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Differential D33417

Do not call iommu_map_msi when ctx is NULL
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Authored by jsm on Dec 13 2021, 5:53 PM.
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imp

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manu
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Summary

Building arm64 kernel on Pinebook Pro with IOMMU enabled, and an populated pci slot (with an m.2 ssd) the kernel fails at iommu_map_msi at domain = ctx->domain, because ctx is null. Add a test if ctx is null before the call.

Test Plan

The patch works for me.

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rG FreeBSD src repository
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jsm created this revision.Dec 13 2021, 5:53 PM
Herald added a reviewer: manu. · View Herald TranscriptDec 13 2021, 5:53 PM
Herald added subscribers: emaste, andrew, imp. · View Herald Transcript
jsm requested review of this revision.Dec 13 2021, 5:53 PM
dsl added a subscriber: dsl.Dec 26 2021, 9:45 PM
dsl added a comment.Dec 26 2021, 9:48 PM

I've just got a kernel panic at the same place with IOMMU enabled and DPAA2 driver WIP on Honeycomb board.

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sys/
arm64/
arm64/
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sys/arm64/arm64/gicv3_its.c

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