sfrench/cifs-2.6.git
6 years agoMerge tag 'v4.15-rc6' into patchwork
Mauro Carvalho Chehab [Wed, 3 Jan 2018 09:14:04 +0000 (04:14 -0500)]
Merge tag 'v4.15-rc6' into patchwork

Linux 4.15-rc6

* tag 'v4.15-rc6': (734 commits)
  Linux 4.15-rc6
  MAINTAINERS: mark arch/blackfin/ and its gubbins as orphaned
  x86/ldt: Make LDT pgtable free conditional
  x86/ldt: Plug memory leak in error path
  x86/mm: Remove preempt_disable/enable() from __native_flush_tlb()
  x86/smpboot: Remove stale TLB flush invocations
  objtool: Fix seg fault with clang-compiled objects
  objtool: Fix seg fault caused by missing parameter
  kbuild: add '-fno-stack-check' to kernel build options
  timerqueue: Document return values of timerqueue_add/del()
  timers: Invoke timer_start_debug() where it makes sense
  nohz: Prevent a timer interrupt storm in tick_nohz_stop_sched_tick()
  timers: Reinitialize per cpu bases on hotplug
  timers: Use deferrable base independent of base::nohz_active
  genirq/msi, x86/vector: Prevent reservation mode for non maskable MSI
  genirq/irqdomain: Rename early argument of irq_domain_activate_irq()
  x86/vector: Use IRQD_CAN_RESERVE flag
  genirq: Introduce IRQD_CAN_RESERVE flag
  genirq/msi: Handle reactivation only on success
  gpio: brcmstb: Make really use of the new lockdep class
  ...

6 years agoLinux 4.15-rc6 v4.15-rc6
Linus Torvalds [Sun, 31 Dec 2017 22:47:43 +0000 (14:47 -0800)]
Linux 4.15-rc6

6 years agoMerge branch 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Linus Torvalds [Sun, 31 Dec 2017 21:13:56 +0000 (13:13 -0800)]
Merge branch 'x86/urgent' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Thomas Gleixner:
 "A couple of fixlets for x86:

   - Fix the ESPFIX double fault handling for 5-level pagetables

   - Fix the commandline parsing for 'apic=' on 32bit systems and update
     documentation

   - Make zombie stack traces reliable

   - Fix kexec with stack canary

   - Fix the delivery mode for APICs which was missed when the x86
     vector management was converted to single target delivery. Caused a
     regression due to the broken hardware which ignores affinity
     settings in lowest prio delivery mode.

   - Unbreak modules when AMD memory encryption is enabled

   - Remove an unused parameter of prepare_switch_to"

* 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/apic: Switch all APICs to Fixed delivery mode
  x86/apic: Update the 'apic=' description of setting APIC driver
  x86/apic: Avoid wrong warning when parsing 'apic=' in X86-32 case
  x86-32: Fix kexec with stack canary (CONFIG_CC_STACKPROTECTOR)
  x86: Remove unused parameter of prepare_switch_to
  x86/stacktrace: Make zombie stack traces reliable
  x86/mm: Unbreak modules that use the DMA API
  x86/build: Make isoimage work on Debian
  x86/espfix/64: Fix espfix double-fault handling on 5-level systems

6 years agoMerge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 31 Dec 2017 21:03:05 +0000 (13:03 -0800)]
Merge branch 'x86-pti-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 page table isolation fixes from Thomas Gleixner:
 "Four patches addressing the PTI fallout as discussed and debugged
  yesterday:

   - Remove stale and pointless TLB flush invocations from the hotplug
     code

   - Remove stale preempt_disable/enable from __native_flush_tlb()

   - Plug the memory leak in the write_ldt() error path"

* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/ldt: Make LDT pgtable free conditional
  x86/ldt: Plug memory leak in error path
  x86/mm: Remove preempt_disable/enable() from __native_flush_tlb()
  x86/smpboot: Remove stale TLB flush invocations

6 years agoMerge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 31 Dec 2017 20:30:34 +0000 (12:30 -0800)]
Merge branch 'timers-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull timer fixes from Thomas Gleixner:
 "A pile of fixes for long standing issues with the timer wheel and the
  NOHZ code:

   - Prevent timer base confusion accross the nohz switch, which can
     cause unlocked access and data corruption

   - Reinitialize the stale base clock on cpu hotplug to prevent subtle
     side effects including rollovers on 32bit

   - Prevent an interrupt storm when the timer softirq is already
     pending caused by tick_nohz_stop_sched_tick()

   - Move the timer start tracepoint to a place where it actually makes
     sense

   - Add documentation to timerqueue functions as they caused confusion
     several times now"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  timerqueue: Document return values of timerqueue_add/del()
  timers: Invoke timer_start_debug() where it makes sense
  nohz: Prevent a timer interrupt storm in tick_nohz_stop_sched_tick()
  timers: Reinitialize per cpu bases on hotplug
  timers: Use deferrable base independent of base::nohz_active

6 years agoMerge branch 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 31 Dec 2017 20:29:02 +0000 (12:29 -0800)]
Merge branch 'smp-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull smp fixlet from Thomas Gleixner:
 "A trivial build warning fix for newer compilers"

* 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  cpu/hotplug: Move inline keyword at the beginning of declaration

6 years agoMerge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 31 Dec 2017 20:27:19 +0000 (12:27 -0800)]
Merge branch 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull scheduler fixes from Thomas Gleixner:
 "Three patches addressing the fallout of the CPU_ISOLATION changes
  especially with NO_HZ_FULL plus documentation of boot parameter
  dependency"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/isolation: Document boot parameters dependency on CONFIG_CPU_ISOLATION=y
  sched/isolation: Enable CONFIG_CPU_ISOLATION=y by default
  sched/isolation: Make CONFIG_NO_HZ_FULL select CONFIG_CPU_ISOLATION

6 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 31 Dec 2017 19:47:24 +0000 (11:47 -0800)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf fixes from Thomas Gleixner:

 - plug a memory leak in the intel pmu init code

 - clang fixes

 - tooling fix to avoid including kernel headers

 - a fix for jvmti to generate correct debug information for inlined
   code

 - replace backtick with a regular shell function

 - fix the build in hardened environments

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/intel: Plug memory leak in intel_pmu_init()
  x86/asm: Allow again using asm.h when building for the 'bpf' clang target
  tools arch s390: Do not include header files from the kernel sources
  perf jvmti: Generate correct debug information for inlined code
  perf tools: Fix up build in hardened environments
  perf tools: Use shell function for perl cflags retrieval

6 years agoMerge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 31 Dec 2017 19:23:11 +0000 (11:23 -0800)]
Merge branch 'irq-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull irq fixes from Thomas Gleixner:
 "A rather large update after the kaisered maintainer finally found time
  to handle regression reports.

   - The larger part addresses a regression caused by the x86 vector
     management rework.

     The reservation based model does not work reliably for MSI
     interrupts, if they cannot be masked (yes, yet another hw
     engineering trainwreck). The reason is that the reservation mode
     assigns a dummy vector when the interrupt is allocated and switches
     to a real vector when the interrupt is requested.

     If the MSI entry cannot be masked then the initialization might
     raise an interrupt before the interrupt is requested, which ends up
     as spurious interrupt and causes device malfunction and worse. The
     fix is to exclude MSI interrupts which do not support masking from
     reservation mode and assign a real vector right away.

   - Extend the extra lockdep class setup for nested interrupts with a
     class for the recently added irq_desc::request_mutex so lockdep can
     differeniate and does not emit false positive warnings.

   - A ratelimit guard for the bad irq printout so in case a bad irq
     comes back immediately the system does not drown in dmesg spam"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  genirq/msi, x86/vector: Prevent reservation mode for non maskable MSI
  genirq/irqdomain: Rename early argument of irq_domain_activate_irq()
  x86/vector: Use IRQD_CAN_RESERVE flag
  genirq: Introduce IRQD_CAN_RESERVE flag
  genirq/msi: Handle reactivation only on success
  gpio: brcmstb: Make really use of the new lockdep class
  genirq: Guard handle_bad_irq log messages
  kernel/irq: Extend lockdep class for request mutex

6 years agoMerge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 31 Dec 2017 18:57:10 +0000 (10:57 -0800)]
Merge branch 'core-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull objtool fixes from Thomas Gleixner:
 "Three fixlets for objtool:

   - Address two segfaults related to missing parameter and clang
     objects

   - Make it compile clean with clang"

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  objtool: Fix seg fault with clang-compiled objects
  objtool: Fix seg fault caused by missing parameter
  objtool: Fix Clang enum conversion warning

6 years agoMerge tag 'char-misc-4.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregk...
Linus Torvalds [Sun, 31 Dec 2017 18:52:51 +0000 (10:52 -0800)]
Merge tag 'char-misc-4.15-rc6' of git://git./linux/kernel/git/gregkh/char-misc

Pull char/misc fixes from Greg KH:
 "Here are six small fixes of some of the char/misc drivers that have
  been sent in to resolve reported issues.

  Nothing major, a binder use-after-free fix, some thunderbolt bugfixes,
  a hyper-v bugfix, and an nvmem driver fix. All of these have been in
  linux-next with no reported issues for a while"

* tag 'char-misc-4.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  nvmem: meson-mx-efuse: fix reading from an offset other than 0
  binder: fix proc->files use-after-free
  vmbus: unregister device_obj->channels_kset
  thunderbolt: Mask ring interrupt properly when polling starts
  MAINTAINERS: Add thunderbolt.rst to the Thunderbolt driver entry
  thunderbolt: Make pathname to force_power shorter

6 years agoMerge tag 'driver-core-4.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 31 Dec 2017 18:50:05 +0000 (10:50 -0800)]
Merge tag 'driver-core-4.15-rc6' of git://git./linux/kernel/git/gregkh/driver-core

Pull driver core fixes from Greg KH:
 "Here are two driver core fixes for 4.15-rc6, resolving some reported
  issues.

