04 Jan, 2015
1 commit
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futex_atomic_cmpxchg_inatomic() does not work on UML because
it triggers a copy_from_user() in kernel context.
On UML copy_from_user() can only be used if the kernel was called
by a real user space process such that UML can use ptrace()
to fetch the value.Reported-by: Miklos Szeredi
Suggested-by: Geert Uytterhoeven
Signed-off-by: Richard Weinberger
Tested-by: Daniel Walter
01 Jan, 2015
1 commit
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Pull arch/nios2 fixes from Ley Foon Tan:
- fix compilation error when enable CONFIG_PREEMPT
- initialize cpuinfo.mmu variable supplied by the device tree
* tag 'nios2-fixes-v3.19-rc3' of git://git.rocketboards.org/linux-socfpga-next:
nios2: Use preempt_schedule_irq
nios2: Initialize cpuinfo.mmu
31 Dec, 2014
3 commits
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Follow aa0d53260596 ("ia64: Use preempt_schedule_irq") and use
preempt_schedule_irq instead of enabling/disabling interrupts and
messing around with PREEMPT_ACTIVE in the nios2 low-level preemption
code ourselves. Also get rid of the now needless re-check for
TIF_NEED_RESCHED, preempt_schedule_irq will already take care of
rescheduling.This also fixes the following build error when building with
CONFIG_PREEMPT:arch/nios2/kernel/built-in.o: In function `need_resched':
arch/nios2/kernel/entry.S:374: undefined reference to `PREEMPT_ACTIVE'Cc: Thomas Gleixner
Signed-off-by: Tobias Klauser
Acked-by: Ley Foon Tan -
This patch initializes the mmu field of the cpuinfo structure to the
value supplied by the devicetree.Signed-off-by: Walter Goossens
Acked-by: Ley Foon Tan -
Pull ARM SoC fixes from Arnd Bergmann:
"A very small set of fixes for 3.19, as everyone was out.The clocksource patch was something I missed for the merge window
after the change that broke arm64 was merged through arm-soc. The
other two patches are a fix for an undetected merge problem in mvebu
and a defconfig change to make some exynos boards work with the normal
multi_v7_defconfig"* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
Add USB_EHCI_EXYNOS to multi_v7_defconfig
ARM: mvebu: Fix pinctrl configuration for Armada 370 DB
clocksource: arch_timer: Only use the virtual counter (CNTVCT) on arm64
30 Dec, 2014
1 commit
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Currently we enable Exynos devices in the multi v7 defconfig, however, when
testing on my ODROID-U3, I noticed that USB was not working. Enabling this
option causes USB to work, which enables networking support as well since the
ODROID-U3 has networking on the USB bus.[arnd] Support for odroid-u3 was added in 3.10, so it would be nice to
backport this fix at least that far.Signed-off-by: Steev Klimaszewski
Cc: stable@vger.kernel.org # 3.10
Signed-off-by: Arnd Bergmann
29 Dec, 2014
1 commit
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Pull KVM fixes from Paolo Bonzini:
"The important fixes are for two bugs introduced by the merge window.On top of this, add a couple of WARN_ONs and stop spamming dmesg on
pretty much every boot of a virtual machine"* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
kvm: warn on more invariant breakage
kvm: fix sorting of memslots with base_gfn == 0
kvm: x86: drop severity of "generation wraparound" message
kvm: x86: vmx: reorder some msr writing
28 Dec, 2014
2 commits
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Since most virtual machines raise this message once, it is a bit annoying.
Make it KERN_DEBUG severity.Cc: stable@vger.kernel.org
Fixes: 7a2e8aaf0f6873b47bc2347f216ea5b0e4c258ab
Signed-off-by: Paolo Bonzini -
The commit 34a1cd60d17f, "x86: vmx: move some vmx setting from
vmx_init() to hardware_setup()", tried to refactor some codes
specific to vmx hardware setting into hardware_setup(), but some
msr writing should depend on our previous setting condition like
enable_apicv, enable_ept and so on.Reported-by: Jamie Heilman
Tested-by: Jamie Heilman
Signed-off-by: Tiejun Chen
Signed-off-by: Paolo Bonzini
27 Dec, 2014
2 commits
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Pull parisc build fix from Helge Deller:
"This unbreaks the kernel compilation on parisc with gcc-4.9"* 'parisc-3.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: fix out-of-register compiler error in ldcw inline assembler function -
The __ldcw macro has a problem when its argument needs to be reloaded from
memory. The output memory operand and the input register operand both need to
be reloaded using a register in class R1_REGS when generating 64-bit code.
