[0/3] arm64/ptrace: Fixes for more SME only streaming SVE cases

Message ID	20230803-arm64-fix-ptrace-ssve-no-sve-v1-0-49df214bfb3e@kernel.org
Headers	Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; From: Mark Brown <broonie@kernel.org> Subject: [PATCH 0/3] arm64/ptrace: Fixes for more SME only streaming SVE cases Date: Thu, 03 Aug 2023 19:33:20 +0100 Message-Id: <20230803-arm64-fix-ptrace-ssve-no-sve-v1-0-49df214bfb3e@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit To: Oleg Nesterov <oleg@redhat.com>, Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org> Cc: David Spickett <David.Spickett@arm.com>, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Mark Brown <broonie@kernel.org>, stable@vger.kernel.org Precedence: bulk
Series	arm64/ptrace: Fixes for more SME only streaming SVE cases \| [0/3] arm64/ptrace: Fixes for more SME only streaming SVE cases [1/3] arm64/ptrace: Don't enable SVE when setting streaming SVE [2/3] arm64/fpsimd: Sync FPSIMD state with SVE for SME only systems [3/3] arm64/fpsimd: Sync and zero pad FPSIMD state for streaming SVE

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20230803-arm64-fix-ptrace-ssve-no-sve-v1-0-49df214bfb3e@kernel.org

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From: Mark Brown <broonie@kernel.org>
Subject: [PATCH 0/3] arm64/ptrace: Fixes for more SME only streaming SVE
 cases
Date: Thu, 03 Aug 2023 19:33:20 +0100
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To: Oleg Nesterov <oleg@redhat.com>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will@kernel.org>
Cc: David Spickett <David.Spickett@arm.com>,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        Mark Brown <broonie@kernel.org>, stable@vger.kernel.org
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Series

arm64/ptrace: Fixes for more SME only streaming SVE cases |

Message

Mark Brown Aug. 3, 2023, 6:33 p.m. UTC

  When we added support for streaming mode SVE there were several missed
cases around ptrace, address them.  Some could be seen on systems which
do physically have SVE, others would only impact SME only systems.  The
Fixes: tag is a bit conservative for the SME only cases but it seems
like the safest and clearest choice.

Signed-off-by: Mark Brown <broonie@kernel.org>
---
Mark Brown (3):
      arm64/ptrace: Don't enable SVE when setting streaming SVE
      arm64/fpsimd: Sync FPSIMD state with SVE for SME only systems
      arm64/fpsimd: Sync and zero pad FPSIMD state for streaming SVE

 arch/arm64/kernel/fpsimd.c | 7 ++++---
 arch/arm64/kernel/ptrace.c | 8 +++++---
 2 files changed, 9 insertions(+), 6 deletions(-)
---
base-commit: 5d0c230f1de8c7515b6567d9afba1f196fb4e2f4
change-id: 20230802-arm64-fix-ptrace-ssve-no-sve-915863197925

Best regards,

Comments

Catalin Marinas Aug. 4, 2023, 5:31 p.m. UTC | #1

On Thu, 03 Aug 2023 19:33:20 +0100, Mark Brown wrote:
> When we added support for streaming mode SVE there were several missed
> cases around ptrace, address them.  Some could be seen on systems which
> do physically have SVE, others would only impact SME only systems.  The
> Fixes: tag is a bit conservative for the SME only cases but it seems
> like the safest and clearest choice.
> 
> 
> [...]

Applied to arm64 (for-next/fixes), thanks!

[1/3] arm64/ptrace: Don't enable SVE when setting streaming SVE
      https://git.kernel.org/arm64/c/045aecdfcb2e
[2/3] arm64/fpsimd: Sync FPSIMD state with SVE for SME only systems
      https://git.kernel.org/arm64/c/507ea5dd92d2
[3/3] arm64/fpsimd: Sync and zero pad FPSIMD state for streaming SVE
      https://git.kernel.org/arm64/c/69af56ae56a4