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Clang tries to warn when there's a mismatch between an operand's size,
and the size of the register it is held in, as this may indicate a bug.
Specifically, clang warns when the operand's type is less than 64 bits
wide, and the register is used unqualified (i.e. %N rather than %xN or
%wN).
Unfortunately clang can generate these warnings for unreachable code.
For example, for code like:
do { \
typeof(*(ptr)) __v = (v); \
switch(sizeof(*(ptr))) { \
case 1: \
// assume __v is 1 byte wide \
asm ("{op}b %w0" : : "r" (v)); \
break; \
case 8: \
// assume __v is 8 bytes wide \
asm ("{op} %0" : : "r" (v)); \
break; \
}
while (0)
... if op() were passed a char value and pointer to char, clang may
produce a warning for the unreachable case where sizeof(*(ptr)) is 8.
For the same reasons, clang produces warnings when __put_user_err() is
used for types that are less than 64 bits wide.
We could avoid this with a cast to a fixed-width type in each of the
cases. However, GCC will then warn that pointer types are being cast to
mismatched integer sizes (in unreachable paths).
Another option would be to use the same union trickery as we do for
__smp_store_release() and __smp_load_acquire(), but this is fairly
invasive.
Instead, this patch suppresses the clang warning by using an x modifier
in the assembly for the 8 byte case of __put_user_err(). No additional
work is necessary as the value has been cast to typeof(*(ptr)), so the
compiler will have performed any necessary extension for the reachable
case.
For consistency, __get_user_err() is also updated to use the x modifier
for its 8 byte case.
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reported-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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The LSE atomic code uses asm register variables to ensure that
parameters are allocated in specific registers. In the majority of cases
we specifically ask for an x register when using 64-bit values, but in a
couple of cases we use a w regsiter for a 64-bit value.
For asm register variables, the compiler only cares about the register
index, with wN and xN having the same meaning. The compiler determines
the register size to use based on the type of the variable. Thus, this
inconsistency is merely confusing, and not harmful to code generation.
For consistency, this patch updates those cases to use the x register
alias. There should be no functional change as a result of this patch.
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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Our compat swp emulation holds the compat user address in an unsigned
int, which it passes to __user_swpX_asm(). When a 32-bit value is passed
in a register, the upper 32 bits of the register are unknown, and we
must extend the value to 64 bits before we can use it as a base address.
This patch casts the address to unsigned long to ensure it has been
suitably extended, avoiding the potential issue, and silencing a related
warning from clang.
Fixes: bd35a4adc413 ("arm64: Port SWP/SWPB emulation support from arm")
Cc: <stable@vger.kernel.org> # 3.19.x-
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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Our access_ok() simply hands its arguments over to __range_ok(), which
implicitly assummes that the addr parameter is 64 bits wide. This isn't
necessarily true for compat code, which might pass down a 32-bit address
parameter.
In these cases, we don't have a guarantee that the address has been zero
extended to 64 bits, and the upper bits of the register may contain
unknown values, potentially resulting in a suprious failure.
Avoid this by explicitly casting the addr parameter to an unsigned long
(as is done on other architectures), ensuring that the parameter is
widened appropriately.
Fixes: 0aea86a2176c ("arm64: User access library functions")
Cc: <stable@vger.kernel.org> # 3.7.x-
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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When an inline assembly operand's type is narrower than the register it
is allocated to, the least significant bits of the register (up to the
operand type's width) are valid, and any other bits are permitted to
contain any arbitrary value. This aligns with the AAPCS64 parameter
passing rules.
Our __smp_store_release() implementation does not account for this, and
implicitly assumes that operands have been zero-extended to the width of
the type being stored to. Thus, we may store unknown values to memory
when the value type is narrower than the pointer type (e.g. when storing
a char to a long).
This patch fixes the issue by casting the value operand to the same
width as the pointer operand in all cases, which ensures that the value
is zero-extended as we expect. We use the same union trickery as
__smp_load_acquire and {READ,WRITE}_ONCE() to avoid GCC complaining that
pointers are potentially cast to narrower width integers in unreachable
paths.
A whitespace issue at the top of __smp_store_release() is also
corrected.
