1. 15 Feb, 2018 1 commit
    • Yinghai Lu's avatar
      sparc/PCI: Support arbitrary host bridge address offset · b4a30448
      Yinghai Lu authored
      Add support for arbitrary bus address offset.  Previously we ignored the
      child (PCI) address in the "ranges" property and assumed it was always
      zero.  That means every host bridge window mapped to PCI bus address zero,
      e.g.,
      
        pci_bus 0000:00: root bus resource [mem 0x2000000000000-0x200007fffffff] (bus address [0x00000000-0x7fffffff])
      
      But some systems have host bridge windows with non-zero child addresses, so
      parse the child address and compute the offset between the parent (CPU) and
      child (PCI) addresses.  This allows windows like these:
      
        /pci@305: PCI MEM [mem 0x2000000100000-0x200007effffff] offset 2000000000000
        pci_sun4v f02ae7f8: PCI host bridge to bus 0000:00
        pci_bus 0000:00: root bus resource [mem 0x2000000100000-0x200007effffff] (bus address [0x00100000-0x7effffff])
      
      [bhelgaas: changelog]
      Tested-by: default avatarKhalid Aziz <khalid.aziz@oracle.com>
      Signed-off-by: default avatarYinghai Lu <yinghai@kernel.org>
      Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
      Acked-by: default avatarDavid S. Miller <davem@davemloft.net>
      Cc: sparclinux@vger.kernel.org
      b4a30448
  2. 02 Nov, 2017 1 commit
    • Greg Kroah-Hartman's avatar
      License cleanup: add SPDX GPL-2.0 license identifier to files with no license · b2441318
      Greg Kroah-Hartman authored
      Many source files in the tree are missing licensing information, which
      makes it harder for compliance tools to determine the correct license.
      
      By default all files without license information are under the default
      license of the kernel, which is GPL version 2.
      
      Update the files which contain no license information with the 'GPL-2.0'
      SPDX license identifier.  The SPDX identifier is a legally binding
      shorthand, which can be used instead of the full boiler plate text.
      
      This patch is based on work done by Thomas Gleixner and Kate Stewart and
      Philippe Ombredanne.
      
      How this work was done:
      
      Patches were generated and checked against linux-4.14-rc6 for a subset of
      the use cases:
       - file had no licensing information it it.
       - file was a */uapi/* one with no licensing information in it,
       - file was a */uapi/* one with existing licensing information,
      
      Further patches will be generated in subsequent months to fix up cases
      where non-standard license headers were used, and references to license
      had to be inferred by heuristics based on keywords.
      
      The analysis to determine which SPDX License Identifier to be applied to
      a file was done in a spreadsheet of side by side results from of the
      output of two independent scanners (ScanCode & Windriver) producing SPDX
      tag:value files created by Philippe Ombredanne.  Philippe prepared the
      base worksheet, and did an initial spot review of a few 1000 files.
      
      The 4.13 kernel was the starting point of the analysis with 60,537 files
      assessed.  Kate Stewart did a file by file comparison of the scanner
      results in the spreadsheet to determine which SPDX license identifier(s)
      to be applied to the file. She confirmed any determination that was not
      immediately clear with lawyers working with the Linux Foundation.
      
      Criteria used to select files for SPDX license identifier tagging was:
       - Files considered eligible had to be source code files.
       - Make and config files were included as candidates if they contained >5
         lines of source
       - File already had some variant of a license header in it (even if <5
         lines).
      
      All documentation files were explicitly excluded.
      
      The following heuristics were used to determine which SPDX license
      identifiers to apply.
      
       - when both scanners couldn't find any license traces, file was
         considered to have no license information in it, and the top level
         COPYING file license applied.
      
         For non */uapi/* files that summary was:
      
         SPDX license identifier                            # files
         ---------------------------------------------------|-------
         GPL-2.0                                              11139
      
         and resulted in the first patch in this series.
      
         If that file was a */uapi/* path one, it was "GPL-2.0 WITH
         Linux-syscall-note" otherwise it was "GPL-2.0".  Results of that was:
      
         SPDX license identifier                            # files
         ---------------------------------------------------|-------
         GPL-2.0 WITH Linux-syscall-note                        930
      
         and resulted in the second patch in this series.
      
