linux-kernel - Re: [PATCH] arm64: dts: qcom: sm8650: set ufs as dma coherent

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <176160465206.73268.9315499672676137244.b4-ty@kernel.org>
Date: Mon, 27 Oct 2025 17:37:16 -0500
From: Bjorn Andersson <andersson@...nel.org>
To: Konrad Dybcio <konradybcio@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Neil Armstrong <neil.armstrong@...aro.org>
Cc: linux-arm-msm@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64: dts: qcom: sm8650: set ufs as dma coherent


On Tue, 07 Oct 2025 20:53:44 +0200, Neil Armstrong wrote:
> The UFS device is ovbiously dma coherent like the other IOMMU devices
> like usb, mmc, ... let's fix this by adding the flag.
> 
> To be sure an extensive test has been performed to be sure it's
> safe, as downstream uses this flag for UFS as well.
> 
> As an experiment, I checked how the dma-coherent could impact
> the UFS bandwidth, and it happens the max bandwidth on cached
> write is slighly highter (up to 10%) while using less cpu time
> since cache sync/flush is skipped.
> 
> [...]

Applied, thanks!

[1/1] arm64: dts: qcom: sm8650: set ufs as dma coherent
      commit: c2703c90161b45bca5b65f362adbae02ed71fcc1

Best regards,
-- 
Bjorn Andersson <andersson@...nel.org>