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

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Message-ID: <d7f707a9-945a-bee5-2de7-dd1ff09a79e2@oracle.com>
Date:   Mon, 17 Jul 2023 10:24:35 +0100
From:   John Garry <john.g.garry@...cle.com>
To:     Joerg Roedel <joro@...tes.org>, Robin Murphy <robin.murphy@....com>
Cc:     will@...nel.org, iommu@...ts.linux.dev,
        linux-kernel@...r.kernel.org,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Jakub Kicinski <kuba@...nel.org>
Subject: Re: [PATCH v4] iommu: Optimise PCI SAC address trick

On 14/07/2023 15:09, Joerg Roedel wrote:
> On Thu, Apr 13, 2023 at 02:40:25PM +0100, Robin Murphy wrote:
>> To that end, implement a flag to refine the SAC business into a
>> per-device policy that can automatically get itself out of the way if
>> and when it stops being useful.
> It is summer time and it may be the heat, but I am in a brave mood and
> decided to give this a shoot. I applied it to the core branch and will
> push it to linux-next for testing.

Cool.

@Robin, I think that you sent an incremental change to this original 
patch in this same thread. The issue which it solved was that we saw 
dev_notice() logs many times. I glanced at linux-next and Joerg does not 
seem to have included that.

Thanks,
John