Differential D58024

acpi: Add a pseudo-bus for APEI devices to manage resources
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Authored by jhb on Jul 3 2026, 4:01 PM.

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imp
gallatin
mav
jkim

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rG9313f6b01485: acpi: Add a pseudo-bus for APEI devices to manage resources

Summary

Different APEI tables can reuse the same registers (and sometimes
different views of the same register, e.g. 32- vs 64-bit mappings of
the same register). To enable this sharing, apei0 now acts as a bus
device managing a pool of allocated resources and handing out mappings
to child devices which handle individual tables.

Most of the previous apei(4) driver has been moved into a new
hest0 device that is a child of apei0.

Sponsored by: Netflix

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rG FreeBSD src repository

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Event Timeline

jhb requested review of this revision.Jul 3 2026, 4:01 PM

jhb created this revision.

Harbormaster completed remote builds in B74501: Diff 181257.Jul 3 2026, 4:01 PM

jhb added a child revision: D58025: acpi_einj: Support for ACPI error injection.Jul 3 2026, 4:01 PM

Fix a malloc type mismatch noted by Claude

Harbormaster completed remote builds in B74505: Diff 181261.Jul 3 2026, 4:25 PM

gallatin accepted this revision.Jul 3 2026, 4:49 PM

This revision is now accepted and ready to land.Jul 3 2026, 4:49 PM

imp added inline comments.Jul 7 2026, 6:16 PM

sys/dev/acpica/acpi_apei_bus.c
114	Why create a fake one?

Closed by commit rG9313f6b01485: acpi: Add a pseudo-bus for APEI devices to manage resources (authored by jhb). · Explain WhyJul 7 2026, 7:18 PM

This revision was automatically updated to reflect the committed changes.

jhb added a commit: rG9313f6b01485: acpi: Add a pseudo-bus for APEI devices to manage resources.

Revision Contents
Changeset List

Path

Size

sys/

conf/

2 lines

dev/

acpica/

159 lines

acpi_apei_bus.c

435 lines

49 lines

54 lines

Diff 181476

sys/conf/files

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sys/dev/acpica/acpi_apei.c

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sys/dev/acpica/acpi_apei_bus.c

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sys/dev/acpica/apei_if.m

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sys/dev/acpica/apeivar.h

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