From: "Rafael J. Wysocki" <rafael@kernel.org>
To: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: Bjorn Helgaas <helgaas@kernel.org>,
Rajat Jain <rajatja@google.com>,
"Rafael J. Wysocki" <rafael@kernel.org>,
Len Brown <lenb@kernel.org>, Bjorn Helgaas <bhelgaas@google.com>,
ACPI Devel Maling List <linux-acpi@vger.kernel.org>,
Linux PCI <linux-pci@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Rajat Jain <rajatxjain@gmail.com>,
Dmitry Torokhov <dtor@google.com>,
Jesse Barnes <jsbarnes@google.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jean-Philippe Brucker <jean-philippe@linaro.org>,
Pavel Machek <pavel@denx.de>,
"Oliver O'Halloran" <oohall@gmail.com>,
Joerg Roedel <joro@8bytes.org>
Subject: Re: [PATCH] PCI: ACPI: Allow internal devices to be marked as untrusted
Date: Tue, 25 Jan 2022 15:40:01 +0100 [thread overview]
Message-ID: <CAJZ5v0gii3z=DfFbGvubyg=f3t+74eNFdtpJDauwzH4roL-dAQ@mail.gmail.com> (raw)
In-Reply-To: <Ye/X7E2dKb+zem34@lahna>
On Tue, Jan 25, 2022 at 11:59 AM Mika Westerberg
<mika.westerberg@linux.intel.com> wrote:
>
> On Mon, Jan 24, 2022 at 08:27:17AM +0200, Mika Westerberg wrote:
> > > > This patch introduces a new "UntrustedDevice" property that can be used
> > > > by the firmware to mark any device as untrusted.
> >
> > I think this new property should be documented somewhere too (also
> > explain when to use it instead of ExternalFacingPort). If not in the
> > next ACPI spec or some supplemental doc then perhaps in the DT bindings
> > under Documentation/devicetree/bindings.
>
> Actually Microsoft has similar already:
>
> https://docs.microsoft.com/en-us/windows-hardware/drivers/pci/dsd-for-pcie-root-ports#identifying-internal-pcie-ports-accessible-to-users-and-requiring-dma-protection
>
> I think we should use that too here.
Agreed.
This is what the platform firmware will need to use anyway for Windows
compatibility and OEMs may not care about running Linux on their
platforms.
prev parent reply other threads:[~2022-01-25 14:44 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-20 0:04 [PATCH] PCI: ACPI: Allow internal devices to be marked as untrusted Rajat Jain
2022-01-20 2:25 ` Dmitry Torokhov
2022-01-20 15:08 ` Rajat Jain
2022-01-27 23:02 ` Rajat Jain
2022-01-21 21:41 ` Bjorn Helgaas
2022-01-22 14:46 ` Greg Kroah-Hartman
2022-01-24 6:27 ` Mika Westerberg
2022-01-25 10:58 ` Mika Westerberg
2022-01-25 11:15 ` Greg Kroah-Hartman
2022-01-25 12:55 ` Mika Westerberg
2022-01-25 14:45 ` Rafael J. Wysocki
2022-01-27 22:26 ` Rajat Jain
2022-01-28 7:48 ` Mika Westerberg
2022-01-28 21:34 ` Rajat Jain
2022-01-30 14:30 ` Rafael J. Wysocki
2022-01-31 6:41 ` Mika Westerberg
2022-01-31 19:57 ` Rajat Jain
2022-02-02 2:05 ` Rajat Jain
2022-01-28 9:55 ` Jean-Philippe Brucker
2022-01-25 14:40 ` Rafael J. Wysocki [this message]
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