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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC cleanups from Arnd Bergmann:
"The cleanups for v4.9 are a little larger that usual, but thankfully
that is almost exclusively due to removing a significant number of
files that have become obsolete after the still ongoing conversion of
old board files to devicetree.
- for mach-omap2, which is still the largest platform in arch/arm/,
the conversion to DT is finally complete after the Nokia N900 is
now fully supported there, along with the omap3 LDP, and we can
remove those two board files. If no regressions are found, another
large cleanup for the platform will happen as a follow-up, removing
dead code and restructuring the platform based on being DT-only.
- In mach-imx, similar work is ongoing, but has not come that far.
This time, we remove the obsolete board file for the i.MX1
generation, which like i.MX25, i.MX5, i.MX6, and i.MX7 is now
DT-only. The remaining board files are for i.MX2 and i.MX3 machines
based on old ARM926 or ARM1136 cores that should work with DT in
principle.
- realview has just been converted from board files to DT, and a lot
of code gets removed in the process. This is the last
ARM/Keil/Versatile derived platform that was still using board
files, the other ones being integrator, versatile and vexpress. We
can probably merge the remaining code into a single directory in
the near future.
- clps711x had completed the conversion in v4.8, but we accidentally
left the files in place that should have been deleted then"
* tag 'armsoc-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (21 commits)
ARM: select PCI_DOMAINS config from ARCH_MULTIPLATFORM
ARM: stop *MIGHT_HAVE_PCI* config from being selected redundantly
ARM: imx: (trivial) fix typo and grammar
ARM: clps711x: remove extraneous files
ARM: imx: use IS_ENABLED() instead of checking for built-in or module
ARM: OMAP2+: use IS_ENABLED() instead of checking for built-in or module
ARM: OMAP1: use IS_ENABLED() instead of checking for built-in or module
ARM: imx: remove platform-mxc_rnga
ARM: realview: imply device tree boot
ARM: realview: no need to select SMP_ON_UP explicitly
ARM: realview: delete the RealView board files
ARM: imx: no need to select SMP_ON_UP explicitly
ARM: i.MX: Move SOC_IMX1 into 'Device tree only'
ARM: i.MX: Remove i.MX1 non-DT support
ARM: i.MX: Remove i.MX1 Synertronixx SCB9328 board support
ARM: i.MX: Remove i.MX1 Armadeus APF9328 board support
ARM: mxs: remove obsolete startup code for TX28
ARM: i.MX31 iomux: remove duplicates with alternate name
ARM: i.MX31 iomux: remove plain duplicates
ARM: OMAP2+: Drop legacy board file for LDP
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PCI_DOMAINS config should be selected for any SoCs
having more than a single PCIe controller. Without PCI_DOMAINS
config, only one PCIe controller gets registered.
Select PCI_DOMAINS in ARCH_MULTIPLATFORM if PCI is selected, since
it doesn't harm even if a platform has a single PCIe port.
Also remove PCI_DOMAINS being selected from other platform
specific configs.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Acked-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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*MIGHT_HAVE_PCI* config is already selected in ARCH_MULTIPLATFORM.
Don't select it redundantly in all ARCH_MULTIPLATFORM based machines.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into next/cleanup
Pull "i.MX cleanup for 4.9" from Shawn Guo:
- Drop i.MX1 board files and make i.MX1 a DT only platform.
- Remove obsolete ENET initialization code for TX28 board, since FEC
driver handles those setup well now.
