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The new usage of determine_rate and set_rate_and_parent calls for
OMAP DPLLs assumes the DPLLs must have two parents defined, even
if it is the same clock. Legacy clock data did not fullfill this
requirement and caused a boot crash. Fixed by adding the missing
parent information to the DPLL clocks.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Fixes: 2e1a7b014f ("ARM: OMAP3+: DPLL: use determine_rate() and...")
Cc: Paul Walmsley <paul@pwsan.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Tested-by: Kevin Hilman <khilman@linaro.org>
Reported-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Michael Turquette <mturquette@linaro.org>
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While the change for determine_rate clock operation was merged,
the OMAP counterpart using these calls was overlooked for some reason,
and caused boot failures on at least OMAP4 platforms. Fixed by updating
the DPLL API calls to use the new parameters.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Fixes: 646cafc6aa ("clk: Change clk_ops->determine_rate")
Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Paul Walmsley <paul@pwsan.com>
Tested-by: Kevin Hilman <khilman@linaro.org>
Reported-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Michael Turquette <mturquette@linaro.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending into tmp
Some OMAP clock/hwmod patches for v3.19.
Most of the patches are clock-related. The DPLL implementation is
changed to better align to the common clock framework.
There is also a patch that removes a few lines from the hwmod code -
this patch should have no functional effect.
Basic build, boot, and PM test logs for these patches can be found here:
http://www.pwsan.com/omap/testlogs/omap-a-for-v3.19/20141113094101/
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This is in preparation for clock providers to not have to deal with struct clk.
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Michael Turquette <mturquette@linaro.org>
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https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into clk-next
Allwinner Clocks additions for 3.19
A few patches that should go through the clock tree, mostly fixes, cleanups,
and new clocks additions to start to support the A80.
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The apb2 clocks are actually the same as apb1 clocks on the other sunxi
platforms, hence compatible with "allwinner,sun4i-a10-apb1-clk".
Update the dtsi to use the new unified apb1 clk.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
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With the new factors infrastructure in place, we can unify apb1 and
apb1_mux as a single clock now.
Signed-off-by: Emilio López <emilio@elopez.com.ar>
[wens@csie.org: Change apb1 node label to "apb1"; reword commit title]
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
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ml->node and sl->node are currently initialized
by means of INIT_LIST_HEAD(). That initialiation
is followed by a list_add() call.
Looking at what both these functions do we will have:
ml->node.next = &ml->node;
ml->node.prev = &ml->node;
oi->master->master_ports.next.prev = &ml->node;
ml->node.next = &oi->master->master_ports.next;
ml->node.prev = &oi->master->master_ports;
oi->master->master_ports.next = &ml->node;
from this, it's clear that both INIT_LIST_HEAD() calls
are unnecessary and can be safely removed.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
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Currently, DPLLs are hiding the gory details of switching parent
within set_rate, which confuses the common clock code and is wrong.
Fixed by applying the new determine_rate() and set_rate_and_parent()
functionality to any clock-ops previously using the broken approach.
This patch also removes the broken legacy code.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
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Expand the support of omap4 per-dpll to provide set_rate_and_parent.
This is required for proper behavior of clk_change_rate with
determine_rate support.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
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Similarly to OMAP3 noncore DPLL, the implementation of this DPLL clock
type is wrong. This patch adds basic functionality for determine_rate
for this clock type which will be taken into use in the patches following
later.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
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Currently, DPLL code hides the re-parenting within its internals, which
is wrong. This needs to be exposed to the common clock code via
determine_rate and set_rate_and_parent APIs. This patch adds support
for these, which will be taken into use in the following patches.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
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DPLL4 can't be reprogrammed on OMAP3430 ES1.0 due to hardware limitation.
Currently, the code does runtime omap_rev() check to see the chip it is
being executed on, instead, change this to use clk_features flags.
This avoids need for runtime omap_rev() checks.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
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Change the dtsi and dts file, soc initialization code to make
use of DT support clock.
So now in the code we do only need call of_clk_init to initialize
the clocks.
