[Bug 196409] kvm_amd nested pagetable gpu passthrough performance oddities

bugzilla-daemon
2017-08-01T05:10:38Z

mfadom99@hotmail.com changed:

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CC| |mfadom99@hotmail.com

--- Comment #7 from mfadom99@hotmail.com ---
Same issue with kernel 4.10 - 4.12 here.

CPU - AMD Ryzen 7 1700
MB - Asus Prime x370 Pro
Host GPU - NVidia GTX 750ti
VFIO GPU - AMD Radeon RX480
Host OS - Manjaro 17.2
Guest OS - Windows 10

With npt=1, everything is fast, except GPU fps is 10-15 in Skyrim
with npt=0, everything is slow, GPU fps is ~30 in Skyrim