  The first is a cacheinfo fix for DT based systems to resolve a
  reported issue that has been around for a while, and the other is to
  resolve a regression in the kobject uevent code that showed up in
  4.15-rc1.

  Both have been in linux-next for a while with no reported issues"

* tag 'driver-core-4.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  kobject: fix suppressing modalias in uevents delivered over netlink
  drivers: base: cacheinfo: fix cache type for non-architected system cache

6 years agoMerge tag 'staging-4.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Sun, 31 Dec 2017 18:48:09 +0000 (10:48 -0800)]
Merge tag 'staging-4.15-rc6' of git://git./linux/kernel/git/gregkh/staging

Pull staging fixes from Greg KH:
 "Here are three staging driver fixes for 4.15-rc6

  The first resolves a bug in the lustre driver that came about due to a
  broken cleanup patch, due to crazy list usage in that codebase.

  The remaining two are ion driver fixes, finally getting the CMA
  interaction to work properly, resolving two regressions in that area
  of the code.

  All have been in linux-next with no reported issues for a while"

* tag 'staging-4.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: android: ion: Fix dma direction for dma_sync_sg_for_cpu/device
  staging: ion: Fix ion_cma_heap allocations
  staging: lustre: lnet: Fix recent breakage from list_for_each conversion

6 years agoMerge tag 'tty-4.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Linus Torvalds [Sun, 31 Dec 2017 18:46:07 +0000 (10:46 -0800)]
Merge tag 'tty-4.15-rc6' of git://git./linux/kernel/git/gregkh/tty

Pull TTY fix from Greg KH:
 "Here is a single tty fix for a reported issue that you wrote the patch
  for :)

  It's been in linux-next for a week or so with no reported issues"

* tag 'tty-4.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  n_tty: fix EXTPROC vs ICANON interaction with TIOCINQ (aka FIONREAD)

6 years agoMerge tag 'usb-4.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Linus Torvalds [Sun, 31 Dec 2017 18:44:00 +0000 (10:44 -0800)]
Merge tag 'usb-4.15-rc6' of git://git./linux/kernel/git/gregkh/usb

Pull USB/PHY fixes from Greg KH:
 "Here are a number of small USB and PHY driver fixes for 4.15-rc6.

  Nothing major, but there are a number of regression fixes in here that
  resolve issues that have been reported a bunch. There are also the
  usual xhci fixes as well as a number of new usb serial device ids.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'usb-4.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  usb: xhci: Add XHCI_TRUST_TX_LENGTH for Renesas uPD720201
  xhci: Fix use-after-free in xhci debugfs
  xhci: Fix xhci debugfs NULL pointer dereference in resume from hibernate
  USB: serial: ftdi_sio: add id for Airbus DS P8GR
  usb: Add device quirk for Logitech HD Pro Webcam C925e
  usb: add RESET_RESUME for ELSA MicroLink 56K
  usbip: fix usbip bind writing random string after command in match_busid
  usbip: stub_rx: fix static checker warning on unnecessary checks
  usbip: prevent leaking socket pointer address in messages
  usbip: stub: stop printing kernel pointer addresses in messages
  usbip: vhci: stop printing kernel pointer addresses in messages
  USB: Fix off by one in type-specific length check of BOS SSP capability
  USB: serial: option: adding support for YUGA CLM920-NC5
  phy: rcar-gen3-usb2: select USB_COMMON
  phy: rockchip-typec: add pm_runtime_disable in err case
  phy: cpcap-usb: Fix platform_get_irq_byname's error checking.
  phy: tegra: fix device-tree node lookups
  USB: serial: qcserial: add Sierra Wireless EM7565
  USB: serial: option: add support for Telit ME910 PID 0x1101
  USB: chipidea: msm: fix ulpi-node lookup

6 years agoMAINTAINERS: mark arch/blackfin/ and its gubbins as orphaned
Adam Borowski [Mon, 25 Dec 2017 15:38:58 +0000 (16:38 +0100)]
MAINTAINERS: mark arch/blackfin/ and its gubbins as orphaned

The blackfin architecture has seen no maintainer action of any kind since
April 2015.  No new code, no pull requests, no acks to patches, no response
to mails, nothing.

The web site has an expired certificate (expiration Sep 2017, issued in
2013), the mailing list sees no answers either, with one exception:

  https://sourceforge.net/p/adi-buildroot/mailman/adi-buildroot-devel/
  >
  > Steven is no longer working on this for ADI. Acked by me if this works. Thanks.
  >
  > Best regards,
  > Aaron Wu
  > Analog Devices Inc.

But, Aaron doesn't seem to respond to queries either.

Signed-off-by: Adam Borowski <kilobyte@angband.pl>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc
Linus Torvalds [Sun, 31 Dec 2017 18:39:22 +0000 (10:39 -0800)]
Merge git://git./linux/kernel/git/davem/sparc

Pull sparc bugfix from David Miller.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  sparc64: repair calling incorrect hweight function from stubs

6 years agox86/ldt: Make LDT pgtable free conditional
Thomas Gleixner [Sun, 31 Dec 2017 15:52:15 +0000 (16:52 +0100)]
x86/ldt: Make LDT pgtable free conditional

Andy prefers to be paranoid about the pagetable free in the error path of
write_ldt(). Make it conditional and warn whenever the installment of a
secondary LDT fails.

Requested-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
6 years agox86/ldt: Plug memory leak in error path
Thomas Gleixner [Sun, 31 Dec 2017 10:24:34 +0000 (11:24 +0100)]
x86/ldt: Plug memory leak in error path

The error path in write_ldt() tries to free 'old_ldt' instead of the newly
allocated 'new_ldt', resulting in a memory leak. It also misses to clean up a
half populated LDT pagetable, which is not a leak as it gets cleaned up
when the process exits.

Free both the potentially half populated LDT pagetable and the newly
allocated LDT struct. This can be done unconditionally because once an LDT
is mapped subsequent maps will succeed, because the PTE page is already
populated and the two LDTs fit into that single page.

Reported-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linuxfoundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Fixes: f55f0501cbf6 ("x86/pti: Put the LDT in its own PGD if PTI is on")
Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1712311121340.1899@nanos
Signed-off-by: Ingo Molnar <mingo@kernel.org>
6 years agox86/mm: Remove preempt_disable/enable() from __native_flush_tlb()
Thomas Gleixner [Sat, 30 Dec 2017 21:13:54 +0000 (22:13 +0100)]
x86/mm: Remove preempt_disable/enable() from __native_flush_tlb()

The preempt_disable/enable() pair in __native_flush_tlb() was added in
commit:

  5cf0791da5c1 ("x86/mm: Disable preemption during CR3 read+write")

... to protect the UP variant of flush_tlb_mm_range().

That preempt_disable/enable() pair should have been added to the UP variant
of flush_tlb_mm_range() instead.

The UP variant was removed with commit:

  ce4a4e565f52 ("x86/mm: Remove the UP asm/tlbflush.h code, always use the (formerly) SMP code")

... but the preempt_disable/enable() pair stayed around.

The latest change to __native_flush_tlb() in commit:

  6fd166aae78c ("x86/mm: Use/Fix PCID to optimize user/kernel switches")

... added an access to a per CPU variable outside the preempt disabled
regions, which makes no sense at all. __native_flush_tlb() must always
be called with at least preemption disabled.

Remove the preempt_disable/enable() pair and add a WARN_ON_ONCE() to catch
bad callers independent of the smp_processor_id() debugging.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: <stable@vger.kernel.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linuxfoundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20171230211829.679325424@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
6 years agox86/smpboot: Remove stale TLB flush invocations
Thomas Gleixner [Sat, 30 Dec 2017 21:13:53 +0000 (22:13 +0100)]
x86/smpboot: Remove stale TLB flush invocations

smpboot_setup_warm_reset_vector() and smpboot_restore_warm_reset_vector()
invoke local_flush_tlb() for no obvious reason.

Digging in history revealed that the original code in the 2.1 era added
those because the code manipulated a swapper_pg_dir pagetable entry. The
pagetable manipulation was removed long ago in the 2.3 timeframe, but the
TLB flush invocations stayed around forever.

Remove them along with the pointless pr_debug()s which come from the same 2.1
change.

Reported-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: <stable@vger.kernel.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linuxfoundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20171230211829.586548655@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
6 years agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Sat, 30 Dec 2017 22:31:30 +0000 (14:31 -0800)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "Two simple fixes, both of which cause I/O hangs.

  The storvsc one is from the hyper-v which can hang under certain hot
  add/remove conditions and the other is generally, where removing a
  target and a device in close proximity can result in the release
  method being executed twice (and subsequent list and other corruption
  and an eventual panic)"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: storvsc: Fix scsi_cmd error assignments in storvsc_handle_error
  scsi: core: check for device state in __scsi_remove_target()

6 years agoobjtool: Fix seg fault with clang-compiled objects
Simon Ser [Sat, 30 Dec 2017 20:43:32 +0000 (14:43 -0600)]
objtool: Fix seg fault with clang-compiled objects

Fix a seg fault which happens when an input file provided to 'objtool
orc generate' doesn't have a '.shstrtab' section (for instance, object
files produced by clang don't have this section).

Signed-off-by: Simon Ser <contact@emersion.fr>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/c0f2231683e9bed40fac1f13ce2c33b8389854bc.1514666459.git.jpoimboe@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
6 years agoobjtool: Fix seg fault caused by missing parameter
Simon Ser [Sat, 30 Dec 2017 20:43:31 +0000 (14:43 -0600)]
objtool: Fix seg fault caused by missing parameter

Fix a seg fault when no parameter is provided to 'objtool orc'.