- A couple of cleanups on i.MX31 IOMUX headers to drop duplications
- A few other random and trivial cleanups
* tag 'imx-cleanup-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
ARM: imx: (trivial) fix typo and grammar
ARM: imx: use IS_ENABLED() instead of checking for built-in or module
ARM: imx: remove platform-mxc_rnga
ARM: imx: no need to select SMP_ON_UP explicitly
ARM: i.MX: Move SOC_IMX1 into 'Device tree only'
ARM: i.MX: Remove i.MX1 non-DT support
ARM: i.MX: Remove i.MX1 Synertronixx SCB9328 board support
ARM: i.MX: Remove i.MX1 Armadeus APF9328 board support
ARM: mxs: remove obsolete startup code for TX28
ARM: i.MX31 iomux: remove duplicates with alternate name
ARM: i.MX31 iomux: remove plain duplicates
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Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Reviewed-by: Joshua Clayton <stillcompiling@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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The IS_ENABLED() macro checks if a Kconfig symbol has been enabled either
built-in or as a module, use that macro instead of open coding the same.
Using the macro makes the code more readable by helping abstract away some
of the Kconfig built-in and module enable details.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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According to commit c9ee94965dce
("ARM: imx: deconstruct mxc_rnga initialization")
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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SMP_ON_UP is already defaulted to "y" and has all dependencies expressed
- no need to select it per platform level
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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This patch moves SOC_IMX1 into 'Device tree only' category and renames
imx1-dt.c to mach-imx1.c to align with the name schema of other
i.MX DT only platforms.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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This patch removes registration helpers and support files,
used for non-DT i.MX1 targets.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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Synertronixx SCB9328 board is very similar to Armadeus APF9328,
so it can be easily reimplemented in DT way.
This patch removes support for non-DT support for this board.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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mach-apf9328.c can be replaced with devicetree equivalent: imx1-apf9328.dts,
so remove the board file.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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The power and reset handling of the FEC ethernet driver is sufficient
to get the ethernet PHY on the TX28 into a usable state.
Remove the code that does the PHY initialization on startup.
Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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Three iomux were accessinble with two distinct names, typo?
Remove the unused duplicates and fix the typo.
Signed-off-by: Alexander Kurz <akurz@blala.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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No need to define some of the iomux twice, remove the duplicates.
Signed-off-by: Alexander Kurz <akurz@blala.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/cleanup
Merge "omap soc updates for v4.9 merge window" from Tony Lindgren:
Two patches from Javier Martinez Canillas <javier@osg.samsung.com>
to update mach-omap1 and mach-oamp2 to use IS_ENABLED macro.
* tag 'omap-for-v4.9/soc-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP2+: use IS_ENABLED() instead of checking for built-in or module
ARM: OMAP1: use IS_ENABLED() instead of checking for built-in or module
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The IS_ENABLED() macro checks if a Kconfig symbol has been enabled either
built-in or as a module, use that macro instead of open coding the same.
Using the macro makes the code more readable by helping abstract away some
of the Kconfig built-in and module enable details.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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The IS_ENABLED() macro checks if a Kconfig symbol has been enabled either
built-in or as a module, use that macro instead of open coding the same.
Using the macro makes the code more readable by helping abstract away some
of the Kconfig built-in and module enable details.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/cleanup
Merge "drop last omap3 board files for v4.8" from Tony Lindgren:
Remove the last two legacy board-*.c files for omap3 for legacy
booting for v4.8 to allow making mach-omap2 device tree only for
v4.9.
We've had Nokia N900 and omap3 LDP board-*.c files remaining
while other omap3 devices have been device tree only for quite
a while now. Also N900 and LDP have had device tree based booting
working for years now, but few drivers for N900 were still only
working in legacy only mode until recently. With the remaining
issues out of the way, we discussed on the mailing lists that
we're finally OK to remove the remaining board-*.c files.
For the timing of this pull request, I wanted to wait until
v4.8-rc1 is out to make sure the legacy booting still works fine
after the merge window before doing it.
And for v4.8, let's not touch any other platform data in case we
still need to revert for some reason. This makes the revert just a
question of adding back the legacy board-*.c files.
Then if no issues, we can remove the unused remaining platform
data later on for v4.9.
* tag 'omap-for-v4.8/legacy-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP2+: Drop legacy board file for LDP
ARM: OMAP2+: Drop legacy board file for n900
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Let's drop the last two remaining omap3 legacy boot board files.
