Commit 21d8fb8d authored by Mateusz Jończyk's avatar Mateusz Jończyk Committed by Ingo Molnar
Browse files

x86/Kconfig: Document CONFIG_PCI_MMCONFIG 



This configuration option had no help text, so add it.

CONFIG_EXPERT is enabled on some distribution kernels, so people using a
distribution kernel's configuration as a starting point will see this
option.

[ mingo: Standardized the new Kconfig text a bit. ]

Signed-off-by: default avatarMateusz Jończyk <mat.jonczyk@o2.pl>
Signed-off-by: default avatarDavid Heideberg <david@ixit.cz>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/r/20250321-x86_x2apic-v3-5-b0cbaa6fa338@ixit.cz
parent 4047e877

arch/x86/Kconfig

+13 −0
Original line number Diff line number Diff line
@@ -2902,6 +2902,19 @@ config PCI_MMCONFIG 
	default y

	depends on PCI && (ACPI || JAILHOUSE_GUEST)

	depends on X86_64 || (PCI_GOANY || PCI_GOMMCONFIG)

	help

	  Add support for accessing the PCI configuration space as a memory

	  mapped area. It is the recommended method if the system supports

	  this (it must have PCI Express and ACPI for it to be available).



	  In the unlikely case that enabling this configuration option causes

	  problems, the mechanism can be switched off with the 'pci=nommconf'

	  command line parameter.



	  Say N only if you are sure that your platform does not support this

	  access method or you have problems caused by it.



	  Say Y otherwise.



config PCI_OLPC

	def_bool y