[ChocolateGod]

I assume on Linux you could use something like daxctl to tell the kernel to treat the vRAM as normal RAM, but I think this would be Intel/AMD only.

[Tuna-Fish]

I don't think it would help. It's not just a software issue that can be fixed in the kernel, the hardware fundamentally isn't part of the cache coherency system of the CPU.

[tiberious726]

This is correct, look at IBM's CAPI for an example of the needed hardware