linux-kernel - Re: [PATCH v4 1/2] PCI: Rename "pci_dev->untrusted" to "pci_dev->poses_dma

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Date:   Tue, 22 Mar 2022 12:11:54 +0100
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Christoph Hellwig <hch@...radead.org>
Cc:     Rajat Jain <rajatja@...gle.com>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Len Brown <lenb@...nel.org>,
        Linux PCI <linux-pci@...r.kernel.org>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Bjorn Helgaas <helgaas@...nel.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Rajat Jain <rajatxjain@...il.com>,
        Dmitry Torokhov <dtor@...gle.com>,
        Jesse Barnes <jsbarnes@...gle.com>,
        Jean-Philippe Brucker <jean-philippe@...aro.org>,
        Pavel Machek <pavel@...x.de>,
        "Oliver O'Halloran" <oohall@...il.com>,
        Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
        David Woodhouse <dwmw2@...radead.org>,
        Lu Baolu <baolu.lu@...ux.intel.com>,
        "open list:AMD IOMMU (AMD-VI)" <iommu@...ts.linux-foundation.org>
Subject: Re: [PATCH v4 1/2] PCI: Rename "pci_dev->untrusted" to "pci_dev->poses_dma_risk"

On Tue, Mar 22, 2022 at 10:02 AM Christoph Hellwig <hch@...radead.org> wrote:
>
> On Sat, Mar 19, 2022 at 11:29:05PM -0700, Rajat Jain wrote:
> > Rename the field to make it more clear, that the device can execute DMA
> > attacks on the system, and thus the system may need protection from
> > such attacks from this device.
> >
> > No functional change intended.
> >
> > Signed-off-by: Rajat Jain <rajatja@...gle.com>
> > ---
> > v4: Initial version, created based on comments on other patch
>
> What a horrible name.  Why not untrusted_dma which captures the
> intent much better?

FWIW, I like this one much better too.