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Probably we should have not upstreamed this in the first place
Signed-off-by: Emil Medve <Emilian.Medve@Freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
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Fix this:
CC arch/powerpc/sysdev/fsl_pci.o
arch/powerpc/sysdev/fsl_pci.c: In function 'fsl_pcie_check_link':
arch/powerpc/sysdev/fsl_pci.c:91:1: error: the frame size of 1360 bytes is larger than 1024 bytes [-Werror=frame-larger-than=]
when configuring FRAME_WARN, by refactoring indirect_read_config()
to take hose and bus number instead of the 1344-byte struct pci_bus.
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
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The following patch adds coupled cpuidle support for Exynos4210 to
an existing cpuidle-exynos driver. As a result it enables AFTR mode
to be used by default on Exynos4210 without the need to hot unplug
CPU1 first.
The patch is heavily based on earlier cpuidle-exynos4210 driver from
Daniel Lezcano:
http://www.spinics.net/lists/linux-samsung-soc/msg28134.html
Changes from Daniel's code include:
- porting code to current kernels
- fixing it to work on my setup (by using S5P_INFORM register
instead of S5P_VA_SYSRAM one on Revison 1.1 and retrying poking
CPU1 out of the BOOT ROM if necessary)
- fixing rare lockup caused by waiting for CPU1 to get stuck in
the BOOT ROM (CPU hotplug code in arch/arm/mach-exynos/platsmp.c
doesn't require this and works fine)
- moving Exynos specific code to arch/arm/mach-exynos/pm.c
- using cpu_boot_reg_base() helper instead of BOOT_VECTOR macro
- using exynos_cpu_*() helpers instead of accessing registers
directly
- using arch_send_wakeup_ipi_mask() instead of dsb_sev()
(this matches CPU hotplug code in arch/arm/mach-exynos/platsmp.c)
- integrating separate exynos4210-cpuidle driver into existing
exynos-cpuidle one
Cc: Colin Cross <ccross@google.com>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Cc: Tomasz Figa <tomasz.figa@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
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Commit c2dd114d2486 ("ARM: EXYNOS: fix register setup for AFTR mode
code") added S5P_CENTRAL_SEQ_OPTION register setup fix for all
Exynos SoCs to AFTR mode code-path. It turned out that for coupled
cpuidle AFTR mode on Exynos4210 (added by the next patch) applying
this fix causes lockup so enable it in the AFTR mode code-path only
on SoCs that require it (in the suspend code-path it can be always
applied like it was before commit c2dd114d2486 ("ARM: EXYNOS: fix
register setup for AFTR mode code")
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Colin Cross <ccross@google.com>
Cc: Tomasz Figa <tomasz.figa@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
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Currently the hdmi driver is using one of the soc i2c busses for ddc probing
and while documentation always specifies i2c5 as hdmi-i2c it could very well
be any other bus as well.
Therefore this is a property of the board and should be specified there.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
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This enables the recently added display nodes on the firefly and evb,
letting the boards output graphic data over the hdmi port.
This includes enabling of i2c5 on the evb that is used for ddc probing and
setting the lcd-regulators to always on until the hdmi driver learns
about using them.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
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As printk() invocation can cause e.g. a TLB miss, printk() cannot be
called before the exception handlers have been properly initialized.
This can happen e.g. when netconsole has been loaded as a kernel module
and the TLB table has been cleared when a CPU was offline.
Call cpu_report() in start_secondary() only after the exception handlers
have been initialized to fix this.
Without the patch the kernel will randomly either lockup or crash
after a CPU is onlined and the console driver is a module.
Signed-off-by: Hemmo Nieminen <hemmo.nieminen@iki.fi>
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: stable@vger.kernel.org
Cc: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/8953/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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octeon_cpu_disable() will unconditionally enable interrupts when called.
We can assume that the routine is always called with interrupts disabled,
so just delete the incorrect local_irq_disable/enable().