       - if a file had some form of licensing information in it, and was one
         of the */uapi/* ones, it was denoted with the Linux-syscall-note if
         any GPL family license was found in the file or had no licensing in
         it (per prior point).  Results summary:
      
         SPDX license identifier                            # files
         ---------------------------------------------------|------
         GPL-2.0 WITH Linux-syscall-note                       270
         GPL-2.0+ WITH Linux-syscall-note                      169
         ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
         ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
         LGPL-2.1+ WITH Linux-syscall-note                      15
         GPL-1.0+ WITH Linux-syscall-note                       14
         ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
         LGPL-2.0+ WITH Linux-syscall-note                       4
         LGPL-2.1 WITH Linux-syscall-note                        3
         ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
         ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1
      
         and that resulted in the third patch in this series.
      
       - when the two scanners agreed on the detected license(s), that became
         the concluded license(s).
      
       - when there was disagreement between the two scanners (one detected a
         license but the other didn't, or they both detected different
         licenses) a manual inspection of the file occurred.
      
       - In most cases a manual inspection of the information in the file
         resulted in a clear resolution of the license that should apply (and
         which scanner probably needed to revisit its heuristics).
      
       - When it was not immediately clear, the license identifier was
         confirmed with lawyers working with the Linux Foundation.
      
       - If there was any question as to the appropriate license identifier,
         the file was flagged for further research and to be revisited later
         in time.
      
      In total, over 70 hours of logged manual review was done on the
      spreadsheet to determine the SPDX license identifiers to apply to the
      source files by Kate, Philippe, Thomas and, in some cases, confirmation
      by lawyers working with the Linux Foundation.
      
      Kate also obtained a third independent scan of the 4.13 code base from
      FOSSology, and compared selected files where the other two scanners
      disagreed against that SPDX file, to see if there was new insights.  The
      Windriver scanner is based on an older version of FOSSology in part, so
      they are related.
      
      Thomas did random spot checks in about 500 files from the spreadsheets
      for the uapi headers and agreed with SPDX license identifier in the
      files he inspected. For the non-uapi files Thomas did random spot checks
      in about 15000 files.
      
      In initial set of patches against 4.14-rc6, 3 files were found to have
      copy/paste license identifier errors, and have been fixed to reflect the
      correct identifier.
      
      Additionally Philippe spent 10 hours this week doing a detailed manual
      inspection and review of the 12,461 patched files from the initial patch
      version early this week with:
       - a full scancode scan run, collecting the matched texts, detected
         license ids and scores
       - reviewing anything where there was a license detected (about 500+
         files) to ensure that the applied SPDX license was correct
       - reviewing anything where there was no detection but the patch license
         was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
         SPDX license was correct
      
      This produced a worksheet with 20 files needing minor correction.  This
      worksheet was then exported into 3 different .csv files for the
      different types of files to be modified.
      
      These .csv files were then reviewed by Greg.  Thomas wrote a script to
      parse the csv files and add the proper SPDX tag to the file, in the
      format that the file expected.  This script was further refined by Greg
      based on the output to detect more types of files automatically and to
      distinguish between header and source .c files (which need different
      comment types.)  Finally Greg ran the script using the .csv files to
      generate the patches.
      Reviewed-by: default avatarKate Stewart <kstewart@linuxfoundation.org>
      Reviewed-by: default avatarPhilippe Ombredanne <pombredanne@nexb.com>
      Reviewed-by: default avatarThomas Gleixner <tglx@linutronix.de>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      b2441318
  3. 02 Aug, 2017 2 commits
  4. 20 Apr, 2017 1 commit
  5. 24 Dec, 2016 1 commit
  6. 17 Jun, 2016 1 commit
    • Bjorn Helgaas's avatar
      sparc/PCI: Implement pci_resource_to_user() with pcibios_resource_to_bus() · 3b146b24
      Bjorn Helgaas authored
      "User" addresses are shown in /sys/devices/pci.../.../resource and
      /proc/bus/pci/devices and used as mmap offsets for /proc/bus/pci/BB/DD.F
      files.  On sparc, these are PCI bus addresses, i.e., raw BAR values.
      
