mmu_context_mm.h is using struct task_struct, which is defined in
linux/sched.h. Source files that include mm_context_mm.h
(directly or indirectly) and doesn't include linux/sched.h will generate
an error. An example of that is drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
This patch adds an include of linux/sched.h to mmu_context_mm.h to avoid
such errors.
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
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Merge tag 'for-linus-4.14c-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross:
- a fix for the Xen gntdev device repairing an issue in case of partial
failure of mapping multiple pages of another domain
- a fix of a regression in the Xen balloon driver introduced in 4.13
- a build fix for Xen on ARM which will trigger e.g. for Linux RT
- a maintainers update for pvops (not really Xen, but carrying through
this tree just for convenience)
* tag 'for-linus-4.14c-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
maintainers: drop Chris Wright from pvops
arm/xen: don't inclide rwlock.h directly.
xen: fix booting ballooned down hvm guest
xen/gntdev: avoid out of bounds access in case of partial gntdev_mmap()
Pull s390 fix from Martin Schwidefsky:
"A fix for a regression in regard to machine check handling in KVM.
Keeping my fingers crossed that this is the last s390 fix for v4.14"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/kvm: fix detection of guest machine checks
Pull x86 fixes from Ingo Molnar:
"Misc fixes:
- revert a /dev/mem restriction change that crashes with certain boot
parameters
- an AMD erratum fix for cases where the BIOS doesn't apply it
- fix unwinder debuginfo
- improve ORC unwinder warning printouts"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
Revert "x86/mm: Limit mmap() of /dev/mem to valid physical addresses"
x86/unwind: Show function name+offset in ORC error messages
x86/entry: Fix idtentry unwind hint
x86/cpu/AMD: Apply the Erratum 688 fix when the BIOS doesn't
Pull perf fix from Ingo Molnar:
"A fix for a misplaced permission check that can leave perf PT or LBR
disabled (on Intel CPUs) permanently until the next reboot"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/x86/intel/bts: Fix exclusive event reference leak
This reverts commit ce56a86e2a.
There's unanticipated interaction with some boot parameters like 'mem=',
which now cause the new checks via valid_mmap_phys_addr_range() to be too
restrictive, crashing a Qemu bootup in fact, as reported by Fengguang Wu.
So while the motivation of the change is still entirely valid, we
need a few more rounds of testing to get it right - it's way too late
after -rc6, so revert it for now.
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Craig Bergstrom <craigb@google.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Luis R. Rodriguez <mcgrof@suse.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Toshi Kani <toshi.kani@hp.com>
Cc: dsafonov@virtuozzo.com
Cc: kirill.shutemov@linux.intel.com
Cc: mhocko@suse.com
Cc: oleg@redhat.com
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
rwlock.h should not be included directly. Instead linux/splinlock.h
should be included. One thing it does is to break the RT build.
Cc: Stefano Stabellini <sstabellini@kernel.org>
Cc: xen-devel@lists.xenproject.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
The introduction of {map/swizzle}_irq() hooks in the struct pci_host_bridge
allowed to replace the pci_fixup_irqs() PCI IRQ allocation in alpha arch
PCI code with per-bridge map/swizzle functions with commit 0e4c2eeb75
("alpha/PCI: Replace pci_fixup_irqs() call with host bridge IRQ mapping
hooks").
As a side effect of converting PCI IRQ allocation to the struct
pci_host_bridge {map/swizzle}_irq() hooks mechanism, the actual PCI IRQ
allocation function (ie pci_assign_irq()) is carried out per-device in
pci_device_probe() that is called when a PCI device driver is about to be
probed.
This means that, for drivers compiled as loadable modules, the actual PCI
device IRQ allocation can now happen after the system has booted so the
struct pci_host_bridge {map/swizzle}_irq() hooks pci_assign_irq() relies on
must stay valid after the system has booted so that PCI core can carry out
PCI IRQ allocation correctly.
