[GIT PULL] PCI fixes for v4.5

[GIT PULL] PCI fixes for v4.5

[Bjorn Helgaas]

Hi Linus,

Here are a couple more fixes for v4.5.  These only affect the Layerscape
and Keystone host controllers, and they fix system crashes and hangs.

Bjorn


The following changes since commit 61d9e854dfb91b46b99ffd3d31fc7d45d2b95f31:

  PCI: mvebu: Restrict build to 32-bit ARM (2016-02-27 08:52:20 -0600)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git tags/pci-v4.5-fixes-4

for you to fetch changes up to 1195c103f6c98d9ff381cac3a8760d4f8a133627:

  PCI: layerscape: Fix MSG TLP drop setting (2016-02-29 17:24:15 -0600)

----------------------------------------------------------------
PCI updates for v4.5:

  Freescale Layerscape host bridge driver
    Fix MSG TLP drop setting (Minghuan Lian)

  TI Keystone host bridge driver
    Fix MSI code that retrieves struct pcie_port pointer (Murali Karicheri)

----------------------------------------------------------------
Minghuan Lian (1):
      PCI: layerscape: Fix MSG TLP drop setting

Murali Karicheri (1):
      PCI: keystone: Fix MSI code that retrieves struct pcie_port pointer

 drivers/pci/host/pci-keystone-dw.c | 11 +++--------
 drivers/pci/host/pci-layerscape.c  | 21 +++++++++++++--------
 2 files changed, 16 insertions(+), 16 deletions(-)

[GIT PULL] PCI fixes for v4.5

[Bjorn Helgaas]

Hi Linus,

Here's another fix for v4.5.  It fixes an ARM regression in v4.0 that
causes many boxes to crash on boot, including cns3xxx, dove, footbridge,
iopl13xx, ip32x, iop33x, ixp4xx, ks8695, mv78xx0, orion5x, pxa, sa1100,
etc.  The change is in code that's only built for ARM and ARM64.

Bjorn


The following changes since commit 1195c103f6c98d9ff381cac3a8760d4f8a133627:

  PCI: layerscape: Fix MSG TLP drop setting (2016-02-29 17:24:15 -0600)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git tags/pci-v4.5-fixes-5

for you to fetch changes up to 54c6e2dd00c313d0add58e5befe62fe6f286d03b:

  PCI: Allow a NULL "parent" pointer in pci_bus_assign_domain_nr() (2016-03-07 14:33:16 -0600)

----------------------------------------------------------------
PCI updates for v4.5:

  Enumeration
    Allow generic PCI domains without bridge "parent" pointer (Krzysztof Hałasa)

----------------------------------------------------------------
Krzysztof =?utf-8?Q?Ha=C5=82asa?= (1):
      PCI: Allow a NULL "parent" pointer in pci_bus_assign_domain_nr()

 drivers/pci/pci.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

[GIT PULL] PCI fixes for v4.5

[Bjorn Helgaas]

Hi Linus,

The big chunk here is the paravirtual front-end for Linux guests of a
Microsoft Hyper-V VM.  It's new, so no risk of regressions to pci-hyperv
itself.  It does include minor changes to common code, but they are
low-risk.

This also reverts a few pieces of the recent IOAPIC hotplug work because
they caused a regression for existing drivers that require IRQs to be
enabled for upstream bridges.

Finally, explicitly restrict the MVEBU driver to 32-bit ARM because it uses
some PCI glue only available there.  It depends on ARCH_MVEBU, which used
to be 32-bit ARM only but is now becoming available for 64-bit ARM.

