[pve-devel] Fixed not working pci_dev_reset for vfio devices

[Alexandre DERUMIER]

>>You need to specify custom cpu flags: 
>>args: -cpu "host,hv_spinlocks=0xffff,hv_relaxed,+x2apic,kvm=off" 

Oh, thanks !
I'll make a patch for this (add kvm=off, if x-vga=on), when next pve-qemu-kvm will be released



----- Mail original ----- 

De: "Kamil Trzciński" <ayufan at ayufan.eu> 
À: "Kamil Trzciński" <ayufan at ayufan.eu> 
Cc: "Alexandre DERUMIER" <aderumier at odiso.com>, pve-devel at pve.proxmox.com 
Envoyé: Lundi 30 Juin 2014 10:00:44 
Objet: Re: [pve-devel] Fixed not working pci_dev_reset for vfio devices 

One more thing. Newer GeForce cards checks for KVM presence. More info 
there: https://lists.gnu.org/archive/html/qemu-devel/2014-06/msg00302.html. 

You need to specify custom cpu flags: 
args: -cpu "host,hv_spinlocks=0xffff,hv_relaxed,+x2apic,kvm=off" 



On Mon, Jun 30, 2014 at 9:58 AM, Kamil Trzciński <ayufan at ayufan.eu> wrote: 
> The last time I tried it wasn't working. It most probably due to some 
> issues with integrated and discrete graphics on newer boards. Take a 
> look there: https://bbs.archlinux.org/viewtopic.php?id=162768. 
> 
> Kamil 
> 
> 
> On Mon, Jun 30, 2014 at 9:41 AM, Alexandre DERUMIER <aderumier at odiso.com> wrote: 
>> Thanks for the infos, 
>> 
>> I'll update the wiki soon. 
>> 
>>>>I also use this patch for qemu: 
>>>>https://github.com/ayufan/pve-qemu-kvm-with-vfio/commit/afee03e8739cf9ee78408bec9a62cf5c558860f9 
>> 
>> Ok, should be ready in next pve-qemu-kvm 
>> 
>> 
>>>>And this patches for kernel: 
>>>>https://github.com/ayufan/linux-kernel-with-vga-passthrough/commits/vfio 
>> 
>> Do you have tried last pve 3.10 kernel ? 
>> 
>> 
>> ----- Mail original ----- 
>> 
>> De: "Kamil Trzciński" <ayufan at ayufan.eu> 
>> À: "Alexandre DERUMIER" <aderumier at odiso.com> 
>> Cc: "Kamil Trzciński" <ayufan at ayufan.eu>, pve-devel at pve.proxmox.com 
>> Envoyé: Lundi 30 Juin 2014 09:37:30 
>> Objet: Re: [pve-devel] Fixed not working pci_dev_reset for vfio devices 
>> 
>> MB: ASUS H81M-E (with integrated graphics) 
>> GFX: GeForce GTX660 
>> 
>> I also use this patch for qemu: 
>> https://github.com/ayufan/pve-qemu-kvm-with-vfio/commit/afee03e8739cf9ee78408bec9a62cf5c558860f9 
>> 
>> And this patches for kernel: 
>> https://github.com/ayufan/linux-kernel-with-vga-passthrough/commits/vfio 
>> 
>> grub.cfg: 
>> GRUB_CMDLINE_LINUX="intel_iommu=on" 
>> 
>> modules + initramfs: 
>> kvm ignore_msrs=1 
>> pci_stub ids=10de:11c0,10de:0e0b,8086:0412,8086:0c0c,8086:82c0 
>> 
>> And my lspci: 
>> 00:02.0 VGA compatible controller [0300]: Intel Corporation Haswell 
>> Integrated Graphics Controller [8086:0412] (rev 06) 
>> 01:00.0 VGA compatible controller [0300]: NVIDIA Corporation Device 
>> [10de:11c0] (rev a1) 
>> 01:00.1 Audio device [0403]: NVIDIA Corporation Device [10de:0e0b] (rev a1) 
>> 
>> 
>> On Mon, Jun 30, 2014 at 9:26 AM, Alexandre DERUMIER <aderumier at odiso.com> wrote: 
>>>>>Yes, I use it for some quite of time for my Windows machine on which I 
>>>>>play games ;) 
>>> 
>>> Oh Great ! :) 
>>> 
>>> which graphic card model ? 
>>> 
>>> Do you have tuned grub.cfg ? (I'm thinking of iommu module) 
>>> 
>>> 
>>> 
>>> ----- Mail original ----- 
>>> 
>>> De: "Kamil Trzciński" <ayufan at ayufan.eu> 
>>> À: "Alexandre DERUMIER" <aderumier at odiso.com> 
>>> Envoyé: Lundi 30 Juin 2014 08:54:15 
>>> Objet: Re: [pve-devel] Fixed not working pci_dev_reset for vfio devices 
>>> 
>>> Yes, I use it for some quite of time for my Windows machine on which I 
>>> play games ;) 
>>> 
>>> This is how looks my config: 
>>> vga: serial0 
>>> machine: q35 
>>> hostpci0: 01:00,pcie=1,driver=vfio,x-vga=on 
>>> 
>>> 
>>> On Mon, Jun 30, 2014 at 8:12 AM, Alexandre DERUMIER <aderumier at odiso.com> wrote: 
>>>> Thanks for your patch! 
>>>> 
>>>> By the way, I need some tester for vfio-vga and pci express passthrough 
>>>> Do you have tested it ? 
>>>> 
>>>> machine : q35 
>>>> hostpci0 : 00:01, pcie=1,x-vga=on 
>>>> 
>>>> ----- Mail original ----- 
>>>> 
>>>> De: "Kamil Trzciński" <ayufan at ayufan.eu> 
>>>> À: pve-devel at pve.proxmox.com 
>>>> Envoyé: Dimanche 29 Juin 2014 21:41:36 
>>>> Objet: [pve-devel] Fixed not working pci_dev_reset for vfio devices 
>>>> 
>>>> Description in subject 
>>>> 
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