      Previously pci_resource_to_user() computed the user address by
      subtracting either pbm->io_space.start or pbm->mem_space.start from the
      resource start.
      
      We've already told the PCI core about those offsets here:
      
        pci_scan_one_pbm()
          pci_add_resource_offset(&resources, &pbm->io_space, pbm->io_space.start);
          pci_add_resource_offset(&resources, &pbm->mem_space, pbm->mem_space.start);
          pci_add_resource_offset(&resources, &pbm->mem64_space, pbm->mem_space.start);
      
      so pcibios_resource_to_bus() knows how to do that translation.
      
      No functional change intended.
      Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
      Acked-by: default avatarYinghai Lu <yinghai@kernel.org>
      3b146b24
  7. 21 Apr, 2016 1 commit
  8. 30 Mar, 2016 1 commit
    • Babu Moger's avatar
      sparc/PCI: Fix for panic while enabling SR-IOV · d0c31e02
      Babu Moger authored
      We noticed this panic while enabling SR-IOV in sparc.
      
      mlx4_core: Mellanox ConnectX core driver v2.2-1 (Jan  1 2015)
      mlx4_core: Initializing 0007:01:00.0
      mlx4_core 0007:01:00.0: Enabling SR-IOV with 5 VFs
      mlx4_core: Initializing 0007:01:00.1
      Unable to handle kernel NULL pointer dereference
      insmod(10010): Oops [#1]
      CPU: 391 PID: 10010 Comm: insmod Not tainted
      		4.1.12-32.el6uek.kdump2.sparc64 #1
      TPC: <dma_supported+0x20/0x80>
      I7: <__mlx4_init_one+0x324/0x500 [mlx4_core]>
      Call Trace:
       [00000000104c5ea4] __mlx4_init_one+0x324/0x500 [mlx4_core]
       [00000000104c613c] mlx4_init_one+0xbc/0x120 [mlx4_core]
       [0000000000725f14] local_pci_probe+0x34/0xa0
       [0000000000726028] pci_call_probe+0xa8/0xe0
       [0000000000726310] pci_device_probe+0x50/0x80
       [000000000079f700] really_probe+0x140/0x420
       [000000000079fa24] driver_probe_device+0x44/0xa0
       [000000000079fb5c] __device_attach+0x3c/0x60
       [000000000079d85c] bus_for_each_drv+0x5c/0xa0
       [000000000079f588] device_attach+0x88/0xc0
       [000000000071acd0] pci_bus_add_device+0x30/0x80
       [0000000000736090] virtfn_add.clone.1+0x210/0x360
       [00000000007364a4] sriov_enable+0x2c4/0x520
       [000000000073672c] pci_enable_sriov+0x2c/0x40
       [00000000104c2d58] mlx4_enable_sriov+0xf8/0x180 [mlx4_core]
       [00000000104c49ac] mlx4_load_one+0x42c/0xd40 [mlx4_core]
      Disabling lock debugging due to kernel taint
      Caller[00000000104c5ea4]: __mlx4_init_one+0x324/0x500 [mlx4_core]
      Caller[00000000104c613c]: mlx4_init_one+0xbc/0x120 [mlx4_core]
      Caller[0000000000725f14]: local_pci_probe+0x34/0xa0
      Caller[0000000000726028]: pci_call_probe+0xa8/0xe0
      Caller[0000000000726310]: pci_device_probe+0x50/0x80
      Caller[000000000079f700]: really_probe+0x140/0x420
      Caller[000000000079fa24]: driver_probe_device+0x44/0xa0
      Caller[000000000079fb5c]: __device_attach+0x3c/0x60
      Caller[000000000079d85c]: bus_for_each_drv+0x5c/0xa0
      Caller[000000000079f588]: device_attach+0x88/0xc0
      Caller[000000000071acd0]: pci_bus_add_device+0x30/0x80
      Caller[0000000000736090]: virtfn_add.clone.1+0x210/0x360
      Caller[00000000007364a4]: sriov_enable+0x2c4/0x520
      Caller[000000000073672c]: pci_enable_sriov+0x2c/0x40
      Caller[00000000104c2d58]: mlx4_enable_sriov+0xf8/0x180 [mlx4_core]
      Caller[00000000104c49ac]: mlx4_load_one+0x42c/0xd40 [mlx4_core]
      Caller[00000000104c5f90]: __mlx4_init_one+0x410/0x500 [mlx4_core]
      Caller[00000000104c613c]: mlx4_init_one+0xbc/0x120 [mlx4_core]
      Caller[0000000000725f14]: local_pci_probe+0x34/0xa0
      Caller[0000000000726028]: pci_call_probe+0xa8/0xe0
      Caller[0000000000726310]: pci_device_probe+0x50/0x80
      Caller[000000000079f700]: really_probe+0x140/0x420
      Caller[000000000079fa24]: driver_probe_device+0x44/0xa0
      Caller[000000000079fb08]: __driver_attach+0x88/0xa0
      Caller[000000000079d90c]: bus_for_each_dev+0x6c/0xa0
      Caller[000000000079f29c]: driver_attach+0x1c/0x40
      Caller[000000000079e35c]: bus_add_driver+0x17c/0x220
      Caller[00000000007a02d4]: driver_register+0x74/0x120
      Caller[00000000007263fc]: __pci_register_driver+0x3c/0x60
      Caller[00000000104f62bc]: mlx4_init+0x60/0xcc [mlx4_core]
      Kernel panic - not syncing: Fatal exception
      Press Stop-A (L1-A) to return to the boot prom
      ---[ end Kernel panic - not syncing: Fatal exception
      
