Messages in this thread | | | Subject | Re: Poor windows VFIO performance, GPU stalls (bisected) | From | Chris Wilson <> | Date | Sun, 26 Jul 2020 15:15:49 +0100 |
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Quoting Alex Williamson (2020-07-26 14:30:52) > On Sun, 26 Jul 2020 17:49:07 +1000 > Geoffrey McRae <geoff@hostfission.com> wrote: > > > Hi All, > > > > The commit 22540ca3d00d2990a4148a13b92209c3dc5422db causes a Windows KVM > > guest running under QEMU with a VFIO passthrough GPU to randomly stall > > when using the GPU leading to the guest assuming that the driver has > > hung. Reverting this commit resolves the problem. > > Please double check this commit ID, I can't find it in mainline or > linux-next. Thanks,
See commit aa202f1f5696 ("workqueue: don't use wq_select_unbound_cpu() for bound works"). 22540ca3 is the cherry-pick into v5.4.26 -Chris
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