Commit Graph

243 Commits

Author SHA1 Message Date
Max Filippov dc241f2c17 xtensa: switch to generic sys_execve()
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-25 15:00:44 -07:00
Max Filippov f0a1bf0859 xtensa: switch to generic kernel_execve()
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-25 15:00:36 -07:00
Max Filippov 3306a72669 xtensa: switch to generic kernel_thread()
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-25 15:00:03 -07:00
Chris Zankel 6ebe7da25b xtensa: reset windowbase/windowstart when cloning the VM
When we copy a user thread with CLONE_VM, we also have to reset
windowbase and windowstart to start a pristine stack frame. Otherwise,
overflows can happen using the address 0 as the stack pointer.
Also add a special case for vfork, which continues on the
parent stack until it calls execve. Because this could be a call8, we
need to spill the stack pointer of the previus frame (if still 'live' in
the register file).

Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-25 14:53:36 -07:00
Chris Zankel 2f72d4f6a2 xtensa: allow multi-inclusion for uapi/unistd.h
Xtensa implements a method that allows to generate a arbitrary output
for each system call by defining the __SYSCALL(number, function, num_args).
This usually requires to include uapi/unistd.h twice. Instead of removing
the guard agains multiple inclusion entirely, allow to include unistd.h again
only if __SYSCALL is defined. Note that __SYSCALL gets always undefined at
the end of the file.

Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-25 14:53:36 -07:00
Chris Zankel 39070cb8a3 xtensa: minor compiler warning fix
Fix two compiler warnings complaining about truncating a value on
a 64-bit host, and about declaring an unused variable that is only
used for a specific configuration.

Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-19 10:24:20 -07:00
David Howells 83596729ad UAPI: (Scripted) Disintegrate arch/xtensa/include/asm
UAPI: (Scripted) Disintegrate arch/xtensa/include/asm

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Michael Kerrisk <mtk.manpages@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Dave Jones <davej@redhat.com>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-15 21:48:53 -07:00
Max Filippov 4ded6282ca xtensa: fix unaligned usermode access
- correct use of .config #define name;
      CONFIG_UNALIGNED_USER ---> CONFIG_XTENSA_UNALIGNED_USER

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Pete Delaney <piet@tensilica.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-15 21:48:41 -07:00
Max Filippov bc5378fcba xtensa: reorganize SR referencing
- reference SRs by names where possible, not by numbers;
- get rid of __stringify around SR names where possible;
- remove unneeded SR names from asm/regs.h;
- add SREG_ prefix to remaining SR names;

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-15 21:48:08 -07:00
Max Filippov f4349b6e01 xtensa: fix boot parameters parsing
Boot parameter tags with handlers are ignored like this:

	[    0.000000] Ignoring tag 0x00001003
	[    0.000000] Ignoring tag 0x00001001
	[    0.000000] Ignoring tag 0x00001004

because neither tagtable entries nor tag handlers appear in the vmlinux.

Fix tagtable definition attributes so that tag entries are not dropped.

Fix end of memory bank calculation in parse_tag_mem: it is intended to
round down to page size, but instead did something strange leading to
hang right after boot.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-15 21:43:15 -07:00
Marc Gauthier 84ed30538b xtensa: copy_thread with CLONE_VM must not copy live parent AR windows
When doing a fork (new VM), the new task has a mirror image of the
parent's stack, so keeps the same live register windows etc.
However when doing a clone with CLONE_VM, keeping the same VM
(eg. when creating a new thread), the child starts afresh on a new
stack -- it cannot share any part of the parent stack.  It
especially cannot have the same live AR windows as the parent,
otherwise it will overwrite the parent stack on overflow, likely
causing corruption.  (and so it did...)

Effectively, the register windows need to be spilled.
Turns out it's much easier to simply not copy parent register
windows when CLONE_VM is set.

Signed-off-by: Marc Gauthier <marc@tensilica.com>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-15 21:42:27 -07:00
Jeff Layton 91a27b2a75 vfs: define struct filename and have getname() return it
getname() is intended to copy pathname strings from userspace into a
kernel buffer. The result is just a string in kernel space. It would
however be quite helpful to be able to attach some ancillary info to
the string.

For instance, we could attach some audit-related info to reduce the
amount of audit-related processing needed. When auditing is enabled,
we could also call getname() on the string more than once and not
need to recopy it from userspace.

