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commit fd7c99142d upstream.
Ensure that if userspace supplies insufficient data to
PTRACE_SETREGSET to fill all the registers, the thread's old
registers are preserved.
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Signed-off-by: Chris Metcalf <cmetcalf@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 524dabe1c6 upstream.
Commit b67a8b29df introduced logic to skip swiotlb allocation when all memory
is DMA accessible anyway.
While this is a great idea, __dma_alloc still calls swiotlb code unconditionally
to allocate memory when there is no CMA memory available. The swiotlb code is
called to ensure that we at least try get_free_pages().
Without initialization, swiotlb allocation code tries to access io_tlb_list
which is NULL. That results in a stack trace like this:
Unable to handle kernel NULL pointer dereference at virtual address 00000000
[...]
[<ffff00000845b908>] swiotlb_tbl_map_single+0xd0/0x2b0
[<ffff00000845be94>] swiotlb_alloc_coherent+0x10c/0x198
[<ffff000008099dc0>] __dma_alloc+0x68/0x1a8
[<ffff000000a1b410>] drm_gem_cma_create+0x98/0x108 [drm]
[<ffff000000abcaac>] drm_fbdev_cma_create_with_funcs+0xbc/0x368 [drm_kms_helper]
[<ffff000000abcd84>] drm_fbdev_cma_create+0x2c/0x40 [drm_kms_helper]
[<ffff000000abc040>] drm_fb_helper_initial_config+0x238/0x410 [drm_kms_helper]
[<ffff000000abce88>] drm_fbdev_cma_init_with_funcs+0x98/0x160 [drm_kms_helper]
[<ffff000000abcf90>] drm_fbdev_cma_init+0x40/0x58 [drm_kms_helper]
[<ffff000000b47980>] vc4_kms_load+0x90/0xf0 [vc4]
[<ffff000000b46a94>] vc4_drm_bind+0xec/0x168 [vc4]
[...]
Thankfully swiotlb code just learned how to not do allocations with the FORCE_NO
option. This patch configures the swiotlb code to use that if we decide not to
initialize the swiotlb framework.
Fixes: b67a8b29df ("arm64: mm: only initialize swiotlb when necessary")
Signed-off-by: Alexander Graf <agraf@suse.de>
CC: Jisheng Zhang <jszhang@marvell.com>
CC: Geert Uytterhoeven <geert+renesas@glider.be>
CC: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 1c8a946bf3 upstream.
The arm64 __page_to_voff() macro takes a parameter called 'page', and
also refers to 'struct page'. Thus, if the value passed in is not
called 'page', we'll refer to the wrong struct name (which might not
exist).
Fixes: 3fa72fe9c6 ("arm64: mm: fix __page_to_voff definition")
Acked-by: Mark Rutland <mark.rutland@arm.com>
Suggested-by: Volodymyr Babchuk <Volodymyr_Babchuk@epam.com>
Signed-off-by: Oleksandr Andrushchenko <Oleksandr_Andrushchenko@epam.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 90f92c631b upstream.
The following patch was sketched by Russell in response to my
crashes on the PB11MPCore after the patch for software-based
priviledged no access support for ARMv8.1. See this thread:
http://marc.info/?l=linux-arm-kernel&m=144051749807214&w=2
I am unsure what is going on, I suspect everyone involved in
the discussion is. I just want to repost this to get the
discussion restarted, as I still have to apply this patch
with every kernel iteration to get my PB11MPCore Realview
running.
Testing by Neil Armstrong on the Oxnas NAS has revealed that
this bug exist also on that widely deployed hardware, so
we are probably currently regressing all ARM11MPCore systems.
Cc: Russell King <linux@armlinux.org.uk>
Cc: Will Deacon <will.deacon@arm.com>
Fixes: a5e090acbf ("ARM: software-based priviledged-no-access support")
Tested-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit f0e8faa7a5 upstream.
This function clearly never worked and always returns true,
as pointed out by gcc-7:
arch/arm/mach-ux500/pm.c: In function 'prcmu_is_cpu_in_wfi':
arch/arm/mach-ux500/pm.c:137:212: error: ?:
using integer constants in boolean context, the expression
will always evaluate to 'true' [-Werror=int-in-bool-context]
With the added braces, the condition actually makes sense.