The patch fixes the following crash when offlining a CPU:
[ 93.818785] ------------[ cut here ]------------
[ 93.823421] WARNING: CPU: 1 PID: 10 at kernel/smp.c:231 flush_smp_call_function_queue+0x1c4/0x1d0()
[ 93.836215] Modules linked in:
[ 93.839287] CPU: 1 PID: 10 Comm: migration/1 Not tainted 3.19.0-rc4-octeon-los_b5f0 #1
[ 93.847212] Stack : 0000000000000001 ffffffff81b2cf90 0000000000000004 ffffffff81630000
0000000000000000 0000000000000000 0000000000000000 000000000000004a
0000000000000006 ffffffff8117e550 0000000000000000 0000000000000000
ffffffff81b30000 ffffffff81b26808 8000000032c77748 ffffffff81627e07
ffffffff81595ec8 ffffffff81b26808 000000000000000a 0000000000000001
0000000000000001 0000000000000003 0000000010008ce1 ffffffff815030c8
8000000032cbbb38 ffffffff8113d42c 0000000010008ce1 ffffffff8117f36c
8000000032c77300 8000000032cbba50 0000000000000001 ffffffff81503984
0000000000000000 0000000000000000 0000000000000000 0000000000000000
0000000000000000 ffffffff81121668 0000000000000000 0000000000000000
...
[ 93.912819] Call Trace:
[ 93.915273] [<ffffffff81121668>] show_stack+0x68/0x80
[ 93.920335] [<ffffffff81503984>] dump_stack+0x6c/0x90
[ 93.925395] [<ffffffff8113d58c>] warn_slowpath_common+0x94/0xd8
[ 93.931324] [<ffffffff811a402c>] flush_smp_call_function_queue+0x1c4/0x1d0
[ 93.938208] [<ffffffff811a4128>] hotplug_cfd+0xf0/0x108
[ 93.943444] [<ffffffff8115bacc>] notifier_call_chain+0x5c/0xb8
[ 93.949286] [<ffffffff8113d704>] cpu_notify+0x24/0x60
[ 93.954348] [<ffffffff81501738>] take_cpu_down+0x38/0x58
[ 93.959670] [<ffffffff811b343c>] multi_cpu_stop+0x154/0x180
[ 93.965250] [<ffffffff811b3768>] cpu_stopper_thread+0xd8/0x160
[ 93.971093] [<ffffffff8115ea4c>] smpboot_thread_fn+0x1ec/0x1f8
[ 93.976936] [<ffffffff8115ab04>] kthread+0xd4/0xf0
[ 93.981735] [<ffffffff8111c4f0>] ret_from_kernel_thread+0x14/0x1c
[ 93.987835]
[ 93.989326] ---[ end trace c9e3815ee655bda9 ]---
[ 93.993951] Kernel bug detected[#1]:
[ 93.997533] CPU: 1 PID: 10 Comm: migration/1 Tainted: G W 3.19.0-rc4-octeon-los_b5f0 #1
[ 94.006591] task: 8000000032c77300 ti: 8000000032cb8000 task.ti: 8000000032cb8000
[ 94.014081] $ 0 : 0000000000000000 0000000010000ce1 0000000000000001 ffffffff81620000
[ 94.022146] $ 4 : 8000000002c72ac0 0000000000000000 00000000000001a7 ffffffff813b06f0
[ 94.030210] $ 8 : ffffffff813b20d8 0000000000000000 0000000000000000 ffffffff81630000
[ 94.038275] $12 : 0000000000000087 0000000000000000 0000000000000086 0000000000000000
[ 94.046339] $16 : ffffffff81623168 0000000000000001 0000000000000000 0000000000000008
[ 94.054405] $20 : 0000000000000001 0000000000000001 0000000000000001 0000000000000003
[ 94.062470] $24 : 0000000000000038 ffffffff813b7f10
[ 94.070536] $28 : 8000000032cb8000 8000000032cbbc20 0000000010008ce1 ffffffff811bcaf4
[ 94.078601] Hi : 0000000000f188e8
[ 94.082179] Lo : d4fdf3b646c09d55
[ 94.085760] epc : ffffffff811bc9d0 irq_work_run_list+0x8/0xf8
[ 94.091686] Tainted: G W
[ 94.095613] ra : ffffffff811bcaf4 irq_work_run+0x34/0x60
[ 94.101192] Status: 10000ce3 KX SX UX KERNEL EXL IE
[ 94.106235] Cause : 40808034
[ 94.109119] PrId : 000d9301 (Cavium Octeon II)
[ 94.113653] Modules linked in:
[ 94.116721] Process migration/1 (pid: 10, threadinfo=8000000032cb8000, task=8000000032c77300, tls=0000000000000000)
[ 94.127168] Stack : 8000000002c74c80 ffffffff811a4128 0000000000000001 ffffffff81635720
fffffffffffffff2 ffffffff8115bacc 80000000320fbce0 80000000320fbca4
80000000320fbc80 0000000000000002 0000000000000004 ffffffff8113d704
80000000320fbce0 ffffffff81501738 0000000000000003 ffffffff811b343c
8000000002c72aa0 8000000002c72aa8 ffffffff8159cae8 ffffffff8159caa0
ffffffff81650000 80000000320fbbf0 80000000320fbc80 ffffffff811b32e8
0000000000000000 ffffffff811b3768 ffffffff81622b80 ffffffff815148a8
8000000032c77300 8000000002c73e80 ffffffff815148a8 8000000032c77300
ffffffff81622b80 ffffffff815148a8 8000000032c77300 ffffffff81503f48
ffffffff8115ea0c ffffffff81620000 0000000000000000 ffffffff81174d64
...