This patchset converts the getname()/putname() interfaces to return
a struct instead of a string. For now, the struct just tracks the
string in kernel space and the original userland pointer for it.

Later, we'll add other information to the struct as it becomes
convenient.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-10-12 20:14:55 -04:00
Linus Torvalds 8213a2f3ee Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal
Pull pile 2 of execve and kernel_thread unification work from Al Viro:
 "Stuff in there: kernel_thread/kernel_execve/sys_execve conversions for
  several more architectures plus assorted signal fixes and cleanups.

  There'll be more (in particular, real fixes for the alpha
  do_notify_resume() irq mess)..."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: (43 commits)
  alpha: don't open-code trace_report_syscall_{enter,exit}
  Uninclude linux/freezer.h
  m32r: trim masks
  avr32: trim masks
  tile: don't bother with SIGTRAP in setup_frame
  microblaze: don't bother with SIGTRAP in setup_rt_frame()
  mn10300: don't bother with SIGTRAP in setup_frame()
  frv: no need to raise SIGTRAP in setup_frame()
  x86: get rid of duplicate code in case of CONFIG_VM86
  unicore32: remove pointless test
  h8300: trim _TIF_WORK_MASK
  parisc: decide whether to go to slow path (tracesys) based on thread flags
  parisc: don't bother looping in do_signal()
  parisc: fix double restarts
  bury the rest of TIF_IRET
  sanitize tsk_is_polling()
  bury _TIF_RESTORE_SIGMASK
  unicore32: unobfuscate _TIF_WORK_MASK
  mips: NOTIFY_RESUME is not needed in TIF masks
  mips: merge the identical "return from syscall" per-ABI code
  ...

Conflicts:
	arch/arm/include/asm/thread_info.h
2012-10-12 10:49:08 +09:00
Linus Torvalds 1ea4f4f840 Xtensa patchset for 3.7
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Merge tag 'xtensa-next-20121008' of git://github.com/czankel/xtensa-linux

Pull Xtensa patchset from Chris Zankel:
 "The Xtensa tree has been broken for some time now, and this patchset
  brings it back to life.  It has been part of the linux-next tree for
  some time.

  Most changes are inside the xtensa subdirectory; the other changes
  mostly add another rule to already existing #ifdefs to exclude Xtensa,
  where required.  The only 'common' change is to add two more sections
  ('.xt.prop' and '.xt.lit') to the white list in modpost."

* tag 'xtensa-next-20121008' of git://github.com/czankel/xtensa-linux: (27 commits)
  xtensa: Setup CROSS_COMPILE at the top
  xtensa: drop CONFIG_EMBEDDED_RAMDISK
  xtensa: fix TIOCGSERIAL and TIOCSSERIAL definitions
  xtensa: provide dummy gcc intrinsics
  xtensa: add missing symbol exports
  parport: disable for xtensa arch
  xtensa: rename MISC SR definition to avoid name clashes
  hisax: disable build for big-endian xtensa
  xtensa: fix CODA build
  xtensa: fix parallel make
  xtensa: ISS: drop unused io.c
  xtensa: ISS: exit simulator in case of halt or poweroff
  xtensa: ISS: change keyboard polling rate
  xtensa: ISS: add platform_pcibios_init
  xtensa: ISS: add dummy serial.h for ISS platform
  xtensa: change default platform clock frequency to 10MHz
  xtensa: add ARCH_WANT_OPTIONAL_GPIOLIB to xtensa config
  xtensa: set NO_IOPORT to 'n' by default
  xtensa: adopt generic io routines
  xtensa: fix ioremap
  ...
2012-10-09 16:11:46 +09:00
Max Filippov 9ad79b5851 xtensa: drop CONFIG_EMBEDDED_RAMDISK
Remove Kconfig entries, boot subdirectory, dependencies from other
boot-* Makefiles, and sections from ld scripts.

Remove stale redboot code that used to pass initrd addresses in a3 and
a4 to _start.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-03 15:13:09 -07:00
Max Filippov 6907b4564b xtensa: provide dummy gcc intrinsics
__xtensa_libgcc_window_spill is needed for __builtin_return_address(1),
but its libgcc implementation cannot be used as it makes a syscall.

