Re: alpha iommu fixes

[Andi Kleen]

On Mon, May 21, 2001 at 03:34:50AM -0700, David S. Miller wrote:
> 
> Andi Kleen writes:
>  > [BTW, the 2.4.4 netstack does not seem to make any attempt to handle the
>  > pagecache > 4GB case on IA32 for sendfile, as the pci_* functions are dummies 
>  > here.  It probably needs bounce buffers there for this case]
> 
> egrep illegal_highdma net/core/dev.c

There is just no portable way for the driver to figure out if it should
set this flag or not. e.g. acenic.c gets it wrong: it is unconditionally
set even on IA32. Currently it requires an architecture ifdef to set properly.

-Andi