Most of the alpha board structures pci_map_irq() and pci_swizzle() hooks
(that are used to initialize their struct pci_host_bridge equivalent
through the alpha_mv global variable - that represents the struct
alpha_machine_vector of the running kernel) are marked as
__init/__initdata; this causes freed memory dereferences when PCI IRQ
allocation is carried out after the kernel has booted (ie when loading PCI
drivers as loadable module) because when the kernel tries to bind the PCI
device to its (module) driver, the function pci_assign_irq() is called,
that in turn retrieves the struct pci_host_bridge {map/swizzle}_irq() hooks
to carry out PCI IRQ allocation; if those hooks are marked as __init
code/__initdata they point at freed/invalid memory.
Fix the issue by removing the __init/__initdata markers from all subarch
struct alpha_machine_vector.pci_map_irq()/pci_swizzle() functions (and
data).
Fixes: 0e4c2eeb75 ("alpha/PCI: Replace pci_fixup_irqs() call with host bridge IRQ mapping hooks")
Link: http://lkml.kernel.org/r/alpine.LRH.2.21.1710251043170.7098@math.ut.ee
Reported-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Meelis Roos <mroos@linux.ee>
Cc: Matt Turner <mattst88@gmail.com>
The new detection code for guest machine checks added a check based
on %r11 to .Lcleanup_sie to distinguish between normal asynchronous
interrupts and machine checks. But the funtion is called from the
program check handler as well with an undefined value in %r11.
The effect is that all program exceptions pointing to the SIE instruction
will set the CIF_MCCK_GUEST bit. The bit stays set for the CPU until the
next machine check comes in which will incorrectly be interpreted as a
guest machine check.
The simplest fix is to stop using .Lcleanup_sie in the program check
handler and duplicate a few instructions.
Fixes: c929500d7a ("s390/nmi: s390: New low level handling for machine check happening in guest")
Cc: <stable@vger.kernel.org> # v4.13+
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Commit:
d2878d642a ("perf/x86/intel/bts: Disallow use by unprivileged users on paranoid systems")
... adds a privilege check in the exactly wrong place in the event init path:
after the 'LBR exclusive' reference has been taken, and doesn't release it
in the case of insufficient privileges. After this, nobody in the system
gets to use PT or LBR afterwards.
This patch moves the privilege check to where it should have been in the
first place.
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: d2878d642a ("perf/x86/intel/bts: Disallow use by unprivileged users on paranoid systems")
Link: http://lkml.kernel.org/r/20171023123533.16973-1-alexander.shishkin@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Improve the warning messages to show the relevant function name+offset.
This makes it much easier to diagnose problems with the ORC metadata.
Before:
WARNING: can't dereference iret registers at ffff8801c5f17fe0 for ip ffffffff95f0d94b
After:
WARNING: can't dereference iret registers at ffff880178f5ffe0 for ip int3+0x5b/0x60
Reported-by: Andrei Vagin <avagin@virtuozzo.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: ee9f8fce99 ("x86/unwind: Add the ORC unwinder")
Link: http://lkml.kernel.org/r/6bada6b9eac86017e16bd79e1e77877935cb50bb.1508516398.git.jpoimboe@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This fixes the following ORC warning in the 'int3' entry code:
WARNING: can't dereference iret registers at ffff8801c5f17fe0 for ip ffffffff95f0d94b
The ORC metadata had the wrong stack offset for the iret registers.
Their location on the stack is dependent on whether the exception has an
error code.
Reported-and-tested-by: Andrei Vagin <avagin@virtuozzo.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: 8c1f75587a ("x86/entry/64: Add unwind hint annotations")
Link: http://lkml.kernel.org/r/931d57f0551ed7979d5e7e05370d445c8e5137f8.1508516398.git.jpoimboe@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Some F14h machines have an erratum which, "under a highly specific
and detailed set of internal timing conditions" can lead to skipping
instructions and RIP corruption.
Add the fix for those machines when their BIOS doesn't apply it or
there simply isn't BIOS update for them.
Tested-by: <mirh@protonmail.ch>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: <stable@vger.kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sherry Hurwitz <sherry.hurwitz@amd.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yazen Ghannam <Yazen.Ghannam@amd.com>
Link: http://lkml.kernel.org/r/20171022104731.28249-1-bp@alien8.de
Link: https://bugzilla.kernel.org/show_bug.cgi?id=197285
[ Added pr_info() that we activated the workaround. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull x86 fixes from Thomas Gleixner:
"A couple of fixes addressing the following issues:
- The last polishing for the TLB code, removing the last BUG_ON() and
the debug file along with tidying up the lazy TLB code.