Signed-off-by: Chao Xie <chao.xie@marvell.com>
Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: Michael Turquette <mturquette@linaro.org>
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Add items in arch/arm/boot/dt/Makefile to compile the dtb
for mach-mmp.
Change the dts and dtsi file to use #include instead of \include\
Signed-off-by: Chao Xie <chao.xie@marvell.com>
Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: Michael Turquette <mturquette@linaro.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- enable bpf syscall for compat
- cpu_suspend fix when checking the idle state type
- defconfig update
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: defconfig: update defconfig for 3.18
arm64: compat: Enable bpf syscall
arm64: psci: fix cpu_suspend to check idle state type for index
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"Another quiet week:
- a fix to silence edma probe error on non-supported platforms from
Arnd
- a fix to enable the PL clock for Parallella, to make mainline
usable with the SDK.
- a somewhat verbose fix for the PLL clock tree on VF610
- enabling of SD/MMC on one of the VF610-based boards (for testing)
- a fix for i.MX where CONFIG_SPI used to be implicitly enabled and
now needs to be added to the defconfig instead
- another maintainer added for bcm2835: Lee Jones"
* tag 'armsoc-for-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: dts: zynq: Enable PL clocks for Parallella
dma: edma: move device registration to platform code
ARM: dts: vf610: add SD node to cosmic dts
MAINTAINERS: update bcm2835 entry
ARM: imx: Fix the removal of CONFIG_SPI option
ARM: imx: clk-vf610: define PLL's clock tree
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The Parallella board comes with a U-Boot bootloader that loads one of
two predefined FPGA bitstreams before booting the kernel. Both define an
AXI interface to the on-board Epiphany processor.
Enable clocks FCLK0..FCLK3 for the Programmable Logic by default.
Otherwise accessing, e.g., the ESYSRESET register freezes the board,
as seen with the Epiphany SDK tools e-reset and e-hw-rev, using /dev/mem.
Cc: <stable@vger.kernel.org> # 3.17.x
Signed-off-by: Andreas Färber <afaerber@suse.de>
Acked-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
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Pull MIPS updates from Ralf Baechle:
"This weeks' round of MIPS bug fixes for 3.18:
- wire up the bpf syscall
- fix TLB dump output for R3000 class TLBs
- fix strnlen_user return value if no NUL character was found.
- fix build with binutils 2.24.51+. While there is no binutils 2.25
release yet, toolchains derived from binutils 2.24.51+ are already
in common use.
- the Octeon GPIO code forgot to offline GPIO IRQs.
- fix build error for XLP.
- fix possible BUG assertion with EVA for CMA"
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
MIPS: Fix build with binutils 2.24.51+
MIPS: R3000: Fix debug output for Virtual page number
MIPS: Fix strnlen_user() return value in case of overlong strings.
MIPS: CMA: Do not reserve memory if not required
MIPS: Wire up bpf syscall.
MIPS/Xlp: Remove the dead function destroy_irq() to fix build error
MIPS: Octeon: Make Octeon GPIO IRQ chip CPU hotplug-aware
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Starting with version 2.24.51.20140728 MIPS binutils complain loudly
about mixing soft-float and hard-float object files, leading to this
build failure since GCC is invoked with "-msoft-float" on MIPS:
{standard input}: Warning: .gnu_attribute 4,3 requires `softfloat'
LD arch/mips/alchemy/common/built-in.o
mipsel-softfloat-linux-gnu-ld: Warning: arch/mips/alchemy/common/built-in.o
uses -msoft-float (set by arch/mips/alchemy/common/prom.o),
arch/mips/alchemy/common/sleeper.o uses -mhard-float
To fix this, we detect if GAS is new enough to support "-msoft-float" command
option, and if it does, we can let GCC pass it to GAS; but then we also need
to sprinkle the files which make use of floating point registers with the
necessary ".set hardfloat" directives.
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Cc: Linux-MIPS <linux-mips@linux-mips.org>
Cc: Matthew Fortune <Matthew.Fortune@imgtec.com>
Cc: Markos Chandras <Markos.Chandras@imgtec.com>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/8355/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Virtual page number of R3000 in entryhi is 20 bit from MSB. But in
dump_tlb(), the bit mask to read it from entryhi is 19 bit (0xffffe000).