Signed-off-by: Simon Ser <contact@emersion.fr>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/9172803ec7ebb72535bcd0b7f966ae96d515968e.1514666459.git.jpoimboe@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
6 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
Linus Torvalds [Sat, 30 Dec 2017 18:16:51 +0000 (10:16 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jikos/hid

Pull HID fixes from Jiri Kosina:

 - two cosmetic fixes from Daniel Axtens and Hans de Goede

 - fix for I2C command mismatch fix for cp2112 driver from Eudean Sun

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
  HID: core: lower log level for unknown main item tags to warnings
  HID: holtekff: move MODULE_* parameters out of #ifdef block
  HID: cp2112: Fix I2C_BLOCK_DATA transactions

6 years agokbuild: add '-fno-stack-check' to kernel build options
Linus Torvalds [Sat, 30 Dec 2017 01:34:43 +0000 (17:34 -0800)]
kbuild: add '-fno-stack-check' to kernel build options

It appears that hardened gentoo enables "-fstack-check" by default for
gcc.

That doesn't work _at_all_ for the kernel, because the kernel stack
doesn't act like a user stack at all: it's much smaller, and it doesn't
auto-expand on use.  So the extra "probe one page below the stack" code
generated by -fstack-check just breaks the kernel in horrible ways,
causing infinite double faults etc.

[ I have to say, that the particular code gcc generates looks very
  stupid even for user space where it works, but that's a separate
  issue.  ]

Reported-and-tested-by: Alexander Tsoy <alexander@tsoy.me>
Reported-and-tested-by: Toralf Förster <toralf.foerster@gmx.de>
Cc: stable@kernel.org
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agoMerge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sat, 30 Dec 2017 01:02:49 +0000 (17:02 -0800)]
Merge branch 'x86-pti-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 page table isolation updates from Thomas Gleixner:
 "This is the final set of enabling page table isolation on x86:

   - Infrastructure patches for handling the extra page tables.

   - Patches which map the various bits and pieces which are required to
     get in and out of user space into the user space visible page
     tables.

   - The required changes to have CR3 switching in the entry/exit code.

   - Optimizations for the CR3 switching along with documentation how
     the ASID/PCID mechanism works.

   - Updates to dump pagetables to cover the user space page tables for
     W+X scans and extra debugfs files to analyze both the kernel and
     the user space visible page tables

  The whole functionality is compile time controlled via a config switch
  and can be turned on/off on the command line as well"

* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (32 commits)
  x86/ldt: Make the LDT mapping RO
  x86/mm/dump_pagetables: Allow dumping current pagetables
  x86/mm/dump_pagetables: Check user space page table for WX pages
  x86/mm/dump_pagetables: Add page table directory to the debugfs VFS hierarchy
  x86/mm/pti: Add Kconfig
  x86/dumpstack: Indicate in Oops whether PTI is configured and enabled
  x86/mm: Clarify the whole ASID/kernel PCID/user PCID naming
  x86/mm: Use INVPCID for __native_flush_tlb_single()
  x86/mm: Optimize RESTORE_CR3
  x86/mm: Use/Fix PCID to optimize user/kernel switches
  x86/mm: Abstract switching CR3
  x86/mm: Allow flushing for future ASID switches
  x86/pti: Map the vsyscall page if needed
  x86/pti: Put the LDT in its own PGD if PTI is on
  x86/mm/64: Make a full PGD-entry size hole in the memory map
  x86/events/intel/ds: Map debug buffers in cpu_entry_area
  x86/cpu_entry_area: Add debugstore entries to cpu_entry_area
  x86/mm/pti: Map ESPFIX into user space
  x86/mm/pti: Share entry text PMD
  x86/entry: Align entry text section to PMD boundary
  ...

6 years agotimerqueue: Document return values of timerqueue_add/del()
Thomas Gleixner [Fri, 22 Dec 2017 14:51:15 +0000 (15:51 +0100)]
timerqueue: Document return values of timerqueue_add/del()

The return values of timerqueue_add/del() are not documented in the kernel doc
comment. Add proper documentation.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Sebastian Siewior <bigeasy@linutronix.de>
Cc: rt@linutronix.de
Cc: Paul McKenney <paulmck@linux.vnet.ibm.com>
Cc: Anna-Maria Gleixner <anna-maria@linutronix.de>
Link: https://lkml.kernel.org/r/20171222145337.872681338@linutronix.de
6 years agotimers: Invoke timer_start_debug() where it makes sense
Thomas Gleixner [Fri, 22 Dec 2017 14:51:14 +0000 (15:51 +0100)]
timers: Invoke timer_start_debug() where it makes sense

The timer start debug function is called before the proper timer base is
set. As a consequence the trace data contains the stale CPU and flags
values.

Call the debug function after setting the new base and flags.

Fixes: 500462a9de65 ("timers: Switch to a non-cascading wheel")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Sebastian Siewior <bigeasy@linutronix.de>
Cc: stable@vger.kernel.org
Cc: rt@linutronix.de
Cc: Paul McKenney <paulmck@linux.vnet.ibm.com>
Cc: Anna-Maria Gleixner <anna-maria@linutronix.de>
Link: https://lkml.kernel.org/r/20171222145337.792907137@linutronix.de
6 years agonohz: Prevent a timer interrupt storm in tick_nohz_stop_sched_tick()
Thomas Gleixner [Fri, 22 Dec 2017 14:51:13 +0000 (15:51 +0100)]
nohz: Prevent a timer interrupt storm in tick_nohz_stop_sched_tick()

The conditions in irq_exit() to invoke tick_nohz_irq_exit() which
subsequently invokes tick_nohz_stop_sched_tick() are:

  if ((idle_cpu(cpu) && !need_resched()) || tick_nohz_full_cpu(cpu))

If need_resched() is not set, but a timer softirq is pending then this is
an indication that the softirq code punted and delegated the execution to
softirqd. need_resched() is not true because the current interrupted task
takes precedence over softirqd.

Invoking tick_nohz_irq_exit() in this case can cause an endless loop of
timer interrupts because the timer wheel contains an expired timer, but
softirqs are not yet executed. So it returns an immediate expiry request,
which causes the timer to fire immediately again. Lather, rinse and
repeat....

Prevent that by adding a check for a pending timer soft interrupt to the
conditions in tick_nohz_stop_sched_tick() which avoid calling
get_next_timer_interrupt(). That keeps the tick sched timer on the tick and
prevents a repetitive programming of an already expired timer.

Reported-by: Sebastian Siewior <bigeasy@linutronix.d>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paul McKenney <paulmck@linux.vnet.ibm.com>
Cc: Anna-Maria Gleixner <anna-maria@linutronix.de>
Cc: Sebastian Siewior <bigeasy@linutronix.de>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/alpine.DEB.2.20.1712272156050.2431@nanos
6 years agotimers: Reinitialize per cpu bases on hotplug
Thomas Gleixner [Wed, 27 Dec 2017 20:37:25 +0000 (21:37 +0100)]
timers: Reinitialize per cpu bases on hotplug

The timer wheel bases are not (re)initialized on CPU hotplug. That leaves
them with a potentially stale clk and next_expiry valuem, which can cause
trouble then the CPU is plugged.

Add a prepare callback which forwards the clock, sets next_expiry to far in
the future and reset the control flags to a known state.

Set base->must_forward_clk so the first timer which is queued will try to
forward the clock to current jiffies.

Fixes: 500462a9de65 ("timers: Switch to a non-cascading wheel")
Reported-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Sebastian Siewior <bigeasy@linutronix.de>
Cc: Anna-Maria Gleixner <anna-maria@linutronix.de>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/alpine.DEB.2.20.1712272152200.2431@nanos
6 years agotimers: Use deferrable base independent of base::nohz_active
Anna-Maria Gleixner [Fri, 22 Dec 2017 14:51:12 +0000 (15:51 +0100)]
timers: Use deferrable base independent of base::nohz_active

During boot and before base::nohz_active is set in the timer bases, deferrable
timers are enqueued into the standard timer base. This works correctly as
long as base::nohz_active is false.

Once it base::nohz_active is set and a timer which was enqueued before that
is accessed the lock selector code choses the lock of the deferred
base. This causes unlocked access to the standard base and in case the
timer is removed it does not clear the pending flag in the standard base
bitmap which causes get_next_timer_interrupt() to return bogus values.

To prevent that, the deferrable timers must be enqueued in the deferrable
base, even when base::nohz_active is not set. Those deferrable timers also
need to be expired unconditional.

Fixes: 500462a9de65 ("timers: Switch to a non-cascading wheel")
Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sebastian Siewior <bigeasy@linutronix.de>
Cc: stable@vger.kernel.org
Cc: rt@linutronix.de
Cc: Paul McKenney <paulmck@linux.vnet.ibm.com>
Link: https://lkml.kernel.org/r/20171222145337.633328378@linutronix.de
6 years agogenirq/msi, x86/vector: Prevent reservation mode for non maskable MSI
Thomas Gleixner [Fri, 29 Dec 2017 09:47:22 +0000 (10:47 +0100)]
genirq/msi, x86/vector: Prevent reservation mode for non maskable MSI

The new reservation mode for interrupts assigns a dummy vector when the
interrupt is allocated and assigns a real vector when the interrupt is
requested. The reservation mode prevents vector pressure when devices with
a large amount of queues/interrupts are initialized, but only a minimal
subset of those queues/interrupts is actually used.

This mode has an issue with MSI interrupts which cannot be masked. If the
driver is not careful or the hardware emits an interrupt before the device
irq is requestd by the driver then the interrupt ends up on the dummy
vector as a spurious interrupt which can cause malfunction of the device or
in the worst case a lockup of the machine.

Change the logic for the reservation mode so that the early activation of
MSI interrupts checks whether:

 - the device is a PCI/MSI device
 - the reservation mode of the underlying irqdomain is activated
 - PCI/MSI masking is globally enabled
 - the PCI/MSI device uses either MSI-X, which supports masking, or
   MSI with the maskbit supported.