Fixes: 34fe6f107e ("mfd : Check if the other db8500 core is in WFI")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 1ea6af3216 upstream.
This fixes commit ab8dd3aed0 ("ARM: DTS: Add minimal Support for
Logic PD DM3730 SOM-LV") where the Card Detect and Write Protect
pins were improperly configured.
Fixes: ab8dd3aed0 ("ARM: DTS: Add minimal Support for Logic PD DM3730 SOM-LV")
Signed-off-by: Adam Ford <aford173@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 6ab5c2b662 upstream.
This patch fixes the following error:
sgtl5000 0-000a: Error reading chip id -6
imx-sgtl5000 sound: ASoC: CODEC DAI sgtl5000 not registered
imx-sgtl5000 sound: snd_soc_register_card failed (-517)
The problem was that the pinctrl group was linked to the sound driver
instead of the codec node. Since the codec is probed first, the sys_mclk
was missing and it would therefore fail to initialize.
Fixes: b32e700256 ("ARM: dts: imx: add Boundary Devices Nitrogen6_Max board")
Signed-off-by: Gary Bisson <gary.bisson@boundarydevices.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 3d37d41a14 upstream.
Commit d1f3156fc8 ("ARM: dts: omap2: Remove skeleton.dtsi usage")
removed the skeleton.dtsi usage since we want to get rid of it.
But this can cause issues when booting a kernel with a boot-loader
that doesn't create a chosen node if this isn't present in the DTB
since the decompressor relies on a pre-existing chosen node to be
available to insert the command line and merge other ATAGS info.
Fixes: d1f3156fc8 ("ARM: dts: omap2: Remove skeleton.dtsi usage")
Reported-by: Pali Rohar <pali.rohar@gmail.com>
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 23ab4c6183 upstream.
Commit 008a2ebcd6 ("ARM: dts: omap3: Remove skeleton.dtsi usage")
removed the skeleton.dtsi usage since we want to get rid of it.
But this can cause issues when booting a kernel with a boot-loader
that doesn't create a chosen node if this isn't present in the DTB
since the decompressor relies on a pre-existing chosen node to be
available to insert the command line and merge other ATAGS info.
Fixes: 008a2ebcd6 ("ARM: dts: omap3: Remove skeleton.dtsi usage")
Reported-by: Pali Rohar <pali.rohar@gmail.com>
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit ce95077d0c upstream.
Commit 75813028bb ("ARM: dts: am4372: Remove skeleton.dtsi usage")
removed the skeleton.dtsi usage since we want to get rid of it.
But this can cause issues when booting a kernel with a boot-loader
that doesn't create a chosen node if this isn't present in the DTB
since the decompressor relies on a pre-existing chosen node to be
available to insert the command line and merge other ATAGS info.
Fixes: 75813028bb ("ARM: dts: am4372: Remove skeleton.dtsi usage")
Reported-by: Pali Rohar <pali.rohar@gmail.com>
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit c9faa84cb9 upstream.
Commit 76a8548ea9 ("ARM: dts: omap5: Remove skeleton.dtsi usage")
removed the skeleton.dtsi usage since we want to get rid of it.
But this can cause issues when booting a kernel with a boot-loader
that doesn't create a chosen node if this isn't present in the DTB
since the decompressor relies on a pre-existing chosen node to be
available to insert the command line and merge other ATAGS info.
Fixes: 76a8548ea9 ("ARM: dts: omap5: Remove skeleton.dtsi usage")
Reported-by: Pali Rohar <pali.rohar@gmail.com>
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 6c565d1a63 upstream.
Commit da6269e7e3 ("ARM: dts: omap4: Remove skeleton.dtsi usage")
removed the skeleton.dtsi usage since we want to get rid of it.
But this can cause issues when booting a kernel with a boot-loader
that doesn't create a chosen node if this isn't present in the DTB
since the decompressor relies on a pre-existing chosen node to be
available to insert the command line and merge other ATAGS info.
Fixes: da6269e7e3 ("ARM: dts: omap4: Remove skeleton.dtsi usage")
Reported-by: Pali Rohar <pali.rohar@gmail.com>
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 1d8d6d3f2f upstream.
