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authorSuravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>2016-04-01 15:06:01 +0200
committerJoerg Roedel <jroedel@suse.de>2016-04-07 13:29:41 +0200
commitca3bf5d47cec8b7614bcb2e9132c40081d6d81db (patch)
tree3ab1b984c7780ad3bfce7b5636693f3edd91025b /Documentation/kernel-parameters.txt
parentiommu/amd: Add new map for storing IVHD dev entry type HID (diff)
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iommu/amd: Introduces ivrs_acpihid kernel parameter
This patch introduces a new kernel parameter, ivrs_acpihid. This is used to override existing ACPI-HID IVHD device entry, or add an entry in case it is missing in the IVHD. Signed-off-by: Wan Zongshun <Vincent.Wan@amd.com> Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'Documentation/kernel-parameters.txt')
-rw-r--r--Documentation/kernel-parameters.txt7
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index ecc74fa4bfde..8c881a5f7af0 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1767,6 +1767,13 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
PCI device 00:14.0 write the parameter as:
ivrs_hpet[0]=00:14.0
+ ivrs_acpihid [HW,X86_64]
+ Provide an override to the ACPI-HID:UID<->DEVICE-ID
+ mapping provided in the IVRS ACPI table. For
+ example, to map UART-HID:UID AMD0020:0 to
+ PCI device 00:14.5 write the parameter as:
+ ivrs_acpihid[00:14.5]=AMD0020:0
+
js= [HW,JOY] Analog joystick
See Documentation/input/joystick.txt.