      Details:
      Here is the call sequence
      virtfn_add->__mlx4_init_one->dma_set_mask->dma_supported
      
      The panic happened at line 760(file arch/sparc/kernel/iommu.c)
      
      758 int dma_supported(struct device *dev, u64 device_mask)
      759 {
      760         struct iommu *iommu = dev->archdata.iommu;
      761         u64 dma_addr_mask = iommu->dma_addr_mask;
      762
      763         if (device_mask >= (1UL << 32UL))
      764                 return 0;
      765
      766         if ((device_mask & dma_addr_mask) == dma_addr_mask)
      767                 return 1;
      768
      769 #ifdef CONFIG_PCI
      770         if (dev_is_pci(dev))
      771		return pci64_dma_supported(to_pci_dev(dev), device_mask);
      772 #endif
      773
      774         return 0;
      775 }
      776 EXPORT_SYMBOL(dma_supported);
      
      Same panic happened with Intel ixgbe driver also.
      
      SR-IOV code looks for arch specific data while enabling
      VFs. When VF device is added, driver probe function makes set
      of calls to initialize the pci device. Because the VF device is
      added different way than the normal PF device(which happens via
      of_create_pci_dev for sparc), some of the arch specific initialization
      does not happen for VF device.  That causes panic when archdata is
      accessed.
      
      To fix this, I have used already defined weak function
      pcibios_setup_device to copy archdata from PF to VF.
      Also verified the fix.
      Signed-off-by: default avatarBabu Moger <babu.moger@oracle.com>
      Signed-off-by: default avatarSowmini Varadhan <sowmini.varadhan@oracle.com>
      Reviewed-by: default avatarEthan Zhao <ethan.zhao@oracle.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      d0c31e02
  9. 29 Oct, 2015 1 commit
    • Yinghai Lu's avatar
      sparc/PCI: Add mem64 resource parsing for root bus · af86fa40
      Yinghai Lu authored
      David reported that a T5-8 sparc system failed to boot with:
      
        pci_sun4v f02dbcfc: PCI host bridge to bus 0000:00
        pci_bus 0000:00: root bus resource [io  0x804000000000-0x80400fffffff] (bus address [0x0000-0xfffffff])
        pci_bus 0000:00: root bus resource [mem 0x800000000000-0x80007effffff] (bus address [0x00000000-0x7effffff])
        pci 0000:00:01.0: can't claim BAR 15 [mem 0x100000000-0x4afffffff pref]: no compatible bridge window
      
      Note that we don't know about a host bridge aperture that contains
      BAR 15.  OF does report a MEM64 aperture, but before this patch,
      pci_determine_mem_io_space() ignored it.
      
