Received-SPF: pass (google.com: domain of linux-kernel+bounces-51096-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45d1:ec00::1 as permitted sender) client-ip=2604:1380:45d1:ec00::1;
From: Mark Brown <broonie@kernel.org>
Subject: [PATCH v2 0/2] arm64/sme: Fix handling of traps on resume
Date: Sat, 03 Feb 2024 13:00:39 +0000
Message-Id: <20240203-arm64-sme-resume-v2-0-a1fbaddc4425@kernel.org>
Precedence: bulk
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
To: Catalin Marinas <catalin.marinas@arm.com>, 
 Will Deacon <will@kernel.org>
Cc: Dave Martin <Dave.Martin@arm.com>, 
 Jackson Cooper-Driver <Jackson.Cooper-Driver@arm.com>, 
 linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, 
 Mark Brown <broonie@kernel.org>

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@kernel.org>
---
Changes in v2:
- Also reinitialise SMPRI_EL1.
- Link to v1: https://lore.kernel.org/r/20240130-arm64-sme-resume-v1-0-0e60ebba18df@kernel.org

---
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      | 16 ++++++++++++++++
 arch/arm64/kernel/suspend.c     |  3 +++
 3 files changed, 21 insertions(+)
---
base-commit: 41bccc98fb7931d63d03f326a746ac4d429c1dd3
change-id: 20240129-arm64-sme-resume-3266150292b6

Best regards,
-- 
Mark Brown <broonie@kernel.org>