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authorRafael J. Wysocki <rjw@sisk.pl>2012-03-01 03:06:33 +0400
committerJesse Barnes <jbarnes@virtuousgeek.org>2012-03-02 01:36:04 +0400
commit6748dcc269e52925993e0d68447858b41b88b4be (patch)
tree51f2e3f04ff1b5bb1dcd96aa82e8ba2ee33b09af /Documentation/kernel-parameters.txt
parentf6330c3178112a7b7f18e7f51f1cbb89fa1174c7 (diff)
downloadlinux-6748dcc269e52925993e0d68447858b41b88b4be.tar.xz
PCI / PCIe: Introduce command line option to disable ARI
There are PCIe devices on the market that report ARI support but then fail to initialize correctly when ARI is actually used. This leads to situations in which kernels 2.6.34 and newer fail to handle systems where the previous kernels worked without any apparent problems. Unfortunately, it is currently unknown how many such devices are there. For this reason, introduce a new kernel command line option, pci=noari, allowing users to disable PCIe ARI altogether if they see problems with PCIe device initialization. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'Documentation/kernel-parameters.txt')
-rw-r--r--Documentation/kernel-parameters.txt1
1 files changed, 1 insertions, 0 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 7dc523e082a2..3d153e5723b4 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -2116,6 +2116,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
off: Turn realloc off
on: Turn realloc on
realloc same as realloc=on
+ noari do not use PCIe ARI.
pcie_aspm= [PCIE] Forcibly enable or disable PCIe Active State Power
Management.