      Add support for host bridge apertures with 64-bit PCI addresses.  Also
      set IORESOURCE_MEM_64 for PCI device and bridge resources in PCI 64-bit
      memory space.
      
      Sparc doesn't actually print the device and bridge resources, but after
      this patch, we should have the equivalent of this:
      
        pci_sun4v f02dbcfc: PCI host bridge to bus 0000:00
        pci_bus 0000:00: root bus resource [io  0x804000000000-0x80400fffffff] (bus address [0x0000-0xfffffff])
        pci_bus 0000:00: root bus resource [mem 0x800000000000-0x80007effffff] (bus address [0x00000000-0x7effffff])
        pci_bus 0000:00: root bus resource [mem 0x800100000000-0x8007ffffffff] (bus address [0x100000000-0x7ffffffff])
        pci 0000:00:01.0:   bridge window [mem 0x800100000000-0x8004afffffff 64bit pref]
      
      [bhelgaas: changelog, URL to David's report]
      Fixes: d63e2e1f ("sparc/PCI: Clip bridge windows to fit in upstream windows")
      Link: http://lkml.kernel.org/r/5514391F.2030300@oracle.comReported-by: default avatarDavid Ahern <david.ahern@oracle.com>
      Tested-by: default avatarDavid Ahern <david.ahern@oracle.com>
      Tested-by: default avatarKhalid Aziz <khalid.aziz@oracle.com>
      Signed-off-by: default avatarYinghai Lu <yinghai@kernel.org>
      Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
      af86fa40
  10. 11 Aug, 2015 1 commit
    • Dan Williams's avatar
      cleanup IORESOURCE_CACHEABLE vs ioremap() · 92b19ff5
      Dan Williams authored
      Quoting Arnd:
          I was thinking the opposite approach and basically removing all uses
          of IORESOURCE_CACHEABLE from the kernel. There are only a handful of
          them.and we can probably replace them all with hardcoded
          ioremap_cached() calls in the cases they are actually useful.
      
      All existing usages of IORESOURCE_CACHEABLE call ioremap() instead of
      ioremap_nocache() if the resource is cacheable, however ioremap() is
      uncached by default. Clearly none of the existing usages care about the
      cacheability. Particularly devm_ioremap_resource() never worked as
      advertised since it always fell back to plain ioremap().
      
      Clean this up as the new direction we want is to convert
      ioremap_<type>() usages to memremap(..., flags).
      Suggested-by: default avatarArnd Bergmann <arnd@arndb.de>
      Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
      Signed-off-by: default avatarDan Williams <dan.j.williams@intel.com>
      92b19ff5
  11. 30 Jul, 2015 1 commit
  12. 22 Jul, 2015 1 commit
  13. 01 Jun, 2015 1 commit
  14. 08 Apr, 2015 1 commit
  15. 19 Mar, 2015 1 commit
  16. 16 Jan, 2015 1 commit
  17. 14 Aug, 2014 3 commits
  18. 27 May, 2014 1 commit
  19. 19 May, 2014 1 commit
  20. 29 Jan, 2014 1 commit
    • Paul Gortmaker's avatar
      sparc: don't use module_init in non-modular pci.c code · 1b925b57
      Paul Gortmaker authored
      The pci.o is built for SPARC64_PCI -- which is bool, and hence
      this code is either present or absent.  It will never be modular,
      so using module_init as an alias for __initcall can be somewhat
      misleading.
      
      Fix this up now, so that we can relocate module_init from
      init.h into module.h in the future.  If we don't do this, we'd
      have to add module.h to obviously non-modular code, and that
      would be a worse thing.
      
