CONFIG_ARM_KERNMEM_PERMS: Restrict kernel memory permissions

General informations

The Linux kernel configuration item CONFIG_ARM_KERNMEM_PERMS:

• prompt: Restrict kernel memory permissions
• type: bool
• depends on: CONFIG_MMU
• defined in arch/arm/mm/Kconfig
• found in Linux kernels: 3.19, 4.0–4.5

Help text

If this is set, kernel memory other than kernel text (and rodata) will be made non-executable. The tradeoff is that each region is padded to section-size (1MiB) boundaries (because their permissions are different and splitting the 1M pages into 4K ones causes TLB performance problems), wasting memory.

Hardware

LKDDb

Raw data from LKDDb:

• (none)

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)

Automatic links from Google (and ads)

Custom Search

Popular queries: