[vfio-users] (good) working GPU for passthrough?

[Tobias Geiger]

> On Thu, Jan 17, 2019 at 11:03:03PM +0100, Tobias Geiger wrote:
>> Hello!
>>
>> after nearly 5 years of passing through my Radeon HD7800 - it feels old and
>> slow when used with newer games and 1GB of RAM also doesn't feel right
>> anymore...
>>
>> I tried a VEGA 64 - i was able to live with the ACS patch needed here (Z170
>> Chipset... not needed with the old HD7800, but whatever...) - but i couldn't
>> stand the reset/FLR/Bug which forces you at least to suspend/resume the host
>> when you want to reboot only the guest...
>>
>> So my question is - AMD or NVIDIA, i dont care, cheap or superexpensive (ok,
>> not the quadros) - what do you recommend these days for a hassle-free
>> passthrough experienence (well at least mostly - acs patch needed would be
>> ok, reset bug not so... it just makes it unhandy to use in day-to-day
>> scenarios...)
> Wouldn't needing the ACS patch depend on your mobo as opposed to your GPU?


I thought so, too! But then this: For my old HD7850 i do NOT need ACS 
patch, to get it working flawlessly in my Z170 Board - it works with a 
debian standard kernel even;

The Vega 64 - in the same slot, same board - needs the ACS patch...

dont ask me why... i can only guess it might have to do with the pci 
bridges "within" the Vega64... but thats not more than a very uneducated 
guess....


Greetings!


>
> fwiw I have had a flawless experience passing through a GTX1080 with multiple
> dynamic rebinding events.
>> Thanks very much!
>>
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