[Xen-devel] RE: Tmem vs order>0 allocation, workaround RFC

["Jan Beulich" <JBeulich@xxxxxxxxxx>]

>>> Dan Magenheimer <dan.magenheimer@xxxxxxxxxx> 16.02.10 16:05 >>>
>Under what circumstances does dom0 require single-page-below-4G
>allocations?  Is it only for bounce buffers for PCI passthrough
>of old devices with 32-bit addressing limitations?  Or am I
>missing a much more common case?

Not just for pass-through; all devices only supporting 32-bit
addressing would have such requirements, and particularly common
ones are display adapters which have DRM/AGP drivers loaded for
them.

Jan


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