Atomic intrinsics are used by single staging driver.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-03 15:12:56 -07:00
Max Filippov d3738f407c xtensa: add missing symbol exports
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-03 15:12:52 -07:00
Max Filippov fa48cf4269 xtensa: change default platform clock frequency to 10MHz
Existing simulators show this level of performance.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-03 15:11:59 -07:00
Max Filippov d38efc1f15 xtensa: adopt generic io routines
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-03 15:11:42 -07:00
Max Filippov 33c8213d69 xtensa: fix xtensa_irq_unmask calls
xtensa_irq_disable/xtensa_irq_enable used to call xtensa_irq_unmask with
wrong argument.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-03 15:11:19 -07:00
Max Filippov 2e6ee5ec88 xtensa/PCI: fix WT caching attribute
Fix caching attributes setup providing correct _PAGE_CA_* names.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-03 15:11:13 -07:00
Max Filippov f6a03a12ec xtensa: fix linker script transformation for .text.unlikely
Now that binutils generate *.unlikely sections which don't follow
documented (info as) literal section naming rules, section name
transformation script doesn't work well resulting in the following
errors at vmlinux link time:

	main.c:(.text.unlikely+0x3): dangerous relocation: l32r: literal
				     placed after use: .literal.unlikely

Fix section name transformation script by adding specific rule for
.text.unlikely sections.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2012-10-03 15:11:04 -07:00
Linus Torvalds fdb2f9c2eb PCI changes for the 3.7 merge window:
Host bridge hotplug
     - Protect acpi_pci_drivers and acpi_pci_roots (Taku Izumi)
     - Clear host bridge resource info to avoid issue when releasing (Yinghai Lu)
     - Notify acpi_pci_drivers when hot-plugging host bridges (Jiang Liu)
     - Use standard list ops for acpi_pci_drivers (Jiang Liu)
 
   Device hotplug
     - Use pci_get_domain_bus_and_slot() to close hotplug races (Jiang Liu)
     - Remove fakephp driver (Bjorn Helgaas)
     - Fix VGA ref count in hotplug remove path (Yinghai Lu)
     - Allow acpiphp to handle PCIe ports without native hotplug (Jiang Liu)
     - Implement resume regardless of pciehp_force param (Oliver Neukum)
     - Make pci_fixup_irqs() work after init (Thierry Reding)
 
   Miscellaneous
     - Add pci_pcie_type(dev) and remove pci_dev.pcie_type (Yijing Wang)
     - Factor out PCI Express Capability accessors (Jiang Liu)
     - Add pcibios_window_alignment() so powerpc EEH can use generic resource assignment (Gavin Shan)
     - Make pci_error_handlers const (Stephen Hemminger)
     - Cleanup drivers/pci/remove.c (Bjorn Helgaas)
     - Improve Vendor-Specific Extended Capability support (Bjorn Helgaas)
     - Use standard list ops for bus->devices (Bjorn Helgaas)
     - Avoid kmalloc in pci_get_subsys() and pci_get_class() (Feng Tang)
     - Reassign invalid bus number ranges (Intel DP43BF workaround) (Yinghai Lu)
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Merge tag 'for-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI changes from Bjorn Helgaas:
 "Host bridge hotplug
    - Protect acpi_pci_drivers and acpi_pci_roots (Taku Izumi)
    - Clear host bridge resource info to avoid issue when releasing
      (Yinghai Lu)
    - Notify acpi_pci_drivers when hot-plugging host bridges (Jiang Liu)
    - Use standard list ops for acpi_pci_drivers (Jiang Liu)

  Device hotplug
    - Use pci_get_domain_bus_and_slot() to close hotplug races (Jiang
      Liu)
    - Remove fakephp driver (Bjorn Helgaas)
    - Fix VGA ref count in hotplug remove path (Yinghai Lu)
    - Allow acpiphp to handle PCIe ports without native hotplug (Jiang
      Liu)
    - Implement resume regardless of pciehp_force param (Oliver Neukum)
    - Make pci_fixup_irqs() work after init (Thierry Reding)

  Miscellaneous
    - Add pci_pcie_type(dev) and remove pci_dev.pcie_type (Yijing Wang)
    - Factor out PCI Express Capability accessors (Jiang Liu)
    - Add pcibios_window_alignment() so powerpc EEH can use generic
      resource assignment (Gavin Shan)
    - Make pci_error_handlers const (Stephen Hemminger)
    - Cleanup drivers/pci/remove.c (Bjorn Helgaas)
    - Improve Vendor-Specific Extended Capability support (Bjorn
      Helgaas)
    - Use standard list ops for bus->devices (Bjorn Helgaas)
    - Avoid kmalloc in pci_get_subsys() and pci_get_class() (Feng Tang)
    - Reassign invalid bus number ranges (Intel DP43BF workaround)
      (Yinghai Lu)"

* tag 'for-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (102 commits)
  PCI: acpiphp: Handle PCIe ports without native hotplug capability
  PCI/ACPI: Use acpi_driver_data() rather than searching acpi_pci_roots
  PCI/ACPI: Protect acpi_pci_roots list with mutex
  PCI/ACPI: Use acpi_pci_root info rather than looking it up again
  PCI/ACPI: Pass acpi_pci_root to acpi_pci_drivers' add/remove interface
  PCI/ACPI: Protect acpi_pci_drivers list with mutex
  PCI/ACPI: Notify acpi_pci_drivers when hot-plugging PCI root bridges
  PCI/ACPI: Use normal list for struct acpi_pci_driver
  PCI/ACPI: Use DEVICE_ACPI_HANDLE rather than searching acpi_pci_roots
  PCI: Fix default vga ref_count
  ia64/PCI: Clear host bridge aperture struct resource
  x86/PCI: Clear host bridge aperture struct resource
  PCI: Stop all children first, before removing all children
  Revert "PCI: Use hotplug-safe pci_get_domain_bus_and_slot()"
  PCI: Provide a default pcibios_update_irq()
  PCI: Discard __init annotations for pci_fixup_irqs() and related functions
  PCI: Use correct type when freeing bus resource list
  PCI: Check P2P bridge for invalid secondary/subordinate range
  PCI: Convert "new_id"/"remove_id" into generic pci_bus driver attributes
  xen-pcifront: Use hotplug-safe pci_get_domain_bus_and_slot()
  ...
2012-10-01 12:05:36 -07:00
Richard Weinberger 3cffdc8c3a Uninclude linux/freezer.h
This include is no longer needed.
(seems to be a leftover from try_to_freeze())

Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-10-01 09:58:18 -04:00
Al Viro 13d112ed32 xtensa: can't get to do_notify_resume() when user_mode(regs) is not true
asm glue checks that

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-10-01 09:58:09 -04:00
Frederic Weisbecker 11ad47a0ed xtensa: Add missing RCU idle APIs on idle loop
In the old times, the whole idle task was considered
as an RCU quiescent state. But as RCU became more and
more successful overtime, some RCU read side critical
section have been added even in the code of some
architectures idle tasks, for tracing for example.

So nowadays, rcu_idle_enter() and rcu_idle_exit() must
be called by the architecture to tell RCU about the part
in the idle loop that doesn't make use of rcu read side
critical sections, typically the part that puts the CPU
in low power mode.

This is necessary for RCU to find the quiescent states in
idle in order to complete grace periods.

Add this missing pair of calls in the xtensa's idle loop.

Reported-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: <stable@vger.kernel.org> # 3.3+
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2012-09-23 07:44:51 -07:00
Thierry Reding 8885b7b637 PCI: Provide a default pcibios_update_irq()
Most architectures implement this in exactly the same way. Instead of
having each architecture duplicate this function, provide a single
implementation in the core and make it a weak symbol so that it can be
overridden on architectures where it is required.

Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-09-18 17:28:21 -06:00
Thierry Reding 3ddbebf878 PCI: Discard __init annotations for pci_fixup_irqs() and related functions
Remove the __init annotations in order to keep pci_fixup_irqs() around
after init (e.g. for hotplug). This requires the same change for the
implementation of pcibios_update_irq() on all architectures. While at
it, all __devinit annotations are removed as well, since they will be
useless now that HOTPLUG is always on.

Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-18 17:22:25 -06:00
Will Deacon 079a96ae38 ipc: add COMPAT_SHMLBA support
If the SHMLBA definition for a native task differs from the definition for
a compat task, the do_shmat() function would need to handle both.

This patch introduces COMPAT_SHMLBA, which is used by the compat shmat
syscall when calling the ipc code and allows architectures such as AArch64
(where the native SHMLBA is 64k but the compat (AArch32) definition is
16k) to provide the correct semantics for compat IPC system calls.