- Prevent triple fault on 1st Gen. 486 caused by stupidly calling the
early IDT setup after the first function which causes a fault which
should be caught by the exception table.
- Limit the mmap of /dev/mem to valid addresses
- Prevent late microcode loading on Broadwell X
- Remove a redundant assignment in the cache info code"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mm: Limit mmap() of /dev/mem to valid physical addresses
x86/mm: Remove debug/x86/tlb_defer_switch_to_init_mm
x86/mm: Tidy up "x86/mm: Flush more aggressively in lazy TLB mode"
x86/mm/64: Remove the last VM_BUG_ON() from the TLB code
x86/microcode/intel: Disable late loading on model 79
x86/idt: Initialize early IDT before cr4_init_shadow()
x86/cpu/intel_cacheinfo: Remove redundant assignment to 'this_leaf'
Pull ARM fixes from Russell King:
"Three fixes this time around:
- ensure sparse realises that we're building for a 32-bit arch on
64-bit hosts.
- use the correct instruction for semihosting on v7m (nommu) CPUs.
- reserve address 0 to prevent the first page of memory being used on
nommu systems"
* 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: 8704/1: semihosting: use proper instruction on v7m processors
ARM: 8701/1: fix sparse flags for build on 64bit machines
ARM: 8700/1: nommu: always reserve address 0 away
Here is another set of bugfixes for ARM SoCs, mostly harmless:
- A boot regression fix on ux500
- PCIe interrupts on NXP i.MX7 and on Marvell Armada 7K/8K were
wired up wrong, in different ways
- Armada XP support for large memory never worked
- The socfpga reset controller now builds on 64-bit
- minor device tree corrections on gemini, mvebu, r-pi 3,
rockchip and at91
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Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Arnd Bergmann:
"Here is another set of bugfixes for ARM SoCs, mostly harmless:
- a boot regression fix on ux500
- PCIe interrupts on NXP i.MX7 and on Marvell Armada 7K/8K were wired
up wrong, in different ways
- Armada XP support for large memory never worked
- the socfpga reset controller now builds on 64-bit
- minor device tree corrections on gemini, mvebu, r-pi 3, rockchip
and at91"
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: ux500: Fix regression while init PM domains
ARM: dts: fix PCLK name on Gemini and MOXA ART
arm64: dts: rockchip: fix typo in iommu nodes
arm64: dts: rockchip: correct vqmmc voltage for rk3399 platforms
ARM: dts: imx7d: Invert legacy PCI irq mapping
bus: mbus: fix window size calculation for 4GB windows
ARM: dts: at91: sama5d2: add ADC hw trigger edge type
ARM: dts: at91: sama5d2_xplained: enable ADTRG pin
ARM: dts: at91: at91-sama5d27_som1: fix PHY ID
ARM: dts: bcm283x: Fix console path on RPi3
reset: socfpga: fix for 64-bit compilation
ARM: dts: Fix I2C repeated start issue on Armada-38x
arm64: dts: marvell: fix interrupt-map property for Armada CP110 PCIe controller
arm64: dts: salvator-common: add 12V regulator to backlight
ARM: dts: sun6i: Fix endpoint IDs in second display pipeline
arm64: allwinner: a64: pine64: Use dcdc1 regulator for mmc0
Two fixes, one for the A31 DRM binding, and one for a missing regulator on
the pine MMC controller.
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Merge tag 'sunxi-fixes-for-4.14' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into fixes
Pull "Allwinner fixes for 4.14" from Maxime Ripard:
Two fixes, one for the A31 DRM binding, and one for a missing regulator on
the pine MMC controller.
* tag 'sunxi-fixes-for-4.14' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
ARM: dts: sun6i: Fix endpoint IDs in second display pipeline
arm64: allwinner: a64: pine64: Use dcdc1 regulator for mmc0
Currently, it is possible to mmap() any offset from /dev/mem. If a
program mmaps() /dev/mem offsets outside of the addressable limits
of a system, the page table can be corrupted by setting reserved bits.
