linux-kernel - Re: [PATCH] iommu/arm-smmu-v3: Stop pre-zeroing batch commands in arm_smmu_atc_inv

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Message-Id: <163334645081.1581475.7922976720083700299.b4-ty@kernel.org>
Date:   Mon,  4 Oct 2021 13:05:35 +0100
From:   Will Deacon <will@...nel.org>
To:     linux-kernel@...r.kernel.org, Robin Murphy <robin.murphy@....com>,
        Joerg Roedel <joro@...tes.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        Zhen Lei <thunder.leizhen@...wei.com>,
        iommu <iommu@...ts.linux-foundation.org>
Cc:     catalin.marinas@....com, kernel-team@...roid.com,
        Will Deacon <will@...nel.org>,
        John Garry <john.garry@...wei.com>
Subject: Re: [PATCH] iommu/arm-smmu-v3: Stop pre-zeroing batch commands in arm_smmu_atc_inv_master()

On Tue, 17 Aug 2021 19:34:11 +0800, Zhen Lei wrote:
> Pre-zeroing the batched commands structure is inefficient, as individual
> commands are zeroed later in arm_smmu_cmdq_build_cmd(). Therefore, only
> the member 'num' needs to be initialized to 0.
> 
> 

Applied to will (for-joerg/arm-smmu/updates), thanks!

[1/1] iommu/arm-smmu-v3: Stop pre-zeroing batch commands in arm_smmu_atc_inv_master()
      https://git.kernel.org/will/c/93f9f7958f12

Cheers,
-- 
Will

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