diff options
Diffstat (limited to 'arch/um/Kconfig')
| -rw-r--r-- | arch/um/Kconfig | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/arch/um/Kconfig b/arch/um/Kconfig index ec9711d068b7..41913504a56e 100644 --- a/arch/um/Kconfig +++ b/arch/um/Kconfig @@ -142,13 +142,17 @@ config MAGIC_SYSRQ config KERNEL_STACK_ORDER int "Kernel stack size order" - default 1 if 64BIT - range 1 10 if 64BIT - default 0 if !64BIT + default 2 if 64BIT + range 2 10 if 64BIT + default 1 if !64BIT help 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. + It is possible to reduce the stack to 1 for 64BIT and 0 for 32BIT on + older (pre-2017) CPUs. It is not recommended on newer CPUs due to the + increase in the size of the state which needs to be saved when handling + signals. config MMAPPER tristate "iomem emulation driver" |