This fails because there's only a single register in the class. Instead, use a
memory clobber. This also makes the __ldcw macro a compiler memory barrier.Signed-off-by: John David Anglin
Cc: [3.13+]
Signed-off-by: Helge Deller
24 Dec, 2014
3 commits
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This patch adds pgd_page definition in order to keep supporting
HAVE_GENERIC_RCU_GUP configuration. In addition, it changes pud_page
expression to align with pmd_page for readability.An introduction of pgd_page resolves the following build breakage
under 4KB + 4Level memory management combo.mm/gup.c: In function 'gup_huge_pgd':
mm/gup.c:889:2: error: implicit declaration of function 'pgd_page' [-Werror=implicit-function-declaration]
head = pgd_page(orig);
^
mm/gup.c:889:7: warning: assignment makes pointer from integer without a cast
head = pgd_page(orig);Cc: Will Deacon
Cc: Steve Capper
Signed-off-by: Jungseok Lee
[catalin.marinas@arm.com: remove duplicate pmd_page definition]
Signed-off-by: Catalin Marinas -
The usual defconfig tweaks, this time:
- FHANDLE and AUTOFS4_FS to keep systemd happy
- PID_NS, QUOTA and KEYS to keep LTP happy
- Disable DEBUG_PREEMPT, as this *really* hurts performanceSigned-off-by: Will Deacon
Signed-off-by: Catalin Marinas -
On arm64 the TTBR0_EL1 register is set to either the reserved TTBR0
page tables on boot or to the active_mm mappings belonging to user space
processes, it must never be set to swapper_pg_dir page tables mappings.When a CPU is booted its active_mm is set to init_mm even though its
TTBR0_EL1 points at the reserved TTBR0 page mappings. This implies
that when __cpu_suspend is triggered the active_mm can point at
init_mm even if the current TTBR0_EL1 register contains the reserved
TTBR0_EL1 mappings.Therefore, the mm save and restore executed in __cpu_suspend might
turn out to be erroneous in that, if the current->active_mm corresponds
to init_mm, on resume from low power it ends up restoring in the
TTBR0_EL1 the init_mm mappings that are global and can cause speculation
of TLB entries which end up being propagated to user space.This patch fixes the issue by checking the active_mm pointer before
restoring the TTBR0 mappings. If the current active_mm == &init_mm,
the code sets the TTBR0_EL1 to the reserved TTBR0 mapping instead of
switching back to the active_mm, which is the expected behaviour
corresponding to the TTBR0_EL1 settings when __cpu_suspend was entered.Fixes: 95322526ef62 ("arm64: kernel: cpu_{suspend/resume} implementation")
Cc: # 3.14+: 18ab7db
Cc: # 3.14+: 714f599
Cc: # 3.14+: c3684fb
Cc: # 3.14+
Cc: Will Deacon
Signed-off-by: Lorenzo Pieralisi
Signed-off-by: Catalin Marinas
22 Dec, 2014
1 commit
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Commit a3a60f81ee6f (dma-mapping: replace set_arch_dma_coherent_ops with
arch_setup_dma_ops) changes the of_dma_configure() arch dma_ops callback
to arch_setup_dma_ops but only the arch/arm code is updated. Subsequent
commit 97890ba9289c (dma-mapping: detect and configure IOMMU in
of_dma_configure) changes the arch_setup_dma_ops() prototype further to
handle iommu. The patch makes the corresponding arm64 changes.Signed-off-by: Catalin Marinas
Reported-by: Arnd Bergmann
Acked-by: Will Deacon
21 Dec, 2014
4 commits
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The commit b4607572ef86 (ARM: mvebu: remove conflicting muxing on
Armada 370 DB) removes the hog pins muxing. As it is explained in the
commit log it solves a warning a boot time, but more important it also
allows using the Giga port 0 of the board.Unfortunately in the same time the commit 4904a82a9399 (arm: mvebu:
move Armada 370/XP pinctrl node definition armada-370-xp.dtsi) was