No changes are necessary for __smp_load_acquire(). Load instructions
implicitly clear any upper bits of the register, and the compiler will
only consider the least significant bits of the register as valid
regardless.
Fixes: 47933ad41a86 ("arch: Introduce smp_load_acquire(), smp_store_release()")
Fixes: 878a84d5a8a1 ("arm64: add missing data types in smp_load_acquire/smp_store_release")
Cc: <stable@vger.kernel.org> # 3.14.x-
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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The inline assembly in __XCHG_CASE() uses a +Q constraint to hazard
against other accesses to the memory location being exchanged. However,
the pointer passed to the constraint is a u8 pointer, and thus the
hazard only applies to the first byte of the location.
GCC can take advantage of this, assuming that other portions of the
location are unchanged, as demonstrated with the following test case:
union u {
unsigned long l;
unsigned int i[2];
};
unsigned long update_char_hazard(union u *u)
{
unsigned int a, b;
a = u->i[1];
asm ("str %1, %0" : "+Q" (*(char *)&u->l) : "r" (0UL));
b = u->i[1];
return a ^ b;
}
unsigned long update_long_hazard(union u *u)
{
unsigned int a, b;
a = u->i[1];
asm ("str %1, %0" : "+Q" (*(long *)&u->l) : "r" (0UL));
b = u->i[1];
return a ^ b;
}
The linaro 15.08 GCC 5.1.1 toolchain compiles the above as follows when
using -O2 or above:
0000000000000000 <update_char_hazard>:
0: d2800001 mov x1, #0x0 // #0
4: f9000001 str x1, [x0]
8: d2800000 mov x0, #0x0 // #0
c: d65f03c0 ret
0000000000000010 <update_long_hazard>:
10: b9400401 ldr w1, [x0,#4]
14: d2800002 mov x2, #0x0 // #0
18: f9000002 str x2, [x0]
1c: b9400400 ldr w0, [x0,#4]
20: 4a000020 eor w0, w1, w0
24: d65f03c0 ret
This patch fixes the issue by passing an unsigned long pointer into the
+Q constraint, as we do for our cmpxchg code. This may hazard against
more than is necessary, but this is better than missing a necessary
hazard.
Fixes: 305d454aaa29 ("arm64: atomics: implement native {relaxed, acquire, release} atomics")
Cc: <stable@vger.kernel.org> # 4.4.x-
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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When handling a data abort from EL0, we currently zero the top byte of
the faulting address, as we assume the address is a TTBR0 address, which
may contain a non-zero address tag. However, the address may be a TTBR1
address, in which case we should not zero the top byte. This patch fixes
that. The effect is that the full TTBR1 address is passed to the task's
signal handler (or printed out in the kernel log).
When handling a data abort from EL1, we leave the faulting address
intact, as we assume it's either a TTBR1 address or a TTBR0 address with
tag 0x00. This is true as far as I'm aware, we don't seem to access a
tagged TTBR0 address anywhere in the kernel. Regardless, it's easy to
forget about address tags, and code added in the future may not always
remember to remove tags from addresses before accessing them. So add tag
handling to the EL1 data abort handler as well. This also makes it
consistent with the EL0 data abort handler.
Fixes: d50240a5f6ce ("arm64: mm: permit use of tagged pointers at EL0")
Cc: <stable@vger.kernel.org> # 3.12.x-
Reviewed-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Kristina Martsenko <kristina.martsenko@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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When we take a watchpoint exception, the address that triggered the
watchpoint is found in FAR_EL1. We compare it to the address of each
configured watchpoint to see which one was hit.
The configured watchpoint addresses are untagged, while the address in
FAR_EL1 will have an address tag if the data access was done using a
tagged address. The tag needs to be removed to compare the address to
the watchpoints.
Currently we don't remove it, and as a result can report the wrong
watchpoint as being hit (specifically, always either the highest TTBR0
watchpoint or lowest TTBR1 watchpoint). This patch removes the tag.