If one of those conditions is false, then clear the reservation mode flag
in the irq data of the interrupt and invoke irq_domain_activate_irq() with
the reserve argument cleared. In the x86 vector code, clear the can_reserve
flag in the vector allocation data so a subsequent free_irq() won't create
the same situation again. The interrupt stays assigned to a real vector
until pci_disable_msi() is invoked and all allocations are undone.

Fixes: 4900be83602b ("x86/vector/msi: Switch to global reservation mode")
Reported-by: Alexandru Chirvasitu <achirvasub@gmail.com>
Reported-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Alexandru Chirvasitu <achirvasub@gmail.com>
Tested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Dou Liyang <douly.fnst@cn.fujitsu.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: Mikael Pettersson <mikpelinux@gmail.com>
Cc: Josh Poulson <jopoulso@microsoft.com>
Cc: Mihai Costache <v-micos@microsoft.com>
Cc: Stephen Hemminger <sthemmin@microsoft.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: linux-pci@vger.kernel.org
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Dexuan Cui <decui@microsoft.com>
Cc: Simon Xiao <sixiao@microsoft.com>
Cc: Saeed Mahameed <saeedm@mellanox.com>
Cc: Jork Loeser <Jork.Loeser@microsoft.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: devel@linuxdriverproject.org
Cc: KY Srinivasan <kys@microsoft.com>
Cc: Alan Cox <alan@linux.intel.com>
Cc: Sakari Ailus <sakari.ailus@intel.com>,
Cc: linux-media@vger.kernel.org
Link: https://lkml.kernel.org/r/alpine.DEB.2.20.1712291406420.1899@nanos
Link: https://lkml.kernel.org/r/alpine.DEB.2.20.1712291409460.1899@nanos
6 years agogenirq/irqdomain: Rename early argument of irq_domain_activate_irq()
Thomas Gleixner [Fri, 29 Dec 2017 15:59:06 +0000 (16:59 +0100)]
genirq/irqdomain: Rename early argument of irq_domain_activate_irq()

The 'early' argument of irq_domain_activate_irq() is actually used to
denote reservation mode. To avoid confusion, rename it before abuse
happens.

No functional change.

Fixes: 72491643469a ("genirq/irqdomain: Update irq_domain_ops.activate() signature")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Alexandru Chirvasitu <achirvasub@gmail.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Dou Liyang <douly.fnst@cn.fujitsu.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: Mikael Pettersson <mikpelinux@gmail.com>
Cc: Josh Poulson <jopoulso@microsoft.com>
Cc: Mihai Costache <v-micos@microsoft.com>
Cc: Stephen Hemminger <sthemmin@microsoft.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: linux-pci@vger.kernel.org
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Dexuan Cui <decui@microsoft.com>
Cc: Simon Xiao <sixiao@microsoft.com>
Cc: Saeed Mahameed <saeedm@mellanox.com>
Cc: Jork Loeser <Jork.Loeser@microsoft.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: devel@linuxdriverproject.org
Cc: KY Srinivasan <kys@microsoft.com>
Cc: Alan Cox <alan@linux.intel.com>
Cc: Sakari Ailus <sakari.ailus@intel.com>,
Cc: linux-media@vger.kernel.org
6 years agox86/vector: Use IRQD_CAN_RESERVE flag
Thomas Gleixner [Fri, 29 Dec 2017 15:57:00 +0000 (16:57 +0100)]
x86/vector: Use IRQD_CAN_RESERVE flag

Set the new CAN_RESERVE flag when the initial reservation for an interrupt
happens. The flag is used in a subsequent patch to disable reservation mode
for a certain class of MSI devices.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Alexandru Chirvasitu <achirvasub@gmail.com>
Tested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Dou Liyang <douly.fnst@cn.fujitsu.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: Mikael Pettersson <mikpelinux@gmail.com>
Cc: Josh Poulson <jopoulso@microsoft.com>
Cc: Mihai Costache <v-micos@microsoft.com>
Cc: Stephen Hemminger <sthemmin@microsoft.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: linux-pci@vger.kernel.org
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Dexuan Cui <decui@microsoft.com>
Cc: Simon Xiao <sixiao@microsoft.com>
Cc: Saeed Mahameed <saeedm@mellanox.com>
Cc: Jork Loeser <Jork.Loeser@microsoft.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: devel@linuxdriverproject.org
Cc: KY Srinivasan <kys@microsoft.com>
Cc: Alan Cox <alan@linux.intel.com>
Cc: Sakari Ailus <sakari.ailus@intel.com>,
Cc: linux-media@vger.kernel.org
6 years agogenirq: Introduce IRQD_CAN_RESERVE flag
Thomas Gleixner [Fri, 29 Dec 2017 15:44:34 +0000 (16:44 +0100)]
genirq: Introduce IRQD_CAN_RESERVE flag

Add a new flag to mark interrupts which can use reservation mode. This is
going to be used in subsequent patches to disable reservation mode for a
certain class of MSI devices.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Alexandru Chirvasitu <achirvasub@gmail.com>
Tested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Dou Liyang <douly.fnst@cn.fujitsu.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: Mikael Pettersson <mikpelinux@gmail.com>
Cc: Josh Poulson <jopoulso@microsoft.com>
Cc: Mihai Costache <v-micos@microsoft.com>
Cc: Stephen Hemminger <sthemmin@microsoft.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: linux-pci@vger.kernel.org
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Dexuan Cui <decui@microsoft.com>
Cc: Simon Xiao <sixiao@microsoft.com>
Cc: Saeed Mahameed <saeedm@mellanox.com>
Cc: Jork Loeser <Jork.Loeser@microsoft.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: devel@linuxdriverproject.org
Cc: KY Srinivasan <kys@microsoft.com>
Cc: Alan Cox <alan@linux.intel.com>
Cc: Sakari Ailus <sakari.ailus@intel.com>,
Cc: linux-media@vger.kernel.org
6 years agogenirq/msi: Handle reactivation only on success
Thomas Gleixner [Fri, 29 Dec 2017 09:42:10 +0000 (10:42 +0100)]
genirq/msi: Handle reactivation only on success

When analyzing the fallout of the x86 vector allocation rework it turned
out that the error handling in msi_domain_alloc_irqs() is broken.

If MSI_FLAG_MUST_REACTIVATE is set for a MSI domain then it clears the
activation flag for a successfully initialized msi descriptor. If a
subsequent initialization fails then the error handling code path does not
deactivate the interrupt because the activation flag got cleared.

Move the clearing of the activation flag outside of the initialization loop
so that an eventual failure can be cleaned up correctly.

Fixes: 22d0b12f3560 ("genirq/irqdomain: Add force reactivation flag to irq domains")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Alexandru Chirvasitu <achirvasub@gmail.com>
Tested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Dou Liyang <douly.fnst@cn.fujitsu.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: Mikael Pettersson <mikpelinux@gmail.com>
Cc: Josh Poulson <jopoulso@microsoft.com>
Cc: Mihai Costache <v-micos@microsoft.com>
Cc: Stephen Hemminger <sthemmin@microsoft.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: linux-pci@vger.kernel.org
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Dexuan Cui <decui@microsoft.com>
Cc: Simon Xiao <sixiao@microsoft.com>
Cc: Saeed Mahameed <saeedm@mellanox.com>
Cc: Jork Loeser <Jork.Loeser@microsoft.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: devel@linuxdriverproject.org
Cc: KY Srinivasan <kys@microsoft.com>
Cc: Alan Cox <alan@linux.intel.com>
Cc: Sakari Ailus <sakari.ailus@intel.com>,
Cc: linux-media@vger.kernel.org
6 years agomedia: imx: fix breakages when compiling for arm
Mauro Carvalho Chehab [Fri, 29 Dec 2017 19:55:41 +0000 (14:55 -0500)]
media: imx: fix breakages when compiling for arm

As reported:

   drivers/staging/media/imx/imx-media-dev.c: In function 'find_async_subdev':
>> drivers/staging/media/imx/imx-media-dev.c:55:49: error: request for member 'name' in something not a structure or union
       if (devname && !strcmp(asd->match.device_name.name,
                                                    ^
   drivers/staging/media/imx/imx-media-dev.c: In function 'imx_media_add_async_subdev':
   drivers/staging/media/imx/imx-media-dev.c:110:25: error: request for member 'name' in something not a structure or union
      asd->match.device_name.name = devname;
                            ^

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agoMerge tag 'pm-4.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Linus Torvalds [Fri, 29 Dec 2017 19:54:15 +0000 (11:54 -0800)]
Merge tag 'pm-4.15-rc6' of git://git./linux/kernel/git/rafael/linux-pm

Pull power management fix from Rafael Wysocki:
 "This fixes a schedutil cpufreq governor regression from the 4.14 cycle
  that may cause a CPU idleness check to return incorrect results in
  some cases which leads to suboptimal decisions (Joel Fernandes)"

* tag 'pm-4.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpufreq: schedutil: Use idle_calls counter of the remote CPU

6 years agogpio: brcmstb: Make really use of the new lockdep class
Thomas Gleixner [Fri, 29 Dec 2017 15:29:15 +0000 (16:29 +0100)]
gpio: brcmstb: Make really use of the new lockdep class

The recent extension of irq_set_lockdep_class() with a second argument
added the new lockdep class to the mrcmstb driver, but used the already
existing lockdep class as second argument, which leaves the new lockdep
class defined but unused.

Use the new lockdep class as that's what the change intended to do.

