Pull ARM fixes from Russell King:
"A small number of ARM fixes
- Fix function tracer and unwinder dependencies so that we don't end
up building kernels that will crash
- Fix ARMv7M nommu initialisation (missing register initialisation)
- Fix EFI decompressor entry (ensuring barrier instructions are
enabled prior to use)"
* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: 8857/1: efi: enable CP15 DMB instructions before cleaning the cache
ARM: 8856/1: NOMMU: Fix CCR register faulty initialization when MPU is disabled
ARM: fix function graph tracer and unwinder dependencies
Pull syscall numbering updates from Arnd Bergmann: "arch: add pidfd and io_uring syscalls everywhere This comes a bit late, but should be in 5.1 anyway: we want the newly added system calls to be synchronized across all architectures in the release. I hope that in the future, any newly added system calls can be added to all architectures at the same time, and tested there while they are in linux-next, avoiding dependencies between the architecture maintainer trees and the tree that contains the new system call" * tag 'syscalls-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: arch: add pidfd and io_uring syscalls everywhere
The EFI stub is entered with the caches and MMU enabled by the firmware, and once the stub is ready to hand over to the decompressor, we clean and disable the caches. The cache clean routines use CP15 barrier instructions, which can be disabled via SCTLR. Normally, when using the provided cache handling routines to enable the caches and MMU, this bit is enabled as well. However, but since we entered the stub with the caches already enabled, this routine is not executed before we call the cache clean routines, resulting in undefined instruction exceptions if the firmware never enabled this bit. So set the bit explicitly in the EFI entry code, but do so in a way that guarantees that the resulting code can still run on v6 cores as well (which are guaranteed to have CP15 barriers enabled) Cc: <stable@vger.kernel.org> # v4.9+ Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
When CONFIG_ARM_MPU is not defined, the base address of v7M SCB register
is not initialized with correct value. This prevents enabling I/D caches
when the L1 cache poilcy is applied in kernel.
Fixes: 3c24121039c9da14692eb48f6e39565b28c0f3cf ("ARM: 8756/1: NOMMU: Postpone MPU activation till __after_proc_init")
Signed-off-by: Tigran Tadevosyan <tigran.tadevosyan@arm.com>
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Naresh Kamboju recently reported that the function-graph tracer crashes on ARM. The function-graph tracer assumes that the kernel is built with frame pointers. We explicitly disabled the function-graph tracer when building Thumb2, since the Thumb2 ABI doesn't have frame pointers. We recently changed the way the unwinder method was selected, which seems to have made it more likely that we can end up with the function- graph tracer enabled but without the kernel built with frame pointers. Fix up the function graph tracer dependencies so the option is not available when we have no possibility of having frame pointers, and adjust the dependencies on the unwinder option to hide the non-frame pointer unwinder options if the function-graph tracer is enabled. Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org> Tested-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Add the io_uring and pidfd_send_signal system calls to all architectures. These system calls are designed to handle both native and compat tasks, so all entries are the same across architectures, only arm-compat and the generic tale still use an old format. Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com> (s390) Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Pull ARM SoC fixes from Olof Johansson:
"A collection of fixes from the last few weeks. Most of them are
smaller tweaks and fixes to DT and hardware descriptions for boards.
Some of the more significant ones are:
- eMMC and RGMII stability tweaks for rk3288
- DDC fixes for Rock PI 4
- Audio fixes for two TI am335x eval boards
- D_CAN clock fix for am335x
- Compilation fixes for clang
- !HOTPLUG_CPU compilation fix for one of the new platforms this
release (milbeaut)
- A revert of a gpio fix for nomadik that instead was fixed in the
gpio subsystem
- Whitespace fix for the DT JSON schema (no tabs allowed)"
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (25 commits)
ARM: milbeaut: fix build with !CONFIG_HOTPLUG_CPU
ARM: iop: don't use using 64-bit DMA masks
ARM: orion: don't use using 64-bit DMA masks
Revert "ARM: dts: nomadik: Fix polarity of SPI CS"
dt-bindings: cpu: Fix JSON schema
arm/mach-at91/pm : fix possible object reference leak
ARM: dts: at91: Fix typo in ISC_D0 on PC9
ARM: dts: Fix dcan clkctrl clock for am3
reset: meson-audio-arb: Fix missing .owner setting of reset_controller_dev
dt-bindings: reset: meson-g12a: Add missing USB2 PHY resets
ARM: dts: rockchip: Remove #address/#size-cells from rk3288-veyron gpio-keys
ARM: dts: rockchip: Remove #address/#size-cells from rk3288 mipi_dsi
ARM: dts: rockchip: Fix gpu opp node names for rk3288
ARM: dts: am335x-evmsk: Correct the regulators for the audio codec
ARM: dts: am335x-evm: Correct the regulators for the audio codec
ARM: OMAP2+: add missing of_node_put after of_device_is_available
ARM: OMAP1: ams-delta: Fix broken GPIO ID allocation
arm64: dts: stratix10: add the sysmgr-syscon property from the gmac's
arm64: dts: rockchip: fix rk3328 sdmmc0 write errors
arm64: dts: rockchip: fix rk3328 rgmii high tx error rate
...
When HOTPLUG_CPU is disabled, some fields in the smp operations
are not available or needed:
arch/arm/mach-milbeaut/platsmp.c:90:3: error: field designator 'cpu_die' does not refer to any field in type
'struct smp_operations'
.cpu_die = m10v_cpu_die,
^
arch/arm/mach-milbeaut/platsmp.c:91:3: error: field designator 'cpu_kill' does not refer to any field in type
'struct smp_operations'
.cpu_kill = m10v_cpu_kill,
^
Hide them in an #ifdef like the other platforms do.
Fixes: 9fb29c734f9e ("ARM: milbeaut: Add basic support for Milbeaut m10v SoC")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Olof Johansson <olof@lixom.net>
clang warns about statically defined DMA masks from the DMA_BIT_MASK
macro with length 64:
arch/arm/mach-iop13xx/setup.c:303:35: error: shift count >= width of type [-Werror,-Wshift-count-overflow]
static u64 iop13xx_adma_dmamask = DMA_BIT_MASK(64);
^~~~~~~~~~~~~~~~
include/linux/dma-mapping.h:141:54: note: expanded from macro 'DMA_BIT_MASK'
#define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
^ ~~~
The ones in iop shouldn't really be 64 bit masks, so changing them
to what the driver can support avoids the warning.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Olof Johansson <olof@lixom.net>
clang warns about statically defined DMA masks from the DMA_BIT_MASK
macro with length 64:
arch/arm/plat-orion/common.c:625:29: error: shift count >= width of type [-Werror,-Wshift-count-overflow]
.coherent_dma_mask = DMA_BIT_MASK(64),
^~~~~~~~~~~~~~~~
include/linux/dma-mapping.h:141:54: note: expanded from macro 'DMA_BIT_MASK'
#define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
The ones in orion shouldn't really be 64 bit masks, so changing them
to what the driver can support avoids the warning.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Olof Johansson <olof@lixom.net>