[PATCH 0/2] arm64/sme: Fix handling of traps on resume

From: Mark Brown
Date: Mon Jan 29 2024 - 19:14:34 EST


The fast model was recently changed to reset system registers to 0 on
resume, exposing the fact that for SME we do not restore the
configuration of traps for extensions that add state. Fix this.

Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
---
Mark Brown (2):
arm64/sme: Restore SMCR on exit from suspend
arm64/sme: Restore SMCR_EL1.EZT0 on exit from suspend

arch/arm64/include/asm/fpsimd.h | 2 ++
arch/arm64/kernel/fpsimd.c | 15 +++++++++++++++
arch/arm64/kernel/suspend.c | 3 +++
3 files changed, 20 insertions(+)
---
base-commit: 41bccc98fb7931d63d03f326a746ac4d429c1dd3
change-id: 20240129-arm64-sme-resume-3266150292b6

Best regards,
--
Mark Brown <broonie@xxxxxxxxxx>