[ 94.192771] Call Trace:
[ 94.195222] [<ffffffff811bc9d0>] irq_work_run_list+0x8/0xf8
[ 94.200802] [<ffffffff811bcaf4>] irq_work_run+0x34/0x60
[ 94.206036] [<ffffffff811a4128>] hotplug_cfd+0xf0/0x108
[ 94.211269] [<ffffffff8115bacc>] notifier_call_chain+0x5c/0xb8
[ 94.217111] [<ffffffff8113d704>] cpu_notify+0x24/0x60
[ 94.222171] [<ffffffff81501738>] take_cpu_down+0x38/0x58
[ 94.227491] [<ffffffff811b343c>] multi_cpu_stop+0x154/0x180
[ 94.233072] [<ffffffff811b3768>] cpu_stopper_thread+0xd8/0x160
[ 94.238914] [<ffffffff8115ea4c>] smpboot_thread_fn+0x1ec/0x1f8
[ 94.244757] [<ffffffff8115ab04>] kthread+0xd4/0xf0
[ 94.249555] [<ffffffff8111c4f0>] ret_from_kernel_thread+0x14/0x1c
[ 94.255654]
[ 94.257146]
Code: a2423c40 40026000 30420001 <00020336> dc820000 10400037 00000000 0000010f 0000010f
[ 94.267183] ---[ end trace c9e3815ee655bdaa ]---
[ 94.271804] Fatal exception: panic in 5 seconds
Reported-by: Hemmo Nieminen <hemmo.nieminen@iki.fi>
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Acked-by: David Daney <david.daney@cavium.com>
Cc: stable@vger.kernel.org # v3.18+
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/8952/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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When handling a fault in stage-2, we need to resync I$ and D$, just
to be sure we don't leave any old cache line behind.
That's very good, except that we do so using the *user* address.
Under heavy load (swapping like crazy), we may end up in a situation
where the page gets mapped in stage-2 while being unmapped from
userspace by another CPU.
At that point, the DC/IC instructions can generate a fault, which
we handle with kvm->mmu_lock held. The box quickly deadlocks, user
is unhappy.
Instead, perform this invalidation through the kernel mapping,
which is guaranteed to be present. The box is much happier, and so
am I.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
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Let's assume a guest has created an uncached mapping, and written
to that page. Let's also assume that the host uses a cache-coherent
IO subsystem. Let's finally assume that the host is under memory
pressure and starts to swap things out.
Before this "uncached" page is evicted, we need to make sure
we invalidate potential speculated, clean cache lines that are
sitting there, or the IO subsystem is going to swap out the
cached view, loosing the data that has been written directly
into memory.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
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Trying to emulate the behaviour of set/way cache ops is fairly
pointless, as there are too many ways we can end-up missing stuff.
Also, there is some system caches out there that simply ignore
set/way operations.
So instead of trying to implement them, let's convert it to VA ops,
and use them as a way to re-enable the trapping of VM ops. That way,
we can detect the point when the MMU/caches are turned off, and do
a full VM flush (which is what the guest was trying to do anyway).
