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arm64/gicv3: Skip programming vPE GITS_BASERs to avoid a boot crash.
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Authored by scottph on Jul 24 2024, 1:15 AM.
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Details

Summary

On AmpereOne, the current programming of GITS_BASER2 to individual
allocations per ITS causes a:

panic: APEI Fatal Hardware Error!

This is due to the ITS reporting a BASER2_DATA_ERR error. The GIC-700
expects all GITS_BASER2.Physical_Address fields to match system-wide.

Skip programming any vPE GITS_BASER registers to avoid this crash.

Sponsored by: Ampere Computing LLC

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rG FreeBSD src repository
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Event Timeline

sys/arm64/arm64/gicv3_its.c
596

s/ther/the/

We don't use the vPE table so it's safe to ignore.

This revision is now accepted and ready to land.Jul 24 2024, 1:30 PM

Thanks Andrew, could you (or anybody else) help merge that? My commit bit is taking a nap at the moment.

@imp, @andrew, @jhb - I was wondering if one of you could commit this please?