Commit f8bf01611c ("ARM: dts: am33xx: Remove skeleton.dtsi usage")
removed the skeleton.dtsi usage since we want to get rid of it.
But this can cause issues when booting a kernel with a boot-loader
that doesn't create a chosen node if this isn't present in the DTB
since the decompressor relies on a pre-existing chosen node to be
available to insert the command line and merge other ATAGS info.
Fixes: f8bf01611c ("ARM: dts: am33xx: Remove skeleton.dtsi usage")
Reported-by: Pali Rohar <pali.rohar@gmail.com>
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 9536fd30d4 upstream.
Commit 76155b378c ("ARM: dts: dm814x: Remove skeleton.dtsi usage")
removed the skeleton.dtsi usage since we want to get rid of it.
But this can cause issues when booting a kernel with a boot-loader
that doesn't create a chosen node if this isn't present in the DTB
since the decompressor relies on a pre-existing chosen node to be
available to insert the command line and merge other ATAGS info.
Fixes: 76155b378c ("ARM: dts: dm814x: Remove skeleton.dtsi usage")
Reported-by: Pali Rohar <pali.rohar@gmail.com>
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 6ed80b3a23 upstream.
Commit 06bfb9c199 ("ARM: dts: dm816x: Remove skeleton.dtsi usage")
removed the skeleton.dtsi usage since we want to get rid of it.
But this can cause issues when booting a kernel with a boot-loader
that doesn't create a chosen node if this isn't present in the DTB
since the decompressor relies on a pre-existing chosen node to be
available to insert the command line and merge other ATAGS info.
Fixes: 06bfb9c199 ("ARM: dts: dm816x: Remove skeleton.dtsi usage")
Reported-by: Pali Rohar <pali.rohar@gmail.com>
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 7f6c857b12 upstream.
Commit 55871eb6e2 ("ARM: dts: dra7: Remove skeleton.dtsi usage")
removed the skeleton.dtsi usage since we want to get rid of it.
But this can cause issues when booting a kernel with a boot-loader
that doesn't create a chosen node if this isn't present in the DTB
since the decompressor relies on a pre-existing chosen node to be
available to insert the command line and merge other ATAGS info.
Fixes: 55871eb6e2 ("ARM: dts: dra7: Remove skeleton.dtsi usage")
Reported-by: Pali Rohar <pali.rohar@gmail.com>
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit ad9e202aa1 upstream.
We cannot preserve partial fields for hardware breakpoints, because
the values written by userspace to the hardware breakpoint
registers can't subsequently be recovered intact from the hardware.
So, just reject attempts to write incomplete fields with -EINVAL.
Fixes: 478fcb2cdb ("arm64: Debugging support")
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Will Deacon <Will.Deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit aeb1f39d81 upstream.
This patch adds an explicit __reserved[] field to user_fpsimd_state
to replace what was previously unnamed padding.
This ensures that data in this region are propagated across
assignment rather than being left possibly uninitialised at the
destination.
Fixes: 60ffc30d56 ("arm64: Exception handling")
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Will Deacon <Will.Deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit a672401c00 upstream.
Ensure that if userspace supplies insufficient data to
PTRACE_SETREGSET to fill all the registers, the thread's old
registers are preserved.
Fixes: 5d220ff942 ("arm64: Better native ptrace support for compat tasks")
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Will Deacon <Will.Deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 9dd73f72f2 upstream.
Ensure that if userspace supplies insufficient data to
PTRACE_SETREGSET to fill all the registers, the thread's old
registers are preserved.
Fixes: 766a85d7bc ("arm64: ptrace: add NT_ARM_SYSTEM_CALL regset")
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Will Deacon <Will.Deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 9a17b876b5 upstream.
Ensure that if userspace supplies insufficient data to
PTRACE_SETREGSET to fill all the registers, the thread's old
registers are preserved.
Fixes: 478fcb2cdb ("arm64: Debugging support")
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Will Deacon <Will.Deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 7d9e8f71b9 upstream.
Generally, taking an unexpected exception should be a fatal event, and
bad_mode is intended to cater for this. However, it should be possible
to contain unexpected synchronous exceptions from EL0 without bringing
the kernel down, by sending a SIGILL to the task.
