** Changed in: linux (Ubuntu)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1703437
Title:
New ACPI identifiers for ThunderX SMMU
Status in linux package in Ubuntu:
Fix Committed
Status in linux source package in Zesty:
In Progress
Bug description:
[Impact]
With current firmware (e.g. AMI 018 for CRBs), Cavium ThunderX-based nodes in
ACPI mode fail to boot due to an undetected SMMU device. This doesn't impact
the currently certified Cavium ThunderX-based systems, which boot in non-ACPI
mode by default. However, future ThunderX-based platforms will likely use ACPI
by default, and they would suffer from this bug.
[Test Case]
Boot a Cavium CRB w/ 018 firmware. Note that lack of SMMU boot messages, and
the failure to boot due to undetected devies (specifically, no root disk found).
[Regression Risk]
The upstream fix is adding support for new device IDs, which were previously
unsupported and would've previously failed to probe w/ -ENODEV.
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