Bug#1141183: src:linux: I/O errors on SATA devices related to IOMMU

From	Tj <tj.iam.tj@proton.me>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#1141183: src:linux: I/O errors on SATA devices related to IOMMU
Date	2026-07-13 00:10 +0200
Message-ID	<Ngax3-4ndE-19@gated-at.bofh.it> (permalink)
References	<NbNfH-1X6L-17@gated-at.bofh.it> <NbOY9-1YaS-7@gated-at.bofh.it> <Ng7Sx-4lHx-17@gated-at.bofh.it> <NbNfH-1X6L-17@gated-at.bofh.it> <Ng7Sx-4lHx-17@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Cross-posted to 2 groups.

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> Also regarding you questions on IRC last week: I hope you don't forget
> that Debian does some changes to the default IOMMU configuration.  So
> applying the same config to an upstream kernel will need explicit
> setting the wanted iommu state.
Yes, we're testing with the related Debian config (now without any 
Debian patches though)

# CONFIG_INTEL_IOMMU_DEFAULT_ON is not set
CONFIG_INTEL_IOMMU_DEFAULT_ON_INTGPU_OFF=y
# CONFIG_INTEL_IOMMU_DEFAULT_OFF is not set

and  intel_iommu=on

Originally we suspected an interaction with the Debian IOMMU intgpu 
patches but were able to rule them out.

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Bug#1141183: src:linux: I/O errors on SATA devices related to IOMMU Tj <tj.iam.tj@proton.me> - 2026-07-01 00:20 +0200
  Bug#1141183: src:linux: I/O errors on SATA devices related to IOMMU Bastian Blank <waldi@debian.org> - 2026-07-12 21:20 +0200
    Bug#1141183: src:linux: I/O errors on SATA devices related to IOMMU Tj <tj.iam.tj@proton.me> - 2026-07-13 00:10 +0200

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