Let's only use the device tree based booting known to work for
these two boards.
We still have two omap3 boards booting in legacy mode in addition
to device tree based booting. All the other ten or so omap2+ SoCs
have been booting using device tree mode only for years now. This
has allowed us to get rid of quite a bit of arch/arm/mach-omap2
related platform init code in favor of dts and driver changes.
Pretty much the only remaining known users for omap3 legacy boot
board files are Kevin's and Russell's boot test systems, and N900
kernel tree maintained by Pali and Ivaylo. And all of them are
also supporting the device tree based booting. The legacy booting
mode has been kept around mostly to verify against regressions.
As there is still a slim chance of possible other uses of the
mainline kernel for these boards, let's just drop the board
files for v4.8, and let's not touch the related platform init
code until around v4.9 time if no issues are found. This makes
it trivial for us to add back the board files with a simple revert.
Signed-off-by: Tony Lindgren <tony@atomide.com>
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Let's drop the last two remaining omap3 legacy boot board files.
Let's only use the device tree based booting known to work for
these two boards.
We still have two omap3 boards booting in legacy mode in addition
to device tree based booting. All the other ten or so omap2+ SoCs
have been booting using device tree mode only for years now. This
has allowed us to get rid of quite a bit of arch/arm/mach-omap2
related platform init code in favor of dts and driver changes.
Pretty much the only remaining known users for omap3 legacy boot
board files are Kevin's and Russell's boot test systems, and N900
kernel tree maintained by Pali and Ivaylo. And all of them are
also supporting the device tree based booting. The legacy booting
mode has been kept around mostly to verify against regressions.
As there is still a slim chance of possible other uses of the
mainline kernel for these boards, let's just drop the board
files for v4.8, and let's not touch the related platform init
code until around v4.9 time if no issues are found. This makes
it trivial for us to add back the board files with a simple revert.
Acked-By: Sebastian Reichel <sre@kernel.org>
Acked-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Acked-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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omap-for-v4.8/legacy
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We removed support for board files in clps711x in Linux-4.8, but
I accidentally left the unused files behind. Let's kill them
off for real this time.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator into next/cleanup
Merge "delete the RealView boardfiles" from Linus Walleij:
This deletes the realview boardfiles, consolidates a bit
around the Kconfig options and leaves the mach-realview
directory nice and tidy, with all boards migrated over to
Device Tree.
* tag 'realview-broomstick-sweep' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator:
ARM: realview: imply device tree boot
ARM: realview: no need to select SMP_ON_UP explicitly
ARM: realview: delete the RealView board files
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This reduces the Kconfig for the RealView by assuming we are
always booting from the device tree, and removing all the uses
of CONFIG_REALVIEW_DT and replacing with CONFIG_ARCH_REALVIEW.
Further:
- Drop REALVIEW_HIGH_PHYS_OFFSET: we don't use this with device
tree.
- Drop the REALVIEW_EB_ARM11MP_REVB option: we now handle this
by simply using another device tree.
- Drop the PB1176 secure flash option: this is defined in the
PB1176 device tree but marked as "disabled", so users who
want to use it can simply enable it in the device tree and
go hacking around.
Cc: Brian Norris <computersforpeace@gmail.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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SMP_ON_UP is already defaulted to "y" and has all dependencies expressed
- no need to select it per platform level
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The device tree boot is now feature-complete and fully working,
so remove all the RealView board files. Move the remaining
realview_cpu_die() function frome "core.h" to the new "hotplug.h"
and leave just a minimal device tree core.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input subsystem updates from Dmitry Torokhov:
"You will get
- a new driver for Elan eKTF2127 touchscreen controllers
- a new "gpio-decoder" driver to read and report state of several
GPIO lines
- an ADC resistor ladder driver
- the ft6326 driver is removed because edt-ft5x06 handles the same
devices just fine.