Fixes: d50240a5f6ce ("arm64: mm: permit use of tagged pointers at EL0")
Cc: <stable@vger.kernel.org> # 3.12.x-
Acked-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Kristina Martsenko <kristina.martsenko@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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When we emulate userspace cache maintenance in the kernel, we can
currently send the task a SIGSEGV even though the maintenance was done
on a valid address. This happens if the address has a non-zero address
tag, and happens to not be mapped in.
When we get the address from a user register, we don't currently remove
the address tag before performing cache maintenance on it. If the
maintenance faults, we end up in either __do_page_fault, where find_vma
can't find the VMA if the address has a tag, or in do_translation_fault,
where the tagged address will appear to be above TASK_SIZE. In both
cases, the address is not mapped in, and the task is sent a SIGSEGV.
This patch removes the tag from the address before using it. With this
patch, the fault is handled correctly, the address gets mapped in, and
the cache maintenance succeeds.
As a second bug, if cache maintenance (correctly) fails on an invalid
tagged address, the address gets passed into arm64_notify_segfault,
where find_vma fails to find the VMA due to the tag, and the wrong
si_code may be sent as part of the siginfo_t of the segfault. With this
patch, the correct si_code is sent.
Fixes: 7dd01aef0557 ("arm64: trap userspace "dc cvau" cache operation on errata-affected core")
Cc: <stable@vger.kernel.org> # 4.8.x-
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Kristina Martsenko <kristina.martsenko@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild UAPI updates from Masahiro Yamada:
"Improvement of headers_install by Nicolas Dichtel.
It has been long since the introduction of uapi directories, but the
de-coupling of exported headers has not been completed. Headers listed
in header-y are exported whether they exist in uapi directories or
not. His work fixes this inconsistency.
All (and only) headers under uapi directories are now exported. The
asm-generic wrappers are still exceptions, but this is a big step
forward"
* tag 'kbuild-uapi-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
arch/include: remove empty Kbuild files
uapi: export all arch specifics directories
uapi: export all headers under uapi directories
smc_diag.h: fix include from userland
btrfs_tree.h: fix include from userland
uapi: includes linux/types.h before exporting files
Makefile.headersinst: remove destination-y option
Makefile.headersinst: cleanup input files
x86: stop exporting msr-index.h to userland
nios2: put setup.h in uapi
h8300: put bitsperlong.h in uapi
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Regularly, when a new header is created in include/uapi/, the developer
forgets to add it in the corresponding Kbuild file. This error is usually
detected after the release is out.
In fact, all headers under uapi directories should be exported, thus it's
useless to have an exhaustive list.
After this patch, the following files, which were not exported, are now
exported (with make headers_install_all):
asm-arc/kvm_para.h
asm-arc/ucontext.h
asm-blackfin/shmparam.h
asm-blackfin/ucontext.h
asm-c6x/shmparam.h
asm-c6x/ucontext.h
asm-cris/kvm_para.h
asm-h8300/shmparam.h
asm-h8300/ucontext.h
asm-hexagon/shmparam.h
asm-m32r/kvm_para.h
asm-m68k/kvm_para.h
asm-m68k/shmparam.h
asm-metag/kvm_para.h
asm-metag/shmparam.h
asm-metag/ucontext.h
asm-mips/hwcap.h
asm-mips/reg.h
asm-mips/ucontext.h
asm-nios2/kvm_para.h
asm-nios2/ucontext.h
asm-openrisc/shmparam.h
asm-parisc/kvm_para.h
asm-powerpc/perf_regs.h
asm-sh/kvm_para.h
asm-sh/ucontext.h
asm-tile/shmparam.h
asm-unicore32/shmparam.h
asm-unicore32/ucontext.h
asm-x86/hwcap2.h
asm-xtensa/kvm_para.h
drm/armada_drm.h
drm/etnaviv_drm.h
drm/vgem_drm.h
linux/aspeed-lpc-ctrl.h
linux/auto_dev-ioctl.h
linux/bcache.h
linux/btrfs_tree.h
linux/can/vxcan.h
linux/cifs/cifs_mount.h
linux/coresight-stm.h
linux/cryptouser.h
linux/fsmap.h
linux/genwqe/genwqe_card.h
linux/hash_info.h
linux/kcm.h
linux/kcov.h
linux/kfd_ioctl.h
linux/lightnvm.h
linux/module.h
linux/nbd-netlink.h
linux/nilfs2_api.h
linux/nilfs2_ondisk.h
linux/nsfs.h
linux/pr.h
linux/qrtr.h
linux/rpmsg.h
linux/sched/types.h
linux/sed-opal.h
linux/smc.h
linux/smc_diag.h
linux/stm.h
linux/switchtec_ioctl.h
linux/vfio_ccw.h
linux/wil6210_uapi.h
rdma/bnxt_re-abi.h
Note that I have removed from this list the files which are generated in every
exported directories (like .install or .install.cmd).
