linux-kernel - [PATCH 00/17] PCI resource mmap cleanup

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <cover.1490188942.git.dwmw2@infradead.org>
Date:   Wed, 22 Mar 2017 13:25:14 +0000
From:   David Woodhouse <dwmw2@...radead.org>
To:     linux-pci@...r.kernel.org, linux-arch@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 00/17] PCI resource mmap cleanup

This started out as a fairly trivial "add pci_mmap_page_range() for 
ARM64" patch. But pci_mmap_page_range() is a vile interface, taking 
"user visible" resource addresses converted with pci_resource_to_user() 
on those platforms unlucky enough to use that... and even in the *sane* 
sysfs-based mmap method, we convert through user addresses to call the
platform-specific method.

In most cases there's just no need for any of this crap. We can migrate
most architectures to a generic implementation without much thought,
and the few that aren't converted in this series can probably be added
fairly easily too but need a little more arch-specific attention.

Utterly untested for now; I'll do some testing while I deal with the
inevitable bikeshedding.

David Woodhouse (17):
  pci: Fix pci_mmap_fits() for HAVE_PCI_RESOURCE_TO_USER platforms
  pci: Fix another sanity check bug in /proc/pci mmap
  pci: Only allow WC mmap on prefetchable resources
  pci: Add arch_can_pci_mmap_wc() macro
  pci: Move multiple declarations of pci_mmap_page_range() to <linux/pci.h>
  pci: Add HAVE_PCI_MMAP_IO to architectures which can mmap() I/O space
  pci: Use BAR index in sysfs attr->private instead of resource pointer
  pci: Add BAR index argument to pci_mmap_page_range()
  pci: Add pci_mmap_resource_range() and use it for ARM64
  arm: Use generic pci_mmap_resource_range()
  cris: Use generic pci_mmap_resource_range()
  mips: Use generic pci_mmap_resource_range()
  mn10300: Use generic pci_mmap_resource_range()
  parisc: Use generic pci_mmap_resource_range()
  sh: Use generic pci_mmap_resource_range()
  unicore: Use generic pci_mmap_resource_range()
  arm64: Do not expose PCI mmap through procfs

 Documentation/filesystems/sysfs-pci.txt |  9 +++-
 arch/arm/include/asm/pci.h              |  3 +-
 arch/arm/kernel/bios32.c                | 19 -------
 arch/arm64/include/asm/pci.h            |  3 ++
 arch/cris/arch-v32/drivers/pci/bios.c   | 22 --------
 arch/cris/include/asm/pci.h             |  4 +-
 arch/ia64/include/asm/pci.h             |  4 +-
 arch/ia64/pci/pci.c                     |  3 +-
 arch/microblaze/include/asm/pci.h       |  6 +--
 arch/microblaze/pci/pci-common.c        |  2 +-
 arch/mips/include/asm/pci.h             |  5 +-
 arch/mips/pci/pci.c                     | 24 ---------
 arch/mn10300/include/asm/pci.h          |  4 +-
 arch/mn10300/unit-asb2305/pci-asb2305.c | 23 ---------
 arch/parisc/include/asm/pci.h           |  4 +-
 arch/parisc/kernel/pci.c                | 28 ----------
 arch/powerpc/include/asm/pci.h          |  9 ++--
 arch/powerpc/kernel/pci-common.c        |  3 +-
 arch/sh/drivers/pci/pci.c               | 21 --------
 arch/sh/include/asm/pci.h               |  4 +-
 arch/sparc/include/asm/pci_64.h         |  5 +-
 arch/sparc/kernel/pci.c                 |  6 +--
 arch/unicore32/include/asm/pci.h        |  3 +-
 arch/unicore32/kernel/pci.c             | 23 ---------
 arch/x86/include/asm/pci.h              |  6 +--
 arch/x86/pci/i386.c                     |  3 +-
 arch/xtensa/include/asm/pci.h           | 11 ++--
 arch/xtensa/kernel/pci.c                |  5 +-
 drivers/pci/Makefile                    |  2 +-
 drivers/pci/mmap.c                      | 90 +++++++++++++++++++++++++++++++++
 drivers/pci/pci-sysfs.c                 | 77 +++++++++++++---------------
 drivers/pci/proc.c                      | 55 ++++++++++++++------
 include/linux/pci.h                     | 19 +++++++
 33 files changed, 233 insertions(+), 272 deletions(-)
 create mode 100644 drivers/pci/mmap.c

-- 
2.9.3