.. plus the regular slew of driver fixes/enhancements"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (26 commits)
Input: elan_i2c - fix return tests of i2c_smbus_read_block_data()
Input: ektf2127 - mark PM functions as __maybe_unused
Input: snvs_pwrkey - drop input_free_device call if input_register_device fails
Input: add support for Elan eKTF2127 touchscreen controller
Input: serio - add hangup support
Input: tps65218-pwrbutton - add support for tps65217 variant
Input: jornada720_ts - get rid of mach/irqs.h and mach/hardware.h includes
Input: jornada720_kbd - remove unneeded mach/hardware.h include
Input: focaltech - mark focaltech_set_resolution() static
Input: wdt87xx_i2c - fix the flash erase issue
Input: gpio-keys-polled - don't use unit-address with button nodes
Input: add generic input driver to read encoded GPIO lines
Input: add ADC resistor ladder driver
Input: pegasus_notetaker - directly include workqueue header
Input: elants_i2c - get product id on recovery mode for FW update
Input: wm97xx - remove deprecated create_singletheread_workqueue
Input: mc13783_ts - remove deprecated create_singletheread_workqueue
Input: psmouse - remove deprecated create_singletheread_workqueue
Input: jornada720_kbd - switch to using dev_dbg
Input: jornada720_kbd - get rid of mach/irqs.h include
...
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Switch the jornada720 touchscreen driver to obtain its gpio from
the platform device via gpiolib and derive the interrupt from the
GPIO, rather than via a hard-coded interrupt number obtained from
the mach/irqs.h and mach/hardware.h headers.
Tested-by: Adam Wysocki <armlinux@chmurka.net>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Switch the jornada720 keyboard driver to obtain its interrupt from the
platform device, rather than via a hard-coded interrupt number obtained
from the mach/irqs.h header.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Let's bring in HDMI CEC defines to ease merging CEC support in the next
merge window.
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Pull dmaengine updates from Vinod Koul:
"This is bit large pile of code which bring in some nice additions:
- Error reporting: we have added a new mechanism for users of
dmaenegine to register a callback_result which tells them the
result of the dma transaction. Right now only one user (ntb) is
using it.
- As we discussed on KS mailing list and pointed out NO_IRQ has no
place in kernel, this also remove NO_IRQ from dmaengine subsystem
(both arm and ppc users)
- Support for IOMMU slave transfers and its implementation for arm.
- To get better build coverage, enable COMPILE_TEST for bunch of
driver, and fix the warning and sparse complaints on these.
- Apart from above, usual updates spread across drivers"
* tag 'dmaengine-4.9-rc1' of git://git.infradead.org/users/vkoul/slave-dma: (169 commits)
async_pq_val: fix DMA memory leak
dmaengine: virt-dma: move function declarations
dmaengine: omap-dma: Enable burst and data pack for SG
DT: dmaengine: rcar-dmac: document R8A7743/5 support
dmaengine: fsldma: Unmap region obtained by of_iomap
dmaengine: jz4780: fix resource leaks on error exit return
dma-debug: fix ia64 build, use PHYS_PFN
dmaengine: coh901318: fix integer overflow when shifting more than 32 places
dmaengine: edma: avoid uninitialized variable use
dma-mapping: fix m32r build warning
dma-mapping: fix ia64 build, use PHYS_PFN
dmaengine: ti-dma-crossbar: enable COMPILE_TEST
dmaengine: omap-dma: enable COMPILE_TEST
dmaengine: edma: enable COMPILE_TEST
dmaengine: ti-dma-crossbar: Fix of_device_id data parameter usage
dmaengine: ti-dma-crossbar: Correct type for of_find_property() third parameter
dmaengine/ARM: omap-dma: Fix the DMAengine compile test on non OMAP configs
dmaengine: edma: Rename set_bits and remove unused clear_bits helper
dmaengine: edma: Use correct type for of_find_property() third parameter
dmaengine: edma: Fix of_device_id data parameter usage (legacy vs TPCC)
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Add methods to map/unmap device resources addresses for dma_map_ops that
are IOMMU aware. This is needed to map a device MMIO register from a
physical address.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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This patch updates the s3c24xx dma driver to be able to pass a
dma_slave_map array via the platform data. This is needed to
be able to use the new, simpler dmaengine API [1].
