linux-kernel - Re: [PATCH v4] iommu: Optimise PCI SAC address trick

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Message-ID: <20230613105850.30172085@kernel.org>
Date:   Tue, 13 Jun 2023 10:58:50 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Joerg Roedel <joro@...tes.org>
Cc:     Robin Murphy <robin.murphy@....com>, will@...nel.org,
        iommu@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        John Garry <john.g.garry@...cle.com>
Subject: Re: [PATCH v4] iommu: Optimise PCI SAC address trick

On Fri, 14 Apr 2023 13:45:34 +0200 Joerg Roedel wrote:
> Thanks for working on this, I think this is good to go. But given the
> issues we had with last attempt I'd like to have this in linux-next for
> a few weeks before sending it upstream. Therefore I will defer this
> patch and merge it early in the next cycle.

Is this patch queued up? I don't see it in linux-next and we keep
hitting this issue in production. After a few NIC reconfigurations
IOMMU starts consuming 90+% of CPU time.