From: Michael Neuling <mikey@neuling.org>
To: mpe@ellerman.id.au
Cc: mikey@neuling.org, linuxppc-dev@lists.ozlabs.org,
"Cédric Le Goater" <clg@kaod.org>
Subject: [PATCH] powerpc: Document xive=off option
Date: Mon, 13 May 2019 15:39:10 +1000 [thread overview]
Message-ID: <20190513053910.19227-1-mikey@neuling.org> (raw)
commit 243e25112d06 ("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: Michael Neuling <mikey@neuling.org>
---
Documentation/admin-guide/kernel-parameters.txt | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index c45a19d654..ee410d0ef4 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -5177,6 +5177,15 @@
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
--
2.21.0
next reply other threads:[~2019-05-13 5:41 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-13 5:39 Michael Neuling [this message]
2019-05-13 6:36 ` [PATCH] powerpc: Document xive=off option Cédric Le Goater
2019-06-25 3:38 ` Stewart Smith
2019-07-03 14:27 ` Michael Ellerman
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