linux-toradex.git/arch/x86/kernel/irq.c, branch v4.4.86

x86/irq: Call irq_force_move_complete with irq descriptor

2016-03-03T23:07:31+00:00

commit 90a2282e23f0522e4b3f797ad447c5e91bf7fe32 upstream.

First of all there is no point in looking up the irq descriptor again, but we
also need the descriptor for the final cleanup race fix in the next
patch. Make that change seperate. No functional difference.

Signed-off-by: Thomas Gleixner 
Tested-by: Borislav Petkov 
Tested-by: Joe Lawrence 
Cc: Jiang Liu 
Cc: Jeremiah Mahler 
Cc: andy.shevchenko@gmail.com
Cc: Guenter Roeck 
Link: http://lkml.kernel.org/r/20151231160107.125211743@linutronix.de
Signed-off-by: Thomas Gleixner 
Signed-off-by: Greg Kroah-Hartman

x86/irq: Validate that irq descriptor is still active

2016-03-03T23:07:31+00:00

commit 36f34c8c63da3e272fd66f91089228c22d2b6e8b upstream.

In fixup_irqs() we unconditionally dereference the irq chip of an irq
descriptor. The descriptor might still be valid, but already cleaned up,
i.e. the chip removed. Add a check for this condition.

Signed-off-by: Thomas Gleixner 
Cc: Jiang Liu 
Cc: Joe Lawrence 
Cc: Jeremiah Mahler 
Cc: Borislav Petkov 
Cc: andy.shevchenko@gmail.com
Cc: Guenter Roeck 
Link: http://lkml.kernel.org/r/20151231160106.236423282@linutronix.de
Signed-off-by: Thomas Gleixner 
Signed-off-by: Greg Kroah-Hartman

Merge branch 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2015-09-01T22:20:51+00:00

Pull x86 apic updates from Thomas Gleixner:
 "This udpate contains:

   - rework the irq vector array to store a pointer to the irq
     descriptor instead of the irq number to avoid a lookup of the irq
     descriptor in the irq entry path

   - lguest interrupt handling cleanups

   - conversion of the local apic timer to the new clockevent callbacks

   - preparatory changes for the irq argument removal of interrupt flow
     handlers"

* 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/irq: Do not dereference irq descriptor before checking it
  tools/lguest: Clean up include dir
  tools/lguest: Fix redefinition of struct virtio_pci_cfg_cap
  x86/irq: Store irq descriptor in vector array
  genirq: Provide irq_desc_has_action
  x86/irq: Get rid of an indentation level
  x86/irq: Rename VECTOR_UNDEFINED to VECTOR_UNUSED
  x86/irq: Replace numeric constant
  x86/irq: Protect smp_cleanup_move
  x86/lguest: Do not setup unused irq vectors
  x86/lguest: Clean up lguest_setup_irq
  x86/apic: Drop local_irq_save/restore in timer callbacks
  x86/apic: Migrate apic timer to new set_state interface
  x86/irq: Use access helper irq_data_get_affinity_mask()
  x86/irq: Use accessor irq_data_get_irq_handler_data()
  x86/irq: Use accessor irq_data_get_node()

Merge branch 'x86-irq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2015-09-01T17:05:44+00:00

Pull x86 irq fixlet from Ingo Molnar:
 "A single change that hides the 'HYP:' line in /proc/interrupts when
  it's unused"

* 'x86-irq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/irq: Hide 'HYP:' line in /proc/interrupts when not on Xen/Hyper-V

Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2015-09-01T15:40:25+00:00

Pull x86 asm changes from Ingo Molnar:
 "The biggest changes in this cycle were:

   - Revamp, simplify (and in some cases fix) Time Stamp Counter (TSC)
     primitives.  (Andy Lutomirski)

   - Add new, comprehensible entry and exit handlers written in C.
     (Andy Lutomirski)

   - vm86 mode cleanups and fixes.  (Brian Gerst)

   - 32-bit compat code cleanups.  (Brian Gerst)

  The amount of simplification in low level assembly code is already
  palpable:

     arch/x86/entry/entry_32.S                          | 130 +----
     arch/x86/entry/entry_64.S                          | 197 ++-----

  but more simplifications are planned.

  There's also the usual laudry mix of low level changes - see the
  changelog for details"

* 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (83 commits)
  x86/asm: Drop repeated macro of X86_EFLAGS_AC definition
  x86/asm/msr: Make wrmsrl() a function
  x86/asm/delay: Introduce an MWAITX-based delay with a configurable timer
  x86/asm: Add MONITORX/MWAITX instruction support
  x86/traps: Weaken context tracking entry assertions
  x86/asm/tsc: Add rdtscll() merge helper
  selftests/x86: Add syscall_nt selftest
  selftests/x86: Disable sigreturn_64
  x86/vdso: Emit a GNU hash
  x86/entry: Remove do_notify_resume(), syscall_trace_leave(), and their TIF masks
  x86/entry/32: Migrate to C exit path
  x86/entry/32: Remove 32-bit syscall audit optimizations
  x86/vm86: Rename vm86->v86flags and v86mask
  x86/vm86: Rename vm86->vm86_info to user_vm86
  x86/vm86: Clean up vm86.h includes
  x86/vm86: Move the vm86 IRQ definitions to vm86.h
  x86/vm86: Use the normal pt_regs area for vm86
  x86/vm86: Eliminate 'struct kernel_vm86_struct'
  x86/vm86: Move fields from 'struct kernel_vm86_struct' to 'struct vm86'
  x86/vm86: Move vm86 fields out of 'thread_struct'
  ...

x86/irq: Store irq descriptor in vector array

2015-08-05T22:14:59+00:00

We can spare the irq_desc lookup in the interrupt entry code if we
store the descriptor pointer in the vector array instead the interrupt
number.

Signed-off-by: Thomas Gleixner 
Cc: Jiang Liu 
Cc: Peter Zijlstra 
Cc: Rusty Russell 
Cc: Bjorn Helgaas 
Link: http://lkml.kernel.org/r/20150802203609.717724106@linutronix.de
Signed-off-by: Thomas Gleixner

x86/irq: Get rid of an indentation level

2015-08-05T22:14:59+00:00

Make the code simpler to read.

Signed-off-by: Thomas Gleixner 
Cc: Jiang Liu 
Cc: Peter Zijlstra 
Cc: Rusty Russell 
Cc: Bjorn Helgaas 
Link: http://lkml.kernel.org/r/20150802203609.555253675@linutronix.de
Signed-off-by: Thomas Gleixner

x86/irq: Rename VECTOR_UNDEFINED to VECTOR_UNUSED

2015-08-05T22:14:58+00:00

VECTOR_UNDEFINED is a misnomer. The vector is defined, but unused.

Signed-off-by: Thomas Gleixner 
Cc: Jiang Liu 
Cc: Peter Zijlstra 
Cc: Rusty Russell 
Cc: Bjorn Helgaas 
Link: http://lkml.kernel.org/r/20150802203609.477282494@linutronix.de
Signed-off-by: Thomas Gleixner

x86/irq: Replace numeric constant

2015-08-05T22:14:58+00:00

Use the proper define instead of 0.

Signed-off-by: Thomas Gleixner 
Cc: Jiang Liu 
Cc: Peter Zijlstra 
Cc: Rusty Russell 
Cc: Bjorn Helgaas 
Link: http://lkml.kernel.org/r/20150802203609.385495420@linutronix.de
Signed-off-by: Thomas Gleixner

Merge branch 'linus' into x86/apic

2015-08-05T22:00:32+00:00

Pull in upstream changes to avoid conflicts