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| author | Vasant Hegde <vasant.hegde@amd.com> | 2026-08-24 06:29:07 +0000 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2026-09-07 14:38:58 +0200 |
| commit | eb29b7bbc8ba28bbb0b9fdd655e931e1d1fa625c (patch) | |
| tree | defa07eb2856acfa2e0552f17688d5269884ab1e /scripts | |
| parent | 00a7dd64888d6dd72110b40e2824a088cf7b7386 (diff) | |
| download | linux-eb29b7bbc8ba28bbb0b9fdd655e931e1d1fa625c.tar.gz linux-eb29b7bbc8ba28bbb0b9fdd655e931e1d1fa625c.zip | |
iommu/amd: Fix premature break in init_iommu_one() again
Commit 283d245468a2 ("iommu/amd: Fix premature break in
init_iommu_one()") unintentionally broke older platforms - such as
the ASRockRack B550D4-4L - where the BIOS advertises incorrect IOMMU
features.
Move the HATDis check ahead of the GASup check, and re-introduce the
break inside the GASup check to restore correct behavior on affected
platforms.
This is a short-term fix to resolve the regression. Longer term, we
should rework how EFRs are tracked and prioritize the MMIO-advertised
EFR over the one reported via IVRS. That requires more extensive
changes and will be addressed separately.
Fixes: 283d245468a2 ("iommu/amd: Fix premature break in init_iommu_one()")
Reported-by: Andreas Juch <andreas@juch.cc>
Closes: https://lore.kernel.org/linux-iommu/07b2d390-f7a0-47e2-bc2c-eb0853acf52e@juch.cc/
Tested-by: Andreas Juch <andreas@juch.cc>
Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'scripts')
0 files changed, 0 insertions, 0 deletions