Re: [PATCH 1/1] Revert "iommu/vt-d: Fix possible recursive locking in intel_iommu_init()"

[Baolu Lu]

On 9/20/22 4:17 PM, Lu Baolu wrote:
> This reverts commit 9cd4f1434479f1ac25c440c421fbf52069079914.
>
> Some issues were reported on the original commit. Some thunderbolt devices
> don't work anymore due to the following DMA fault.
>
> DMAR: DRHD: handling fault status reg 2
> DMAR: [INTR-REMAP] Request device [09:00.0] fault index 0x8080
>        [fault reason 0x25]
>        Blocked a compatibility format interrupt request
>
> Bring it back for now to avoid functional regression.
>
> Fixes: 9cd4f1434479f ("iommu/vt-d: Fix possible recursive locking in intel_iommu_init()")
> Link:https://lore.kernel.org/linux-iommu/485A6EA5-6D58-42EA-B298-8571E97422DE@xxxxxxxxxxxxxxxxx/
> Link:https://bugzilla.kernel.org/show_bug.cgi?id=216497
> Cc: Mika Westerberg<mika.westerberg@xxxxxxxxxxxxxxx>
> Reported-and-tested-by: George Hilliard<thirtythreeforty@xxxxxxxxx>
> Signed-off-by: Lu Baolu<baolu.lu@xxxxxxxxxxxxxxx>

Queued for v6.0.

https://lore.kernel.org/linux-iommu/20220921024054.3570256-1-baolu.lu@xxxxxxxxxxxxxxx

Best regards,
baolu