For example if you mmap() offset 0x0001000000000000 of /dev/mem on an
x86_64 system with a 48-bit bus, the page fault handler will be called
with error_code set to RSVD. The kernel then crashes with a page table
corruption error.
This change prevents this page table corruption on x86 by refusing
to mmap offsets higher than the highest valid address in the system.
Signed-off-by: Craig Bergstrom <craigb@google.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Luis R. Rodriguez <mcgrof@suse.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Toshi Kani <toshi.kani@hp.com>
Cc: dsafonov@virtuozzo.com
Cc: kirill.shutemov@linux.intel.com
Cc: mhocko@suse.com
Cc: oleg@redhat.com
Link: http://lkml.kernel.org/r/20171019192856.39672-1-craigb@google.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Add 12V regulator to backlight allowing the power supply
for the backlight to be found.
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Merge tag 'renesas-fixes-for-v4.14' of https://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into fixes
Pull "Renesas ARM Based SoC Fixes for v4.14" from Simon Horman:
Add 12V regulator to backlight allowing the power supply
for the backlight to be found.
* tag 'renesas-fixes-for-v4.14' of https://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
arm64: dts: salvator-common: add 12V regulator to backlight
The commit afece3ab9a ("PM / Domains: Add time accounting to various
genpd states") causes a boot regression for ux500.
The problem occurs when the ux500 machine code calls pm_genpd_init(), which
since the above change triggers a call to ktime_get(). More precisely,
because ux500 initializes PM domains in the init_IRQ() phase of the boot,
timekeeping has not yet been initialized.
Fix the problem by moving the initialization of the PM domains to after
timekeeping has been initialized.
Fixes: afece3ab9a ("PM / Domains: Add time accounting to various genpd..")
Cc: Thara Gopinath <thara.gopinath@linaro.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
These platforms provide a clock to their watchdog, in each
case this is the peripheral clock (PCLK), so explicitly
name the clock in the device tree.
Take this opportunity to add the "faraday,ftwdt010"
compatible as fallback to the watchdog IP blocks.
Cc: Jonas Jensen <jonas.jensen@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
exceed 3.0V, so they got fixed to not be at 3.3V
And Arnd found a typo in the recently added iommu nodes.
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Merge tag 'v4.14-rockchip-dts64fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into fixes
Pull "Rockchip dts64 Fixes for 4.14 part 2" from Heiko Stübner:
The vqmmc voltages on rk3399 pose a risk for the chip if they
exceed 3.0V, so they got fixed to not be at 3.3V
And Arnd found a typo in the recently added iommu nodes.
* tag 'v4.14-rockchip-dts64fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
arm64: dts: rockchip: fix typo in iommu nodes
arm64: dts: rockchip: correct vqmmc voltage for rk3399 platforms
- Fix the legacy PCI interrupt numbers for i.MX7. The numbers were
wrongly coded in an inverted order than what Reference Manual tells.
It causes problem for PCI devices using legacy interrupt.
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Merge tag 'imx-fixes-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into fixes
Pull "i.MX fixes for 4.14" from Shawn Guo:
- Fix the legacy PCI interrupt numbers for i.MX7. The numbers were
wrongly coded in an inverted order than what Reference Manual tells.
It causes problem for PCI devices using legacy interrupt.
* tag 'imx-fixes-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
ARM: dts: imx7d: Invert legacy PCI irq mapping
Two device tree related fixes:
- One on Armada 38x using a other compatible string for I2C in order
to cover an errata.
- One for Armada 7K/8K fixing a typo on interrupt-map property for
PCIe leading to fail PME and AER root port service initialization
And the last one for the mbus fixing the window size calculation when
it exceed 32bits
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Merge tag 'mvebu-fixes-4.14-2' of git://git.infradead.org/linux-mvebu into fixes
Pull "mvebu fixes for 4.14 (part 2)" from Gregory CLEMENT
Two device tree related fixes:
- One on Armada 38x using a other compatible string for I2C in order
to cover an errata.