I used the virtual DMA channels as a parameter for the dma_filter
function. By doing that, I could reuse the existing filter function in
drivers/dma/s3c24xx-dma.c.
I have tested this on my mini2440 board with the audio driver.
According to my observations, dma_request_slave_channel in the
function dmaengine_pcm_new in the file
sound/soc/soc-generic-dmaengine-pcm.c now returns a valid DMA channel
whereas before no DMA channel was returned at that point.
Entries for DMACH_XD0, DMACH_XD1 and DMACH_TIMER are missing because I
don't realy know which driver to use for these.
[1]
http://lists.infradead.org/pipermail/linux-arm-kernel/2015-December/393635.html
Signed-off-by: Sam Van Den Berge <sam.van.den.berge@telenet.be>
Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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Pull KVM updates from Radim Krčmář:
"All architectures:
- move `make kvmconfig` stubs from x86
- use 64 bits for debugfs stats
ARM:
- Important fixes for not using an in-kernel irqchip
- handle SError exceptions and present them to guests if appropriate
- proxying of GICV access at EL2 if guest mappings are unsafe
- GICv3 on AArch32 on ARMv8
- preparations for GICv3 save/restore, including ABI docs
- cleanups and a bit of optimizations
MIPS:
- A couple of fixes in preparation for supporting MIPS EVA host
kernels
- MIPS SMP host & TLB invalidation fixes
PPC:
- Fix the bug which caused guests to falsely report lockups
- other minor fixes
- a small optimization
s390:
- Lazy enablement of runtime instrumentation
- up to 255 CPUs for nested guests
- rework of machine check deliver
- cleanups and fixes
x86:
- IOMMU part of AMD's AVIC for vmexit-less interrupt delivery
- Hyper-V TSC page
- per-vcpu tsc_offset in debugfs
- accelerated INS/OUTS in nVMX
- cleanups and fixes"
* tag 'kvm-4.9-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (140 commits)
KVM: MIPS: Drop dubious EntryHi optimisation
KVM: MIPS: Invalidate TLB by regenerating ASIDs
KVM: MIPS: Split kernel/user ASID regeneration
KVM: MIPS: Drop other CPU ASIDs on guest MMU changes
KVM: arm/arm64: vgic: Don't flush/sync without a working vgic
KVM: arm64: Require in-kernel irqchip for PMU support
KVM: PPC: Book3s PR: Allow access to unprivileged MMCR2 register
KVM: PPC: Book3S PR: Support 64kB page size on POWER8E and POWER8NVL
KVM: PPC: Book3S: Remove duplicate setting of the B field in tlbie
KVM: PPC: BookE: Fix a sanity check
KVM: PPC: Book3S HV: Take out virtual core piggybacking code
KVM: PPC: Book3S: Treat VTB as a per-subcore register, not per-thread
ARM: gic-v3: Work around definition of gic_write_bpr1
KVM: nVMX: Fix the NMI IDT-vectoring handling
KVM: VMX: Enable MSR-BASED TPR shadow even if APICv is inactive
KVM: nVMX: Fix reload apic access page warning
kvmconfig: add virtio-gpu to config fragment
config: move x86 kvm_guest.config to a common location
arm64: KVM: Remove duplicating init code for setting VMID
ARM: KVM: Support vgic-v3
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git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into next
KVM/ARM Changes for v4.9
- Various cleanups and removal of redundant code
- Two important fixes for not using an in-kernel irqchip
- A bit of optimizations
- Handle SError exceptions and present them to guests if appropriate
- Proxying of GICV access at EL2 if guest mappings are unsafe
- GICv3 on AArch32 on ARMv8
- Preparations for GICv3 save/restore, including ABI docs
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A new accessor for gic_write_bpr1 is added to arch_gicv3.h in 4.9,
whilst the CP15 accessors are redifined in a separate branch.