The patch fixes that to 0xfffff000.
Signed-off-by: Isamu Mogi <isamu@leafytree.jp>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/8290/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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The horrible split between the low-level part of the edma support
and the dmaengine front-end driver causes problems on multiplatform
kernels. This is an attempt to improve the situation slightly
by only registering the dmaengine devices that are actually
present.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
[olof: add missing include of linux/dma-mapping.h]
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Olof Johansson <olof@lixom.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 update from Martin Schwidefsky:
"One small improvement for the cputime accounting, two bug fixes and an
update for the default configuration files"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/ftrace: add ftrace_graph_is_dead() check
s390: update default configuration
s390/vdso: fix stack corruption
s390/time: use stck clock fast for do_account_vtime
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Driver has been there since a while back, but the dts never seems to
have been updated with the node (nor pinctrl). Do so now.
Cc: Matt Porter <mporter@linaro.org>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Olof Johansson <olof@lixom.net>
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This patch enables a few things missing from our defconfig:
- PCI and MSI, including support for the x-gene host controller
- BPF JIT
- SPI, GPIO and MMC for Seattle
- GPIO for x-gene
- USB for Juno
- RTC
It also removes HMC_DRV, which was being built as a module for some
reason.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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Following the arm32 commit 2d605a302972 (ARM: enable bpf syscall), wire
this syscall for arm64 compat as well.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into fixes
Merge "ARM: imx: fixes for 3.18, 2nd round" from Shawn Guo:
"This is the second round of i.MX fixes for 3.18. The clk-vf610 fix is
relatively big, because it needs some adaption to the change made by
offending commit dc4805c2e78b (ARM: imx: remove ENABLE and BYPASS bits
from clk-pllv3 driver). And it should have been sent to you for earlier
-rc inclusion, but unfortunately it got delayed for some time because
Stefan wasn't aware of my email address change."
The i.MX fixes for 3.18, 2nd round:
- Fix a regression on Vybrid platform which is caused by commit
dc4805c2e78b (ARM: imx: remove ENABLE and BYPASS bits from clk-pllv3
driver), and results in a missing configuration on PLL clocks.
- Fix a regression with i.MX defconfig files where CONFIG_SPI option
gets lost accidentally.
* tag 'imx-fixes-3.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux: (460 commits)
ARM: imx: Fix the removal of CONFIG_SPI option
ARM: imx: clk-vf610: define PLL's clock tree
+ Linux 3.18-rc3
Signed-off-by: Olof Johansson <olof@lixom.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux
Pull powerpc fixes from Michael Ellerman:
"Some more powerpc fixes if you please"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux:
powerpc: use device_online/offline() instead of cpu_up/down()
powerpc/powernv: Properly fix LPC debugfs endianness
powerpc: do_notify_resume can be called with bad thread_info flags argument
powerpc/fadump: Fix endianess issues in firmware assisted dump handling
powerpc: Fix section mismatch warning
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We were returning maxlen like the userland strnlen if no '\0' character
was encountered while the kernel version is expected to return a value
larger than maxlen. Fixed to return maxlen + 1.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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Since 64546e9fe3a5b8c ("ARM: imx_v6_v7_defconfig updates") and commit
0650f855d2e4b0b9 ("ARM: imx_v4_v5_defconfig: Select CONFIG_IMX_WEIM") CONFIG_SPI
selection was dropped by savedefconfig for imx_v4_v5_defconfig and
imx_v6_v7_defconfig.
In order to keep the same behaviour as previous kernel versions and avoid
regressions, let's add CONFIG_SPI option back.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
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So far, the required PLL's (PLL1/PLL2/PLL5) have been initialized
by boot loader and the kernel code defined fixed rates according
to those default configurations. Beginning with the USB PLL7 the
code started to initialize the PLL's itself (using imx_clk_pllv3).
