On Friday, May 4, 2018 12:39:12 AM PDT Chris Wilson wrote: > Quoting Kenneth Graunke (2018-05-04 08:34:07) > > On Thursday, May 3, 2018 11:53:24 PM PDT Chris Wilson wrote: > > > Quoting Kenneth Graunke (2018-05-04 02:12:40) > > > > This isn't strictly necessary, but anyone running Cannonlake will > > > > already have Kernel 4.5 or later, so there's no reason to support > > > > the relocation model on Gen10+. > > > > > > /o\ gvt. Need I say more? > > > -Chris > > > > Yes. What's the deal with GVT? > > Their current restrictions involve forcing the use of a 32b > aliasing-ppgtt. Not that they support cnl+ yet, so they might remember > to lift that restriction in time. > -Chris
Wow, that's really miserable. So, we can't actually depend on real PPGTT existing? Do you know if/when they might fix this? This seriously wrecks a lot of my plans if we can't assume PPGTT and have to deal with relocations for all of eternity. Jason and I have been planning on doing PPGTT-only drivers for months. We figured that full PPGTT had been working since Gen8 and surely would be viable on anything modern. If it weren't for enterprise kernels, I would have required this all the way back to Gen8 in a heartbeat. --Ken
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