This allows a 32bit zImage to boot on the APM thingy, and will
probably help bootloaders in general.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
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Use the same transfer speed on both the rk808 and act8846 variants and
remove the status=okay from the rk808 one which is already set in the
shared rk3288-evb.dtsi .
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
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The evaluation board using the act8846 as main pmic uses two additional
regulators to provide the cpu and gpu voltage. Add these and also add
the link to cpu supply from vdd_cpu.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Daniel Lezcano <daniel.lezcano@linaro.org>
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next/soc
Merge "Zynq SoC changes for 3.20" from Michal Simek:
arm: Xilinx Zynq SoC patches for v3.20
- Enable pincontrol
- Simplified SLCR initialization
- Setup default ARCH_NR_GPIO
* tag 'zynq-soc-for-3.20' of https://github.com/Xilinx/linux-xlnx:
ARM: zynq: Simplify SLCR initialization
ARM: zynq: PM: Fixed simple typo.
ARM: zynq: Setup default gpio number for Xilinx Zynq
ARM: zynq: Enable pinctrl
Signed-off-by: Olof Johansson <olof@lixom.net>
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next/dt
Merge "Zync DT for v3.20" from Michal Simek:
arm: Xilinx Zynq dt patches for v3.20
- Add USB chipidea driver to DT
- Add pincontrol
- Add aliases node
- Fix WDT node
* tag 'zynq-dt-for-3.20' of https://github.com/Xilinx/linux-xlnx:
ARM: zynq: DT: Add aliases node
ARM: zynq: DT: Fix binding for cadence WDT
ARM: zynq: DT: Add pinctrl information to USB nodes
ARM: zynq: DT: Remove bogus value from 'bias-disable' property
ARM: zynq: DT: Add pinctrl information
ARM: zynq: DT: Add USB to device tree
Signed-off-by: Olof Johansson <olof@lixom.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/defconfig
Merge "Renesas ARM Based SoC Defconfig Fixes for v3.20" from Simon Horman:
* Select CONFIG_REGULATOR in mach_shmobile defconfig once again
* tag 'renesas-defconfig-fixes-for-v3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
ARM: shmobile: Select CONFIG_REGULATOR in defconfig once again
Signed-off-by: Olof Johansson <olof@lixom.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/dt
Merge "Samsung 3rd DT updates for v3.20" from Kukjin Kim:
- add DISP1 power domain for support HDMI support on exynos5420/5422/5800
and the power domain node including FIMD1, MIXER and HDMI modules
(tested on exynos5420 Peach Pit and exynos5800 Peach Pi Chromebooks
and exynos5422 Odroid XU3 by Javier Martinez Canillas)
Note this is including a patch for adding clock IDs for the DISP1 power
domain with Mike and Sylwester's acks so that could be handled together
to avoid non-working.
* tag 'samsung-dt-3' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
ARM: dts: Add DISP1 power domain for exynos5420
clk: exynos5420: Add IDs for clocks used in DISP1 power domain
Signed-off-by: Olof Johansson <olof@lixom.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/dt
Merge "Samsung 2nd DT updates for v3.20" from Kukjin Kim:
- for all of Samsung SoCs
: use generic power domain bindings
: add 'dr_mode' property for hsotg/dwc2 devices
- exynos3250-rinato and exynos3250-monk
: add regulator-haptic
- exynos5422-odroidxu3
: reduce total RAM by 22 MiB because last 22 MiB
for secure monitor cannot be accessed by kernel
: add on-board INA231 sensors and LDO26 of PMIC
for the sensors
* tag 'samsung-dt-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
ARM: dts: reduce total RAM by 22 MiB for exynos5422-odroidxu3
ARM: dts: add on-board INA231 sensors for exynos5422-odroidxu3
ARM: dts: Add regulator-haptic node for exynos3250-monk
ARM: dts: Add regulator-haptic node for exynos3250-rinato
ARM: dts: add 'dr_mode' property to hsotg devices for exynos boards
ARM: dts: convert to generic power domain bindings for exynos DT
Signed-off-by: Olof Johansson <olof@lixom.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/soc
Merge "Samsung mach updates for v3.20" from Kukjin Kim:
- add exynos3250 Supsend to RAM support
- recognize MFC v8 devices for exynos5422/5800
- print CPU id/rev during kernel boot
* tag 'samsung-update' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
ARM: EXYNOS: Add exynos3250 suspend-to-ram support
ARM: EXYNOS: Recognize Samsung MFC v8 devices
ARM: SAMSUNG: print CPU id on probe
Signed-off-by: Olof Johansson <olof@lixom.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/cleanup
Merge "Samsung cleanup for v3.20" from Kukjin Kim:
- remove i2c sys configuration from mach-exynos/
: all related codes moved into i2c driver
- remove Samsung specific DMA
: every Samsung stuff uses dmaengine APIs
* tag 'samsung-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
ARM: SAMSUNG: remove unused DMA infrastructure
ARM: EXYNOS: Remove i2c sys configuration related code
Signed-off-by: Olof Johansson <olof@lixom.net>
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The digicolor interrupt controller driver now needs syscon.