However, since commit dc4805c2e78ba5a22ea1632f3e3e4ee601a1743b
(ARM: imx: remove ENABLE and BYPASS bits from clk-pllv3 driver)
imx_clk_pllv3 no longer takes care of the ENABLE and BYPASS bits,
hence the USB PLL were not configured correctly anymore.
This patch not only fixes those USB PLL's, but also makes use of
the imx_clk_pllv3 for all PLL's and alignes the code with the PLL
support of the i.MX6 series.
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k
Pull m68k update from Geert Uytterhoeven.
Just wiring up the bpf system call.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
m68k: Wire up bpf
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"A surprisingly small batch of fixes for -rc3. Suspiciously small, I'd
say.
Anyway, most of this are a few defconfig updates. Some for omap to
deal with kernel binary size (moving ipv6 to module, etc). A larger
one for socfpga that refreshes with some churn, but also turns on a
few options that makes the newly-added board in my bootfarm usable for
testing.
OMAP3 will also now warn when booted with legacy (non-DT) boot
protocols, hopefully encouraging those who still care about some of
those platforms to submit DT support and report bugs where needed.
Nothing stops working though, this is just to warn for future
deprecation.
Beyond this, very few actual bugfixes. A PXA fix for DEBUG_LL boot
hangs, a missing terminting entry in a dt_match array on RealView a
MTD fix on OMAP with NAND"
[ Obviously missed rc3, will make rc4 instead ;) ]
* tag 'armsoc-for-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
MAINTAINERS: drop list entry for davinci
ARM: OMAP2+: Warn about deprecated legacy booting mode
ARM: omap2plus_defconfig: Fix errors with NAND BCH
ARM: multi_v7_defconfig: fix support for APQ8084
soc: versatile: Add terminating entry for realview_soc_of_match
ARM: ixp4xx: remove compilation warnings in io.h
MAINTAINERS: Add Soren as reviewer for Zynq
ARM: omap2plus_defconfig: Fix bloat caused by having ipv6 built-in
ARM: socfpga_defconfig: Update defconfig for SoCFPGA
ARM: pxa: fix hang on startup with DEBUG_LL
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git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
Merge "omap fixes against v3.18-rc2" from Tony Lindgren:
Few fixes for omaps to enable NAND BCH so devices won't
produce errors when booted with omap2plus_defconfig, and
reduce bloat by making IPV6 a loadable module.
Also let's add a warning about legacy boot being deprecated
for omap3.
We now have things working with device tree, and only omap3 is
still booting in legacy mode. So hopefully this warning will
help move the remaining legacy mode users to boot with device
tree.
As the total reduction of code and static data is somewhere
around 20000 lines of code once we remove omap3 legacy mode
booting, we really do want to make omap3 to boot also in
device tree mode only over the next few merge cycles.
* tag 'fixes-against-v3.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: (407 commits)
ARM: OMAP2+: Warn about deprecated legacy booting mode
ARM: omap2plus_defconfig: Fix errors with NAND BCH
ARM: omap2plus_defconfig: Fix bloat caused by having ipv6 built-in
+ Linux 3.18-rc2
Signed-off-by: Olof Johansson <olof@lixom.net>
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Pull ARM fixes from Russell King:
- add the new bpf syscall to ARM.
- drop a redundant return statement in __iommu_alloc_remap()
- fix a performance issue noticed by Thomas Petazzoni with
kmap_atomic().
- fix an issue with the L2 cache OF parsing code which caused it to
incorrectly print warnings on each boot, and make the warning text
more consistent with the rest of the code
* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
ARM: 8180/1: mm: implement no-highmem fast path in kmap_atomic_pfn()
ARM: 8183/1: l2c: Improve l2c310_of_parse() error message
ARM: 8181/1: Drop extra return statement
ARM: 8182/1: l2c: Make l2x0_cache_size_of_parse() return 'int'
ARM: enable bpf syscall
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Pull kvm fixes from Paolo Bonzini:
"A small set of x86 fixes. The most serious is an SRCU lockdep fix.