- One for Armada 7K/8K fixing a typo on interrupt-map property for
PCIe leading to fail PME and AER root port service initialization
And the last one for the mbus fixing the window size calculation when
it exceed 32bits
* tag 'mvebu-fixes-4.14-2' of git://git.infradead.org/linux-mvebu:
bus: mbus: fix window size calculation for 4GB windows
ARM: dts: Fix I2C repeated start issue on Armada-38x
arm64: dts: marvell: fix interrupt-map property for Armada CP110 PCIe controller
- one DT phy address fix for the new sama5d27 som1 ek
- two DT ADC patches that were forgotten while moving to
hardware triggers for sama5d2 (iio changes already applied)
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Merge tag 'at91-fixes2' of git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91 into fixes
Fixes: second batch for 4.14:
- one DT phy address fix for the new sama5d27 som1 ek
- two DT ADC patches that were forgotten while moving to
hardware triggers for sama5d2 (iio changes already applied)
* tag 'at91-fixes2' of git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91:
ARM: dts: at91: sama5d2: add ADC hw trigger edge type
ARM: dts: at91: sama5d2_xplained: enable ADTRG pin
ARM: dts: at91: at91-sama5d27_som1: fix PHY ID
please pull the following:
- Loic fixes the console path on the Raspberry Pi 3 which was not correctly set
and would cause all sorts of confusion between the Bluetooth controller and the
kernel console
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Merge tag 'arm-soc/for-4.14/devicetree-fixes' of http://github.com/Broadcom/stblinux into fixes
Pull "Broadcom devicetree fixes for 4.14" from Florian Fainelli:
This pull request contains Broadcom ARM-based SoC Device Tree fixes for 4.14,
please pull the following:
- Loic fixes the console path on the Raspberry Pi 3 which was not correctly set
and would cause all sorts of confusion between the Bluetooth controller and the
kernel console
* tag 'arm-soc/for-4.14/devicetree-fixes' of http://github.com/Broadcom/stblinux:
ARM: dts: bcm283x: Fix console path on RPi3
For CPUs which have an unknown or invalid CPU location (physical location)
assume that their cycle counters aren't syncronized across CPUs.
Signed-off-by: Helge Deller <deller@gmx.de>
Fixes: c8c3735997 ("parisc: Enhance detection of synchronous cr16 clocksources")
Cc: stable@vger.kernel.org # 4.13+
Signed-off-by: Helge Deller <deller@gmx.de>
__cmpxchg_u64 is built and used outside CONFIG_64BIT and thus needs to
be exported. This fixes the following build error seen when building
parisc:allmodconfig.
ERROR: "__cmpxchg_u64" [drivers/net/ethernet/intel/i40e/i40e.ko] undefined!
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Helge Deller <deller@gmx.de>
As discussed on the debian-hppa list, double-wordcompare and exchange
operations fail on 32-bit kernels. Looking at the code, I realized that
the ",ma" completer does the wrong thing in the "ldw,ma 4(%r26), %r29"
instruction. This increments %r26 and causes the following store to
write to the wrong location.
Note by Helge Deller:
The patch applies cleanly to stable kernel series if this upstream
commit is merged in advance:
f4125cfdb3 ("parisc: Avoid trashing sr2 and sr3 in LWS code").
Signed-off-by: John David Anglin <dave.anglin@bell.net>
Tested-by: Christoph Biedl <debian.axhn@manchmal.in-ulm.de>
Fixes: 8920649120 ("parisc: Implement new LWS CAS supporting 64 bit operations.")
Cc: stable@vger.kernel.org # 3.13+
Signed-off-by: Helge Deller <deller@gmx.de>
Borislav thinks that we don't need this knob in a released kernel.
Get rid of it.
Requested-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: b956575bed ("x86/mm: Flush more aggressively in lazy TLB mode")
Link: http://lkml.kernel.org/r/1fa72431924e81e86c164ff7881bf9240d1f1a6c.1508000261.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Due to timezones, commit:
b956575bed ("x86/mm: Flush more aggressively in lazy TLB mode")
was an outdated patch that well tested and fixed the bug but didn't
address Borislav's review comments.
Tidy it up:
- The name "tlb_use_lazy_mode()" was highly confusing. Change it to
"tlb_defer_switch_to_init_mm()", which describes what it actually
means.
- Move the static_branch crap into a helper.
