Well, it finally happened: ASUS added ACS support in the BIOS.
Don't know if they did if because of the ticket or because they felt it
was the right thing to do but with BIOS version 1403 my Crosshair VI
Hero doesn't require the ACS patch anymore.
The 'ACS Enable' option is located under Advanced/A
I can confirm the ACS patch works. Both of my cards are now in separate
iommu groups and running a Windows 10 VM with the Geforce passed
through works just fine.
AVIC also works. My BIOS doesn't have any options related to it,
passing kvm_amd.avic=1 is enough to enable it.
dmesg: https://paste.poun
Don't know if that's the cause for the amdgpu driver to fail but in your
libvirt xml you are splitting the multifunction device into two separate
devices.
For the primary device you have:
source:
virtual:
And for the audio subdevice you have:
source:
virtual:
Which should reside on the same
Crossfire requires a mainboard chipset which supports crossfire. Qemu
can emulate a 440fx or q35 chipset, neither of them are listed in AMD's
compatibility chart [1].
AMD stopped using bridging ports a few years ago and switched to XDMA
for GPU intercommunication. That means all communication is d
le
of debugging the kernel, therefore bisecting was my only hope...
Regards,
Friedrich
On 01/17/2016 10:29 AM, Friedrich Oslage wrote:
> Hi,
>
> my host system is linux-4.4.0 with qemu-2.5.0 and a 4-core i7. Linux is
> booted with isolcpus=1-3,5-7 to reserve 3 cores + threads for the
>
Hi,
my host system is linux-4.4.0 with qemu-2.5.0 and a 4-core i7. Linux is
booted with isolcpus=1-3,5-7 to reserve 3 cores + threads for the
Windows 10 VM.
The VM's 3 cores(2 threads each) are pinned to the respective physical
core/thread. The iothread is pinned to 1-3,5-7.
When i start a simple