A bit late - needed some time to test the SRCU fix, which only came in
on Friday"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: vmx: defer load of APIC access page address during reset
KVM: nVMX: Disable preemption while reading from shadow VMCS
KVM: x86: Fix far-jump to non-canonical check
KVM: emulator: fix execution close to the segment limit
KVM: emulator: fix error code for __linearize
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Most call paths to vmx_vcpu_reset do not hold the SRCU lock. Defer loading
the APIC access page to the next vmentry.
This avoids the following lockdep splat:
[ INFO: suspicious RCU usage. ]
3.18.0-rc2-test2+ #70 Not tainted
-------------------------------
include/linux/kvm_host.h:474 suspicious rcu_dereference_check() usage!
other info that might help us debug this:
rcu_scheduler_active = 1, debug_locks = 0
1 lock held by qemu-system-x86/2371:
#0: (&vcpu->mutex){+.+...}, at: [<ffffffffa037d800>] vcpu_load+0x20/0xd0 [kvm]
stack backtrace:
CPU: 4 PID: 2371 Comm: qemu-system-x86 Not tainted 3.18.0-rc2-test2+ #70
Hardware name: Dell Inc. OptiPlex 9010/0M9KCM, BIOS A12 01/10/2013
0000000000000001 ffff880209983ca8 ffffffff816f514f 0000000000000000
ffff8802099b8990 ffff880209983cd8 ffffffff810bd687 00000000000fee00
ffff880208a2c000 ffff880208a10000 ffff88020ef50040 ffff880209983d08
Call Trace:
[<ffffffff816f514f>] dump_stack+0x4e/0x71
[<ffffffff810bd687>] lockdep_rcu_suspicious+0xe7/0x120
[<ffffffffa037d055>] gfn_to_memslot+0xd5/0xe0 [kvm]
[<ffffffffa03807d3>] __gfn_to_pfn+0x33/0x60 [kvm]
[<ffffffffa0380885>] gfn_to_page+0x25/0x90 [kvm]
[<ffffffffa038aeec>] kvm_vcpu_reload_apic_access_page+0x3c/0x80 [kvm]
[<ffffffffa08f0a9c>] vmx_vcpu_reset+0x20c/0x460 [kvm_intel]
[<ffffffffa039ab8e>] kvm_vcpu_reset+0x15e/0x1b0 [kvm]
[<ffffffffa039ac0c>] kvm_arch_vcpu_setup+0x2c/0x50 [kvm]
[<ffffffffa037f7e0>] kvm_vm_ioctl+0x1d0/0x780 [kvm]
[<ffffffff810bc664>] ? __lock_is_held+0x54/0x80
[<ffffffff812231f0>] do_vfs_ioctl+0x300/0x520
[<ffffffff8122ee45>] ? __fget+0x5/0x250
[<ffffffff8122f0fa>] ? __fget_light+0x2a/0xe0
[<ffffffff81223491>] SyS_ioctl+0x81/0xa0
[<ffffffff816fed6d>] system_call_fastpath+0x16/0x1b
Reported-by: Takashi Iwai <tiwai@suse.de>
Reported-by: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Reviewed-by: Wanpeng Li <wanpeng.li@linux.intel.com>
Tested-by: Wanpeng Li <wanpeng.li@linux.intel.com>
Fixes: 38b9917350cb2946e368ba684cfc33d1672f104e
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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In order to access the shadow VMCS, we need to load it. At this point,
vmx->loaded_vmcs->vmcs and the actually loaded one start to differ. If
we now get preempted by Linux, vmx_vcpu_put and, on return, the
vmx_vcpu_load will work against the wrong vmcs. That can cause
copy_shadow_to_vmcs12 to corrupt the vmcs12 state.
Fix the issue by disabling preemption during the copy operation.
copy_vmcs12_to_shadow is safe from this issue as it is executed by
vmx_vcpu_run when preemption is already disabled before vmentry.
