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CONFIG_ARM_PATCH_PHYS_VIRT: Patch physical to virtual translations at runtime (EXPERIMENTAL)
General informations
The Linux kernel configuration item CONFIG_ARM_PATCH_PHYS_VIRT has multiple definitions:
Patch physical to virtual translations at runtime (EXPERIMENTAL) found in arch/arm/Kconfig
The configuration item CONFIG_ARM_PATCH_PHYS_VIRT:
- prompt: Patch physical to virtual translations at runtime (EXPERIMENTAL)
- type: bool
- depends on:
( CONFIG_EXPERIMENTAL ) && (! CONFIG_XIP_KERNEL && CONFIG_MMU ) && (! CONFIG_ARCH_REALVIEW || ! CONFIG_SPARSEMEM ) - defined in arch/arm/Kconfig
- found in Linux kernels: 2.6.39, 3.0
Help text
Patch phys-to-virt and virt-to-phys translation functions at boot and module load time according to the position of the kernel in system memory.
This can only be used with non-XIP MMU kernels where the base of physical memory is at a 16MB boundary, or theoretically 64K for the MSM machine class.
Patch physical to virtual translations at runtime found in arch/arm/Kconfig
The configuration item CONFIG_ARM_PATCH_PHYS_VIRT:
- prompt: Patch physical to virtual translations at runtime
- type: bool
- depends on:
( CONFIG_EMBEDDED ) && (! CONFIG_XIP_KERNEL && CONFIG_MMU ) && (! CONFIG_ARCH_REALVIEW || ! CONFIG_SPARSEMEM ) - defined in arch/arm/Kconfig
- found in Linux kernels: 3.1–3.9, 3.10-rc+HEAD
Help text
Patch phys-to-virt and virt-to-phys translation functions at boot and module load time according to the position of the kernel in system memory.
This can only be used with non-XIP MMU kernels where the base of physical memory is at a 16MB boundary.
Only disable this option if you know that you do not require this feature (eg, building a kernel for a single machine) and you need to shrink the kernel to the minimal size.
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