_offset() hostfs: Set page flags in hostfs_readpage() correctly hostfs: Remove superfluous initializations in hostfs_open() hostfs: hostfs_open: Reset open flags upon each retry hostfs: Remove superfluous test in hostfs_open() hostfs: Report append flag in ->show_options() hostfs: Use __getname() in follow_link hostfs: Remove open coded strcpy() ...
Diffstat (limited to 'arch/um/Kconfig.um')
-rw-r--r--arch/um/Kconfig.um42
1 files changed, 0 insertions, 42 deletions
diff --git a/arch/um/Kconfig.um b/arch/um/Kconfig.um
index 5dbfe3d9107c..6e67847f5272 100644
--- a/arch/um/Kconfig.um
+++ b/arch/um/Kconfig.um
@@ -95,48 +95,6 @@ config MAGIC_SYSRQ
The keys are documented in <file:Documentation/sysrq.txt>. Don't say Y
unless you really know what this hack does.
-config SMP
- bool "Symmetric multi-processing support"
- default n
- depends on BROKEN
- help
- This option enables UML SMP support.
- It is NOT related to having a real SMP box. Not directly, at least.
-
- UML implements virtual SMP by allowing as many processes to run
- simultaneously on the host as there are virtual processors configured.
-
- 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.
-
- 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.
-
- If you don't know what to do, say N.
-
-config NR_CPUS
- int "Maximum number of CPUs (2-32)"
- range 2 32
- depends on SMP
- default "32"
-
-config HIGHMEM
- bool "Highmem support"
- depends on !64BIT && BROKEN
- default n
- help
- This was used to allow UML to run with big amounts of memory.
- Currently it is unstable, so if unsure say N.
-
- 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.
-
config KERNEL_STACK_ORDER
int "Kernel stack size order"
default 1 if 64BIT