Also, as per clocksource maintainer request, we now have a separate config
symbol, CONFIG_DIGICOLOR_TIMER, for the digicolor timer.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Olof Johansson <olof@lixom.net>
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cx92755.dtsi describes CX92755 on chip peripherals. cx92755_equinox.dts
describes the Equinox evaluation board for the CX92755 SoC.
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Olof Johansson <olof@lixom.net>
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Paul Bolle pointed out that commit
d035fdfa27ac124bc8f94c3d7dc82ad069802170 ("arm64: Add Tegra132
support") included two Kconfig symbols that are now no-ops:
USB_ARCH_HAS_EHCI and HAVE_SMP. So, drop the two symbols.
This second version corrects a thinko in Paul Bolle's E-mail address.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Paul Walmsley <pwalmsley@nvidia.com>
Cc: Allen Martin <amartin@nvidia.com>
Cc: Thierry Reding <treding@nvidia.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Olof Johansson <olof@lixom.net>
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Commit 4bb25789ed28228a ("arm: dma-mapping: plumb our iommu mapping ops
into arch_setup_dma_ops") moved the setting of the DMA operations from
arm_iommu_attach_device() to arch_setup_dma_ops() where the DMA
operations to be used are selected based on whether the device is
connected to an IOMMU. However, the IOMMU detection scheme requires the
IOMMU driver to be ported to the new IOMMU of_xlate API. As no driver
has been ported yet, this effectively breaks all IOMMU ARM users that
depend on the IOMMU being handled transparently by the DMA mapping API.
Fix this by restoring the setting of DMA IOMMU ops in
arm_iommu_attach_device() and splitting the rest of the function into a
new internal __arm_iommu_attach_device() function, called by
arch_setup_dma_ops().
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Olof Johansson <olof@lixom.net>
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The core VM already knows about VM_FAULT_SIGBUS, but cannot return a
"you should SIGSEGV" error, because the SIGSEGV case was generally
handled by the caller - usually the architecture fault handler.
That results in lots of duplication - all the architecture fault
handlers end up doing very similar "look up vma, check permissions, do
retries etc" - but it generally works. However, there are cases where
the VM actually wants to SIGSEGV, and applications _expect_ SIGSEGV.
In particular, when accessing the stack guard page, libsigsegv expects a
SIGSEGV. And it usually got one, because the stack growth is handled by
that duplicated architecture fault handler.
However, when the generic VM layer started propagating the error return
from the stack expansion in commit fee7e49d4514 ("mm: propagate error
from stack expansion even for guard page"), that now exposed the
existing VM_FAULT_SIGBUS result to user space. And user space really
expected SIGSEGV, not SIGBUS.
To fix that case, we need to add a VM_FAULT_SIGSEGV, and teach all those
duplicate architecture fault handlers about it. They all already have
the code to handle SIGSEGV, so it's about just tying that new return
value to the existing code, but it's all a bit annoying.
This is the mindless minimal patch to do this. A more extensive patch
would be to try to gather up the mostly shared fault handling logic into
one generic helper routine, and long-term we really should do that
cleanup.