merged and it introduced again the hog pins muxing. Because of it, the
Giga port 0 of the board is no more usable.This commit remove again the conflicting muxing (hopefully for the
last time).Signed-off-by: Gregory CLEMENT
[andrew@lunn.ch: Correct commit IDs]
Signed-off-by: Andrew Lunn
Fixes: 4904a82a9399 ("arm: mvebu: move Armada 370/XP pinctrl node definition armada-370-xp.dtsi") -
Pull ACCESS_ONCE cleanup preparation from Christian Borntraeger:
"kernel: Provide READ_ONCE and ASSIGN_ONCEAs discussed on LKML http://marc.info/?i=54611D86.4040306%40de.ibm.com
ACCESS_ONCE might fail with specific compilers for non-scalar
accesses.Here is a set of patches to tackle that problem.
The first patch introduce READ_ONCE and ASSIGN_ONCE. If the data
structure is larger than the machine word size memcpy is used and a
warning is emitted. The next patches fix up several in-tree users of
ACCESS_ONCE on non-scalar types.This does not yet contain a patch that forces ACCESS_ONCE to work only
on scalar types. This is targetted for the next merge window as Linux
next already contains new offenders regarding ACCESS_ONCE vs.
non-scalar types"* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/borntraeger/linux:
s390/kvm: REPLACE barrier fixup with READ_ONCE
arm/spinlock: Replace ACCESS_ONCE with READ_ONCE
arm64/spinlock: Replace ACCESS_ONCE READ_ONCE
mips/gup: Replace ACCESS_ONCE with READ_ONCE
x86/gup: Replace ACCESS_ONCE with READ_ONCE
x86/spinlock: Replace ACCESS_ONCE with READ_ONCE
mm: replace ACCESS_ONCE with READ_ONCE or barriers
kernel: Provide READ_ONCE and ASSIGN_ONCE -
Pull clk framework updates from Mike Turquette:
"This is much later than usual due to several last minute bugs that had
to be addressed. As usual the majority of changes are new drivers and
modifications to existing drivers. The core recieved many fixes along
with the groundwork for several large changes coming in the future
which will better parition clock providers from clock consumers"* tag 'clk-for-linus-3.19' of git://git.linaro.org/people/mike.turquette/linux: (86 commits)
clk: samsung: Fix Exynos 5420 pinctrl setup and clock disable failure due to domain being gated
ARM: OMAP3: clock: fix boot breakage in legacy mode
ARM: OMAP2+: clock: fix DPLL code to use new determine rate APIs
clk: Really fix deadlock with mmap_sem
clk: mmp: fix sparse non static symbol warning
clk: Change clk_ops->determine_rate to return a clk_hw as the best parent
clk: change clk_debugfs_add_file to take a struct clk_hw
clk: Don't expose __clk_get_accuracy
clk: Don't try to use a struct clk* after it could have been freed
clk: Remove unused function __clk_get_prepare_count
clk: samsung: Fix double add of syscore ops after driver rebind
clk: samsung: exynos4: set parent of sclk_hdmiphy to hdmi
clk: samsung: exynos4415: Fix build with PM_SLEEP disabled
clk: samsung: remove unnecessary inclusion of header files from clk.h
clk: samsung: remove unnecessary CONFIG_OF from clk.c
clk: samsung: Spelling s/bwtween/between/
clk: rockchip: Add support for the mmc clock phases using the framework
clk: rockchip: add bindings for the mmc clocks
clk: rockchip: rk3288 export i2s0_clkout for use in DT
clk: rockchip: use clock ID for DMC (memory controller) on rk3288
... -
Pull CONFIG_PM_RUNTIME elimination from Rafael Wysocki:
"This removes the last few uses of CONFIG_PM_RUNTIME introduced
recently and makes that config option finally go away.CONFIG_PM will be available directly from the menu now and also it
will be selected automatically if CONFIG_SUSPEND or CONFIG_HIBERNATION
is set"* tag 'pm-config-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
PM: Eliminate CONFIG_PM_RUNTIME