Thanks to Julien Floret <julien.floret@6wind.com> for the tip to get all
subdirs with a pure makefile command.
For the record, note that exported files for asm directories are a mix of
files listed by:
- include/uapi/asm-generic/Kbuild.asm;
- arch/<arch>/include/uapi/asm/Kbuild;
- arch/<arch>/include/asm/Kbuild.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
Acked-by: Mark Salter <msalter@redhat.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull misc Kbuild updates from Masahiro Yamada:
- clean up builddeb script
- use full path for KBUILD_IMAGE to fix rpm-pkg build
- fix objdiff tool to ignore debug info
* tag 'kbuild-misc-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
builddeb: fix typo
builddeb: Update a few outdated and hardcoded strings
deb-pkg: Remove the KBUILD_IMAGE workaround
unicore32: Use full path in KBUILD_IMAGE definition
sh: Use full path in KBUILD_IMAGE definition
arc: Use full path in KBUILD_IMAGE definition
arm: Use full path in KBUILD_IMAGE definition
arm64: Use full path in KBUILD_IMAGE definition
scripts: objdiff: Ignore debug info when comparing
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The KBUILD_IMAGE variable is used by the rpm and deb-pkg targets, which
expect it to point to the image file in the build directory. The
builddeb script has a workaround for architectures which only provide
the basename, but let's provide a clean interface for packaging tools.
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Michal Marek <mmarek@suse.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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Pull more KVM updates from Paolo Bonzini:
"ARM:
- bugfixes
- moved shared 32-bit/64-bit files to virt/kvm/arm
- support for saving/restoring virtual ITS state to userspace
PPC:
- XIVE (eXternal Interrupt Virtualization Engine) support
x86:
- nVMX improvements, including emulated page modification logging
(PML) which brings nice performance improvements on some workloads"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (45 commits)
KVM: arm/arm64: vgic-its: Cleanup after failed ITT restore
KVM: arm/arm64: Don't call map_resources when restoring ITS tables
KVM: arm/arm64: Register ITS iodev when setting base address
KVM: arm/arm64: Get rid of its->initialized field
KVM: arm/arm64: Register iodevs when setting redist base and creating VCPUs
KVM: arm/arm64: Slightly rework kvm_vgic_addr
KVM: arm/arm64: Make vgic_v3_check_base more broadly usable
KVM: arm/arm64: Refactor vgic_register_redist_iodevs
KVM: Add kvm_vcpu_get_idx to get vcpu index in kvm->vcpus
nVMX: Advertise PML to L1 hypervisor
nVMX: Implement emulated Page Modification Logging
kvm: x86: Add a hook for arch specific dirty logging emulation
kvm: nVMX: Validate CR3 target count on nested VM-entry
KVM: set no_llseek in stat_fops_per_vm
KVM: arm/arm64: vgic: Rename kvm_vgic_vcpu_init to kvm_vgic_vcpu_enable
KVM: arm/arm64: Clarification and relaxation to ITS save/restore ABI
KVM: arm64: vgic-v3: KVM_DEV_ARM_VGIC_SAVE_PENDING_TABLES
KVM: arm64: vgic-its: Fix pending table sync
KVM: arm64: vgic-its: ITT save and restore
KVM: arm64: vgic-its: Device table save/restore
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git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
Second round of KVM/ARM Changes for v4.12.