This bug is exposed by running Jailhouse within KVM on CPUs with
shadow VMCS support. Jailhouse never expects an interrupt pending
vmexit, but the bug can cause it if, after copy_shadow_to_vmcs12
is preempted, the active VMCS happens to have the virtual interrupt
pending flag set in the CPU-based execution controls.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Commit d1442d85cc30 ("KVM: x86: Handle errors when RIP is set during far
jumps") introduced a bug that caused the fix to be incomplete. Due to
incorrect evaluation, far jump to segment with L bit cleared (i.e., 32-bit
segment) and RIP with any of the high bits set (i.e, RIP[63:32] != 0) set may
not trigger #GP. As we know, this imposes a security problem.
In addition, the condition for two warnings was incorrect.
Fixes: d1442d85cc30ea75f7d399474ca738e0bc96f715
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Nadav Amit <namit@cs.technion.ac.il>
[Add #ifdef CONFIG_X86_64 to avoid complaints of undefined behavior. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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In powerpc pseries platform dlpar operations, use device_online() and
device_offline() instead of cpu_up() and cpu_down().
Calling cpu_up/down() directly does not update the cpu device offline
field, which is used to online/offline a cpu from sysfs. Calling
device_online/offline() instead keeps the sysfs cpu online value
correct. The hotplug lock, which is required to be held when calling
device_online/offline(), is already held when dlpar_online/offline_cpu()
are called, since they are called only from cpu_probe|release_store().
This patch fixes errors on phyp (PowerVM) systems that have cpu(s)
added/removed using dlpar operations; without this patch, the
/sys/devices/system/cpu/cpuN/online nodes do not correctly show the
online state of added/removed cpus.
Signed-off-by: Dan Streetman <ddstreet@ieee.org>
Cc: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Fixes: 0902a9044fa5 ("Driver core: Use generic offline/online for CPU offline/online")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Rusty noticed a Really Bad Bug (tm) in my NT fix. The entry code
reads out of bounds, causing the NT fix to be unreliable. But, and
this is much, much worse, if your stack is somehow just below the
top of the direct map (or a hole), you read out of bounds and crash.
Excerpt from the crash:
[ 1.129513] RSP: 0018:ffff88001da4bf88 EFLAGS: 00010296
2b:* f7 84 24 90 00 00 00 testl $0x4000,0x90(%rsp)
That read is deterministically above the top of the stack. I
thought I even single-stepped through this code when I wrote it to
check the offset, but I clearly screwed it up.
Fixes: 8c7aa698baca ("x86_64, entry: Filter RFLAGS.NT on entry from userspace")
Reported-by: Rusty Russell <rusty@ozlabs.org>
Cc: stable@vger.kernel.org
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Pull networking fixes from David Miller:
"A bit has accumulated, but it's been a week or so since my last batch
of post-merge-window fixes, so...
1) Missing module license in netfilter reject module, from Pablo.
Lots of people ran into this.
2) Off by one in mac80211 baserate calculation, from Karl Beldan.
3) Fix incorrect return value from ax88179_178a driver's set_mac_addr
op, which broke use of it with bonding. From Ian Morgan.
4) Checking of skb_gso_segment()'s return value was not all
encompassing, it can return an SKB pointer, a pointer error, or
NULL. Fix from Florian Westphal.
This is crummy, and longer term will be fixed to just return error
pointers or a real SKB.
6) Encapsulation offloads not being handled by
skb_gso_transport_seglen(). From Florian Westphal.
7) Fix deadlock in TIPC stack, from Ying Xue.
8) Fix performance regression from using rhashtable for netlink
sockets. The problem was the synchronize_net() invoked for every
socket destroy. From Thomas Graf.
9) Fix bug in eBPF verifier, and remove the strong dependency of BPF
on NET. From Alexei Starovoitov.
10) In qdisc_create(), use the correct interface to allocate
->cpu_bstats, otherwise the u64_stats_sync member isn't
initialized properly. From Sabrina Dubroca.
11) Off by one in ip_set_nfnl_get_byindex(), from Dan Carpenter.
12) nf_tables_newchain() was erroneously expecting error pointers from
netdev_alloc_pcpu_stats(). It only returna a valid pointer or
NULL. From Sabrina Dubroca.
