arch/powerpc/platforms/Kconfig

Source file repositories/reference/linux-study-clean/arch/powerpc/platforms/Kconfig

File Facts

System: Linux kernel
Corpus path: arch/powerpc/platforms/Kconfig
Extension: [no extension]
Size: 8213 bytes
Lines: 294
Domain: Architecture Layer
Bucket: arch/powerpc
Inferred role: Architecture Layer: build/configuration rule
Status: atlas-only

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

No C-style include directives detected by the generator.

Detected Declarations

No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

# SPDX-License-Identifier: GPL-2.0
menu "Platform support"

source "arch/powerpc/platforms/powernv/Kconfig"
source "arch/powerpc/platforms/pseries/Kconfig"
source "arch/powerpc/platforms/chrp/Kconfig"
source "arch/powerpc/platforms/512x/Kconfig"
source "arch/powerpc/platforms/52xx/Kconfig"
source "arch/powerpc/platforms/powermac/Kconfig"
source "arch/powerpc/platforms/pasemi/Kconfig"
source "arch/powerpc/platforms/ps3/Kconfig"
source "arch/powerpc/platforms/cell/Kconfig"
source "arch/powerpc/platforms/8xx/Kconfig"
source "arch/powerpc/platforms/82xx/Kconfig"
source "arch/powerpc/platforms/83xx/Kconfig"
source "arch/powerpc/platforms/85xx/Kconfig"
source "arch/powerpc/platforms/86xx/Kconfig"
source "arch/powerpc/platforms/embedded6xx/Kconfig"
source "arch/powerpc/platforms/44x/Kconfig"
source "arch/powerpc/platforms/amigaone/Kconfig"
source "arch/powerpc/platforms/book3s/Kconfig"
source "arch/powerpc/platforms/microwatt/Kconfig"

config KVM_GUEST
	bool "KVM Guest support"
	select EPAPR_PARAVIRT
	help
	  This option enables various optimizations for running under the KVM
	  hypervisor. Overhead for the kernel when not running inside KVM should
	  be minimal.

	  In case of doubt, say Y

config EPAPR_PARAVIRT
	bool "ePAPR para-virtualization support"
	help
	  Enables ePAPR para-virtualization support for guests.

	  In case of doubt, say Y

config PPC_HASH_MMU_NATIVE
	bool
	depends on PPC_BOOK3S
	help
	  Support for running natively on the hardware, i.e. without
	  a hypervisor. This option is not user-selectable but should
	  be selected by all platforms that need it.

config PPC_OF_BOOT_TRAMPOLINE
	bool "Support booting from Open Firmware or yaboot"
	depends on PPC_BOOK3S_32 || PPC64
	select RELOCATABLE if PPC64
	default y
	help
	  Support from booting from Open Firmware or yaboot using an
	  Open Firmware client interface. This enables the kernel to
	  communicate with open firmware to retrieve system information
	  such as the device tree.

	  In case of doubt, say Y

config PPC_DT_CPU_FTRS
	bool "Device-tree based CPU feature discovery & setup"
	depends on PPC_BOOK3S_64
	default y
	help
	  This enables code to use a new device tree binding for describing CPU
	  compatibility and features. Saying Y here will attempt to use the new
	  binding if the firmware provides it. Currently only the skiboot
	  firmware provides this binding.

Annotation

Atlas domain: Architecture Layer / arch/powerpc.
Implementation status: atlas-only.

Implementation Notes

This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.