arm64: Also populate tpidr_el2
Needs ReviewPublic
Actions

Authored by andrew on Oct 22 2024, 5:37 PM.

Tags

None

Referenced Files

	Unknown Object (File)
	Thu, Jan 15, 4:19 PM

	Unknown Object (File)
	Sun, Jan 11, 12:04 AM

	Unknown Object (File)
	Wed, Jan 7, 9:26 PM

	Unknown Object (File)
	Dec 12 2025, 5:46 PM

	Unknown Object (File)
	Dec 12 2025, 4:35 PM

	Unknown Object (File)
	Nov 23 2025, 9:39 PM

	Unknown Object (File)
	Oct 23 2025, 3:48 PM

	Unknown Object (File)
	Oct 23 2025, 3:48 PM

View All 45 Files

Subscribers

emaste

imp

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.

Diff Detail

Repository

rG FreeBSD src repository

Lint

Lint Skipped

Unit

Tests Skipped

Build Status

Buildable 60155
Build 57039: arc lint + arc unit

Event Timeline

andrew created this revision.Oct 22 2024, 5:37 PM

Herald added a reviewer: manu. · View Herald TranscriptOct 22 2024, 5:37 PM

Herald added subscribers: emaste, imp. · View Herald Transcript

andrew requested review of this revision.Oct 22 2024, 5:37 PM

Harbormaster completed remote builds in B60155: Diff 145358.Oct 22 2024, 5:37 PM

andrew added a child revision: D47245: dev/psci: Allow smccc.h to be included from asm.Oct 22 2024, 5:37 PM

Revision Contents
Changeset List

Path

Size

sys/

arm64/

machdep.c

6 lines

mp_machdep.c

4 lines

Diff 145358

View Options

sys/arm64/arm64/machdep.c