CONFIG_X86_MAX_ADDITIONAL_MEM_DOMAINS¶
Maximum number of memory domains
Type: int
Help¶
The initial page tables at boot are pre-allocated, and used for the
default memory domain. Instantiation of additional memory domains
if common page tables are in use requires a pool of free pinned
memory pages for constructing page tables.
Zephyr test cases assume 3 additional domains can be instantiated.
Direct dependencies¶
X86_MMU && USERSPACE && !X86_COMMON_PAGE_TABLE && X86
(Includes any dependencies from ifs and menus.)
Default¶
3
Kconfig definition¶
At arch/x86/Kconfig:358
Included via Kconfig:8 → Kconfig.zephyr:39 → arch/Kconfig:12
Menu path: (Top) → X86 Architecture Options
config X86_MAX_ADDITIONAL_MEM_DOMAINS
int "Maximum number of memory domains"
default 3
depends on X86_MMU && USERSPACE && !X86_COMMON_PAGE_TABLE && X86
help
The initial page tables at boot are pre-allocated, and used for the
default memory domain. Instantiation of additional memory domains
if common page tables are in use requires a pool of free pinned
memory pages for constructing page tables.
Zephyr test cases assume 3 additional domains can be instantiated.
(The ‘depends on’ condition includes propagated dependencies from ifs and menus.)