Re: [PATCH v2 1/1] iommu/vt-d: Remove INTEL_IOMMU_BROKEN_GFX_WA

Baolu Lu
2024-01-30T06:39:11Z

On 2024/1/30 14:24, Tian, Kevin wrote:
>> From: Lu Baolu <baolu.lu@linux.intel.com>
>> Sent: Tuesday, January 30, 2024 2:08 PM
>>
>> Commit 62edf5dc4a524 ("intel-iommu: Restore DMAR_BROKEN_GFX_WA
>> option for
>> broken graphics drivers") was introduced 24 years ago as a temporary
>> workaround for graphics drivers that used physical addresses for DMA and
>> avoided DMA APIs. This workaround was disabled by default.
>>
>> As 24 years have passed, it is expected that graphics driver developers
>> have migrated their drivers to use kernel DMA APIs. Therefore, this
>> workaround is no longer required and could been removed.
>>
>> The Intel iommu driver also provides a "igfx_off" option to turn off
>> the DAM translation for the graphic dedicated IOMMU. Hence, there is
>> really no good reason to keep this config option.
>>
>
> s/DAM/DMA/

Fixed. :-)

Best regards,
baolu