On Mon, Jul 15, 2019 at 06:33:00PM +1000, Alexey Kardashevskiy wrote:
>
>
> On 13/07/2019 01:20, Christoph Hellwig wrote:
> > > This skips the 32bit DMA setup check if the bypass is can be selected.
> >
> > That sentence does not parse. I think you need to dop the "can be"
> > based on the
On 13/07/2019 01:20, Christoph Hellwig wrote:
This skips the 32bit DMA setup check if the bypass is can be selected.
That sentence does not parse. I think you need to dop the "can be"
based on the actual patch.
"the 32bit DMA setup check" is
"if (!(tbl = get_iommu_table_base(dev)))".
I
> This skips the 32bit DMA setup check if the bypass is can be selected.
That sentence does not parse. I think you need to dop the "can be"
based on the actual patch.
POWER8 and newer support a bypass mode which maps all host memory to
PCI buses so an IOMMU table is not always required. However if we fail to
create such a table, the DMA setup fails and the kernel does not boot.
This skips the 32bit DMA setup check if the bypass is can be selected.