Just from this patch, you can generally see that most architectures just
copied (directly or indirectly) the old x86 way of doing things, but in
the meantime that original x86 model has been improved to hold the VM
semaphore for shorter times etc and to handle VM_FAULT_RETRY and other
"newer" things, so it would be a good idea to bring all those
improvements to the generic case and teach other architectures about
them too.
Reported-and-tested-by: Takashi Iwai <tiwai@suse.de>
Tested-by: Jan Engelhardt <jengelh@inai.de>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com> # "s390 still compiles and boots"
Cc: linux-arch@vger.kernel.org
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/mfleming/efi into x86/efi
Pull EFI updates from Matt Fleming:
" - Move efivarfs from the misc filesystem section to pseudo filesystem,
since that's a more logical and accurate place - Leif Lindholm
- Update efibootmgr URL in Kconfig help - Peter Jones
- Improve accuracy of EFI guid function names - Borislav Petkov
- Expose firmware platform size in sysfs for the benefit of EFI boot
loader installers and other utilities - Steve McIntyre
- Cleanup __init annotations for arm64/efi code - Ard Biesheuvel
- Mark the UIE as unsupported for rtc-efi - Ard Biesheuvel
- Fix memory leak in error code path of runtime map code - Dan Carpenter
- Improve robustness of get_memory_map() by removing assumptions on the
size of efi_memory_desc_t (which could change in future spec
versions) and querying the firmware instead of guessing about the
memmap size - Ard Biesheuvel
- Remove superfluous guid unparse calls - Ivan Khoronzhuk
- Delete unnecessary chosen@0 DT node FDT code since was duplicated
from code in drivers/of and is entirely unnecessary - Leif Lindholm
There's nothing super scary, mainly cleanups, and a merge from Ricardo who
kindly picked up some patches from the linux-efi mailing list while I
was out on annual leave in December.
Perhaps the biggest risk is the get_memory_map() change from Ard, which
changes the way that both the arm64 and x86 EFI boot stub build the
early memory map. It would be good to have it bake in linux-next for a
while.
"
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Commit 523d6e9fae93 (arm64:mm: free the useless initial page table)
introduced a BUG_ON checking for the allocation type but it was
referring the early_alloc() function in the __init section. This patch
changes the check to slab_is_available() and also relaxes the BUG to a
WARN_ON_ONCE.
Reported-by: Will Deacon <will.deacon@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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Alternate macro mode is not a property of a macro definition, but a
gas runtime state that alters the way macros are expanded for ever
after (until .noaltmacro is seen).
This means that subsequent assembly code that calls other macros can
break if fpsimdmacros.h is included.
Since these instruction sequences are simple (if dull -- but in a
good way), this patch solves the problem by simply expanding the
.irp loops. The pre-existing fpsimd_{save,restore} macros weren't
rolled with .irp anyway and the sequences affected are short, so
this change restores consistency at little cost.
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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When using network driver on keystone and nfs rootfs is used following
error displayed and device halts.
Missing devtmpfs, which is required for udev to run
Halting...
Add the DEVTMPFS option by default to fix this
Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: Santosh Shilimkar <ssantosh@kernel.org>
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Use a brcl 0,2 instruction for jump label nops during compile time,
so we don't mix up the different nops during mcount/hotpatch call
site detection.
The initial jump label code instruction replacement will exchange
these instructions with either a branch or a brcl 0,0 instruction.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Add sanity checks to verify that only expected code will be replaced.
If the code patterns do not match print the code patterns and panic,
since something went terribly wrong.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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StrongARM core uses RCSR SMR bit to tell to bootloader that it was reset
by entering the sleep mode. After we have resumed, there is little point
in having that bit enabled. Moreover, if this bit is set before reboot,
the bootloader can become confused. Thus clear the SMR bit on resume
just before clearing the scratchpad (resume address) register.
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Let kernel drivers to control wakeup sources instead of hardcoding them
in the collie.c board file.
Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Use handle_domain_irq instead of handle_IRQ to automatically map
hardware irq number to virq.
Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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As a part of driver consolidation, move GPIO-related IRQ code to
drivers/gpio/gpio-sa1100.c. The code does not use GPIOLIB_IRQCHIP (yet),
because sa1100 does not have a device for gpios, which is a requirement
for GPIOLIB_IRQCHIP. This will be the next step.
Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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As now both SC and GPIO irq domains start from 0 hwirq and do not
contain holes, switch to using irq_domain_add_simple() instead of
irq_domain_add_legacy().
Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Now there is no difference between low and high GPIO irqdomains. Merge
them into single irqdomain handling all GPIOs.
Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Low GPIO pins use an interrupt in SC interrupts space. However it's
possible to handle them as if all the GPIO interrupts are instead tied
to single GPIO handler, which later decodes GEDR register and
chain-calls next IRQ handler. So split first 11 interrupts into system
part (IRQ_GPIO0_SC - IRQ_GPIO10_SC) which work exactly like the rest of
system controller interrupts and real GPIO interrupts
(IRQ_GPIO0..IRQ_GPIO10). A single handler sa1100_gpio_handler then
decodes and calls next handler.
Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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The recently added ARM_KERNMEM_PERMS feature works by manipulating
the kernel page tables, which obviously requires an MMU. Trying
to enable this feature when the MMU is disabled results in a lot
of compile errors in mm/init.c, so let's add a Kconfig dependency
to avoid that case.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Minimal builds for v7M are broken when printk is disabled. The caller is
assembly so add the necessary ifdef around the call.
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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There is currently a hardcoded limit of 64KB for the DTB to live in and
be extended with ATAG info. Some DTBs have outgrown that limit:
$ du -b arch/arm/boot/dts/omap3-n900.dtb
70212 arch/arm/boot/dts/omap3-n900.dtb
Furthermore, the actual size passed to atags_to_fdt() included the stack
size which is obviously wrong.
The initial DTB size is known, so use it to size the allocated workspace
with a 50% growth assumption and relocate the temporary stack above that.
This is also clamped to 32KB min / 1MB max for robustness against bad
DTB data.
Reported-by: Pali Rohár <pali.rohar@gmail.com>
Tested-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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When tearing down the DMA ops for a device via of_dma_deconfigure, we
unconditionally detach the device from its IOMMU domain. For devices
that aren't actually behind an IOMMU, this produces a "Not attached"
warning message on the console.
This patch changes the teardown code so that we don't detach from the
IOMMU domain when there isn't an IOMMU dma mapping to start with.
Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Based on
"mfd: syscon: Decouple syscon interface from platform devices"
(sha1: bdb0066df96e74a4002125467ebe459feff1ebef)
SLCR driver can use syscon/regmap drivers directly.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
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Signed-off-by: Moritz Fischer <moritz.fischer@ettus.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
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Signed-off-by: Michal Simek <michal.simek@xilinx.com>
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Convert the integrator PCI driver to use the generic config access
functions.
This changes accesses from __raw_readX/__raw_writeX to readX/writeX
variants. The spinlock is removed because it is unnecessary. The config
read and write functions are already protected with a spinlock and no
access can occur during the .pre_init function.
[arnd: remove unused "flags"]
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
CC: Russell King <linux@arm.linux.org.uk>
CC: linux-arm-kernel@lists.infradead.org
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Add the PCI controller node for the Versatile/PB board.
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
CC: Russell King <linux@arm.linux.org.uk>
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This patch adds new kvm_x86_ops dirty logging hooks to enable/disable dirty
logging for particular memory slot, and to flush potentially logged dirty GPAs
before reporting slot->dirty_bitmap to userspace.
kvm x86 common code calls these hooks when they are available so PML logic can
be hidden to VMX specific. SVM won't be impacted as these hooks remain NULL
there.
Signed-off-by: Kai Huang <kai.huang@linux.intel.com>
Reviewed-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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This patch changes the second parameter of kvm_mmu_slot_remove_write_access from
'slot id' to 'struct kvm_memory_slot *' to align with kvm_x86_ops dirty logging
hooks, which will be introduced in further patch.
Better way is to change second parameter of kvm_arch_commit_memory_region from
'struct kvm_userspace_memory_region *' to 'struct kvm_memory_slot * new', but it
requires changes on other non-x86 ARCH too, so avoid it now.
Signed-off-by: Kai Huang <kai.huang@linux.intel.com>
Reviewed-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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