- Improve comments.
Actually removing the debugfs option is in the next patch.
Reported-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: b956575bed ("x86/mm: Flush more aggressively in lazy TLB mode")
Link: http://lkml.kernel.org/r/154ef95428d4592596b6e98b0af1d2747d6cfbf8.1508000261.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Blacklist Broadwell X model 79 for late loading due to an erratum.
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Tony Luck <tony.luck@intel.com>
Cc: <stable@vger.kernel.org>
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/20171018111225.25635-1-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull s390 fixes from Martin Schwidefsky:
"Two bug fixes:
- A fix for cputime accounting vs CPU hotplug
- Add two options to zfcpdump_defconfig to make SCSI dump work again"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390: fix zfcpdump-config
s390/cputime: fix guest/irq/softirq times after CPU hotplug
The latest dtc warns about an extraneous cell in the interrupt
property of two of the iommu device nodes:
Warning (interrupts_property): interrupts size is (16), expected multiple of 12 in /iommu@ff373f00
Warning (interrupts_property): interrupts size is (16), expected multiple of 12 in /iommu@ff900800
This removes the typo.
Fixes: cede4c79de ("arm64: dts: rockchip: add rk3368 iommu nodes")
Fixes: 49c82f2b7c ("arm64: dts: rockchip: add rk3328 iommu nodes")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
The vcc_sd or vcc_sdio used for IO voltage for sdmmc and sdio
interface on rk3399 platform have a limitation that it can't be
larger than 3.0v, otherwise it has a potential risk for the chip.
Correct all of them.
Fixes: 171582e00d ("arm64: dts: rockchip: add support for firefly-rk3399 board")
Fixes: 2c66fc34e9 ("arm64: dts: rockchip: add RK3399-Q7 (Puma) SoM")
Fixes: 8164a84cca ("arm64: dts: rockchip: Add support for rk3399 sapphire SOM")
Cc: stable@vger.kernel.org
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Tested-by: Klaus Goger <klaus.goger@theobroma-systems.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Moving the early IDT setup out of assembly code breaks the boot on first
generation 486 systems.
The reason is that the call of idt_setup_early_handler, which sets up the
early handlers was added after the call to cr4_init_shadow().
cr4_init_shadow() tries to read CR4 which is not available on those
systems. The accessor function uses a extable fixup to handle the resulting
fault. As the IDT is not set up yet, the cr4 read exception causes an
instantaneous reboot for obvious reasons.
Call idt_setup_early_handler() before cr4_init_shadow() so IDT is set up
before the first exception hits.
Fixes: 87e81786b1 ("x86/idt: Move early IDT setup out of 32-bit asm")
Reported-and-tested-by: Matthew Whitehead <whiteheadm@acm.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Andy Lutomirski <luto@kernel.org>
Link: https://lkml.kernel.org/r/alpine.DEB.2.20.1710161210290.1973@nanos
The 'this_leaf' variable is assigned a value that is never
read and it is updated a little later with a newer value,
hence we can remove the redundant assignment.
Cleans up the following Clang warning:
Value stored to 'this_leaf' is never read
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Borislav Petkov <bp@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: kernel-janitors@vger.kernel.org
Link: http://lkml.kernel.org/r/20171015160203.12332-1-colin.king@canonical.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
zipl from s390-tools generates root=/dev/ram0 kernel cmdline for
zfcpdump, thus BLK_DEV_RAM is required.
zfcpdump initrd mounts DEBUG_FS, thus is also required.
Bug-Ubuntu: https://launchpad.net/bugs/1722735
Bug-Ubuntu: https://launchpad.net/bugs/1719290
Signed-off-by: Dimitri John Ledkov <xnox@ubuntu.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
On POWER9 systems, we push the VCPU context onto the XIVE (eXternal
Interrupt Virtualization Engine) hardware when entering a guest,
and pull the context off the XIVE when exiting the guest. The push
is done with cache-inhibited stores, and the pull with cache-inhibited
loads.
Testing has revealed that it is possible (though very rare) for
the stores to get reordered with the loads so that we end up with the
guest VCPU context still loaded on the XIVE after we have exited the
guest. When that happens, it is possible for the same VCPU context
to then get loaded on another CPU, which causes the machine to
checkstop.
