CONFIG_KERNEL_STACK_ORDER: Kernel stack size order

General informations

The Linux kernel configuration item CONFIG_KERNEL_STACK_ORDER has multiple definitions:

Kernel stack size order found in arch/um/Kconfig

The configuration item CONFIG_KERNEL_STACK_ORDER:

• prompt: Kernel stack size order
• type: int
• depends on: ( CONFIG_64BIT ) && (! CONFIG_64BIT )
• defined in arch/um/Kconfig
• found in Linux kernels: 2.5.60–2.5.75, 2.6.0–2.6.27, 4.19–4.20, 5.0–5.19, 6.0–6.12, 6.13-rc+HEAD

Help text

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.

Kernel stack size order found in arch/um/Kconfig.um

The configuration item CONFIG_KERNEL_STACK_ORDER:

• prompt: Kernel stack size order
• type: int
• depends on: ( CONFIG_64BIT ) && (! CONFIG_64BIT )
• defined in arch/um/Kconfig.um
• found in Linux kernels: 2.6.28–2.6.39, 3.0–3.19, 4.0–4.18

Help text

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.

Hardware

LKDDb

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Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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