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From: Dominik Csapak <d.csapak@proxmox.com>
To: Fiona Ebner <f.ebner@proxmox.com>,
	Proxmox VE development discussion <pve-devel@lists.proxmox.com>
Subject: Re: [pve-devel] [PATCH docs] qm: pci passthrough: correct note about using 'softdep'
Date: Tue, 24 Feb 2026 12:30:33 +0100	[thread overview]
Message-ID: <7c60c589-ff07-4777-81bf-05cec08bf378@proxmox.com> (raw)
In-Reply-To: <0d2e34b4-2ff0-43f4-959e-8ad74f56205c@proxmox.com>



On 2/24/26 12:27 PM, Fiona Ebner wrote:
> Am 19.12.25 um 9:30 AM schrieb Dominik Csapak:
>> In most cases with passthrough, the vfio-pci driver is preferred to what
>> the kernel would normally load (e.g. amdgpu/nouveau), so 'softdep' can
>> be used to make sure 'vfio-pci' is loaded before the actual module.
>>
>> This is expressed in our docs already with a sensible example, but the
>> text is wrong, since it says 'load the gpu modules *before* loading
>> vfio-pci'.
>>
>> So simply correct the 'before' to 'after'.
>>
>> Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
>> ---
>>   qm-pci-passthrough.adoc | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/qm-pci-passthrough.adoc b/qm-pci-passthrough.adoc
>> index 52b1d58..3520983 100644
>> --- a/qm-pci-passthrough.adoc
>> +++ b/qm-pci-passthrough.adoc
>> @@ -254,7 +254,7 @@ xref:qm_pci_passthrough_update_initramfs[update the `initramfs`] again and
>>   reboot after that.
>>   
>>   Should this not work, you might need to set a soft dependency to load the gpu
>> -modules before loading 'vfio-pci'. This can be done with the 'softdep' flag, see
>> +modules after loading 'vfio-pci'. This can be done with the 'softdep' flag, see
>>   also the manpages on 'modprobe.d' for more information.
>>   
>>   For example, if you are using drivers named <some-module>:
> 
> Since the example uses "pre: vfio-pci", do you have any objection to
> also formulate the sentence here to match this:
> 
> "...soft dependency to load 'vfio-pci' before loading the GPU modules."
> 
> ?

yeah sure, makes sense, that was probably the source of the confusion 
here originally..




  reply	other threads:[~2026-02-24 11:29 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-12-19  8:30 Dominik Csapak
2026-02-24 11:28 ` Fiona Ebner
2026-02-24 11:30   ` Dominik Csapak [this message]
2026-02-24 11:40 ` applied: " Fiona Ebner

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