Commit ba45cff6 authored by Michael Neuling's avatar Michael Neuling Committed by Michael Ellerman
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powerpc: Document xive=off option 



commit 243e2511 ("powerpc/xive: Native exploitation of the XIVE
interrupt controller") added an option to turn off Linux native XIVE
usage via the xive=off kernel command line option.

This documents this option.

Signed-off-by: default avatarMichael Neuling <mikey@neuling.org>
Reviewed-by: default avatarCédric Le Goater <clg@kaod.org>
Acked-by: default avatarStewart Smith <stewart@linux.ibm.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent 8b8dc695

Documentation/admin-guide/kernel-parameters.txt

+9 −0
Original line number Diff line number Diff line
@@ -5272,6 +5272,15 @@ 
			Format:

			<irq>,<irq_mask>,<io>,<full_duplex>,<do_sound>,<lockup_hack>[,<irq2>[,<irq3>[,<irq4>]]]



	xive=		[PPC]

			By default on POWER9 and above, the kernel will

			natively use the XIVE interrupt controller. This option

			allows the fallback firmware mode to be used:



			off       Fallback to firmware control of XIVE interrupt

				  controller on both pseries and powernv

				  platforms. Only useful on POWER9 and above.



	xhci-hcd.quirks		[USB,KNL]

			A hex value specifying bitmask with supplemental xhci

			host controller quirks. Meaning of each bit can be