Cc: David S. Miller <davem@davemloft.net>
Cc: Chris Zankel <chris@zankel.net>
Cc: Arnd Bergmann <arnd@arndb.de>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-07-30 17:25:20 -07:00
Linus Torvalds 6dd53aa456 PCI changes for the 3.6 merge window:
Host bridge hotplug
     - Add MMCONFIG support for hot-added host bridges (Jiang Liu)
   Device hotplug
     - Move fixups from __init to __devinit (Sebastian Andrzej Siewior)
     - Call FINAL fixups for hot-added devices, too (Myron Stowe)
     - Factor out generic code for P2P bridge hot-add (Yinghai Lu)
     - Remove all functions in a slot, not just those with _EJx (Amos Kong)
   Dynamic resource management
     - Track bus number allocation (struct resource tree per domain) (Yinghai Lu)
     - Make P2P bridge 1K I/O windows work with resource reassignment (Bjorn Helgaas, Yinghai Lu)
     - Disable decoding while updating 64-bit BARs (Bjorn Helgaas)
   Power management
     - Add PCIe runtime D3cold support (Huang Ying)
   Virtualization
     - Add VFIO infrastructure (ACS, DMA source ID quirks) (Alex Williamson)
     - Add quirks for devices with broken INTx masking (Jan Kiszka)
   Miscellaneous
     - Fix some PCI Express capability version issues (Myron Stowe)
     - Factor out some arch code with a weak, generic, pcibios_setup() (Myron Stowe)
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Merge tag 'for-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI changes from Bjorn Helgaas:
 "Host bridge hotplug:
    - Add MMCONFIG support for hot-added host bridges (Jiang Liu)
  Device hotplug:
    - Move fixups from __init to __devinit (Sebastian Andrzej Siewior)
    - Call FINAL fixups for hot-added devices, too (Myron Stowe)
    - Factor out generic code for P2P bridge hot-add (Yinghai Lu)
    - Remove all functions in a slot, not just those with _EJx (Amos
      Kong)
  Dynamic resource management:
    - Track bus number allocation (struct resource tree per domain)
      (Yinghai Lu)
    - Make P2P bridge 1K I/O windows work with resource reassignment
      (Bjorn Helgaas, Yinghai Lu)
    - Disable decoding while updating 64-bit BARs (Bjorn Helgaas)
  Power management:
    - Add PCIe runtime D3cold support (Huang Ying)
  Virtualization:
    - Add VFIO infrastructure (ACS, DMA source ID quirks) (Alex
      Williamson)
    - Add quirks for devices with broken INTx masking (Jan Kiszka)
  Miscellaneous:
    - Fix some PCI Express capability version issues (Myron Stowe)
    - Factor out some arch code with a weak, generic, pcibios_setup()
      (Myron Stowe)"

* tag 'for-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (122 commits)
  PCI: hotplug: ensure a consistent return value in error case
  PCI: fix undefined reference to 'pci_fixup_final_inited'
  PCI: build resource code for M68K architecture
  PCI: pciehp: remove unused pciehp_get_max_lnk_width(), pciehp_get_cur_lnk_width()
  PCI: reorder __pci_assign_resource() (no change)
  PCI: fix truncation of resource size to 32 bits
  PCI: acpiphp: merge acpiphp_debug and debug
  PCI: acpiphp: remove unused res_lock
  sparc/PCI: replace pci_cfg_fake_ranges() with pci_read_bridge_bases()
  PCI: call final fixups hot-added devices
  PCI: move final fixups from __init to __devinit
  x86/PCI: move final fixups from __init to __devinit
  MIPS/PCI: move final fixups from __init to __devinit
  PCI: support sizing P2P bridge I/O windows with 1K granularity
  PCI: reimplement P2P bridge 1K I/O windows (Intel P64H2)
  PCI: disable MEM decoding while updating 64-bit MEM BARs
  PCI: leave MEM and IO decoding disabled during 64-bit BAR sizing, too
  PCI: never discard enable/suspend/resume_early/resume fixups
  PCI: release temporary reference in __nv_msi_ht_cap_quirk()
  PCI: restructure 'pci_do_fixups()'
  ...
2012-07-24 16:17:07 -07:00
Alan Cox 688bb4158f xtensa: fix incorrect memset
Addresses: https://bugzilla.kernel.org/show_bug.cgi?id=43871

