Commit c03f739f authored by Heinrich Schuchardt's avatar Heinrich Schuchardt Committed by Jonathan Corbet
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doc: add novamap to efi kernel command line parameters 



Document the efi=novamap kernel command line parameter.
Put the efi parameters into alphabetic order.

Signed-off-by: default avatarHeinrich Schuchardt <xypron.glpk@gmx.de>
Link: https://lore.kernel.org/r/20200616104012.4780-1-xypron.glpk@gmx.de


Signed-off-by: default avatarJonathan Corbet <corbet@lwn.net>
parent 7ca8e63c

Documentation/admin-guide/kernel-parameters.txt

+10 −8
Original line number Diff line number Diff line
@@ -1207,26 +1207,28 @@ 
			Format: {"off" | "on" | "skip[mbr]"}



	efi=		[EFI]

			Format: { "old_map", "nochunk", "noruntime", "debug",

				  "nosoftreserve", "disable_early_pci_dma",

				  "no_disable_early_pci_dma" }

			old_map [X86-64]: switch to the old ioremap-based EFI

			runtime services mapping. [Needs CONFIG_X86_UV=y]

			Format: { "debug", "disable_early_pci_dma",

				  "nochunk", "noruntime", "nosoftreserve",

				  "novamap", "no_disable_early_pci_dma",

				  "old_map" }

			debug: enable misc debug output.

			disable_early_pci_dma: disable the busmaster bit on all

			PCI bridges while in the EFI boot stub.

			nochunk: disable reading files in "chunks" in the EFI

			boot stub, as chunking can cause problems with some

			firmware implementations.

			noruntime : disable EFI runtime services support

			debug: enable misc debug output

			nosoftreserve: The EFI_MEMORY_SP (Specific Purpose)

			attribute may cause the kernel to reserve the

			memory range for a memory mapping driver to

			claim. Specify efi=nosoftreserve to disable this

			reservation and treat the memory by its base type

			(i.e. EFI_CONVENTIONAL_MEMORY / "System RAM").

			disable_early_pci_dma: Disable the busmaster bit on all

			PCI bridges while in the EFI boot stub

			novamap: do not call SetVirtualAddressMap().

			no_disable_early_pci_dma: Leave the busmaster bit set

			on all PCI bridges while in the EFI boot stub

			old_map [X86-64]: switch to the old ioremap-based EFI

			runtime services mapping. [Needs CONFIG_X86_UV=y]



	efi_no_storage_paranoia [EFI; X86]

			Using this parameter you can use more than 50% of

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