On Fri, 25 May 2018, Christoph Hellwig wrote:
x86/pci-dma: ...
Please
> 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
Rev
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
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.../admin-guide/kernel-parameters.txt | 1 -
Documentation/x86/x86_64/boo
