linux-kernel - [PATCH v2 0/7] Tighten PCI security, expose dev location in sysfs

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Message-Id: <20200630044943.3425049-1-rajatja@google.com>
Date:   Mon, 29 Jun 2020 21:49:36 -0700
From:   Rajat Jain <rajatja@...gle.com>
To:     David Woodhouse <dwmw2@...radead.org>,
        Lu Baolu <baolu.lu@...ux.intel.com>,
        Joerg Roedel <joro@...tes.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Len Brown <lenb@...nel.org>, iommu@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
        linux-acpi@...r.kernel.org, Raj Ashok <ashok.raj@...el.com>,
        lalithambika.krishnakumar@...el.com,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Jean-Philippe Brucker <jean-philippe@...aro.org>,
        Prashant Malani <pmalani@...gle.com>,
        Benson Leung <bleung@...gle.com>,
        Todd Broch <tbroch@...gle.com>,
        Alex Levin <levinale@...gle.com>,
        Mattias Nissler <mnissler@...gle.com>,
        Rajat Jain <rajatxjain@...il.com>,
        Bernie Keany <bernie.keany@...el.com>,
        Aaron Durbin <adurbin@...gle.com>,
        Diego Rivas <diegorivas@...gle.com>,
        Duncan Laurie <dlaurie@...gle.com>,
        Furquan Shaikh <furquan@...gle.com>,
        Jesse Barnes <jsbarnes@...gle.com>,
        Christian Kellner <christian@...lner.me>,
        Alex Williamson <alex.williamson@...hat.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        oohall@...il.com, Saravana Kannan <saravanak@...gle.com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Arnd Bergmann <arnd@...db.de>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Cc:     Rajat Jain <rajatja@...gle.com>
Subject: [PATCH v2 0/7] Tighten PCI security, expose dev location in sysfs

This is a set of loosely related patches most of whom emerged out of
discussion in the following threads. In a nutshell the goal was to allow
an administrator to specify which driver he wants to allow on external
ports, and a strategy was chalked out:
https://lore.kernel.org/linux-pci/20200609210400.GA1461839@bjorn-Precision-5520/
https://lore.kernel.org/linux-pci/20200618184621.GA446639@kroah.com/
https://lore.kernel.org/linux-pci/20200627050225.GA226238@kroah.com/

* The first 3 patches tighten the PCI security using ACS, and take care
  of a border case.
* The 4th patch takes care of PCI bug.
* 5th and 6th patches expose a device's location into the sysfs to allow
  admin to make decision based on that.
* 7th patch is to ensure that the external devices don't bind to drivers
  during boot.

Rajat Jain (7):
  PCI: Keep the ACS capability offset in device
  PCI: Set "untrusted" flag for truly external devices only
  PCI/ACS: Enable PCI_ACS_TB for untrusted/external-facing devices
  PCI: Add device even if driver attach failed
  driver core: Add device location to "struct device" and expose it in
    sysfs
  PCI: Move pci_dev->untrusted logic to use device location instead
  PCI: Add parameter to disable attaching external devices

 drivers/base/core.c         | 35 +++++++++++++++++++++++++++++++
 drivers/iommu/intel/iommu.c | 31 ++++++++++++++++++---------
 drivers/pci/ats.c           |  2 +-
 drivers/pci/bus.c           | 13 ++++++------
 drivers/pci/of.c            |  2 +-
 drivers/pci/p2pdma.c        |  2 +-
 drivers/pci/pci-acpi.c      | 13 ++++++------
 drivers/pci/pci-driver.c    |  1 +
 drivers/pci/pci.c           | 34 ++++++++++++++++++++++++++----
 drivers/pci/pci.h           |  3 ++-
 drivers/pci/probe.c         | 20 +++++++++++-------
 drivers/pci/quirks.c        | 19 +++++++++++++----
 include/linux/device.h      | 42 +++++++++++++++++++++++++++++++++++++
 include/linux/device/bus.h  |  8 +++++++
 include/linux/pci.h         | 13 ++++++------
 15 files changed, 191 insertions(+), 47 deletions(-)

-- 
2.27.0.212.ge8ba1cc988-goog