      Note that direct use of __initcall is discouraged, vs. one
      of the priority categorized subgroups.  As __initcall gets
      mapped onto device_initcall, our use of device_initcall
      directly in this change means that the runtime impact is
      zero -- it will remain at level 6 in initcall ordering.
      Signed-off-by: default avatarPaul Gortmaker <paul.gortmaker@windriver.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      1b925b57
  21. 21 Dec, 2013 1 commit
    • Yinghai Lu's avatar
      PCI: Convert pcibios_resource_to_bus() to take a pci_bus, not a pci_dev · fc279850
      Yinghai Lu authored
      These interfaces:
      
        pcibios_resource_to_bus(struct pci_dev *dev, *bus_region, *resource)
        pcibios_bus_to_resource(struct pci_dev *dev, *resource, *bus_region)
      
      took a pci_dev, but they really depend only on the pci_bus.  And we want to
      use them in resource allocation paths where we have the bus but not a
      device, so this patch converts them to take the pci_bus instead of the
      pci_dev:
      
        pcibios_resource_to_bus(struct pci_bus *bus, *bus_region, *resource)
        pcibios_bus_to_resource(struct pci_bus *bus, *resource, *bus_region)
      
      In fact, with standard PCI-PCI bridges, they only depend on the host
      bridge, because that's the only place address translation occurs, but
      we aren't going that far yet.
      
      [bhelgaas: changelog]
      Signed-off-by: default avatarYinghai Lu <yinghai@kernel.org>
      Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
      fc279850
  22. 14 Nov, 2013 1 commit
  23. 29 Jun, 2013 1 commit
  24. 05 Jun, 2013 1 commit
    • Gu Zheng's avatar
      PCI: Convert alloc_pci_dev(void) to pci_alloc_dev(bus) · 8b1fce04
      Gu Zheng authored
      Use the new pci_alloc_dev(bus) to replace the existing using of
      alloc_pci_dev(void).
      
      [bhelgaas: drop pci_bus ref later in pci_release_dev()]
      Signed-off-by: default avatarGu Zheng <guz.fnst@cn.fujitsu.com>
      Signed-off-by: default avatarJiang Liu <jiang.liu@huawei.com>
      Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: "David S. Miller" <davem@davemloft.net>
      Cc: David Airlie <airlied@linux.ie>
      Cc: Neela Syam Kolli <megaraidlinux@lsi.com>
      Cc: "James E.J. Bottomley" <JBottomley@parallels.com>
      Cc: Yinghai Lu <yinghai@kernel.org>
      Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      8b1fce04
  25. 20 May, 2013 1 commit
  26. 12 Jan, 2013 1 commit
  27. 03 Jan, 2013 1 commit
    • Greg Kroah-Hartman's avatar
      SPARC: drivers: remove __dev* attributes. · 7c9503b8
      Greg Kroah-Hartman authored
      CONFIG_HOTPLUG is going away as an option.  As a result, the __dev*
      markings need to be removed.
      
      This change removes the use of __devinit, __devexit_p, __devinitdata,
      and __devexit from these drivers.
      
      Based on patches originally written by Bill Pemberton, but redone by me
      in order to handle some of the coding style issues better, by hand.
      
      Cc: Bill Pemberton <wfp5p@virginia.edu>
      Cc: "David S. Miller" <davem@davemloft.net>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      7c9503b8
  28. 09 Oct, 2012 1 commit
    • Konstantin Khlebnikov's avatar
      mm: kill vma flag VM_RESERVED and mm->reserved_vm counter · 314e51b9
      Konstantin Khlebnikov authored
      A long time ago, in v2.4, VM_RESERVED kept swapout process off VMA,
      currently it lost original meaning but still has some effects:
      
       | effect                 | alternative flags
      -+------------------------+---------------------------------------------
      1| account as reserved_vm | VM_IO
      2| skip in core dump      | VM_IO, VM_DONTDUMP
      3| do not merge or expand | VM_IO, VM_DONTEXPAND, VM_HUGETLB, VM_PFNMAP
      4| do not mlock           | VM_IO, VM_DONTEXPAND, VM_HUGETLB, VM_PFNMAP
      
      This patch removes reserved_vm counter from mm_struct.  Seems like nobody
      cares about it, it does not exported into userspace directly, it only
      reduces total_vm showed in proc.
      
