On Sat, May 26, 2018 at 03:22:26PM +0200, Greg KH wrote: > On Fri, May 25, 2018 at 09:03:07AM -0400, Mike Haboustak wrote: > > The following commit fixes freezes in virtio device drivers when KVM > > is nested under > > VMWare Workstation/ESXi or Hyper-V. I've encountered problems running KVM > > inside VMWare since upgrading to Debian 9 (currently testing 4.9.88-1+deb9u1). > > > > d391f1207067268261add0485f0f34503539c5b0 > > > > The same issue affects 4.4.y as well. A git-bisect within my > > environment stopped at > > e9ea5069d9e569c32ab913c39467df32e056b3a7, where the KVM capability was added > > that QEMU checks before enabling fast mmio. > > The patch does not apply to 4.9.y or 4.4.y, can you please provide a > working backport? I will be glad to queue it up then. > Greg, Sorry for taking so long to get back to you. I wanted to ensure the backport was tested before sending, and it took me a while to prioritize it. I've run the patch I'll be sending in 4.9.y extensively, and in 4.4.y enough to be confident that the issue is resolved. Thanks, mike