We tried to apply this approach in commit 9955ac47f4 ("arm64:
don't kill the kernel on a bad esr from el0"), by sending a signal for
any bad_mode call resulting from an EL0 exception.
However, this also applies to other unexpected exceptions, such as
SError and FIQ. The entry paths for these exceptions branch to bad_mode
without configuring the link register, and have no kernel_exit. Thus, if
we take one of these exceptions from EL0, bad_mode will eventually
return to the original user link register value.
This patch fixes this by introducing a new bad_el0_sync handler to cater
for the recoverable case, and restoring bad_mode to its original state,
whereby it calls panic() and never returns. The recoverable case
branches to bad_el0_sync with a bl, and returns to userspace via the
usual ret_to_user mechanism.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Fixes: 9955ac47f4 ("arm64: don't kill the kernel on a bad esr from el0")
Reported-by: Mark Salter <msalter@redhat.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 43849785e1 upstream.
Read access to the SPI flash are broken on da850-evm, i.e. the data
read is not what is actually programmed on the flash.
According to the datasheet for the M25P64 part present on the da850-evm,
if the SPI frequency is higher than 20MHz then the READ command is not
usable anymore and only the FAST_READ command can be used to read data.
This commit specifies in the DTS that we should use FAST_READ command
instead of the READ command.
Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Fabien Parent <fparent@baylibre.com>
[nsekhar@ti.com: subject line adjustment]
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
commit 87cb12910a upstream.
AHCI provides the register PORTS_IMPL to let the software know which port
is supported. The register must be initialized by the bootloader. However
in some cases u-boot doesn't properly initialize this value (if it is not
compiled with SATA support for example or if the SATA initialization fails).
The DTS entry "ports-implemented" can be used to override the value in
PORTS_IMPL.
Without this patch the SATA will not work in the following two cases:
* if there has been a failure to initialize SATA in u-boot.
* if ahci_platform module has been removed and re-inserted. The reason is
that the content of PORTS_IMPL is lost after the module is removed.
I suspect that it's because the controller is reset by the hwmod.
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Acked-by: Roger Quadros <rogerq@ti.com>
[tony@atomide.com: updated comments with what goes wrong]
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit ddc37832a1 upstream.
On APQ8060, the kernel crashes in arch_hw_breakpoint_init, taking an
undefined instruction trap within write_wb_reg. This is because Scorpion
CPUs erroneously appear to set DBGPRSR.SPD when WFI is issued, even if
the core is not powered down. When DBGPRSR.SPD is set, breakpoint and
watchpoint registers are treated as undefined.
It's possible to trigger similar crashes later on from userspace, by
requesting the kernel to install a breakpoint or watchpoint, as we can
go idle at any point between the reset of the debug registers and their
later use. This has always been the case.
Given that this has always been broken, no-one has complained until now,
and there is no clear workaround, disable hardware breakpoints and
watchpoints on Scorpion to avoid these issues.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reported-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Cc: Russell King <linux@armlinux.org.uk>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 178f358208 upstream.
IBM bit 31 (for the rest of us - bit 0) is a reserved field in the
instruction definition of mtspr and mfspr. Hardware is encouraged to
(and does) ignore it.
As a result, if userspace executes an mtspr DSCR with the reserved bit
set, we get a DSCR facility unavailable exception. The kernel fails to
match against the expected value/mask, and we silently return to
userspace to try and re-execute the same mtspr DSCR instruction. We
loop forever until the process is killed.
We should do something here, and it seems mirroring what hardware does
is the better option vs killing the process. While here, relax the
matching of mfspr PVR too.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit b34ca60148 upstream.
Ensure that if userspace supplies insufficient data to PTRACE_SETREGSET
to fill all the check pointed registers, the thread's old check pointed
registers are preserved.
Fixes: 9d3918f7c0 ("powerpc/ptrace: Enable support for NT_PPC_CVSX")
Fixes: 19cbcbf75a ("powerpc/ptrace: Enable support for NT_PPC_CFPR")
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 99dfe80a2a upstream.
Ensure that if userspace supplies insufficient data to PTRACE_SETREGSET
to fill all the registers, the thread's old registers are preserved.
Fixes: c6e6771b87 ("powerpc: Introduce VSX thread_struct and CONFIG_VSX")
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit d89f473ff6 upstream.
