Re: [BUG][AMD IOMMU][VFIO] IVMD exclusion ranges block GPU passthrough on ASUS GA403UI, reproduced on 7.4-rc0

[Vasant Hegde]

Hi Cesar,


On 10/22/2026 11:22 PM, César Zapata wrote:
> Algunos contactos que recibieron este mensaje no suelen recibir correos electrónicos de el_caesar@xxxxxxxxxxx. Por qué es esto importante<https://aka.ms/LearnAboutSenderIdentification>
> Hello,
> I would like to report a reproducible AMD IOMMU/VFIO issue on an ASUS ROG Zephyrus G14 GA403UI, now confirmed using an upstream Linux Mainline Vanilla 7.4.0-rc0 kernel without the proprietary NVIDIA driver.
> The firmware publishes broad IVMD exclusion ranges that Linux exposes as IOMMU_RESV_DIRECT. Consequently, VFIO refuses to establish an IOMMU domain for an otherwise isolated NVIDIA GPU.
> System information

Thanks for the report. I believe below mention series should fix this issue.

@Suravee, Can you respin the series?

-Vasant