Reported-by: <dcb314@hotmail.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-07-11 16:04:49 -07:00
Bjorn Helgaas 85a00dd391 Merge branch 'pci/myron-pcibios_setup' into next
* pci/myron-pcibios_setup:
  xtensa/PCI: factor out pcibios_setup()
  x86/PCI: adjust section annotations for pcibios_setup()
  unicore32/PCI: adjust section annotations for pcibios_setup()
  tile/PCI: factor out pcibios_setup()
  sparc/PCI: factor out pcibios_setup()
  sh/PCI: adjust section annotations for pcibios_setup()
  sh/PCI: factor out pcibios_setup()
  powerpc/PCI: factor out pcibios_setup()
  parisc/PCI: factor out pcibios_setup()
  MIPS/PCI: adjust section annotations for pcibios_setup()
  MIPS/PCI: factor out pcibios_setup()
  microblaze/PCI: factor out pcibios_setup()
  ia64/PCI: factor out pcibios_setup()
  cris/PCI: factor out pcibios_setup()
  alpha/PCI: factor out pcibios_setup()
  PCI: pull pcibios_setup() up into core
2012-07-05 15:31:05 -06:00
Myron Stowe 29e8d7bff2 xtensa/PCI: factor out pcibios_setup()
The PCI core provides a generic pcibios_setup() routine.  Drop this
architecture-specific version in favor of that.

Signed-off-by: Myron Stowe <myron.stowe@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-07-05 15:09:14 -06:00
Geert Uytterhoeven 5e7b6ed8e9 xtensa: replace xtensa-specific _f{data,text} by _s{data,text}
commit a2d063ac21 ("extable, core_kernel_data(): Make sure all archs
define _sdata") missed xtensa.  Xtensa does have a start of data marker,
but calls it _fdata, causing

    kernel/built-in.o:(.text+0x964): undefined reference to `_sdata'

_stext was already defined, but it was duplicated by _fdata.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Chris Zankel <chris@zankel.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-06-20 14:39:35 -07:00
Yinghai Lu b918c62e08 PCI: replace struct pci_bus secondary/subordinate with busn_res
Replace the struct pci_bus secondary/subordinate members with the
struct resource busn_res.  Later we'll build a resource tree of these
bus numbers.

[bhelgaas: changelog]
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2012-06-13 15:42:22 -06:00
Al Viro 03240b279d fixups for signal breakage
Obvious brainos spotted by Geert.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-04 17:47:34 -04:00
Al Viro efee984c27 new helper: signal_delivered()
Does block_sigmask() + tracehook_signal_handler();  called when
sigframe has been successfully built.  All architectures converted
to it; block_sigmask() itself is gone now (merged into this one).

I'm still not too happy with the signature, but that's a separate
story (IMO we need a structure that would contain signal number +
siginfo + k_sigaction, so that get_signal_to_deliver() would fill one,
signal_delivered(), handle_signal() and probably setup...frame() -
take one).

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01 12:58:52 -04:00
Al Viro 77097ae503 most of set_current_blocked() callers want SIGKILL/SIGSTOP removed from set
Only 3 out of 63 do not.  Renamed the current variant to __set_current_blocked(),
added set_current_blocked() that will exclude unblockable signals, switched
open-coded instances to it.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01 12:58:51 -04:00
Al Viro bf343dfd87 don't call try_to_freeze() from do_signal()
get_signal_to_deliver() will handle it itself

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01 12:58:49 -04:00
Al Viro a610d6e672 pull clearing RESTORE_SIGMASK into block_sigmask()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01 12:58:49 -04:00
Al Viro b7f9a11a6c new helper: sigmask_to_save()
replace boilerplate "should we use ->saved_sigmask or ->blocked?"
with calls of obvious inlined helper...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01 12:58:48 -04:00
Al Viro 51a7b448d4 new helper: restore_saved_sigmask()
first fruits of ..._restore_sigmask() helpers: now we can take
boilerplate "signal didn't have a handler, clear RESTORE_SIGMASK
and restore the blocked mask from ->saved_mask" into a common
helper.  Open-coded instances switched...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-06-01 12:58:47 -04:00
Al Viro a42c6ded82 move key_repace_session_keyring() into tracehook_notify_resume()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-05-23 22:09:20 -04:00
Linus Torvalds f9369910a6 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal
Pull first series of signal handling cleanups from Al Viro:
 "This is just the first part of the queue (about a half of it);
  assorted fixes all over the place in signal handling.