      Thus VM_RESERVED can be replaced with VM_IO or pair VM_DONTEXPAND | VM_DONTDUMP.
      
      remap_pfn_range() and io_remap_pfn_range() set VM_IO|VM_DONTEXPAND|VM_DONTDUMP.
      remap_vmalloc_range() set VM_DONTEXPAND | VM_DONTDUMP.
      
      [akpm@linux-foundation.org: drivers/vfio/pci/vfio_pci.c fixup]
      Signed-off-by: default avatarKonstantin Khlebnikov <khlebnikov@openvz.org>
      Cc: Alexander Viro <viro@zeniv.linux.org.uk>
      Cc: Carsten Otte <cotte@de.ibm.com>
      Cc: Chris Metcalf <cmetcalf@tilera.com>
      Cc: Cyrill Gorcunov <gorcunov@openvz.org>
      Cc: Eric Paris <eparis@redhat.com>
      Cc: H. Peter Anvin <hpa@zytor.com>
      Cc: Hugh Dickins <hughd@google.com>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: James Morris <james.l.morris@oracle.com>
      Cc: Jason Baron <jbaron@redhat.com>
      Cc: Kentaro Takeda <takedakn@nttdata.co.jp>
      Cc: Matt Helsley <matthltc@us.ibm.com>
      Cc: Nick Piggin <npiggin@kernel.dk>
      Cc: Oleg Nesterov <oleg@redhat.com>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Robert Richter <robert.richter@amd.com>
      Cc: Suresh Siddha <suresh.b.siddha@intel.com>
      Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
      Cc: Venkatesh Pallipadi <venki@google.com>
      Acked-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      314e51b9
  29. 18 Sep, 2012 1 commit
  30. 10 Jul, 2012 1 commit
  31. 05 Jul, 2012 1 commit
  32. 13 Jun, 2012 2 commits
  33. 20 Mar, 2012 1 commit
    • Bjorn Helgaas's avatar
      sparc/PCI: convert devtree and arch-probed bus addresses to resource · a031589b
      Bjorn Helgaas authored
      Normal PCI enumeration via PCI config space uses __pci_read_base(), where
      the PCI core applies any bus-to-resource offset.  But sparc sometimes
      reads PCI config space itself, and sometimes it gets addresses from the
      device tree.
      
      In ac1edcc5, I converted sparc to use the PCI core bus-to-resource
      conversion, but I missed these sparc-specific paths.  I don't have a way
      to test it, but I think sparc is broken between that commit and this one.
      
      This patch replaces the sparc-specific pci_resource_adjust() with the
      generic pcibios_bus_to_resource() in the following paths:
      
          pci_cfg_fake_ranges()       (addresses read from PCI config)
          apb_fake_ranges()           (addresses computed based on PCI config)
          of_scan_pci_bridge()        (addresses from OF "ranges" property)
      
      N.B.: Resources of non-P2P bridge devices are set in pci_parse_of_addrs()
      and, as far as I can see, never converted to CPU addresses.  I do not
      understand why these would be treated differently than bridge windows.
      
      CC: "David S. Miller" <davem@davemloft.net>
      CC: sparclinux@vger.kernel.org
      Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
      Signed-off-by: default avatarJesse Barnes <jbarnes@virtuousgeek.org>
      a031589b
  34. 24 Feb, 2012 1 commit
    • Bjorn Helgaas's avatar
      sparc/PCI: get rid of device resource fixups · ac1edcc5
      Bjorn Helgaas authored
      Tell the PCI core about host bridge address translation so it can take
      care of bus-to-resource conversion for us.
      
      N.B. Leon apparently never uses initial BAR values, so it didn't matter
      that we never fixed up the I/O resources from bus address to CPU addresses.
      
      Other sparc uses pci_of_scan_bus(), which sets device resources directly
      to CPU addresses, not bus addresses, so it didn't need pcibios_fixup_bus()
      either.  But by telling the core about the offsets, we can nuke
      pcibios_resource_to_bus().
      
      CC: "David S. Miller" <davem@davemloft.net>
      CC: sparclinux@vger.kernel.org
      Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
      ac1edcc5
  35. 06 Jan, 2012 2 commits