tty: 8250_omap: Replace CONFIG_PM_RUNTIME with CONFIG_PM
sound: sst-haswell-pcm: Replace CONFIG_PM_RUNTIME with CONFIG_PM
spi: Replace CONFIG_PM_RUNTIME with CONFIG_PM
20 Dec, 2014
21 commits
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Pull arch/hexagon updates from Richard Kuo:
"Build cleanup and a few misc fixes"* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rkuo/linux-hexagon-kernel:
Hexagon: fix signal delivery for debug traps
Hexagon: set ARCH_DMA_MINALIGN
Hexagon: fix alignment of init_task in RW_DATA_SECTION
hexagon: Fix build failures in linux-next -
Pull arch/chris updates from Jesper Nilsson:
"Mostly cleanup and build fixes for CRISv32 allmodconfigGod Jul och Gott Nytt år!"
* tag 'cris-changes-for-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/jesper/cris:
CRISv32: Remove last remnants of ETRAX_SPI_MMC_BOARD
CRISv32: ETRAXFS: Fix recursive spinlock
CRISv32: Select MTDRAM for axisflashmap
CRISv32: Implement early console
CRIS: Use KALLSYMs if available in call stack dump
CRISv32: Fix declaration mismatch
CRISv32: Rewrite of synchronous serial port driver
CRIS: Update init memory handling
CRISv32: Better handling of watchdog bite
CRIS: Export missing function symbols
CRIS: Export ioremap_nocache
CRIS: Fix headers_install
CRISv32: Add missing include for mm.h
CRISv32: Drop obsolete file for SPI driver -
Pull ia64 __get_cpu_var removal from Tony Luck:
"__get_cpu_var removed from rest of tree, drop reference from comments
in arch/ia64"* tag 'please-pull-misc-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux:
[IA64] Update comment that references __get_cpu_var -
There are no users of this symbol left.
Reported-by: Paul Bolle
Signed-off-by: Jesper Nilsson -
Move pinmux alloc/dealloc code into functions that don't take
the spinlock so we can use from code that has the spinlock already.CRISv32 has no working SMP, so spinlocks becomes a NOP,
so deadlock was never seen.Signed-off-by: Jesper Nilsson
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Fixes compile error on allmodconfig.
Signed-off-by: Jesper Nilsson
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Signed-off-by: Jesper Nilsson
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Also, print kernel version on oops.
Signed-off-by: Jesper Nilsson
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Drop i2c_init from this header, it was declared non-static here,
but static in the C-file.Signed-off-by: Jesper Nilsson
-
Make driver possible to load as a module and try to handle
locking better.Signed-off-by: Jesper Nilsson
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- Add free_initrd_mem as found by Guenter Roeck
- Add free_init_pages
- Export empty_zero_page symbolSigned-off-by: Jesper Nilsson
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Don't enter watchdog handling if we're already in watchdog handling.
Also some minor formatting tweaks.
Signed-off-by: Jesper Nilsson
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strcmp was lost when all other string functions were removed,
but we still have an optimized version for this on CRISv32,
so any driver built as a module would not have access to this symbol.In a similar manner, we had optimized versions of
csum_partial_copy_from_user and __do_clear_user
but no exported symbols for them, breaking bunch of other drivers
when built as a module.At the same time, move EXPORT_SYMBOL(__copy_user) and
EXPORT_SYMBOL(__copy_user_zeroing) C-files so it's
located together with the function definition.Signed-off-by: Jesper Nilsson
-
Signed-off-by: Jesper Nilsson
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Fix headers_install by adjusting the path to arch files.
And delete unused Kbuild file.
