linux-kernel - Re: [PATCH] amd/iommu: fix logic bug in amd_iommu_report_page

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Date:   Mon, 2 Aug 2021 17:26:57 +0200
From:   Luigi Rizzo <lrizzo@...gle.com>
To:     Joerg Roedel <joro@...tes.org>
Cc:     Will Deacon <will@...nel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        David Rientjes <rientjes@...gle.com>,
        Luigi Rizzo <rizzo.unipi@...il.com>,
        Suravee Suthikulpanit <suravee.suthikulpanit@....com>
Subject: Re: [PATCH] amd/iommu: fix logic bug in amd_iommu_report_page_fault()

On Mon, Aug 2, 2021 at 4:39 PM Joerg Roedel <joro@...tes.org> wrote:
>
> On Mon, Aug 02, 2021 at 04:30:50PM +0200, Luigi Rizzo wrote:
> > Ah didn't realize that. Thank you!
> >
> > Two questions on the topic:
> > 1. how comes only the AMD driver is so verbose in reporting io page faults?
> >    Neither intel nor other iommu drivers seem to log anything
>
> What do you mean by 'verbose'? It is only a line per fault, and at least
> the Intel driver also logs DMAR faults with one line per fault :)

Ah never mind, I was grep'ing keywords from the amd message and
there is almost zero overlap!

thanks
luigi