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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] passthrough: viommu: remove 'amd_iommu=on' from the docs
Date: Wed, 24 Jul 2024 12:16:44 +0200	[thread overview]
Message-ID: <6052ced1-5755-4231-b102-8bb6fa097dae@proxmox.com> (raw)
In-Reply-To: <7b89263e-0efa-44fc-b5d4-8acea3684540@proxmox.com>

On 7/24/24 11:59, Fiona Ebner wrote:
> Am 26.04.24 um 09:58 schrieb Dominik Csapak:
>> this is wrong and does nothing, see previous commit:
>> 0c54d61 (remove 'amd_iommu=on' from the passthrough docs)
>> and
>> https://www.kernel.org/doc/html/latest/admin-guide/kernel-parameters.html?highlight=amd_iommu
>>
>> Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
>> ---
>>   qm-pci-passthrough.adoc | 3 +--
>>   1 file changed, 1 insertion(+), 2 deletions(-)
>>
>> diff --git a/qm-pci-passthrough.adoc b/qm-pci-passthrough.adoc
>> index bbd6b85..14f7fa5 100644
>> --- a/qm-pci-passthrough.adoc
>> +++ b/qm-pci-passthrough.adoc
>> @@ -511,8 +511,7 @@ There are currently two vIOMMU implementations available: Intel and VirtIO.
>>   
>>   Host requirement:
>>   
>> -* Add `intel_iommu=on` or `amd_iommu=on` depending on your CPU to your kernel
>> -command line.
>> +* Add `intel_iommu=on` depending on your CPU to your kernel command line.
>>   
> 
> IMHO saying "For Intel CPUs, add ..." sounds nicer than "add ...
> depending on your CPU" together with your change. And we could also
> mention that it's only required for kernels before 6.8 and nothing for
> AMD CPUs?

Makes sense, but i'd probably leave the kernel version part out,
since that changed in the kernel a few times already (and activating it
if it's default shouldn't hurt much)

Long term i'd like to make that a gui feature anyway where
we automatically do the right thing

> 
>>   Intel vIOMMU
>>   ^^^^^^^^^^^^



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      reply	other threads:[~2024-07-24 10:16 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-04-26  7:58 Dominik Csapak
2024-07-24  9:59 ` Fiona Ebner
2024-07-24 10:16   ` Dominik Csapak [this message]

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