Use 0x10012 event code for PM_BRU_CMPL event in power9 event list
instead of current 0x40060.
Fixes: 34922527a2 ('powerpc/perf: Add power9 event list macros for generic and cache events')
Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 9728a7c8ab upstream.
The icp-opal call is missing the code from icp-native to recover
interrupts snatched by KVM. Without that, when running KVM, we can
get into a situation where an interrupt is lost and the CPU stuck
with an elevated CPPR.
Also harden replay by always checking the return from opal_int_eoi().
Fixes: d74361881f ("powerpc/xics: Add ICP OPAL backend")
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 0447819741 upstream.
kvm_s390_get_machine() populates the facility bitmap by copying bytes
from the host results that are stored in a 256 byte array in the prefix
page. The KVM code does use the size of the target buffer (2k), thus
copying and exposing unrelated kernel memory (mostly machine check
related logout data).
Let's use the size of the source buffer instead. This is ok, as the
target buffer will always be greater or equal than the source buffer as
the KVM internal buffers (and thus S390_ARCH_FAC_LIST_SIZE_BYTE) cover
the maximum possible size that is allowed by STFLE, which is 256
doublewords. All structures are zero allocated so we can leave bytes
256-2047 unchanged.
Add a similar fix for kvm_arch_init_vm().
Reported-by: Heiko Carstens <heiko.carstens@de.ibm.com>
[found with smatch]
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit eb1357d942 upstream.
commit d65283f7b6 added mod->arch.secstr under
CONFIG_ARC_DW2_UNWIND, but used it unconditionally which broke builds
when the option was disabled. Fix that by adjusting the #ifdef guard.
And while at it add a missing guard (for unwinder) in module.c as well
Reported-by: Waldemar Brodkorb <wbx@openadk.org>
Fixes: d65283f7b6 ("ARC: module: elide loop to save reference to .eh_frame")
Tested-by: Anton Kolesov <akolesov@synopsys.com>
Reviewed-by: Alexey Brodkin <abrodkin@synopsys.com>
[abrodkin: provided fixlet to Kconfig per failure in allnoconfig build]
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 89e9f7bcd8 upstream.
Martin reported that the Supermicro X8DTH-i/6/iF/6F advertises incorrect
host bridge windows via _CRS:
pci_root PNP0A08:00: host bridge window [io 0xf000-0xffff]
pci_root PNP0A08:01: host bridge window [io 0xf000-0xffff]
Both bridges advertise the 0xf000-0xffff window, which cannot be correct.
Work around this by ignoring _CRS on this system. The downside is that we
may not assign resources correctly to hot-added PCI devices (if they are
possible on this system).
Link: https://bugzilla.kernel.org/show_bug.cgi?id=42606
Reported-by: Martin Burnicki <martin.burnicki@meinberg.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 7245f67f86 upstream.
Fixes: ("ab8dd3aed011 ARM: DTS: Add minimal Support for Logic PD
DM3730 SOM-LV")
This adds the dts file into the Makefile. This should have been included in
the original patch.
V2: Update patch description - same source code
V1: Original patch
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Adam Ford <aford173@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit af92305e56 upstream.
On i.MX31 AVIC interrupt controller base address is at 0x68000000.
The problem was shadowed by the AVIC driver, which takes the correct
base address from a SoC specific header file.
Fixes: d2a37b3d91 ("ARM i.MX31: Add devicetree support")
Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 1f87aee6a2 upstream.
i.MX31 Clock Control Module controller is found on AIPS2 bus, move it
there from SPBA bus to avoid a conflict of device IO space mismatch.
Fixes: ef0e4a606f ("ARM: mx31: Replace clk_register_clkdev with clock DT lookup")
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 2e575cbc93 upstream.
The type of AVIC interrupt controller found on i.MX31 is one-cell,
namely 31 for CCM DVFS and 53 for CCM, however for clock control
module its interrupts are specified as 3-cells, fix it.
Fixes: ef0e4a606f ("ARM: mx31: Replace clk_register_clkdev with clock DT lookup")
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 72649a4606 upstream.
According to the schematics of CompuLab's sbc-fx6 baseboard and the
vendor devicetree GPIO_16 is *not* muxed to ENET_REF_CLK but to SPDIF_IN.
