Re: supporting large memory on alphas today

[Greg Lindahl <lindahl cs virginia edu>]

> Is this going to work for drivers which never expected to have ISA
> versions or need bounce buffers?

It looks like sd.c does all the real work for bounce buffers; the
scsi driver doesn't need a modification. Actually, it looks like that
for scsi reads, the resulting buffer is going to end up below the
threshold (no bouncing), so my 8GB system is going to be limited to
4GB of cache.

> Or for example ones which push lumps of
> machine code to the SCSI controller for them to execute?

I *think* these are OK since they will never see a buffer to use with
an address bigger than 4 GB.

-- g