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| author | Christoph Hellwig <hch@lst.de> | 2018-04-27 10:13:24 +0300 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2018-05-28 13:48:16 +0300 |
| commit | 06e9552f5f12564dc1c3483f0934d96cc4f72f18 (patch) | |
| tree | 48c92eba3b3c1a7e8576fc84159183481e5e2960 /Documentation/admin-guide | |
| parent | 84564d1c76255ac6d5fb76c85818cb5961fad061 (diff) | |
| download | linux-06e9552f5f12564dc1c3483f0934d96cc4f72f18.tar.xz | |
x86/pci-dma: remove the experimental forcesac boot option
Limiting the dma mask to avoid PCI (pre-PCIe) DAC cycles while paying
the huge overhead of an IOMMU is rather pointless, and this seriously
gets in the way of dma mapping work.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'Documentation/admin-guide')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 11fc28ecdb6d..6d4a666748dd 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -1705,7 +1705,6 @@ nopanic merge nomerge - forcesac soft pt [x86, IA-64] nobypass [PPC/POWERNV] |