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