Fixes: 39c3fd58952d ("kernel/irq: Extend lockdep class for request mutex")
Reported-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: linus.walleij@linaro.org
6 years agomedia: v4l: Fix references in Intel IPU3 Bayer documentation
Sakari Ailus [Fri, 29 Dec 2017 12:59:13 +0000 (07:59 -0500)]
media: v4l: Fix references in Intel IPU3 Bayer documentation

The references in Intel IPU3 Bayer format documentation were wrong. Fix
them.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: dmx.h documentation: fix a warning
Mauro Carvalho Chehab [Fri, 29 Dec 2017 13:34:11 +0000 (08:34 -0500)]
media: dmx.h documentation: fix a warning

/devel/v4l/patchwork/Documentation/output/dmx.h.rst:6: WARNING: undefined label: dmx_dqbuf (if the link has no caption the label must precede a section header)

This is defined together with DMX_QBUF.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: dvb kAPI docs: document dvb_vb2.h
Mauro Carvalho Chehab [Fri, 29 Dec 2017 13:23:41 +0000 (08:23 -0500)]
media: dvb kAPI docs: document dvb_vb2.h

Document the data structures and functions inside this kAPI header.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agox86/apic: Switch all APICs to Fixed delivery mode
Thomas Gleixner [Thu, 28 Dec 2017 10:33:33 +0000 (11:33 +0100)]
x86/apic: Switch all APICs to Fixed delivery mode

Some of the APIC incarnations are operating in lowest priority delivery
mode. This worked as long as the vector management code allocated the same
vector on all possible CPUs for each interrupt.

Lowest priority delivery mode does not necessarily respect the affinity
setting and may redirect to some other online CPU. This was documented
somewhere in the old code and the conversion to single target delivery
missed to update the delivery mode of the affected APIC drivers which
results in spurious interrupts on some of the affected CPU/Chipset
combinations.

Switch the APIC drivers over to Fixed delivery mode and remove all
leftovers of lowest priority delivery mode.

Switching to Fixed delivery mode is not a problem on these CPUs because the
kernel already uses Fixed delivery mode for IPIs. The reason for this is
that th SDM explicitely forbids lowest prio mode for IPIs. The reason is
obvious: If the irq routing does not honor destination targets in lowest
prio mode then an IPI targeted at CPU1 might end up on CPU0, which would be
a fatal problem in many cases.

As a consequence of this change, the apic::irq_delivery_mode field is now
pointless, but this needs to be cleaned up in a separate patch.

Fixes: fdba46ffb4c2 ("x86/apic: Get rid of multi CPU affinity")
Reported-by: vcaputo@pengaru.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: vcaputo@pengaru.com
Cc: Pavel Machek <pavel@ucw.cz>
Link: https://lkml.kernel.org/r/alpine.DEB.2.20.1712281140440.1688@nanos
6 years agomedia: dvb_vb2: get rid of DVB_BUF_TYPE_OUTPUT
Mauro Carvalho Chehab [Fri, 29 Dec 2017 12:54:12 +0000 (07:54 -0500)]
media: dvb_vb2: get rid of DVB_BUF_TYPE_OUTPUT

This is currently unused. So, get rid of it.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: dvb_vb2: use strlcpy instead of strncpy
Mauro Carvalho Chehab [Fri, 29 Dec 2017 12:53:30 +0000 (07:53 -0500)]
media: dvb_vb2: use strlcpy instead of strncpy

Instead of using strncpy(), use strlcpy(), in order to
ensure that a \0 char will be added at the end of the
string.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: v4l2-async: better describe match union at async match struct
Mauro Carvalho Chehab [Wed, 27 Sep 2017 15:43:00 +0000 (11:43 -0400)]
media: v4l2-async: better describe match union at async match struct

Now that kernel-doc handles nested unions, better document the
match union at struct v4l2_async_subdev.

Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: v4l2-async: simplify v4l2_async_subdev structure
Mauro Carvalho Chehab [Wed, 27 Sep 2017 14:12:00 +0000 (10:12 -0400)]
media: v4l2-async: simplify v4l2_async_subdev structure

The V4L2_ASYNC_MATCH_FWNODE match criteria requires just one
struct to be filled (struct fwnode_handle). The V4L2_ASYNC_MATCH_DEVNAME
match criteria requires just a device name.

So, it doesn't make sense to enclose those into structs,
as the criteria can go directly into the union.

That makes easier to document it, as we don't need to document
weird senseless structs.

At drivers, this makes even clearer about the match criteria.

Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Benoit Parrot <bparrot@ti.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Hyun Kwon <hyun.kwon@xilinx.com>
Acked-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: v4l2-device.h: document helper macros
Mauro Carvalho Chehab [Fri, 22 Sep 2017 16:31:02 +0000 (12:31 -0400)]
media: v4l2-device.h: document helper macros

There are several macros that aren't documented using kernel-docs
markups.

Document them.

While here, add cross-references to structs on this file.

Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: intel-ipu3: cio2: add new MIPI-CSI2 driver
Yong Zhi [Thu, 9 Nov 2017 00:30:38 +0000 (19:30 -0500)]
media: intel-ipu3: cio2: add new MIPI-CSI2 driver

This patch adds CIO2 CSI-2 device driver for
Intel's IPU3 camera sub-system support.

Signed-off-by: Yong Zhi <yong.zhi@intel.com>
Signed-off-by: Hyungwoo Yang <hyungwoo.yang@intel.com>
Signed-off-by: Rajmohan Mani <rajmohan.mani@intel.com>
Signed-off-by: Vijaykumar Ramya <ramya.vijaykumar@intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: doc-rst: add IPU3 raw10 bayer pixel format definitions
Yong Zhi [Thu, 9 Nov 2017 00:30:37 +0000 (19:30 -0500)]
media: doc-rst: add IPU3 raw10 bayer pixel format definitions

The formats added by this patch are:

    V4L2_PIX_FMT_IPU3_SBGGR10
    V4L2_PIX_FMT_IPU3_SGBRG10
    V4L2_PIX_FMT_IPU3_SGRBG10
    V4L2_PIX_FMT_IPU3_SRGGB10

Signed-off-by: Hyungwoo Yang <hyungwoo.yang@intel.com>
Signed-off-by: Yong Zhi <yong.zhi@intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: videodev2.h, v4l2-ioctl: add IPU3 raw10 color format
Yong Zhi [Thu, 9 Nov 2017 00:30:36 +0000 (19:30 -0500)]
media: videodev2.h, v4l2-ioctl: add IPU3 raw10 color format

Add IPU3 specific formats:

V4L2_PIX_FMT_IPU3_SBGGR10
V4L2_PIX_FMT_IPU3_SGBRG10
V4L2_PIX_FMT_IPU3_SGRBG10
V4L2_PIX_FMT_IPU3_SRGGB10

Signed-off-by: Yong Zhi <yong.zhi@intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: i2c: as3645a: Remove driver
Sakari Ailus [Fri, 8 Sep 2017 13:47:26 +0000 (09:47 -0400)]
media: i2c: as3645a: Remove driver

Remove the V4L2 AS3645A sub-device driver in favour of the LED flash class
driver for the same hardware, drivers/leds/leds-as3645a.c. The latter uses
the V4L2 flash LED class framework to provide V4L2 sub-device interface.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: staging: atomisp: Fix DMI matching entry for MRD7
Andy Shevchenko [Tue, 19 Dec 2017 20:59:57 +0000 (15:59 -0500)]
media: staging: atomisp: Fix DMI matching entry for MRD7

MRD7 board has in particular

Base Board Information
Manufacturer: Intel Corp.
Product Name: TABLET
Version: MRD 7

Fix the DMI matching entry for it.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: staging: atomisp: Use standard DMI match table
Andy Shevchenko [Tue, 19 Dec 2017 20:59:56 +0000 (15:59 -0500)]
media: staging: atomisp: Use standard DMI match table

The traditional pattern is to use DMI matching table and provide a
corresponding driver_data in it.

Convert driver to use DMI matching table.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: staging: atomisp: Unexport local function
Andy Shevchenko [Tue, 19 Dec 2017 20:59:55 +0000 (15:59 -0500)]
media: staging: atomisp: Unexport local function

There is no need to export function which is only used once in
the same module where it's defined.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: staging: atomisp: Remove redundant PCI code
Andy Shevchenko [Tue, 19 Dec 2017 20:59:54 +0000 (15:59 -0500)]
media: staging: atomisp: Remove redundant PCI code

There is no need to keep a reference to PCI root bridge.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: staging: atomisp: Switch to use struct device_driver directly
Andy Shevchenko [Tue, 19 Dec 2017 20:59:53 +0000 (15:59 -0500)]
media: staging: atomisp: Switch to use struct device_driver directly

In a preparation of split PCI glue driver from core part, convert
the driver to use more generic struct device_driver.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: staging: atomisp: Remove non-ACPI leftovers
Andy Shevchenko [Tue, 19 Dec 2017 20:59:52 +0000 (15:59 -0500)]
media: staging: atomisp: Remove non-ACPI leftovers

Since all drivers are solely requiring ACPI enumeration, there is no
need to additionally check for legacy platform data or ACPI handle.

Remove leftovers from the sensors and platform code.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: staging: atomisp: Disable custom format for now
Andy Shevchenko [Tue, 19 Dec 2017 20:59:51 +0000 (15:59 -0500)]
media: staging: atomisp: Disable custom format for now

Custom video format 'M101' is not supported in upstream and as a result
user will get ugly warning:

 Unknown pixelformat 0x3130314d
 ------------[ cut here ]------------
 WARNING: CPU: 3 PID: 1574 at drivers/media/v4l2-core/v4l2-ioctl.c:1291 v4l_enum_fmt+0xcf1/0x13a0 [videodev]

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: staging: atomisp: lm3554: Fix control values
Andy Shevchenko [Tue, 19 Dec 2017 20:59:50 +0000 (15:59 -0500)]
media: staging: atomisp: lm3554: Fix control values

Driver fails to initialize due to insane settings in the
control init array.