Remove the wrong pinctrl setting.
Fixes: 682d055e6a ("ARM: dts: Add initial support for cm-fx6.")
Signed-off-by: Christopher Spinrath <christopher.spinrath@rwth-aachen.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 7d891a685d upstream.
The address of the mailbox node in the bcm283x.dtsi also has a typo.
So fix it accordingly.
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Fixes: 05b682b7a3 ("ARM: bcm2835: dt: Add the mailbox to the device tree")
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 69d012345a upstream.
In current code, the @changed always returns the last one's status for
the huge page with the contiguous bit set. This is really not what we
want. Even one of the PTEs is changed, we should tell it to the caller.
This patch fixes this issue.
Fixes: 66b3923a1a ("arm64: hugetlb: add support for PTE contiguous bit")
Signed-off-by: Huang Shijie <shijie.huang@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 20156ce236 upstream.
The find_num_contig() will return 1 when the pmd is not present.
It will cause a kernel dead loop in the following scenaro:
1.) pmd entry is not present.
2.) the page fault occurs:
... hugetlb_fault() --> hugetlb_no_page() --> set_huge_pte_at()
3.) set_huge_pte_at() will only set the first PMD entry, since the
find_num_contig just return 1 in this case. So the PMD entries
are all empty except the first one.
4.) when kernel accesses the address mapped by the second PMD entry,
a new page fault occurs:
... hugetlb_fault() --> huge_ptep_set_access_flags()
The second PMD entry is still empty now.
5.) When the kernel returns, the access will cause a page fault again.
The kernel will run like the "4)" above.
We will see a dead loop since here.
The dead loop is caught in the 32M hugetlb page (2M PMD + Contiguous bit).
This patch removes wrong pmd check, and fixes this dead loop.
This patch also removes the redundant checks for PGD/PUD in
the find_num_contig().
Acked-by: Steve Capper <steve.capper@arm.com>
Signed-off-by: Huang Shijie <shijie.huang@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 0c2f0afe35 upstream.
The libhugetlbfs meets several failures since the following functions
do not use the correct address:
huge_ptep_get_and_clear()
huge_ptep_set_access_flags()
huge_ptep_set_wrprotect()
huge_ptep_clear_flush()
This patch fixes the wrong address for them.
Signed-off-by: Huang Shijie <shijie.huang@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit d4791db527 upstream.
Whenever a PE is initialised in powernv, opal_pci_eeh_freeze_clear() is
called. This is to remove any existing freeze, and has no negative side
effects if the PE is already in an unfrozen state. On PHB backends that
don't support this operation and return OPAL_UNSUPPORTED, this creates a
scary and misleading warning message.
Skip the warning message on init if OPAL_UNSUPPORTED is returned.
As far as I'm aware, this currently only affects NPUs.
Fixes: 313483d ("powerpc/powernv: Unfreeze PE on allocation")
Signed-off-by: Russell Currey <ruscur@russell.cc>
Acked-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Reviewed-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit fe0f316816 upstream.
Make sure to drop any reference taken by bus_find_device() in the sysfs
callbacks that are used to create and destroy devices based on
device-tree entries.
Fixes: 6bccf755ff ("[POWERPC] ibmebus: dynamic addition/removal of adapters, some code cleanup")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 815a7141c4 upstream.
Make sure to drop any reference taken by bus_find_device() when creating
devices during init and driver registration.
Fixes: 55347cc996 ("[POWERPC] ibmebus: Add device creation and bus probing based on of_device")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 555c16328a upstream.
Version 3.00 of the ISA states that the PATS (partition table size) field
of the PTCR (partition table control register) and the PRTS (process table
size) field of the partition table entry must both be less than or equal
to 24. However the actual size of the partition and process tables is equal
to 2 to the power of 12 plus the PATS and PRTS fields, respectively. This
means that the max allowable size of each of these tables is 2^36 or 64GB
for both.
Thus when checking the size shift for each we should be checking for values
of greater than 36 instead of the current check for shifts larger than 24
and 23.
Fixes: 2bfd65e45e
Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
Reviewed-by: Balbir Singh <bsingharora@gmail.com>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