Changes include:
- A fix related to the 32-bit idmap stub
- A fix to the bitmask used to deode the operands of an AArch32 CP
instruction
- We have moved the files shared between arch/arm/kvm and
arch/arm64/kvm to virt/kvm/arm
- We add support for saving/restoring the virtual ITS state to
userspace
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This patch adds a new attribute to GICV3 KVM device
KVM_DEV_ARM_VGIC_GRP_CTRL group. This allows userspace to
flush all GICR pending tables into guest RAM.
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Christoffer Dall <cdall@linaro.org>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
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Introduce new attributes in KVM_DEV_ARM_VGIC_GRP_CTRL group:
- KVM_DEV_ARM_ITS_SAVE_TABLES: saves the ITS tables into guest RAM
- KVM_DEV_ARM_ITS_RESTORE_TABLES: restores them into VGIC internal
structures.
We hold the vcpus lock during the save and restore to make
sure no vcpu is running.
At this stage the functionality is not yet implemented. Only
the skeleton is put in place.
Signed-off-by: Eric Auger <eric.auger@redhat.com>
[Given we will move the iodev register until setting the base addr]
Reviewed-by: Christoffer Dall <cdall@linaro.org>
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The ITS KVM device exposes a new KVM_DEV_ARM_VGIC_GRP_ITS_REGS
group which allows the userspace to save/restore ITS registers.
At this stage the get/set/has operations are not yet implemented.
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Christoffer Dall <cdall@linaro.org>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
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For some time now we have been having a lot of shared functionality
between the arm and arm64 KVM support in arch/arm, which not only
required a horrible inter-arch reference from the Makefile in
arch/arm64/kvm, but also created confusion for newcomers to the code
base, as was recently seen on the mailing list.
Further, it causes confusion for things like cscope, which needs special
attention to index specific shared files for arm64 from the arm tree.
Move the shared files into virt/kvm/arm and move the trace points along
with it. When moving the tracepoints we have to modify the way the vgic
creates definitions of the trace points, so we take the chance to
include the VGIC tracepoints in its very own special vgic trace.h file.
Signed-off-by: Christoffer Dall <cdall@linaro.org>
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Our 32bit CP14/15 handling inherited some of the ARMv7 code for handling
the trapped system registers, completely missing the fact that the
fields for Rt and Rt2 are now 5 bit wide, and not 4...
Let's fix it, and provide an accessor for the most common Rt case.
Cc: stable@vger.kernel.org
Reviewed-by: Christoffer Dall <cdall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <cdall@linaro.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull TEE driver infrastructure and OP-TEE drivers from Arnd Bergmann:
"This introduces a generic TEE framework in the kernel, to handle
trusted environemtns (security coprocessor or software implementations
such as OP-TEE/TrustZone). I'm sending it separately from the other
arm-soc driver changes to give it a little more visibility, once the
subsystem is merged, we will likely keep this in the arm₋soc drivers
branch or have the maintainers submit pull requests directly,
depending on the patch volume.
I have reviewed earlier versions in the past, and have reviewed the
latest version in person during Linaro Connect BUD17.
Here is my overall assessment of the subsystem:
- There is clearly demand for this, both for the generic
infrastructure and the specific OP-TEE implementation.
- The code has gone through a large number of reviews, and the review
comments have all been addressed, but the reviews were not coming
up with serious issues any more and nobody volunteered to vouch for
the quality.
- The user space ioctl interface is sufficient to work with the
OP-TEE driver, and it should in principle work with other TEE
implementations that follow the GlobalPlatform[1] standards, but it
might need to be extended in minor ways depending on specific
requirements of future TEE implementations
- The main downside of the API to me is how the user space is tied to
the TEE implementation in hardware or firmware, but uses a generic
way to communicate with it. This seems to be an inherent problem
with what it is trying to do, and I could not come up with any
better solution than what is implemented here.
