On 2016-03-11 at 13:10 "'Kanoj Sarcar' via Akaros" <[email protected]> wrote: > I quickly browsed the patchset, technically looks ok. When you are > ready, please push them, and I will try out my tests.
If you "git checkout -b temp origin/pat" you should be able to build and test it out. Or I could just push it. > One issue I have is that the behavior is subtly changed vs Linux. In > the future, if we port a Linux driver that uses UC- using > Linux's well known pgprot_noncached() and MTRR api's to overwrite to > WC, it will take just a little more effort (if we notice > the subtle difference) to make it work as intended on Akaros I'd like to avoid using the MTRRs if possible. If someone wants a WC region, I'd rather map it our way. But maybe that's unavoidable. Regardless, one change I could make to my patchset would be to change the UC to UC- in our PAT setup for PAT 3. That would mean we don't have UC anywhere, but since we avoid using MTRRs (for the most part), then UC- has the same effect as UC. In that case, pgprot_noncached would have the same UC- semantics as on Linux. How does that sound? Barret -- You received this message because you are subscribed to the Google Groups "Akaros" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. For more options, visit https://groups.google.com/d/optout.