Fix this by moving to sanity.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: staging: atomisp: Remove duplicate NULL-check
Andy Shevchenko [Tue, 19 Dec 2017 20:59:49 +0000 (15:59 -0500)]
media: staging: atomisp: Remove duplicate NULL-check

GPIO framework checks for NULL pointer when gpiod_set_value() is called.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: staging: atomisp: Don't leak GPIO resources if clk_get() failed
Andy Shevchenko [Tue, 19 Dec 2017 20:59:48 +0000 (15:59 -0500)]
media: staging: atomisp: Don't leak GPIO resources if clk_get() failed

In case devm_clk_get() call fails the previously requested GPIOs are
left requested.

Fix this by moving GPIO request code after devm_clk_get() call.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: staging: atomisp2: replace DEVICE_ATTR with DEVICE_ATTR_RO
Aishwarya Pant [Mon, 11 Dec 2017 17:23:57 +0000 (12:23 -0500)]
media: staging: atomisp2: replace DEVICE_ATTR with DEVICE_ATTR_RO

This is a clean-up patch which replaces DEVICE_ATTR() macro with file
permission specific DEVICE_ATTR_RO() macro for compaction and
readability.

Done using coccinelle:

@r@
identifier attr, show_fn;
declarer name DEVICE_ATTR;
@@

DEVICE_ATTR(attr, \(S_IRUGO\|0444\), show_fn, NULL);

@script: python p@
attr_show;
attr << r.attr;
@@

// standardise the show fn name to {attr}_show
coccinelle.attr_show = attr + "_show"

@@
identifier r.attr, r.show_fn;
declarer name DEVICE_ATTR_RO;
@@

// change the attr declaration
- DEVICE_ATTR(attr, \(S_IRUGO\|0444\), show_fn, NULL);
+ DEVICE_ATTR_RO(attr);

@rr@
identifier r.show_fn, p.attr_show;
@@

// rename the show function
- show_fn
+ attr_show
(...) {
...
  }

@depends on rr@
identifier r.show_fn, p.attr_show;
@@

// rename fn usages
- show_fun
+ attr_show

Signed-off-by: Aishwarya Pant <aishpant@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: Staging: media: atomisp: made function static
Sergiy Redko [Wed, 13 Dec 2017 10:54:33 +0000 (05:54 -0500)]
media: Staging: media: atomisp: made function static

Fixed sparse warning by making 'dtrace_dot' function static.

Signed-off-by: Sergiy Redko <sergredko@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: staging: fix indentation in atomisp-ov5693
Riccardo Schirone [Tue, 28 Nov 2017 20:40:04 +0000 (15:40 -0500)]
media: staging: fix indentation in atomisp-ov5693

Fix "suspect code indent for conditional statements" checkpatch issue

Signed-off-by: Riccardo Schirone <sirmy15@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: staging: improves comparisons readability in atomisp-ov5693
Riccardo Schirone [Tue, 28 Nov 2017 20:40:03 +0000 (15:40 -0500)]
media: staging: improves comparisons readability in atomisp-ov5693

Fix "Comparisons should place the constant on the right side of the
test" checkpatch issue.

Signed-off-by: Riccardo Schirone <sirmy15@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: staging: improve comments usage in atomisp-ov5693
Riccardo Schirone [Tue, 28 Nov 2017 20:40:02 +0000 (15:40 -0500)]
media: staging: improve comments usage in atomisp-ov5693

- Fix "Block comments use a trailing */ on a separate line" checkpatch
  issue
- Fix "Block comments use * on subsequent lines" checkpatch issue

Signed-off-by: Riccardo Schirone <sirmy15@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: staging: add missing blank line after declarations in atomisp-ov5693
Riccardo Schirone [Tue, 28 Nov 2017 20:40:01 +0000 (15:40 -0500)]
media: staging: add missing blank line after declarations in atomisp-ov5693

Fix "Missing a blank line after declarations" warning reported by
checkpatch.

Signed-off-by: Riccardo Schirone <sirmy15@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: atomisp: deprecate pci_get_bus_and_slot()
Sinan Kaya [Mon, 27 Nov 2017 16:57:59 +0000 (11:57 -0500)]
media: atomisp: deprecate pci_get_bus_and_slot()

pci_get_bus_and_slot() is restrictive such that it assumes domain=0 as
where a PCI device is present. This restricts the device drivers to be
reused for other domain numbers.

Getting ready to remove pci_get_bus_and_slot() function. Since ISP always
uses domain 0, hard-code it in the code when calling the replacement
function pci_get_domain_bus_and_slot().

Signed-off-by: Sinan Kaya <okaya@codeaurora.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: staging: atomisp: convert timestamps to ktime_t
Arnd Bergmann [Mon, 27 Nov 2017 15:21:41 +0000 (10:21 -0500)]
media: staging: atomisp: convert timestamps to ktime_t

timespec overflows in 2038 on 32-bit architectures, and the
getnstimeofday() suffers from possible time jumps, so the
timestamps here are better done using ktime_get(), which has
neither of those problems.

In case of ov2680, we don't seem to use the timestamp at
all, so I just remove it.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: staging: atomisp: fixes for "symbol was not declared. Should it be static...
Jeremy Sowden [Tue, 28 Nov 2017 10:27:26 +0000 (05:27 -0500)]
media: staging: atomisp: fixes for "symbol was not declared. Should it be static?" sparse warnings

Defined some const arrays as static since they don't need external linkage.

Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: staging: atomisp: fix for sparse "using plain integer as NULL pointer" warnings
Jeremy Sowden [Tue, 28 Nov 2017 10:27:25 +0000 (05:27 -0500)]
media: staging: atomisp: fix for sparse "using plain integer as NULL pointer" warnings

The "address" member of struct ia_css_host_data is a pointer-to-char,
so define default as NULL.

Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Fri, 29 Dec 2017 07:20:21 +0000 (23:20 -0800)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) IPv6 gre tunnels end up with different default features enabled
    depending upon whether netlink or ioctls are used to bring them up.
    Fix from Alexey Kodanev.

 2) Fix read past end of user control message in RDS< from Avinash
    Repaka.

 3) Missing RCU barrier in mini qdisc code, from Cong Wang.

 4) Missing policy put when reusing per-cpu route entries, from Florian
    Westphal.

 5) Handle nested PCI errors properly in bnx2x driver, from Guilherme G.
    Piccoli.

 6) Run nested transport mode IPSEC packets via tasklet, from Herbert
    Xu.

 7) Fix handling poll() for stream sockets in tipc, from Parthasarathy
    Bhuvaragan.

 8) Fix two stack-out-of-bounds issues in IPSEC, from Steffen Klassert.

 9) Another zerocopy ubuf handling fix, from Willem de Bruijn.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (33 commits)
  strparser: Call sock_owned_by_user_nocheck
  sock: Add sock_owned_by_user_nocheck
  skbuff: in skb_copy_ubufs unclone before releasing zerocopy
  tipc: fix hanging poll() for stream sockets
  sctp: Replace use of sockets_allocated with specified macro.
  bnx2x: Improve reliability in case of nested PCI errors
  tg3: Enable PHY reset in MTU change path for 5720
  tg3: Add workaround to restrict 5762 MRRS to 2048
  tg3: Update copyright
  net: fec: unmap the xmit buffer that are not transferred by DMA
  tipc: fix tipc_mon_delete() oops in tipc_enable_bearer() error path
  tipc: error path leak fixes in tipc_enable_bearer()
  RDS: Check cmsg_len before dereferencing CMSG_DATA
  tcp: Avoid preprocessor directives in tracepoint macro args
  tipc: fix memory leak of group member when peer node is lost
  net: sched: fix possible null pointer deref in tcf_block_put
  tipc: base group replicast ack counter on number of actual receivers
  net_sched: fix a missing rcu barrier in mini_qdisc_pair_swap()
  net: phy: micrel: ksz9031: reconfigure autoneg after phy autoneg workaround
  ip6_gre: fix device features for ioctl setup
  ...

6 years agoMerge tag 'drm-fixes-for-v4.15-rc6' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Fri, 29 Dec 2017 07:16:24 +0000 (23:16 -0800)]
Merge tag 'drm-fixes-for-v4.15-rc6' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "nouveau and i915 regression fixes"

* tag 'drm-fixes-for-v4.15-rc6' of git://people.freedesktop.org/~airlied/linux:
  drm/nouveau: fix race when adding delayed work items
  i915: Reject CCS modifiers for pipe C on Geminilake
  drm/i915/gvt: Fix pipe A enable as default for vgpu

6 years agoMerge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 29 Dec 2017 07:14:47 +0000 (23:14 -0800)]
Merge tag 'clk-fixes-for-linus' of git://git./linux/kernel/git/clk/linux

Pull clk fix from Stephen Boyd:
 "One more fix for the runtime PM clk patches. We're calling a runtime
  PM API that may schedule from somewhere that we can't do that. We
  change to the async version of pm_runtime_put() to fix it"

* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  clk: use atomic runtime pm api in clk_core_is_enabled

6 years agoMerge tag 'led_fixes_for_4.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 29 Dec 2017 07:09:45 +0000 (23:09 -0800)]
Merge tag 'led_fixes_for_4.15-rc6' of git://git./linux/kernel/git/j.anaszewski/linux-leds

Pull LED fix from Jacek Anaszewski:
 "A single LED fix for brightness setting when delay_off is 0"

* tag 'led_fixes_for_4.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds:
  led: core: Fix brightness setting when setting delay_off=0

6 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Linus Torvalds [Fri, 29 Dec 2017 07:06:01 +0000 (23:06 -0800)]
Merge tag 'for-linus' of git://git./linux/kernel/git/rdma/rdma

Pull rdma fixes from Jason Gunthorpe:
 "This is the next batch of for-rc patches from RDMA. It includes the
  fix for the ipoib regression I mentioned last time, and the result of
  a fairly major debugging effort to get iser working reliably on cxgb4
  hardware - it turns out the cxgb4 driver was not handling QP error
  flushing properly causing iser to fail.