For a detailed history of the patch series, see
https://lkml.org/lkml/2017/3/10/1277"
* tag 'armsoc-tee' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
arm64: dt: hikey: Add optee node
Documentation: tee subsystem and op-tee driver
tee: add OP-TEE driver
tee: generic TEE subsystem
dt/bindings: add bindings for optee
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git://git.linaro.org:/people/jens.wiklander/linux-tee into next/tee
Pull "generic TEE subsystem for v4.12"
Introduce generic TEE subsystem:
- the TEE subsystem itself
- an OP-TEE driver using the subsystem
- optee bindings
- optee node for hi6220-hikey.dts
* tag 'tee-drv-for-4.12' of git://git.linaro.org:/people/jens.wiklander/linux-tee:
arm64: dt: hikey: Add optee node
Documentation: tee subsystem and op-tee driver
tee: add OP-TEE driver
tee: generic TEE subsystem
dt/bindings: add bindings for optee
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Acked-by: Wei Xu <xuwei5@hisilicon.com>
Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull IOMMU updates from Joerg Roedel:
- code optimizations for the Intel VT-d driver
- ability to switch off a previously enabled Intel IOMMU
- support for 'struct iommu_device' for OMAP, Rockchip and Mediatek
IOMMUs
- header optimizations for IOMMU core code headers and a few fixes that
became necessary in other parts of the kernel because of that
- ACPI/IORT updates and fixes
- Exynos IOMMU optimizations
- updates for the IOMMU dma-api code to bring it closer to use per-cpu
iova caches
- new command-line option to set default domain type allocated by the
iommu core code
- another command line option to allow the Intel IOMMU switched off in
a tboot environment
- ARM/SMMU: TLB sync optimisations for SMMUv2, Support for using an
IDENTITY domain in conjunction with DMA ops, Support for SMR masking,
Support for 16-bit ASIDs (was previously broken)
- various other small fixes and improvements
* tag 'iommu-updates-v4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (63 commits)
soc/qbman: Move dma-mapping.h include to qman_priv.h
soc/qbman: Fix implicit header dependency now causing build fails
iommu: Remove trace-events include from iommu.h
iommu: Remove pci.h include from trace/events/iommu.h
arm: dma-mapping: Don't override dma_ops in arch_setup_dma_ops()
ACPI/IORT: Fix CONFIG_IOMMU_API dependency
iommu/vt-d: Don't print the failure message when booting non-kdump kernel
iommu: Move report_iommu_fault() to iommu.c
iommu: Include device.h in iommu.h
x86, iommu/vt-d: Add an option to disable Intel IOMMU force on
iommu/arm-smmu: Return IOVA in iova_to_phys when SMMU is bypassed
iommu/arm-smmu: Correct sid to mask
iommu/amd: Fix incorrect error handling in amd_iommu_bind_pasid()
iommu: Make iommu_bus_notifier return NOTIFY_DONE rather than error code
omap3isp: Remove iommu_group related code
iommu/omap: Add iommu-group support
iommu/omap: Make use of 'struct iommu_device'
iommu/omap: Store iommu_dev pointer in arch_data
iommu/omap: Move data structures to omap-iommu.h
iommu/omap: Drop legacy-style device support
...
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The include file does not need any PCI specifics, so remove
that include. Also fix the places that relied on it.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
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With arch_setup_dma_ops now being called late during device's probe after
the device's iommu is probed, the notifier trick required to handle the
early setup of dma_ops before the iommu group gets created is not
required. So removing the notifier's here.
