linux-kernel - Re: [PATCH 1/1] iommu/arm-smmu-v3: Decrease the queue size of evtq and priq

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: <162314747848.3711241.13281936770478633279.b4-ty@kernel.org>
Date:   Tue,  8 Jun 2021 12:42:37 +0100
From:   Will Deacon <will@...nel.org>
To:     linux-kernel <linux-kernel@...r.kernel.org>,
        iommu <iommu@...ts.linux-foundation.org>,
        Robin Murphy <robin.murphy@....com>,
        Zhen Lei <thunder.leizhen@...wei.com>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        Joerg Roedel <joro@...tes.org>
Cc:     catalin.marinas@....com, kernel-team@...roid.com,
        Will Deacon <will@...nel.org>
Subject: Re: [PATCH 1/1] iommu/arm-smmu-v3: Decrease the queue size of evtq and priq

On Mon, 31 May 2021 20:35:53 +0800, Zhen Lei wrote:
> Commit d25f6ead162e ("iommu/arm-smmu-v3: Increase maximum size of queues")
> expands the cmdq queue size to improve the success rate of concurrent
> command queue space allocation by multiple cores. However, this extension
> does not apply to evtq and priq, because for both of them, the SMMU driver
> is the consumer. Instead, memory resources are wasted. Therefore, the
> queue size of evtq and priq is restored to the original setting, one page.

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

[1/1] iommu/arm-smmu-v3: Decrease the queue size of evtq and priq
      https://git.kernel.org/will/c/f115f3c0d5d8

Cheers,
-- 
Will

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