   - cxgb4 fix for an iser testing failure as debugged by Steve and
     Sagi. The problem was a driver bug in the handling of shutting down
     a QP.

   - Various vmw_pvrdma fixes for bogus WARN_ON, missed resource free on
     error unwind and a use after free bug

   - Improper congestion counter values on mlx5 when link aggregation is
     enabled

   - ipoib lockdep regression introduced in this merge window

   - hfi1 regression supporting the device in a VM introduced in a
     recent patch

   - Typo that breaks future uAPI compatibility in the verbs core

   - More SELinux related oops fixing

   - Fix an oops during error unwind in mlx5"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
  IB/mlx5: Fix mlx5_ib_alloc_mr error flow
  IB/core: Verify that QP is security enabled in create and destroy
  IB/uverbs: Fix command checking as part of ib_uverbs_ex_modify_qp()
  IB/mlx5: Serialize access to the VMA list
  IB/hfi: Only read capability registers if the capability exists
  IB/ipoib: Fix lockdep issue found on ipoib_ib_dev_heavy_flush
  IB/mlx5: Fix congestion counters in LAG mode
  RDMA/vmw_pvrdma: Avoid use after free due to QP/CQ/SRQ destroy
  RDMA/vmw_pvrdma: Use refcount_dec_and_test to avoid warning
  RDMA/vmw_pvrdma: Call ib_umem_release on destroy QP path
  iw_cxgb4: when flushing, complete all wrs in a chain
  iw_cxgb4: reflect the original WR opcode in drain cqes
  iw_cxgb4: Only validate the MSN for successful completions

6 years agoMerge branch 'strparser-Fix-lockdep-issue'
David S. Miller [Thu, 28 Dec 2017 19:28:23 +0000 (14:28 -0500)]
Merge branch 'strparser-Fix-lockdep-issue'

Tom Herbert says:

====================
strparser: Fix lockdep issue

When sock_owned_by_user returns true in strparser. Fix is to add and
call sock_owned_by_user_nocheck since the check for owned by user is
not an error condition in this case.
====================

Fixes: 43a0c6751a322847 ("strparser: Stream parser for messages")
Reported-by: syzbot <syzkaller@googlegroups.com>
Reported-and-tested-by: <syzbot+c91c53af67f9ebe599a337d2e70950366153b295@syzkaller.appspotmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agostrparser: Call sock_owned_by_user_nocheck
Tom Herbert [Thu, 28 Dec 2017 19:00:44 +0000 (11:00 -0800)]
strparser: Call sock_owned_by_user_nocheck

strparser wants to check socket ownership without producing any
warnings. As indicated by the comment in the code, it is permissible
for owned_by_user to return true.

Fixes: 43a0c6751a322847 ("strparser: Stream parser for messages")
Reported-by: syzbot <syzkaller@googlegroups.com>
Reported-and-tested-by: <syzbot+c91c53af67f9ebe599a337d2e70950366153b295@syzkaller.appspotmail.com>
Signed-off-by: Tom Herbert <tom@quantonium.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agosock: Add sock_owned_by_user_nocheck
Tom Herbert [Thu, 28 Dec 2017 19:00:43 +0000 (11:00 -0800)]
sock: Add sock_owned_by_user_nocheck

This allows checking socket lock ownership with producing lockdep
warnings.

Signed-off-by: Tom Herbert <tom@quantonium.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoskbuff: in skb_copy_ubufs unclone before releasing zerocopy
Willem de Bruijn [Thu, 28 Dec 2017 17:38:13 +0000 (12:38 -0500)]
skbuff: in skb_copy_ubufs unclone before releasing zerocopy

skb_copy_ubufs must unclone before it is safe to modify its
skb_shared_info with skb_zcopy_clear.

Commit b90ddd568792 ("skbuff: skb_copy_ubufs must release uarg even
without user frags") ensures that all skbs release their zerocopy
state, even those without frags.

But I forgot an edge case where such an skb arrives that is cloned.

The stack does not build such packets. Vhost/tun skbs have their
frags orphaned before cloning. TCP skbs only attach zerocopy state
when a frag is added.

But if TCP packets can be trimmed or linearized, this might occur.
Tracing the code I found no instance so far (e.g., skb_linearize
ends up calling skb_zcopy_clear if !skb->data_len).

Still, it is non-obvious that no path exists. And it is fragile to
rely on this.

Fixes: b90ddd568792 ("skbuff: skb_copy_ubufs must release uarg even without user frags")
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agomedia: fix semicolon.cocci warnings
Fengguang Wu [Thu, 28 Dec 2017 17:26:20 +0000 (12:26 -0500)]
media: fix semicolon.cocci warnings

drivers/media/common/videobuf/videobuf2-core.c:2525:34-35: Unneeded semicolon

 Remove unneeded semicolon.

Generated by: scripts/coccinelle/misc/semicolon.cocci

Fixes: 03fbdb2fc2b8 ("media: move videobuf2 to drivers/media/common")
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
6 years agomedia: don't include drivers/media/i2c at cflags
Mauro Carvalho Chehab [Thu, 28 Dec 2017 19:06:30 +0000 (14:06 -0500)]
media: don't include drivers/media/i2c at cflags

Most of the I2C headers got moved a long time ago to
include/media/i2c. Stop including them at the patch.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: move dvb kAPI headers to include/media
Mauro Carvalho Chehab [Thu, 28 Dec 2017 18:03:51 +0000 (13:03 -0500)]
media: move dvb kAPI headers to include/media

Except for DVB, all media kAPI headers are at include/media.

Move the headers to it.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agotipc: fix hanging poll() for stream sockets
Parthasarathy Bhuvaragan [Thu, 28 Dec 2017 11:03:06 +0000 (12:03 +0100)]
tipc: fix hanging poll() for stream sockets

In commit 42b531de17d2f6 ("tipc: Fix missing connection request
handling"), we replaced unconditional wakeup() with condtional
wakeup for clients with flags POLLIN | POLLRDNORM | POLLRDBAND.

This breaks the applications which do a connect followed by poll
with POLLOUT flag. These applications are not woken when the
connection is ESTABLISHED and hence sleep forever.

In this commit, we fix it by including the POLLOUT event for
sockets in TIPC_CONNECTING state.

Fixes: 42b531de17d2f6 ("tipc: Fix missing connection request handling")
Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: Parthasarathy Bhuvaragan <parthasarathy.bhuvaragan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agomedia: dvb-core: get rid of mmap reserved field
Mauro Carvalho Chehab [Thu, 21 Dec 2017 15:57:13 +0000 (10:57 -0500)]
media: dvb-core: get rid of mmap reserved field

The "reserved" field was a way, used at V4L2 API, to add new
data to existing structs without breaking userspace. However,
there are now clever ways of doing that, without needing to add
an uneeded overhead. So, get rid of them.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: dvb uAPI docs: document mmap-related ioctls
Mauro Carvalho Chehab [Thu, 21 Dec 2017 15:42:26 +0000 (10:42 -0500)]
media: dvb uAPI docs: document mmap-related ioctls

5 new ioctls were added to the DVB demux API, in order to
handle memory maped I/O. Add documentation for them.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: dvb uAPI docs: document demux mmap/munmap syscalls
Mauro Carvalho Chehab [Thu, 21 Dec 2017 14:35:52 +0000 (09:35 -0500)]
media: dvb uAPI docs: document demux mmap/munmap syscalls

With the new dmx mmap interface, those two syscalls are now
handled by the subsystem. Document them.

This patch is based on the V4L2 text for those ioctls.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: move videobuf2 to drivers/media/common
Mauro Carvalho Chehab [Thu, 21 Dec 2017 13:29:39 +0000 (08:29 -0500)]
media: move videobuf2 to drivers/media/common

Now that VB2 is used by both V4L2 and DVB core, move it to
the common part of the subsystem.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: dvb-core: make DVB mmap API optional
Mauro Carvalho Chehab [Thu, 28 Dec 2017 14:24:20 +0000 (09:24 -0500)]
media: dvb-core: make DVB mmap API optional

This API is still experimental. Make it optional, allowing to
compile the code without it.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agofs: compat_ioctl: add new DVB demux ioctls
Mauro Carvalho Chehab [Thu, 21 Dec 2017 16:00:35 +0000 (11:00 -0500)]
fs: compat_ioctl: add new DVB demux ioctls

Use trivial handling for the new DVB demux ioctls, as none
of them passes a pointer inside their structures.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: dvb_vb2: add SPDX headers
Mauro Carvalho Chehab [Thu, 21 Dec 2017 16:09:29 +0000 (11:09 -0500)]
media: dvb_vb2: add SPDX headers

This code is released under GPL. Add the corresponding SPDX
headers.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: dvb_vb2: Use the sanitized value after processed by VB2 core
Mauro Carvalho Chehab [Thu, 28 Dec 2017 14:03:21 +0000 (09:03 -0500)]
media: dvb_vb2: Use the sanitized value after processed by VB2 core

if the number of buffers requested by the user is too big, the
VB core will truncate to a valid value.

Use it, instead of what the user requested.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: dvb_vb2: limit reqbufs size to a sane value
Mauro Carvalho Chehab [Thu, 28 Dec 2017 12:11:40 +0000 (07:11 -0500)]
media: dvb_vb2: limit reqbufs size to a sane value

It is not a good idea to let users to request a very high buffer
size.