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Hanjun Guo <hanjun.guo@linaro.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Sricharan R <sricharan@codeaurora.org>
[rm: clean up even more]
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM 64-bit DT updates from Olof Johansson:
"Device-tree updates for arm64 platforms. Just as with 32-bit, a bunch
of smaller changes, but also some new platforms that are worth
mentioning:
- Rockchip RK3399 platforms for Chromebooks, including Samsung
Chromebook Plus (Kevin)
- Orange Pi PC2 (Allwinner H5)
- Freescale LS2088A and LS1088A SoCs
- Expanded support for Nvidia Tegra186 (and Jetson TX2)"
* tag 'armsoc-dt64' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (180 commits)
arm64: dts: Add basic DT to support Spreadtrum's SP9860G
arm64: dts: exynos: Use - instead of @ for DT OPP entries
arm64: dts: exynos: Add support for s6e3hf2 panel device on TM2e board
arm64: dts: juno: add information about L1 and L2 caches
arm64: dts: juno: fix few unit address format warnings
arm64: marvell: dts: enable the crypto engine on the Armada 8040 DB
arm64: marvell: dts: enable the crypto engine on the Armada 7040 DB
arm64: marvell: dts: add crypto engine description for 7k/8k
arm64: dts: marvell: add sdhci support for Armada 7K/8K
arm64: dts: marvell: add eMMC support for Armada 37xx
arm64: dts: hisi: add pinctrl dtsi file for HiKey960 development board
arm64: dts: hisi: add drive strength levels of the pins for Hi3660 SoC
arm64: dts: hisi: enable the NIC and SAS for the hip07-d05 board
arm64: dts: hisi: add SAS nodes for the hip07 SoC
arm64: dts: hisi: add RoCE nodes for the hip07 SoC
arm64: dts: hisi: add network related nodes for the hip07 SoC
arm64: dts: hisi: add mbigen nodes for the hip07 SoC
arm64: dts: rockchip: fix the memory size of PX5 Evaluation board
arm64: dts: hisilicon: add dts files for hi3798cv200-poplar board
dt-bindings: arm: hisilicon: add bindings for hi3798cv200 SoC and Poplar board
...
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SC9860G is a 8 cores of A53 SoC with 4G LTE support SoC from Spreadtrum.
According to regular hierarchy of sprd dts, whale2.dtsi contains SoC
peripherals IP nodes, sc9860.dtsi contains stuff related to ARM core stuff
and sp9860g dts is for the board level.
Signed-off-by: Orson Zhai <orson.zhai@spreadtrum.com>
Signed-off-by: Chunyan Zhang <chunyan.zhang@spreadtrum.com>
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into next/dt64
Pull "Second update of Samsung DeviceTree ARM64 for v4.12" from Krzysztof Kozłowski:
- Fix DTC warnings in Exynos ARM64 Device Tree sources.
- Add panel node to TM2E board.
* tag 'samsung-dt64-4.12-3' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
arm64: dts: exynos: Use - instead of @ for DT OPP entries
arm64: dts: exynos: Add support for s6e3hf2 panel device on TM2e board
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Compiling the DT file with W=1, DTC warns like follows:
Warning (unit_address_vs_reg): Node /opp_table0/opp@1000000000 has a
unit name, but no reg property
Fix this by replacing '@' with '-' as the OPP nodes will never have a
"reg" property.
Reported-by: Krzysztof Kozlowski <krzk@kernel.org>
Reported-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Suggested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
[k.kozlowski: Split patch per ARM and ARM64]
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
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This patch adds the panel device tree node for s6e3hf2 display
controller to TM2e dts.
Signed-off-by: Hoegeun Kwon <hoegeun.kwon@samsung.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into next/dt64
Pull "ARMv8 Juno DT fixes for v4.12" from Sudeep Holla:
1. Couple of fixes to remove device tree warnings introduced with
recently added checks in DTC
2. Add information about L1 and L2 caches to Juno device trees as
CCSIDR-based cacheinfo probing is now removed
* tag 'juno-fixes-4.12' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
arm64: dts: juno: add information about L1 and L2 caches
arm64: dts: juno: fix few unit address format warnings
arm64: dts: juno: fix PCI bus dtc warnings
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Commit a8d4636f96ad ("arm64: cacheinfo: Remove CCSIDR-based cache
information probing") removed mechanism to extract cache information
based on CCSIDR register as the architecture explicitly states no
inference about the actual sizes of caches based on CCSIDR registers.
Commit 9a802431c527 ("arm64: cacheinfo: add support to override cache
levels via device tree") had already provided options to override cache
information from the device tree.
This patch adds the information about L1 and L2 caches on all variants
of Juno platform.
Cc: Will Deacon <will.deacon@arm.com>
Cc: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
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This patch fixes the following set of warnings on juno.
smb@08000000 unit name should not have leading 0s
sysctl@020000 simple-bus unit address format error, expected "20000"
apbregs@010000 simple-bus unit address format error, expected "10000"
mmci@050000 simple-bus unit address format error, expected "50000"
kmi@060000 simple-bus unit address format error, expected "60000"
kmi@070000 simple-bus unit address format error, expected "70000"
wdt@0f0000 simple-bus unit address format error, expected "f0000"
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
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dtc recently added PCI bus checks. Fix these warnings.
Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
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next/dt64
mvebu dt64 for 4.12 (part 2)
- crypto engine description for the Armada 7k/8k SoCs and the boards
using it
- SDHCI description for the Armada 37xx and 7k/8k SoCs and the boards
using it
* tag 'mvebu-dt64-4.12-2' of git://git.infradead.org/linux-mvebu:
arm64: marvell: dts: enable the crypto engine on the Armada 8040 DB
arm64: marvell: dts: enable the crypto engine on the Armada 7040 DB
arm64: marvell: dts: add crypto engine description for 7k/8k
arm64: dts: marvell: add sdhci support for Armada 7K/8K
arm64: dts: marvell: add eMMC support for Armada 37xx
Signed-off-by: Olof Johansson <olof@lixom.net>
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Enable the cryptographic engine available in the CP110 master on the
Armada 8040 DB. Do not enable the one in the CP110 salve for now, as we
do not support multiple cryptographic engines yet.
Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
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Enable the cryptographic engine available in the CP110 master on the
Armada 7040 DB.
Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
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Add the description of the crypto engine hardware block for the Marvell
Armada 7k and Armada 8k processors; for both the CP110 slave and master.
Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
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Also enable it on the Armada 7040 DB and Armada 8040 DB boards.
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
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Add the eMMC support for Armada 37xx SoC and enable it in the Armada 3720
DB board.
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
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into next/dt64
ARM64: DT: Hisilicon SoC DT updates for 4.12
- Reset the hi6220 mmc hosts to avoid hang
- Add the binding for the hi3798cv200 SoC and the poplar board
- Add basic dts files to support the hi3798cv200 poplar board
- Enable the Mbigen, XGE, RoCE and SAS for the hip07 d05 board
- Add driver strength MACRO for the hi3660 SoC
- Add the pinctrl dtsi file for hikey960 board to configure the pins
* tag 'hisi-arm64-dt-for-4.12' of git://github.com/hisilicon/linux-hisi:
arm64: dts: hisi: add pinctrl dtsi file for HiKey960 development board
arm64: dts: hisi: add drive strength levels of the pins for Hi3660 SoC
arm64: dts: hisi: enable the NIC and SAS for the hip07-d05 board
arm64: dts: hisi: add SAS nodes for the hip07 SoC
arm64: dts: hisi: add RoCE nodes for the hip07 SoC
arm64: dts: hisi: add network related nodes for the hip07 SoC
arm64: dts: hisi: add mbigen nodes for the hip07 SoC
arm64: dts: hisilicon: add dts files for hi3798cv200-poplar board
dt-bindings: arm: hisilicon: add bindings for hi3798cv200 SoC and Poplar board
arm64: dts: hi6220: Reset the mmc hosts
Signed-off-by: Olof Johansson <olof@lixom.net>
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Add pinctrl dtsi file for HiKey960 development board, enable
5 pinmux devices and 1 pinconf device, also include some nodes
of configurations for pins.
Signed-off-by: Wang Xiaoyin <hw.wangxiaoyin@hisilicon.com>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
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Enable the NIC and SAS nodes for the hip07-d05 board
to support related functions.
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
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Add 3 SAS host controller nodes and the dependent subctrl node
to enable the SAS and SATA function for the hip07 SoC.
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
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Add the infiniband node to support the RoCE function
on the hip07 SoC.
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
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Add MDIO, SerDes, Port and realted HNS nodes to support the
network on the hip07 SoC.
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
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Add mbigen nodes for the hip07 SoC those will be used
for the SAS, XGE and PCIe host controllers.
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
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Add basic dts files for hi3798cv200-poplar board. Poplar is the
first development board compliant with the 96Boards Enterprise
Edition TV Platform specification. The board features the
Hi3798CV200 with an integrated quad-core 64-bit ARM Cortex A53
processor and high performance Mali T720 GPU.
Signed-off-by: Jiancheng Xue <xuejiancheng@hisilicon.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Acked-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
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