diff options
| author | Jeff Dike <jdike@addtoit.com> | 2005-09-03 15:57:33 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@evo.osdl.org> | 2005-09-05 00:06:22 -0700 |
| commit | 02edeb586ae4cdd17778923674700edb732a4741 (patch) | |
| tree | fe55ef9ca0d35901b835984026d76387aa2311b8 /arch | |
| parent | 13abf8130139c2ccd4962a7e5a8902be5e6cb5a7 (diff) | |
| download | linux-3.10-02edeb586ae4cdd17778923674700edb732a4741.tar.gz linux-3.10-02edeb586ae4cdd17778923674700edb732a4741.tar.bz2 linux-3.10-02edeb586ae4cdd17778923674700edb732a4741.zip | |
[PATCH] uml: mark SMP on UML/x86_64 as broken
Noticed by Al Viro <viro@parcelfarce.linux.theplanet.co.uk> - SMP on x86_64 is
fundamentally broken due to UML's reuse of the host arch's percpu stuff. This
is OK on x86, but the x86_64 pda stuff just won't work for UML.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/um/Kconfig | 2 | ||||
| -rw-r--r-- | arch/um/Kconfig.x86_64 | 4 |
2 files changed, 5 insertions, 1 deletions
diff --git a/arch/um/Kconfig b/arch/um/Kconfig index d5e22f08488..684e1f8b275 100644 --- a/arch/um/Kconfig +++ b/arch/um/Kconfig @@ -196,7 +196,7 @@ config HOST_2G_2G config SMP bool "Symmetric multi-processing support (EXPERIMENTAL)" default n - depends on MODE_TT && EXPERIMENTAL + depends on (MODE_TT && EXPERIMENTAL && !SMP_BROKEN) || (BROKEN && SMP_BROKEN) help This option enables UML SMP support. It is NOT related to having a real SMP box. Not directly, at least. diff --git a/arch/um/Kconfig.x86_64 b/arch/um/Kconfig.x86_64 index 6e5357c5bcf..bd35e59419c 100644 --- a/arch/um/Kconfig.x86_64 +++ b/arch/um/Kconfig.x86_64 @@ -37,3 +37,7 @@ config ARCH_HAS_SC_SIGNALS config ARCH_REUSE_HOST_VSYSCALL_AREA bool default n + +config SMP_BROKEN + bool + default y |