Drop special handling of cris in the headers.sh script
as a nice side-effect.Signed-off-by: Sam Ravnborg
Cc: Mikael Starvik
Cc: David Howells
Signed-off-by: Jesper Nilsson -
Fixes the following compile error.
arch/cris/arch-v32/kernel/time.c: In function 'reset_watchdog':
arch/cris/arch-v32/kernel/time.c:121:2:
error: implicit declaration of function 'global_page_state'Signed-off-by: Guenter Roeck
Signed-off-by: Jesper Nilsson -
File was already deleted.
Signed-off-by: Jesper Nilsson
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Pull x86 apic updates from Thomas Gleixner:
"After stopping the full x86/apic branch, I took some time to go
through the first block of patches again, which are mostly cleanups
and preparatory work for the irqdomain conversion and ioapic hotplug
support.Unfortunaly one of the real problematic commits was right at the
beginning, so I rebased this portion of the pending patches without
the offenders.It would be great to get this into 3.19. That makes reworking the
problematic parts simpler. The usual tip testing did not unearth any
issues and it is fully bisectible now.I'm pretty confident that this wont affect the calmness of the xmas
season.Changes:
- Split the convoluted io_apic.c code into domain specific parts
(vector, ioapic, msi, htirq)
- Introduce proper helper functions to retrieve irq specific data
instead of open coded dereferencing of pointers
- Preparatory work for ioapic hotplug and irqdomain conversion
- Removal of the non functional pci-ioapic driver
- Removal of unused irq entry stubs
- Make native_smp_prepare_cpus() preemtible to avoid GFP_ATOMIC
allocations for everything which is called from there.
- Small cleanups and fixes"* 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (36 commits)
iommu/amd: Use helpers to access irq_cfg data structure associated with IRQ
iommu/vt-d: Use helpers to access irq_cfg data structure associated with IRQ
x86: irq_remapping: Use helpers to access irq_cfg data structure associated with IRQ
x86, irq: Use helpers to access irq_cfg data structure associated with IRQ
x86, irq: Make MSI and HT_IRQ indepenent of X86_IO_APIC
x86, irq: Move IRQ initialization routines from io_apic.c into vector.c
x86, irq: Move IOAPIC related declarations from hw_irq.h into io_apic.h
x86, irq: Move HT IRQ related code from io_apic.c into htirq.c
x86, irq: Move PCI MSI related code from io_apic.c into msi.c
x86, irq: Replace printk(KERN_LVL) with pr_lvl() utilities
x86, irq: Make UP version of irq_complete_move() an inline stub
x86, irq: Move local APIC related code from io_apic.c into vector.c
x86, irq: Introduce helpers to access struct irq_cfg
x86, irq: Protect __clear_irq_vector() with vector_lock
x86, irq: Rename local APIC related functions in io_apic.c as apic_xxx()
x86, irq: Refine hw_irq.h to prepare for irqdomain support
x86, irq: Convert irq_2_pin list to generic list
x86, irq: Kill useless parameter 'irq_attr' of IO_APIC_get_PCI_irq_vector()
x86, irq, acpi: Get rid of special handling of GSI for ACPI SCI
x86, irq: Introduce helper to check whether an IOAPIC has been registered
... -
Having switched over all of the users of CONFIG_PM_RUNTIME to use
CONFIG_PM directly, turn the latter into a user-selectable option
and drop the former entirely from the tree.Signed-off-by: Rafael J. Wysocki
Reviewed-by: Ulf Hansson
Acked-by: Kevin Hilman -
Pull x86 MPX fixes from Thomas Gleixner:
"Three updates for the new MPX infrastructure:
- Use the proper error check in the trap handler
- Add a proper config option for it
- Bring documentation up to date"* 'x86-mpx-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86, mpx: Give MPX a real config option prompt
x86, mpx: Update documentation
x86_64/traps: Fix always true condition -
Pull x86 fix from Ingo Molnar:
"This contains a single TLS ABI validation fix from Andy Lutomirski"* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/tls: Don't validate lm in set_thread_area() after all