13) Fix use-after-free in _decode_session6(), from Li RongQing.
14) When we set the TX flow hash on a socket, we mistakenly do so
before we've nailed down the final source port. Move the setting
deeper to fix this. From Sathya Perla.
15) NAPI budget accounting in amd-xgbe driver was counting descriptors
instead of full packets, fix from Thomas Lendacky.
16) Fix total_data_buflen calculation in hyperv driver, from Haiyang
Zhang.
17) Fix bcma driver build with OF_ADDRESS disabled, from Hauke
Mehrtens.
18) Fix mis-use of per-cpu memory in TCP md5 code. The problem is
that something that ends up being vmalloc memory can't be passed
to the crypto hash routines via scatter-gather lists. From Eric
Dumazet.
19) Fix regression in promiscuous mode enabling in cdc-ether, from
Olivier Blin.
20) Bucket eviction and frag entry killing can race with eachother,
causing an unlink of the object from the wrong list. Fix from
Nikolay Aleksandrov.
21) Missing initialization of spinlock in cxgb4 driver, from Anish
Bhatt.
22) Do not cache ipv4 routing failures, otherwise if the sysctl for
forwarding is subsequently enabled this won't be seen. From
Nicolas Cavallari"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (131 commits)
drivers: net: cpsw: Support ALLMULTI and fix IFF_PROMISC in switch mode
drivers: net: cpsw: Fix broken loop condition in switch mode
net: ethtool: Return -EOPNOTSUPP if user space tries to read EEPROM with lengh 0
stmmac: pci: set default of the filter bins
net: smc91x: Fix gpios for device tree based booting
mpls: Allow mpls_gso to be built as module
mpls: Fix mpls_gso handler.
r8152: stop submitting intr for -EPROTO
netfilter: nft_reject_bridge: restrict reject to prerouting and input
netfilter: nft_reject_bridge: don't use IP stack to reject traffic
netfilter: nf_reject_ipv6: split nf_send_reset6() in smaller functions
netfilter: nf_reject_ipv4: split nf_send_reset() in smaller functions
netfilter: nf_tables_bridge: update hook_mask to allow {pre,post}routing
drivers/net: macvtap and tun depend on INET
drivers/net, ipv6: Select IPv6 fragment idents for virtio UFO packets
drivers/net: Disable UFO through virtio
net: skb_fclone_busy() needs to detect orphaned skb
gre: Use inner mac length when computing tunnel length
mlx4: Avoid leaking steering rules on flow creation error flow
net/mlx4_en: Don't attempt to TX offload the outer UDP checksum for VXLAN
...
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Pull sparc update from David Miller:
"Two changes:
1) It makes no sense to execute a VTOC partition table request in the
Sun virtual block device driver and fail to load if it doesn't
succeed because a) we don't use the result at all and b) it won't
succeed if there is an EFI partition on the disk, for example.
We read the partition table via the normal means in the block layer
anyways, so this is really completely useless, so just remove it.
From Dwight Engen.
2) Hook up new bpf system call"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
sunvdc: don't call VD_OP_GET_VTOC
sparc: Hook up bpf system call.
