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| author | Olof Johansson <olof@lixom.net> | 2018-07-20 11:02:23 -0700 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2018-07-27 09:36:50 +0200 |
| commit | 58d1131777a4b7c228267b809bd88f7be66edcfb (patch) | |
| tree | 915247adf72282f7594fb17bfcfef6307754a5cb /Documentation | |
| parent | c52c72d3dee81af893cee0414444818ed91e2e11 (diff) | |
| download | linux-58d1131777a4b7c228267b809bd88f7be66edcfb.tar.gz linux-58d1131777a4b7c228267b809bd88f7be66edcfb.tar.bz2 linux-58d1131777a4b7c228267b809bd88f7be66edcfb.zip | |
iommu: Add config option to set passthrough as default
This allows the default behavior to be controlled by a kernel config
option instead of changing the commandline for the kernel to include
"iommu.passthrough=on" or "iommu=pt" on machines where this is desired.
Likewise, for machines where this config option is enabled, it can be
disabled at boot time with "iommu.passthrough=off" or "iommu=nopt".
Also corrected iommu=pt documentation for IA-64, since it has no code that
parses iommu= at all.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index efc7aa7a0670..d79c14d0b1f0 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -1716,7 +1716,8 @@ merge nomerge soft - pt [x86, IA-64] + pt [x86] + nopt [x86] nobypass [PPC/POWERNV] Disable IOMMU bypass, using IOMMU for PCI devices. |