Bjorn


The following changes since commit 0cf1337e0b83c16de4e7e98dad3a6afce6043fea:

  PCI: rcar: Add device tree support for r8a7793 (2016-02-05 14:13:53 -0600)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git tags/pci-v4.5-fixes-2

for you to fetch changes up to 2f8f01f7e495901042339a333d4385ed5b1e426a:

  Merge branch 'pci/host-hv' into for-linus (2016-02-27 08:52:36 -0600)

----------------------------------------------------------------
PCI updates for v4.5:

  Enumeration
    Revert x86 pcibios_alloc_irq() to fix regression (Bjorn Helgaas)

  Marvell MVEBU host bridge driver
    Restrict build to 32-bit ARM (Thierry Reding)

  Microsoft Hyper-V host bridge driver
    Add paravirtual front-end for guests of Microsoft Hyper-V VMs (Jake Oshins)

----------------------------------------------------------------
Bjorn Helgaas (4):
      Revert "x86/PCI: Don't alloc pcibios-irq when MSI is enabled"
      Revert "PCI: Add helpers to manage pci_dev->irq and pci_dev->irq_managed"
      Revert "PCI, x86: Implement pcibios_alloc_irq() and pcibios_free_irq()"
      Merge branch 'pci/host-hv' into for-linus

Jake Oshins (3):
      PCI: Add fwnode_handle to x86 pci_sysdata
      PCI: Look up IRQ domain by fwnode_handle
      PCI: hv: Add paravirtual PCI front-end for Microsoft Hyper-V VMs

Thierry Reding (1):
      PCI: mvebu: Restrict build to 32-bit ARM

 MAINTAINERS                    |    1 +
 arch/x86/include/asm/pci.h     |   15 +
 arch/x86/include/asm/pci_x86.h |    2 +
 arch/x86/pci/common.c          |   26 +-
 arch/x86/pci/intel_mid_pci.c   |    9 +-
 arch/x86/pci/irq.c             |   23 +-
 drivers/acpi/pci_irq.c         |   17 +-
 drivers/pci/Kconfig            |    7 +
 drivers/pci/host/Kconfig       |    1 +
 drivers/pci/host/Makefile      |    1 +
 drivers/pci/host/pci-hyperv.c  | 2346 ++++++++++++++++++++++++++++++++++++++++
 drivers/pci/probe.c            |   15 +
 include/linux/pci.h            |   21 +-
 13 files changed, 2437 insertions(+), 47 deletions(-)
 create mode 100644 drivers/pci/host/pci-hyperv.c

Re: [GIT PULL] PCI fixes for v4.5

[Linus Torvalds]

On Sat, Feb 27, 2016 at 7:14 AM, Bjorn Helgaas <helgaas@kernel.org> wrote:
>
> The big chunk here is the paravirtual front-end for Linux guests of a
> Microsoft Hyper-V VM.  It's new, so no risk of regressions to pci-hyperv
> itself.  It does include minor changes to common code, but they are
> low-risk.

I really don't want to take new features like this that change
existing code when I'm about to do a rc6.

I've done late hardware-enabling pulls before with new drivers etc,
but then they are meant to enable consumer hardware that people would
have trouble getting Linux installed on etc. A paravirt Hyper-V VM
install doesn't really count as that kind of "we need to get this in
quickly out of the normal development model".

I didn't check, but can you peel off that part if it's at the top and
just send me the actual bugfixes?

                 Linus

Re: [GIT PULL] PCI fixes for v4.5

[Bjorn Helgaas]

On Sat, Feb 27, 2016 at 10:22:04AM -0800, Linus Torvalds wrote:
> On Sat, Feb 27, 2016 at 7:14 AM, Bjorn Helgaas <helgaas@kernel.org> wrote:
> >
> > The big chunk here is the paravirtual front-end for Linux guests of a
> > Microsoft Hyper-V VM.  It's new, so no risk of regressions to pci-hyperv
> > itself.  It does include minor changes to common code, but they are
> > low-risk.
> 
> I really don't want to take new features like this that change
> existing code when I'm about to do a rc6.
> 
> I've done late hardware-enabling pulls before with new drivers etc,
> but then they are meant to enable consumer hardware that people would
> have trouble getting Linux installed on etc. A paravirt Hyper-V VM
> install doesn't really count as that kind of "we need to get this in
> quickly out of the normal development model".
> 
> I didn't check, but can you peel off that part if it's at the top and
> just send me the actual bugfixes?