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Pull Microblaze updates from Michal Simek:
- wire-up new bpf syscall
- fix PCI bug
- fix Kconfig warning
* tag 'microblaze-3.18-rc3' of git://git.monstr.eu/linux-2.6-microblaze:
microblaze: Wire up bpf syscall
microblaze: Fix IO space breakage after of_pci_range_to_resource() change
microblaze: Fix missing NR_CPUS in menuconfig
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
"Fixes from all around the place:
- hyper-V 32-bit PAE guest kernel fix
- two IRQ allocation fixes on certain x86 boards
- intel-mid boot crash fix
- intel-quark quirk
- /proc/interrupts duplicate irq chip name fix
- cma boot crash fix
- syscall audit fix
- boot crash fix with certain TSC configurations (seen on Qemu)
- smpboot.c build warning fix"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86, pageattr: Prevent overflow in slow_virt_to_phys() for X86_PAE
ACPI, irq, x86: Return IRQ instead of GSI in mp_register_gsi()
x86, intel-mid: Create IRQs for APB timers and RTC timers
x86: Don't enable F00F workaround on Intel Quark processors
x86/irq: Fix XT-PIC-XT-PIC in /proc/interrupts
x86, cma: Reserve DMA contiguous area after initmem_init()
i386/audit: stop scribbling on the stack frame
x86, apic: Handle a bad TSC more gracefully
x86: ACPI: Do not translate GSI number if IOAPIC is disabled
x86/smpboot: Move data structure to its primary usage scope
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar:
"Various scheduler fixes all over the place: three SCHED_DL fixes,
three sched/numa fixes, two generic race fixes and a comment fix"
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/dl: Fix preemption checks
sched: Update comments for CLONE_NEWNS
sched: stop the unbound recursion in preempt_schedule_context()
sched/fair: Fix division by zero sysctl_numa_balancing_scan_size
sched/fair: Care divide error in update_task_scan_period()
sched/numa: Fix unsafe get_task_struct() in task_numa_assign()
sched/deadline: Fix races between rt_mutex_setprio() and dl_task_timer()
sched/deadline: Don't replenish from a !SCHED_DEADLINE entity
sched: Fix race between task_group and sched_task_group
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
"Mostly tooling fixes, plus on the kernel side:
- a revert for a newly introduced PMU driver which isn't complete yet
and where we ran out of time with fixes (to be tried again in
v3.19) - this makes up for a large chunk of the diffstat.
- compilation warning fixes
- a printk message fix
- event_idx usage fixes/cleanups"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf probe: Trivial typo fix for --demangle
perf tools: Fix report -F dso_from for data without branch info
perf tools: Fix report -F dso_to for data without branch info
perf tools: Fix report -F symbol_from for data without branch info
perf tools: Fix report -F symbol_to for data without branch info
perf tools: Fix report -F mispredict for data without branch info
perf tools: Fix report -F in_tx for data without branch info
perf tools: Fix report -F abort for data without branch info
perf tools: Make CPUINFO_PROC an array to support different kernel versions
perf callchain: Use global caching provided by libunwind
perf/x86/intel: Revert incomplete and undocumented Broadwell client support
perf/x86: Fix compile warnings for intel_uncore
perf: Fix typos in sample code in the perf_event.h header
perf: Fix and clean up initialization of pmu::event_idx
perf: Fix bogus kernel printk
perf diff: Add missing hists__init() call at tool start
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With legacy booting, the platform init code was taking care of
the configuring of GPIOs. With device tree based booting, things
may or may not work depending what bootloader has configured or
if the legacy platform code gets called.
Let's add support for the pwrdn and reset GPIOs to the smc91x
driver to fix the issues of smc91x not working properly when
booted in device tree mode.
And let's change n900 to use these settings as some versions
of the bootloader do not configure things properly causing
errors.
Reported-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Endian is hard, especially when I designed a stupid FW interface, and
I should know better... oh well, this is attempt #2 at fixing this
properly. This time it seems to work with all access sizes and I
can run my flashing tool (which exercises all sort of access sizes
and types to access the SPI controller in the BMC) just fine.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: stable@vger.kernel.org
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Back in 7230c5644188 ("powerpc: Rework lazy-interrupt handling") we
added a call out to restore_interrupts() (written in c) before calling
do_notify_resume:
bl restore_interrupts
addi r3,r1,STACK_FRAME_OVERHEAD
bl do_notify_resume
Unfortunately do_notify_resume takes two arguments, the second one
being the thread_info flags:
void do_notify_resume(struct pt_regs *regs, unsigned long thread_info_flags)
We do populate r4 (the second argument) earlier, but
restore_interrupts() is free to muck it up all it wants. My guess is
the gcc compiler gods shone down on us and its register allocator
never used r4. Sometimes, rarely, luck is on our side.
LLVM on the other hand did trample r4.
Signed-off-by: Anton Blanchard <anton@samba.org>
Cc: stable@vger.kernel.org
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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