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arm64: Also populate tpidr_el2
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Authored by andrew on Oct 22 2024, 5:37 PM.
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Details

Reviewers
manu
Group Reviewers
arm64
Summary

When enabling the Software Delegated Exception Interface (SDEI) the
firmware may trash tpidr_el1. As this is used to store the per-cpu
data pointer this causes issues when we need to access this memory,
e.g. in a non-SDEI exception.

Fix this by also storing the per-CPU pointer value in tpidr_el2 when
in VHE as this isn't trashed.

Sponsored by: Arm Ltd

Diff Detail

Repository
rG FreeBSD src repository
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Lint Skipped
Unit
Tests Skipped
Build Status
Buildable 60155
Build 57039: arc lint + arc unit