Of course!  The Hyper-V stuff was the top-most merge, so I dropped
that and added a new tag, pci-v4.5-fixes-3, with just the fixes.  Here
it is:


The following changes since commit 0cf1337e0b83c16de4e7e98dad3a6afce6043fea:

  PCI: rcar: Add device tree support for r8a7793 (2016-02-05 14:13:53 -0600)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git tags/pci-v4.5-fixes-3

for you to fetch changes up to 61d9e854dfb91b46b99ffd3d31fc7d45d2b95f31:

  PCI: mvebu: Restrict build to 32-bit ARM (2016-02-27 08:52:20 -0600)

----------------------------------------------------------------
PCI updates for v4.5:

  Enumeration
    Revert x86 pcibios_alloc_irq() to fix regression (Bjorn Helgaas)

  Marvell MVEBU host bridge driver
    Restrict build to 32-bit ARM (Thierry Reding)

----------------------------------------------------------------
Bjorn Helgaas (3):
      Revert "x86/PCI: Don't alloc pcibios-irq when MSI is enabled"
      Revert "PCI: Add helpers to manage pci_dev->irq and pci_dev->irq_managed"
      Revert "PCI, x86: Implement pcibios_alloc_irq() and pcibios_free_irq()"

Thierry Reding (1):
      PCI: mvebu: Restrict build to 32-bit ARM

 arch/x86/include/asm/pci_x86.h |  2 ++
 arch/x86/pci/common.c          | 26 ++++++++++----------------
 arch/x86/pci/intel_mid_pci.c   |  9 +++------
 arch/x86/pci/irq.c             | 23 +++++++++++++++++++----
 drivers/acpi/pci_irq.c         | 17 +++++++++++++----
 drivers/pci/host/Kconfig       |  1 +
 include/linux/pci.h            | 17 -----------------
 7 files changed, 48 insertions(+), 47 deletions(-)

[GIT PULL] PCI fixes for v4.5

[Bjorn Helgaas]

Hi Linus,

These are some Renesas binding updates for PCI host controllers, a
Broadcom fix for a regression we added in v4.5-rc1, and a fix for
an AER use-after-free problem that can cause memory corruption.

Bjorn


The following changes since commit 92e963f50fc74041b5e9e744c330dca48e04f08d:

  Linux 4.5-rc1 (2016-01-24 13:06:47 -0800)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git tags/pci-v4.5-fixes-1

for you to fetch changes up to 0cf1337e0b83c16de4e7e98dad3a6afce6043fea:

  PCI: rcar: Add device tree support for r8a7793 (2016-02-05 14:13:53 -0600)

----------------------------------------------------------------
PCI updates for v4.5:

  AER
    Flush workqueue on device remove to avoid use-after-free (Sebastian Andrzej Siewior)

  Broadcom iProc host bridge driver
    Allow multiple devices except on PAXC (Ray Jui)

  Renesas R-Car host bridge driver
    Add gen2 device tree support for r8a7793 (Simon Horman)
    Add device tree support for r8a7793 (Simon Horman)

----------------------------------------------------------------
Ray Jui (1):
      PCI: iproc: Allow multiple devices except on PAXC

Sebastian Andrzej Siewior (1):
      PCI/AER: Flush workqueue on device remove to avoid use-after-free

Simon Horman (2):
      PCI: rcar: Add gen2 device tree support for r8a7793
      PCI: rcar: Add device tree support for r8a7793

 .../devicetree/bindings/pci/pci-rcar-gen2.txt      |  1 +
 Documentation/devicetree/bindings/pci/rcar-pci.txt |  1 +
 drivers/pci/host/pcie-iproc.c                      | 29 ++++++++--------------
 drivers/pci/pcie/aer/aerdrv.c                      |  4 +--
 drivers/pci/pcie/aer/aerdrv.h                      |  1 -
 drivers/pci/pcie/aer/aerdrv_core.c                 |  2 --
 6 files changed, 14 insertions(+), 24 deletions(-)