[vfio-users] W10: installing RX Vega 56 drivers locks up VM

[James Collier]

On Thu, 28 Mar 2019 at 20:32, Tmplt <tmplt at dragons.rocks> wrote:
>
> On 3/28/19 8:02 PM, Kash Pande wrote:
> > kvm module parameter ignore_msrs is needed here.
> Is this much different from the
>
>   echo 1 > /sys/module/kvm/parameters/ignore_msrs

I have a very similar setup with a Sapphire RX Vega 56 and also
observing this lockup.
I am using an unpatched Debian 4.19.0. Qemu 3.1.0. Libvirt 5.0.0. A
single host core is pegged at 100%. I've attached my XML too.
$ cat /sys/module/kvm/parameters/ignore_msrs
Y
I cannot find any logs indicating any problems...
$ sudo journalctl | grep kvm
Mar 28 20:35:52 socrates kernel: Command line:
BOOT_IMAGE=/boot/vmlinuz-4.19.0-4-amd64
root=/dev/mapper/VolGroup00-lvdebian ro iommu=pt
amd_iommu=force_isolation rd.driver.pre=vfio-pci hugepagesz=1GB
hugepages=16 vfio_iommu_type1.allow_unsafe_interrupts=1
kvm.ignore_msrs=1
Mar 28 20:35:52 socrates kernel: Kernel command line:
BOOT_IMAGE=/boot/vmlinuz-4.19.0-4-amd64
root=/dev/mapper/VolGroup00-lvdebian ro iommu=pt
amd_iommu=force_isolation rd.driver.pre=vfio-pci hugepagesz=1GB
hugepages=16 vfio_iommu_type1.allow_unsafe_interrupts=1
kvm.ignore_msrs=1
Mar 28 20:35:52 socrates kernel: kvm: Nested Virtualization enabled
Mar 28 20:35:52 socrates kernel: kvm: Nested Paging enabled
$ sudo journalctl | grep msrs
Mar 28 20:35:52 socrates kernel: Command line:
BOOT_IMAGE=/boot/vmlinuz-4.19.0-4-amd64
root=/dev/mapper/VolGroup00-lvdebian ro iommu=pt
amd_iommu=force_isolation rd.driver.pre=vfio-pci hugepagesz=1GB
hugepages=16 vfio_iommu_type1.allow_unsafe_interrupts=1
kvm.ignore_msrs=1
Mar 28 20:35:52 socrates kernel: Kernel command line:
BOOT_IMAGE=/boot/vmlinuz-4.19.0-4-amd64
root=/dev/mapper/VolGroup00-lvdebian ro iommu=pt
amd_iommu=force_isolation rd.driver.pre=vfio-pci hugepagesz=1GB
hugepages=16 vfio_iommu_type1.allow_unsafe_interrupts=1
kvm.ignore_msrs=1
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