diff options
Diffstat (limited to 'arch/um/Kconfig')
| -rw-r--r-- | arch/um/Kconfig | 41 |
1 files changed, 34 insertions, 7 deletions
diff --git a/arch/um/Kconfig b/arch/um/Kconfig index d75307589d7..5ac1f2963ae 100644 --- a/arch/um/Kconfig +++ b/arch/um/Kconfig @@ -1,3 +1,8 @@ +config DEFCONFIG_LIST + string + option defconfig_list + default "arch/$ARCH/defconfig" + # UML uses the generic IRQ sugsystem config GENERIC_HARDIRQS bool @@ -25,6 +30,19 @@ config PCI config PCMCIA bool +# Yet to do! +config TRACE_IRQFLAGS_SUPPORT + bool + default n + +config LOCKDEP_SUPPORT + bool + default y + +config STACKTRACE_SUPPORT + bool + default y + config GENERIC_CALIBRATE_DELAY bool default y @@ -37,13 +55,16 @@ config IRQ_RELEASE_METHOD menu "UML-specific options" config MODE_TT - bool "Tracing thread support" + bool "Tracing thread support (DEPRECATED)" default n + depends on BROKEN help This option controls whether tracing thread support is compiled - into UML. This option is largely obsolete, given that skas0 provides + into UML. This option is largely obsolete, given that skas0 provides skas security and performance without needing to patch the host. - It is safe to say 'N' here. + It is safe to say 'N' here; saying 'Y' may cause additional problems + with the resulting binary even if you run UML in SKAS mode, and running + in TT mode is strongly *NOT RECOMMENDED*. config STATIC_LINK bool "Force a static link" @@ -56,6 +77,9 @@ config STATIC_LINK for use in a chroot jail. So, if you intend to run UML inside a chroot, and you disable CONFIG_MODE_TT, you probably want to say Y here. + Additionally, this option enables using higher memory spaces (up to + 2.75G) for UML - disabling CONFIG_MODE_TT and enabling this option leads + to best results for this. config KERNEL_HALF_GIGS int "Kernel address space size (in .5G units)" @@ -72,10 +96,13 @@ config MODE_SKAS default y help This option controls whether skas (separate kernel address space) - support is compiled in. If you have applied the skas patch to the - host, then you certainly want to say Y here (and consider saying N - to CONFIG_MODE_TT). Otherwise, it is safe to say Y. Disabling this - option will shrink the UML binary slightly. + support is compiled in. + Unless you have specific needs to use TT mode (which applies almost only + to developers), you should say Y here. + SKAS mode will make use of the SKAS3 patch if it is applied on the host + (and your UML will run in SKAS3 mode), but if no SKAS patch is applied + on the host it will run in SKAS0 mode, which is anyway faster than TT + mode. source "arch/um/Kconfig.arch" source "mm/Kconfig" |