So, add an upper limit.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: dvb_vb2: fix a warning about streamoff logic
Mauro Carvalho Chehab [Thu, 21 Dec 2017 08:13:34 +0000 (03:13 -0500)]
media: dvb_vb2: fix a warning about streamoff logic

The streamoff logic is causing those warnings:

 WARNING: CPU: 3 PID: 3382 at drivers/media/v4l2-core/videobuf2-core.c:1652 __vb2_queue_cancel+0x177/0x250 [videobuf2_core]
 Modules linked in: bnep fuse xt_CHECKSUM iptable_mangle tun ebtable_filter ebtables ip6table_filter ip6_tables xt_physdev br_netfilter bluetooth bridge rfkill ecdh_generic stp llc nf_log_ipv4 nf_log_common xt_LOG xt_conntrack ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack libcrc32c sunrpc vfat fat snd_hda_codec_hdmi rc_dib0700_nec i915 rc_pinnacle_pctv_hd em28xx_rc a8293 ts2020 m88ds3103 i2c_mux em28xx_dvb dib8000 dvb_usb_dib0700 dib0070 dib7000m dib0090 dvb_usb dvb_core uvcvideo snd_usb_audio videobuf2_v4l2 dib3000mc videobuf2_vmalloc videobuf2_memops dibx000_common videobuf2_core rc_core snd_usbmidi_lib snd_rawmidi em28xx tveeprom v4l2_common videodev media intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp snd_hda_intel
 kvm_intel snd_hda_codec kvm snd_hwdep snd_hda_core snd_seq irqbypass crct10dif_pclmul crc32_pclmul i2c_algo_bit ghash_clmulni_intel snd_seq_device drm_kms_helper snd_pcm intel_cstate intel_uncore snd_timer tpm_tis drm mei_wdt iTCO_wdt iTCO_vendor_support tpm_tis_core snd intel_rapl_perf mei_me mei tpm i2c_i801 soundcore lpc_ich video binfmt_misc hid_logitech_hidpp hid_logitech_dj e1000e crc32c_intel ptp pps_core analog gameport joydev
 CPU: 3 PID: 3382 Comm: lt-dvbv5-zap Not tainted 4.14.0+ #3
 Hardware name:                  /D53427RKE, BIOS RKPPT10H.86A.0048.2017.0506.1545 05/06/2017
 task: ffff94b93bbe1e40 task.stack: ffffb7a98320c000
 RIP: 0010:__vb2_queue_cancel+0x177/0x250 [videobuf2_core]
 RSP: 0018:ffffb7a98320fd40 EFLAGS: 00010202
 RAX: 0000000000000001 RBX: ffff94b92ff72428 RCX: 0000000000000000
 RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffff94b92ff72428
 RBP: ffffb7a98320fd68 R08: ffff94b92ff725d8 R09: ffffb7a98320fcc8
 R10: ffff94b978003d98 R11: ffff94b92ff72428 R12: ffff94b92ff72428
 R13: 0000000000000282 R14: ffff94b92059ae20 R15: dead000000000100
 FS:  0000000000000000(0000) GS:ffff94b99e380000(0000) knlGS:0000000000000000
 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 CR2: 0000555953007d70 CR3: 000000012be09004 CR4: 00000000001606e0
 Call Trace:
  vb2_core_streamoff+0x28/0x90 [videobuf2_core]
  dvb_vb2_stream_off+0xd1/0x150 [dvb_core]
  dvb_dvr_release+0x114/0x120 [dvb_core]
  __fput+0xdf/0x1e0
  ____fput+0xe/0x10
  task_work_run+0x94/0xc0
  do_exit+0x2dc/0xba0
  do_group_exit+0x47/0xb0
  SyS_exit_group+0x14/0x20
  entry_SYSCALL_64_fastpath+0x1a/0xa5
 RIP: 0033:0x7f775e931ed8
 RSP: 002b:00007fff07019d68 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
 RAX: ffffffffffffffda RBX: 0000000001d02690 RCX: 00007f775e931ed8
 RDX: 0000000000000001 RSI: 000000000000003c RDI: 0000000000000001
 RBP: 00007fff0701a500 R08: 00000000000000e7 R09: ffffffffffffff70
 R10: 00007f775e854dd8 R11: 0000000000000246 R12: 0000000000000000
 R13: 00000000035fa000 R14: 000000000000000a R15: 000000000000000a
 Code: 00 00 04 74 1c 44 89 e8 49 83 c5 01 41 39 84 24 88 01 00 00 77 8a 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 89 df e8 bb fd ff ff eb da <0f> ff 41 8b b4 24 88 01 00 00 85 f6 74 34 bb 01 00 00 00 eb 10

There are actually two issues here:

1) list_del() should be called when changing the buffer state;

2) The logic with marks the buffers as done is at the wrong place.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agomedia: videobuf2: Add new uAPI for DVB streaming I/O
Satendra Singh Thakur [Tue, 19 Dec 2017 03:35:53 +0000 (22:35 -0500)]
media: videobuf2: Add new uAPI for DVB streaming I/O

Adds a new uAPI for DVB to use streaming I/O which is implemented
based on videobuf2, using those new ioctls:

- DMX_REQBUFS:  Request kernel to allocate buffers which count and size
        are dedicated by user.
- DMX_QUERYBUF: Get the buffer information like a memory offset which
will mmap() and be shared with user-space.
- DMX_EXPBUF:   Just for testing whether buffer-exporting success or not.
- DMX_QBUF:     Pass the buffer to kernel-space.
- DMX_DQBUF:    Get back the buffer which may contain TS data.

Originally developed by: Junghak Sung <jh1009.sung@samsung.com>, as
seen at:
https://patchwork.linuxtv.org/patch/31613/
https://patchwork.kernel.org/patch/7334301/

The original patch was written before merging VB2-core functionalities
upstream. When such series was added, several adjustments were made,
fixing some issues with V4L2, causing the original patch to be
non-trivially rebased.

After rebased, a few bugs in the patch were fixed. The patch was
also enhanced it and polling functionality got added.

The main changes over the original patch are:

dvb_vb2_fill_buffer():
- Set the size of the outgoing buffer after while loop using
  vb2_set_plane_payload;

- Added NULL check for source buffer as per normal convention
  of demux driver, this is called twice, first time with valid
  buffer second time with NULL pointer, if its not handled,
  it will result in  crash

- Restricted spinlock for only list_* operations

dvb_vb2_init():
- Restricted q->io_modes to only VB2_MMAP as its the only
  supported mode

dvb_vb2_release():
- Replaced the && in if condiion with &, because otherwise
  it was always getting satisfied.

dvb_vb2_stream_off():
- Added list_del code for enqueud buffers upon stream off

dvb_vb2_poll():
- Added this new function in order to support polling

dvb_demux_poll() and dvb_dvr_poll()
- dvb_vb2_poll() is now called from these functions

- Ported this patch and latest videobuf2 to lower kernel versions and
  tested auto scan.

Co-developed-by: Junghak Sung <jh1009.sung@samsung.com>
[mchehab@s-opensource.com: checkpatch fixes]
Signed-off-by: Junghak Sung <jh1009.sung@samsung.com>
Signed-off-by: Geunyoung Kim <nenggun.kim@samsung.com>
Acked-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Satendra Singh Thakur <satendra.t@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
6 years agoobjtool: Fix Clang enum conversion warning
Lukas Bulwahn [Tue, 26 Dec 2017 21:27:20 +0000 (15:27 -0600)]
objtool: Fix Clang enum conversion warning

Fix the following Clang enum conversion warning:

  arch/x86/decode.c:141:20: error: implicit conversion from enumeration
  type 'enum op_src_type' to different enumeration
  type 'enum op_dest_type' [-Werror,-Wenum-conversion]

    op->dest.type = OP_SRC_REG;
  ~ ^~~~~~~~~~

It just happened to work before because OP_SRC_REG and OP_DEST_REG have
the same value.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Reviewed-by: Nicholas Mc Guire <der.herr@hofr.at>
Reviewed-by: Nick Desaulniers <nick.desaulniers@gmail.com>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: baa41469a7b9 ("objtool: Implement stack validation 2.0")
Link: http://lkml.kernel.org/r/b4156c5738bae781c392e7a3691aed4514ebbdf2.1514323568.git.jpoimboe@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
6 years agox86/apic: Update the 'apic=' description of setting APIC driver
Dou Liyang [Mon, 4 Dec 2017 04:03:13 +0000 (12:03 +0800)]
x86/apic: Update the 'apic=' description of setting APIC driver

There are two consumers of apic=: the APIC debug level and the low
level generic architecture code, but Linux just documented the first
one.

Append the second description.

Signed-off-by: Dou Liyang <douly.fnst@cn.fujitsu.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: peterz@infradead.org
Cc: rdunlap@infradead.org
Cc: corbet@lwn.net
Link: https://lkml.kernel.org/r/20171204040313.24824-2-douly.fnst@cn.fujitsu.com
6 years agox86/apic: Avoid wrong warning when parsing 'apic=' in X86-32 case
Dou Liyang [Mon, 4 Dec 2017 04:03:12 +0000 (12:03 +0800)]
x86/apic: Avoid wrong warning when parsing 'apic=' in X86-32 case

There are two consumers of apic=:
  apic_set_verbosity() for setting the APIC debug level;
  parse_apic() for registering APIC driver by hand.

X86-32 supports both of them, but sometimes, kernel issues a weird warning.
eg: when kernel was booted up with 'apic=bigsmp' in command line,
early_param would warn like that:

...
[    0.000000] APIC Verbosity level bigsmp not recognised use apic=verbose or apic=debug
[    0.000000] Malformed early option 'apic'
...

Wrap the warning code in CONFIG_X86_64 case to avoid this.

Signed-off-by: Dou Liyang <douly.fnst@cn.fujitsu.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: peterz@infradead.org
Cc: rdunlap@infradead.org
Cc: corbet@lwn.net
Link: https://lkml.kernel.org/r/20171204040313.24824-1-douly.fnst@cn.fujitsu.com