This leads to a horrible clash, where the new accessor ends up with
a crap "asm volatile" definition.
Work around this by carrying our own definition of gic_write_bpr1,
creating a small conflict which will be obvious to resolve.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
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By now both VHE and non-VHE initialisation sequences query supported
VMID size. Lets keep only single instance of this code under
init_common_resources().
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
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This patch allows to build and use vgic-v3 in 32-bit mode.
Unfortunately, it can not be split in several steps without extra
stubs to keep patches independent and bisectable. For instance,
virt/kvm/arm/vgic/vgic-v3.c uses function from vgic-v3-sr.c, handling
access to GICv3 cpu interface from the guest requires vgic_v3.vgic_sre
to be already defined.
It is how support has been done:
* handle SGI requests from the guest
* report configured SRE on access to GICv3 cpu interface from the guest
* required vgic-v3 macros are provided via uapi.h
* static keys are used to select GIC backend
* to make vgic-v3 build KVM_ARM_VGIC_V3 guard is removed along with
the static inlines
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
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vgic-v3 save/restore routines are written in such way that they map
arm64 system register naming nicely, but it does not fit to arm
world. To keep virt/kvm/arm/hyp/vgic-v3-sr.c untouched we create a
mapping with a function for each register mapping the 32-bit to the
64-bit accessors.
Please, note that 64-bit wide ICH_LR is split in two 32-bit halves
(ICH_LR and ICH_LRC) accessed independently.
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
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Headers linux/irqchip/arm-gic.v3.h and arch/arm/include/asm/kvm_hyp.h
are included in virt/kvm/arm/hyp/vgic-v3-sr.c and both define macros
called __ACCESS_CP15 and __ACCESS_CP15_64 which obviously creates a
conflict. These macros were introduced independently for GIC and KVM
and, in fact, do the same thing.
As an option we could add prefixes to KVM and GIC version of macros so
they won't clash, but it'd introduce code duplication. Alternatively,
we could keep macro in, say, GIC header and include it in KVM one (or
vice versa), but such dependency would not look nicer.
So we follow arm64 way (it handles this via sysreg.h) and move only
single set of macros to asm/cp15.h
Cc: Russell King <rmk+kernel@armlinux.org.uk>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
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vgic-v3 driver uses architecture specific MPIDR_LEVEL_SHIFT macro to
encode the affinity in a form compatible with ICC_SGI* registers.
Unfortunately, that macro is missing on ARM, so let's add it.
Cc: Russell King <rmk+kernel@armlinux.org.uk>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
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As we know handle external aborts pretty early, we can get rid of
its handling in the MMIO code (which was a bit odd to begin with...).
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
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If we spot a data abort bearing the ESR_EL2.EA bit set, we know that
this is an external abort, and that should be punished by the injection
of an abort.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
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Both data and prefetch aborts occuring in HYP lead to a well
deserved panic. Let's get rid of these silly handlers.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
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If we have caught an Abort whilst exiting, we've tagged the
exit code with the pending information. In that case, let's
re-inject the error into the guest, after having adjusted
the PC if required.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
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Just like for arm64, we can handle asynchronous aborts being
delivered at HYP while being caused by the guest. We use
the exact same method to catch such an abort, and soldier on.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
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An asynchronous abort can also be triggered whilst running at EL2.
But instead of making that a new error code, we need to communicate
it to the rest of KVM together with the exit reason.
So let's hijack a single bit that allows the exception code to be
tagged with a "pending Abort" information.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
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If we've exited the guest because it has triggered an asynchronous
abort, a possible course of action is to let it know it screwed up
by giving it a Virtual Abort to chew on.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
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