Re: ioremap_uc() followed by set_memory_wc() - burrying MTRR

Jason Gunthorpe
2015-04-22T20:46:37Z

On Wed, Apr 22, 2015 at 02:53:11PM -0400, Doug Ledford wrote:

> To be precise, the split is that ipath powers the old HTX bus cards that
> only work in AMD systems, qib is all PCI-e cards. I still have a few
> HTX cards, but I no longer have any systems with HTX slots, so we
> haven't even used this driver in testing for 3 or 4 years now. And
> these are all old SDR cards, where the performance numbers were 800MB/s
> with WC enabled, 50MB/s without it.

Wow, I doubt any HTX systems are still in any kind of use.

It would be a nice clean up to drop the PPC support out of this driver
too. PPC never had HTX.

Jason
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