CONFIG_X86_MFENCE_INSTRUCTION_SUPPORTED¶
X86 MFENCE instruction supported
Type: bool
Help¶
Set n to disable the use of MFENCE instruction in arch_dcache_flush()
for X86 CPUs have CLFLUSH instruction but no MFENCE
Direct dependencies¶
CACHE_MANAGEMENT && !X86_64 && X86
(Includes any dependencies from ifs and menus.)
Default¶
y
Kconfig definition¶
At arch/x86/core/Kconfig.ia32:173
Included via Kconfig:8 → Kconfig.zephyr:39 → arch/Kconfig:12 → arch/x86/Kconfig:482
Menu path: (Top) → X86 Architecture Options
config X86_MFENCE_INSTRUCTION_SUPPORTED
bool "X86 MFENCE instruction supported"
default y
depends on CACHE_MANAGEMENT && !X86_64 && X86
help
Set n to disable the use of MFENCE instruction in arch_dcache_flush()
for X86 CPUs have CLFLUSH instruction but no MFENCE
(The ‘depends on’ condition includes propagated dependencies from ifs and menus.)