  This one ends with all sigsuspend() implementations switched to
  generic one (->saved_sigmask-based).

  With this, a bunch of assorted old buglets are fixed and most of the
  missing bits of NOTIFY_RESUME hookup are in place.  Two more fixes sit
  in arm and um trees respectively, and there's a couple of broken ones
  that need obvious fixes - parisc and avr32 check TIF_NOTIFY_RESUME
  only on one of two codepaths; fixes for that will happen in the next
  series"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: (55 commits)
  unicore32: if there's no handler we need to restore sigmask, syscall or no syscall
  xtensa: add handling of TIF_NOTIFY_RESUME
  microblaze: drop 'oldset' argument of do_notify_resume()
  microblaze: handle TIF_NOTIFY_RESUME
  score: add handling of NOTIFY_RESUME to do_notify_resume()
  m68k: add TIF_NOTIFY_RESUME and handle it.
  sparc: kill ancient comment in sparc_sigaction()
  h8300: missing checks of __get_user()/__put_user() return values
  frv: missing checks of __get_user()/__put_user() return values
  cris: missing checks of __get_user()/__put_user() return values
  powerpc: missing checks of __get_user()/__put_user() return values
  sh: missing checks of __get_user()/__put_user() return values
  sparc: missing checks of __get_user()/__put_user() return values
  avr32: struct old_sigaction is never used
  m32r: struct old_sigaction is never used
  xtensa: xtensa_sigaction doesn't exist
  alpha: tidy signal delivery up
  score: don't open-code force_sigsegv()
  cris: don't open-code force_sigsegv()
  blackfin: don't open-code force_sigsegv()
  ...
2012-05-23 18:11:45 -07:00
Linus Torvalds ec0d7f18ab Merge branch 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull fpu state cleanups from Ingo Molnar:
 "This tree streamlines further aspects of FPU handling by eliminating
  the prepare_to_copy() complication and moving that logic to
  arch_dup_task_struct().

  It also fixes the FPU dumps in threaded core dumps, removes and old
  (and now invalid) assumption plus micro-optimizes the exit path by
  avoiding an FPU save for dead tasks."

Fixed up trivial add-add conflict in arch/sh/kernel/process.c that came
in because we now do the FPU handling in arch_dup_task_struct() rather
than the legacy (and now gone) prepare_to_copy().

* 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86, fpu: drop the fpu state during thread exit
  x86, xsave: remove thread_has_fpu() bug check in __sanitize_i387_state()
  coredump: ensure the fpu state is flushed for proper multi-threaded core dump
  fork: move the real prepare_to_copy() users to arch_dup_task_struct()
2012-05-23 10:59:07 -07:00
Al Viro a53bb24e76 xtensa: add handling of TIF_NOTIFY_RESUME
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-05-21 23:59:48 -04:00
Al Viro 9ccc9c75c9 xtensa: switch to generic rt_sigsuspend(2)
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-05-21 23:58:06 -04:00
Al Viro 188f677f84 xtensa: ->restart_block.fn needs to be reset on rt_sigreturn
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-05-21 23:52:39 -04:00
Suresh Siddha 55ccf3fe3f fork: move the real prepare_to_copy() users to arch_dup_task_struct()
Historical prepare_to_copy() is mostly a no-op, duplicated for majority of
the architectures and the rest following the x86 model of flushing the extended
register state like fpu there.

Remove it and use the arch_dup_task_struct() instead.

Suggested-by: Oleg Nesterov <oleg@redhat.com>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Link: http://lkml.kernel.org/r/1336692811-30576-1-git-send-email-suresh.b.siddha@intel.com
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: David Howells <dhowells@redhat.com>
Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Chris Zankel <chris@zankel.net>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Mark Salter <msalter@redhat.com>
Cc: Aurelien Jacquiot <a-jacquiot@ti.com>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Richard Kuo <rkuo@codeaurora.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: James E.J. Bottomley <jejb@parisc-linux.org>
Cc: Helge Deller <deller@gmx.de>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Chen Liqin <liqin.chen@sunplusct.com>
Cc: Lennox Wu <lennox.wu@gmail.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2012-05-16 15:16:26 -07:00
Thomas Gleixner 67ba5293f7 Merge branch 'smp/threadalloc' into smp/hotplug
Reason: Pull in the separate branch which was created so arch/tile can
base further work on it.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2012-05-08 14:07:48 +02:00