To fix this, we add I/O barrier instructions (eieio) before and
after the push and pull operations. As partial compensation for the
potential slowdown caused by the extra barriers, we remove the eieio
instructions between the two stores in the push operation, and between
the two loads in the pull operation. (The architecture requires
loads to cache-inhibited, guarded storage to be kept in order, and
requires stores to cache-inhibited, guarded storage likewise to be
kept in order, but allows such loads and stores to be reordered with
respect to each other.)
Reported-by: Carol L Soto <clsoto@us.ibm.com>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Pull x86 fixes from Ingo Molnar:
"A landry list of fixes:
- fix reboot breakage on some PCID-enabled system
- fix crashes/hangs on some PCID-enabled systems
- fix microcode loading on certain older CPUs
- various unwinder fixes
- extend an APIC quirk to more hardware systems and disable APIC
related warning on virtualized systems
- various Hyper-V fixes
- a macro definition robustness fix
- remove jprobes IRQ disabling
- various mem-encryption fixes"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/microcode: Do the family check first
x86/mm: Flush more aggressively in lazy TLB mode
x86/apic: Update TSC_DEADLINE quirk with additional SKX stepping
x86/apic: Silence "FW_BUG TSC_DEADLINE disabled due to Errata" on hypervisors
x86/mm: Disable various instrumentations of mm/mem_encrypt.c and mm/tlb.c
x86/hyperv: Fix hypercalls with extended CPU ranges for TLB flushing
x86/hyperv: Don't use percpu areas for pcpu_flush/pcpu_flush_ex structures
x86/hyperv: Clear vCPU banks between calls to avoid flushing unneeded vCPUs
x86/unwind: Disable unwinder warnings on 32-bit
x86/unwind: Align stack pointer in unwinder dump
x86/unwind: Use MSB for frame pointer encoding on 32-bit
x86/unwind: Fix dereference of untrusted pointer
x86/alternatives: Fix alt_max_short macro to really be a max()
x86/mm/64: Fix reboot interaction with CR4.PCIDE
kprobes/x86: Remove IRQ disabling from jprobe handlers
kprobes/x86: Set up frame pointer in kprobe trampoline
Pull RAS fixes from Ingo Molnar:
"A boot parameter fix, plus a header export fix"
* 'ras-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mce: Hide mca_cfg
RAS/CEC: Use the right length for "cec_disable"
Pull perf fixes from Ingo Molnar:
"Some tooling fixes plus three kernel fixes: a memory leak fix, a
statistics fix and a crash fix"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/x86/intel/uncore: Fix memory leaks on allocation failures
perf/core: Fix cgroup time when scheduling descendants
perf/core: Avoid freeing static PMU contexts when PMU is unregistered
tools include uapi bpf.h: Sync kernel ABI header with tooling header
perf pmu: Unbreak perf record for arm/arm64 with events with explicit PMU
perf script: Add missing separator for "-F ip,brstack" (and brstackoff)
perf callchain: Compare dsos (as well) for CCKEY_FUNCTION
According to i.MX7D reference manual (Rev. 0.1, table 7-1, page 1221)
legacy PCI interrupt mapping is as follows:
- PCIE INT A is IRQ 122
- PCIE INT B is IRQ 123
- PCIE INT C is IRQ 124
- PCIE INT D is IRQ 125
Invert the mapping information in corresponding DT node to reflect
that.
Cc: yurovsky@gmail.com
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Fixes: a816d5750e ("ARM: dts: imx7d: Add node for PCIe controller")
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
On CPUs like AMD's Geode, for example, we shouldn't even try to load
microcode because they do not support the modern microcode loading
interface.
However, we do the family check *after* the other checks whether the
loader has been disabled on the command line or whether we're running in
a guest.
So move the family checks first in order to exit early if we're being
loaded on an unsupported family.
Reported-and-tested-by: Sven Glodowski <glodi1@arcor.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: <stable@vger.kernel.org> # 4.11..
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://bugzilla.suse.com/show_bug.cgi?id=1061396
Link: http://lkml.kernel.org/r/20171012112316.977-1-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
