linux-kernel - Re: [PATCH v5 0/3] SMMU v3 CMDQ fix and improvement

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Message-ID: <176764512514.1439618.10919808867972292538.b4-ty@kernel.org>
Date: Mon,  5 Jan 2026 22:58:23 +0000
From: Will Deacon <will@...nel.org>
To: linux-kernel@...r.kernel.org,
	iommu@...ts.linux.dev,
	Joerg Roedel <joro@...tes.org>,
	Mostafa Saleh <smostafa@...gle.com>,
	Robin Murphy <robin.murphy@....com>,
	Nicolin Chen <nicolinc@...dia.com>,
	Jason Gunthorpe <jgg@...pe.ca>,
	Jacob Pan <jacob.pan@...ux.microsoft.com>
Cc: catalin.marinas@....com,
	kernel-team@...roid.com,
	Will Deacon <will@...nel.org>,
	Zhang Yu <zhangyu1@...ux.microsoft.com>,
	Alexander Grest <Alexander.Grest@...rosoft.com>,
	Jean-Philippe Brucker <jpb@...nel.org>
Subject: Re: [PATCH v5 0/3] SMMU v3 CMDQ fix and improvement

On Mon, 08 Dec 2025 13:28:54 -0800, Jacob Pan wrote:
> These two patches address logic issues that occur when SMMU CMDQ spaces
> are nearly exhausted at runtime. The problems become more pronounced
> when multiple CPUs submit to a single queue, a common scenario under SVA
> when shared buffers (used by both CPU and device) are being unmapped.
> 
> 
> Thanks,
> 
> [...]

Applied third patch to iommu (arm/smmu/updates), thanks!

[3/3] iommu/arm-smmu-v3: Improve CMDQ lock fairness and efficiency
      https://git.kernel.org/iommu/c/df180b1a4cc5

Cheers,
-- 
Will

https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev