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Intel SPR platform uses fixed 16 bit energy unit for DRAM RAPL domain,
and fixed 0 bit energy unit for Psys RAPL domain.
After this, on SPR platform the energy counters appear in perf list.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Acked-by: Len Brown <len.brown@intel.com>
Link: https://lore.kernel.org/r/20200811153149.12242-4-rui.zhang@intel.com
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There will be more platforms with different fixed energy units.
Enhance the code to support different RAPL unit quirks for different
platforms.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Reviewed-by: Len Brown <len.brown@intel.com>
Link: https://lore.kernel.org/r/20200811153149.12242-3-rui.zhang@intel.com
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This fixes a problem introduced by commit:
5fb5273a905c ("perf/x86/rapl: Use new MSR detection interface")
that perf event sysfs attributes for psys RAPL domain are missing.
Fixes: 5fb5273a905c ("perf/x86/rapl: Use new MSR detection interface")
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Reviewed-by: Len Brown <len.brown@intel.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Link: https://lore.kernel.org/r/20200811153149.12242-2-rui.zhang@intel.com
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Pull documentation updates from Jonathan Corbet:
"It's been a busy cycle for documentation - hopefully the busiest for a
while to come. Changes include:
- Some new Chinese translations
- Progress on the battle against double words words and non-HTTPS
URLs
- Some block-mq documentation
- More RST conversions from Mauro. At this point, that task is
essentially complete, so we shouldn't see this kind of churn again
for a while. Unless we decide to switch to asciidoc or
something...:)
- Lots of typo fixes, warning fixes, and more"
* tag 'docs-5.9' of git://git.lwn.net/linux: (195 commits)
scripts/kernel-doc: optionally treat warnings as errors
docs: ia64: correct typo
mailmap: add entry for <alobakin@marvell.com>
doc/zh_CN: add cpu-load Chinese version
Documentation/admin-guide: tainted-kernels: fix spelling mistake
MAINTAINERS: adjust kprobes.rst entry to new location
devices.txt: document rfkill allocation
PCI: correct flag name
docs: filesystems: vfs: correct flag name
docs: filesystems: vfs: correct sync_mode flag names
docs: path-lookup: markup fixes for emphasis
docs: path-lookup: more markup fixes
docs: path-lookup: fix HTML entity mojibake
CREDITS: Replace HTTP links with HTTPS ones
docs: process: Add an example for creating a fixes tag
doc/zh_CN: add Chinese translation prefer section
doc/zh_CN: add clearing-warn-once Chinese version
doc/zh_CN: add admin-guide index
doc:it_IT: process: coding-style.rst: Correct __maybe_unused compiler label
futex: MAINTAINERS: Re-add selftests directory
...
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git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux
Pull printk updates from Petr Mladek:
- Herbert Xu made printk header file self-contained.
- Andy Shevchenko and Sergey Senozhatsky cleaned up console->setup()
error handling.
- Andy Shevchenko did some cleanups (e.g. sparse warning) in vsprintf
code.
- Minor documentation updates.
* tag 'printk-for-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux:
lib/vsprintf: Force type of flags value for gfp_t
lib/vsprintf: Replace custom spec to print decimals with generic one
lib/vsprintf: Replace hidden BUILD_BUG_ON() with static_assert()
printk: Make linux/printk.h self-contained
doc:kmsg: explicitly state the return value in case of SEEK_CUR
Replace HTTP links with HTTPS ones: vsprintf
hvc: unify console setup naming
console: Fix trivia typo 'change' -> 'chance'
console: Propagate error code from console ->setup()
tty: hvc: Return proper error code from console ->setup() hook
serial: sunzilog: Return proper error code from console ->setup() hook
serial: sunsab: Return proper error code from console ->setup() hook
mips: Return proper error code from console ->setup() hook
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git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc updates from Helge Deller:
"The majority of the patches are reverts of previous commits regarding
the parisc-specific low level spinlocking code and barrier handling,
with which we tried to fix CPU stalls on our build servers. In the end
John David Anglin found the culprit: We missed a define for
atomic64_set_release(). This seems to have fixed our issues, so now
it's good to remove the unnecessary code again.
Other than that it's trivial stuff: Spelling fixes, constifications
and such"
* 'parisc-5.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: make the log level string for register dumps const
parisc: Do not use an ordered store in pa_tlb_lock()
Revert "parisc: Revert "Release spinlocks using ordered store""
Revert "parisc: Use ldcw instruction for SMP spinlock release barrier"
Revert "parisc: Drop LDCW barrier in CAS code when running UP"
Revert "parisc: Improve interrupt handling in arch_spin_lock_flags()"
parisc: Replace HTTP links with HTTPS ones
parisc: elf.h: delete a duplicated word
parisc: Report bad pages as HardwareCorrupted
parisc: Convert to BIT_MASK() and BIT_WORD()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fsgsbase from Thomas Gleixner:
"Support for FSGSBASE. Almost 5 years after the first RFC to support
it, this has been brought into a shape which is maintainable and
actually works.
This final version was done by Sasha Levin who took it up after Intel
dropped the ball. Sasha discovered that the SGX (sic!) offerings out
there ship rogue kernel modules enabling FSGSBASE behind the kernels
back which opens an instantanious unpriviledged root hole.
The FSGSBASE instructions provide a considerable speedup of the
context switch path and enable user space to write GSBASE without
kernel interaction. This enablement requires careful handling of the
exception entries which go through the paranoid entry path as they
can no longer rely on the assumption that user GSBASE is positive (as
enforced via prctl() on non FSGSBASE enabled systemn).
All other entries (syscalls, interrupts and exceptions) can still just
utilize SWAPGS unconditionally when the entry comes from user space.
Converting these entries to use FSGSBASE has no benefit as SWAPGS is
only marginally slower than WRGSBASE and locating and retrieving the
kernel GSBASE value is not a free operation either. The real benefit
of RD/WRGSBASE is the avoidance of the MSR reads and writes.
The changes come with appropriate selftests and have held up in field
testing against the (sanitized) Graphene-SGX driver"
* tag 'x86-fsgsbase-2020-08-04' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits)
x86/fsgsbase: Fix Xen PV support
x86/ptrace: Fix 32-bit PTRACE_SETREGS vs fsbase and gsbase
selftests/x86/fsgsbase: Add a missing memory constraint
selftests/x86/fsgsbase: Fix a comment in the ptrace_write_gsbase test
selftests/x86: Add a syscall_arg_fault_64 test for negative GSBASE
selftests/x86/fsgsbase: Test ptracer-induced GS base write with FSGSBASE
selftests/x86/fsgsbase: Test GS selector on ptracer-induced GS base write
Documentation/x86/64: Add documentation for GS/FS addressing mode
x86/elf: Enumerate kernel FSGSBASE capability in AT_HWCAP2
x86/cpu: Enable FSGSBASE on 64bit by default and add a chicken bit
x86/entry/64: Handle FSGSBASE enabled paranoid entry/exit
x86/entry/64: Introduce the FIND_PERCPU_BASE macro
x86/entry/64: Switch CR3 before SWAPGS in paranoid entry
x86/speculation/swapgs: Check FSGSBASE in enabling SWAPGS mitigation
x86/process/64: Use FSGSBASE instructions on thread copy and ptrace
x86/process/64: Use FSBSBASE in switch_to() if available
x86/process/64: Make save_fsgs_for_kvm() ready for FSGSBASE
x86/fsgsbase/64: Enable FSGSBASE instructions in helper functions
x86/fsgsbase/64: Add intrinsics for FSGSBASE instructions
x86/cpu: Add 'unsafe_fsgsbase' to enable CR4.FSGSBASE
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 conversion to generic entry code from Thomas Gleixner:
"The conversion of X86 syscall, interrupt and exception entry/exit
handling to the generic code.
Pretty much a straight-forward 1:1 conversion plus the consolidation
of the KVM handling of pending work before entering guest mode"
* tag 'x86-entry-2020-08-04' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/kvm: Use __xfer_to_guest_mode_work_pending() in kvm_run_vcpu()
x86/kvm: Use generic xfer to guest work function
x86/entry: Cleanup idtentry_enter/exit
x86/entry: Use generic interrupt entry/exit code
x86/entry: Cleanup idtentry_entry/exit_user
x86/entry: Use generic syscall exit functionality
x86/entry: Use generic syscall entry function
x86/ptrace: Provide pt_regs helper for entry/exit
x86/entry: Move user return notifier out of loop
x86/entry: Consolidate 32/64 bit syscall entry
x86/entry: Consolidate check_user_regs()
x86: Correct noinstr qualifiers
x86/idtentry: Remove stale comment
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull generic kernel entry/exit code from Thomas Gleixner:
"Generic implementation of common syscall, interrupt and exception
entry/exit functionality based on the recent X86 effort to ensure
correctness of entry/exit vs RCU and instrumentation.
As this functionality and the required entry/exit sequences are not
architecture specific, sharing them allows other architectures to
benefit instead of copying the same code over and over again.
This branch was kept standalone to allow others to work on it. The
conversion of x86 comes in a seperate pull request which obviously is
based on this branch"
* tag 'core-entry-2020-08-04' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
entry: Correct __secure_computing() stub
entry: Correct 'noinstr' attributes
entry: Provide infrastructure for work before transitioning to guest mode
entry: Provide generic interrupt entry/exit code
entry: Provide generic syscall exit function
entry: Provide generic syscall entry functionality
seccomp: Provide stub for __secure_computing()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer updates from Thomas Gleixner:
"Time, timers and related driver updates:
- Prevent unnecessary timer softirq invocations by extending the
tracking of the next expiring timer in the timer wheel beyond the
existing NOHZ functionality.
The tracking overhead at enqueue time is within the noise, but on
sensitive workloads the avoidance of the soft interrupt invocation
is a measurable improvement.
- The obligatory new clocksource driver for Ingenic X100 OST
- The usual fixes, improvements, cleanups and extensions for newer
chip variants all over the driver space"
* tag 'timers-core-2020-08-04' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (28 commits)
timers: Recalculate next timer interrupt only when necessary
clocksource/drivers/ingenic: Add support for the Ingenic X1000 OST.
dt-bindings: timer: Add Ingenic X1000 OST bindings.
clocksource/drivers: Replace HTTP links with HTTPS ones
clocksource/drivers/nomadik-mtu: Handle 32kHz clock
clocksource/drivers/sh_cmt: Use "kHz" for kilohertz
clocksource/drivers/imx: Add support for i.MX TPM driver with ARM64
clocksource/drivers/ingenic: Add high resolution timer support for SMP/SMT.
timers: Lower base clock forwarding threshold
timers: Remove must_forward_clk
timers: Spare timer softirq until next expiry
timers: Expand clk forward logic beyond nohz
timers: Reuse next expiry cache after nohz exit
timers: Always keep track of next expiry
timers: Optimize _next_timer_interrupt() level iteration
timers: Add comments about calc_index() ceiling work
timers: Move trigger_dyntick_cpu() to enqueue_timer()
timers: Use only bucket expiry for base->next_expiry value
timers: Preserve higher bits of expiration on index calculation
clocksource/drivers/timer-atmel-tcb: Add sama5d2 support
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq updates from Thomas Gleixner:
"The usual boring updates from the interrupt subsystem:
- Infrastructure to allow building irqchip drivers as modules
- Consolidation of irqchip ACPI probing
- Removal of the EOI-preflow interrupt handler which was required for
SPARC support and became obsolete after SPARC was converted to use
sparse interrupts.
- Cleanups, fixes and improvements all over the place"
* tag 'irq-core-2020-08-04' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (51 commits)
irqchip/loongson-pch-pic: Fix the misused irq flow handler
irqchip/loongson-htvec: Support 8 groups of HT vectors
irqchip/loongson-liointc: Fix misuse of gc->mask_cache
dt-bindings: interrupt-controller: Update Loongson HTVEC description
irqchip/imx-intmux: Fix irqdata regs save in imx_intmux_runtime_suspend()
irqchip/imx-intmux: Implement intmux runtime power management
irqchip/gic-v4.1: Use GFP_ATOMIC flag in allocate_vpe_l1_table()
irqchip: Fix IRQCHIP_PLATFORM_DRIVER_* compilation by including module.h
irqchip/stm32-exti: Map direct event to irq parent
irqchip/mtk-cirq: Convert to a platform driver
irqchip/mtk-sysirq: Convert to a platform driver
irqchip/qcom-pdc: Switch to using IRQCHIP_PLATFORM_DRIVER helper macros
irqchip: Add IRQCHIP_PLATFORM_DRIVER_BEGIN/END and IRQCHIP_MATCH helper macros
irqchip: irq-bcm2836.h: drop a duplicated word
irqchip/gic-v4.1: Ensure accessing the correct RD when writing INVALLR
irqchip/irq-bcm7038-l1: Guard uses of cpu_logical_map
irqchip/gic-v3: Remove unused register definition
irqchip/qcom-pdc: Allow QCOM_PDC to be loadable as a permanent module
genirq: Export irq_chip_retrigger_hierarchy and irq_chip_set_vcpu_affinity_parent
irqdomain: Export irq_domain_update_bus_token
...
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Pull dma-mapping updates from Christoph Hellwig:
- make support for dma_ops optional
- move more code out of line
- add generic support for a dma_ops bypass mode
- misc cleanups
* tag 'dma-mapping-5.9' of git://git.infradead.org/users/hch/dma-mapping:
dma-contiguous: cleanup dma_alloc_contiguous
dma-debug: use named initializers for dir2name
powerpc: use the generic dma_ops_bypass mode
dma-mapping: add a dma_ops_bypass flag to struct device
dma-mapping: make support for dma ops optional
dma-mapping: inline the fast path dma-direct calls
dma-mapping: move the remaining DMA API calls out of line
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git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
Pull close_range() implementation from Christian Brauner:
"This adds the close_range() syscall. It allows to efficiently close a
range of file descriptors up to all file descriptors of a calling
task.
This is coordinated with the FreeBSD folks which have copied our
version of this syscall and in the meantime have already merged it in
April 2019:
https://reviews.freebsd.org/D21627
https://svnweb.freebsd.org/base?view=revision&revision=359836
The syscall originally came up in a discussion around the new mount
API and making new file descriptor types cloexec by default. During
this discussion, Al suggested the close_range() syscall.
First, it helps to close all file descriptors of an exec()ing task.
This can be done safely via (quoting Al's example from [1] verbatim):
/* that exec is sensitive */
unshare(CLONE_FILES);
/* we don't want anything past stderr here */
close_range(3, ~0U);
execve(....);
The code snippet above is one way of working around the problem that
file descriptors are not cloexec by default. This is aggravated by the
fact that we can't just switch them over without massively regressing
userspace. For a whole class of programs having an in-kernel method of
closing all file descriptors is very helpful (e.g. demons, service
managers, programming language standard libraries, container managers
etc.).
Second, it allows userspace to avoid implementing closing all file
descriptors by parsing through /proc/<pid>/fd/* and calling close() on
each file descriptor and other hacks. From looking at various
large(ish) userspace code bases this or similar patterns are very
common in service managers, container runtimes, and programming
language runtimes/standard libraries such as Python or Rust.
In addition, the syscall will also work for tasks that do not have
procfs mounted and on kernels that do not have procfs support compiled
in. In such situations the only way to make sure that all file
descriptors are closed is to call close() on each file descriptor up
to UINT_MAX or RLIMIT_NOFILE, OPEN_MAX trickery.
Based on Linus' suggestion close_range() also comes with a new flag
CLOSE_RANGE_UNSHARE to more elegantly handle file descriptor dropping
right before exec. This would usually be expressed in the sequence:
unshare(CLONE_FILES);
close_range(3, ~0U);
as pointed out by Linus it might be desirable to have this be a part
of close_range() itself under a new flag CLOSE_RANGE_UNSHARE which
gets especially handy when we're closing all file descriptors above a
certain threshold.
Test-suite as always included"
* tag 'close-range-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux:
tests: add CLOSE_RANGE_UNSHARE tests
close_range: add CLOSE_RANGE_UNSHARE
tests: add close_range() tests
arch: wire-up close_range()
open: add close_range()
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git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
Pull fork cleanups from Christian Brauner:
"This is cleanup series from when we reworked a chunk of the process
creation paths in the kernel and switched to struct
{kernel_}clone_args.
High-level this does two main things:
- Remove the double export of both do_fork() and _do_fork() where
do_fork() used the incosistent legacy clone calling convention.
Now we only export _do_fork() which is based on struct
kernel_clone_args.
- Remove the copy_thread_tls()/copy_thread() split making the
architecture specific HAVE_COYP_THREAD_TLS config option obsolete.
This switches all remaining architectures to select
HAVE_COPY_THREAD_TLS and thus to the copy_thread_tls() calling
convention. The current split makes the process creation codepaths
more convoluted than they need to be. Each architecture has their own
copy_thread() function unless it selects HAVE_COPY_THREAD_TLS then it
has a copy_thread_tls() function.
The split is not needed anymore nowadays, all architectures support
CLONE_SETTLS but quite a few of them never bothered to select
HAVE_COPY_THREAD_TLS and instead simply continued to use copy_thread()
and use the old calling convention. Removing this split cleans up the
process creation codepaths and paves the way for implementing clone3()
on such architectures since it requires the copy_thread_tls() calling
convention.
After having made each architectures support copy_thread_tls() this
series simply renames that function back to copy_thread(). It also
switches all architectures that call do_fork() directly over to
_do_fork() and the struct kernel_clone_args calling convention. This
is a corollary of switching the architectures that did not yet support
it over to copy_thread_tls() since do_fork() is conditional on not
supporting copy_thread_tls() (Mostly because it lacks a separate
argument for tls which is trivial to fix but there's no need for this
function to exist.).
The do_fork() removal is in itself already useful as it allows to to
remove the export of both do_fork() and _do_fork() we currently have
in favor of only _do_fork(). This has already been discussed back when
we added clone3(). The legacy clone() calling convention is - as is
probably well-known - somewhat odd:
#
# ABI hall of shame
#
config CLONE_BACKWARDS
config CLONE_BACKWARDS2
config CLONE_BACKWARDS3
that is aggravated by the fact that some architectures such as sparc
follow the CLONE_BACKWARDSx calling convention but don't really select
the corresponding config option since they call do_fork() directly.
So do_fork() enforces a somewhat arbitrary calling convention in the
first place that doesn't really help the individual architectures that
deviate from it. They can thus simply be switched to _do_fork()
enforcing a single calling convention. (I really hope that any new
architectures will __not__ try to implement their own calling
conventions...)
Most architectures already have made a similar switch (m68k comes to
mind).
Overall this removes more code than it adds even with a good portion
of added comments. It simplifies a chunk of arch specific assembly
either by moving the code into C or by simply rewriting the assembly.
Architectures that have been touched in non-trivial ways have all been
actually boot and stress tested: sparc and ia64 have been tested with
Debian 9 images. They are the two architectures which have been
touched the most. All non-trivial changes to architectures have seen
acks from the relevant maintainers. nios2 with a custom built
buildroot image. h8300 I couldn't get something bootable to test on
but the changes have been fairly automatic and I'm sure we'll hear
people yell if I broke something there.
All other architectures that have been touched in trivial ways have
been compile tested for each single patch of the series via git rebase
-x "make ..." v5.8-rc2. arm{64} and x86{_64} have been boot tested
even though they have just been trivially touched (removal of the
HAVE_COPY_THREAD_TLS macro from their Kconfig) because well they are
basically "core architectures" and since it is trivial to get your
hands on a useable image"
* tag 'fork-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux:
arch: rename copy_thread_tls() back to copy_thread()
arch: remove HAVE_COPY_THREAD_TLS
unicore: switch to copy_thread_tls()
sh: switch to copy_thread_tls()
nds32: switch to copy_thread_tls()
microblaze: switch to copy_thread_tls()
hexagon: switch to copy_thread_tls()
c6x: switch to copy_thread_tls()
alpha: switch to copy_thread_tls()
fork: remove do_fork()
h8300: select HAVE_COPY_THREAD_TLS, switch to kernel_clone_args
nios2: enable HAVE_COPY_THREAD_TLS, switch to kernel_clone_args
ia64: enable HAVE_COPY_THREAD_TLS, switch to kernel_clone_args
sparc: unconditionally enable HAVE_COPY_THREAD_TLS
sparc: share process creation helpers between sparc and sparc64
sparc64: enable HAVE_COPY_THREAD_TLS
fork: fold legacy_clone_args_valid() into _do_fork()
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git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
Pull thread updates from Christian Brauner:
"This contains the changes to add the missing support for attaching to
time namespaces via pidfds.
Last cycle setns() was changed to support attaching to multiple
namespaces atomically. This requires all namespaces to have a point of
no return where they can't fail anymore.
Specifically, <namespace-type>_install() is allowed to perform
permission checks and install the namespace into the new struct nsset
that it has been given but it is not allowed to make visible changes
to the affected task. Once <namespace-type>_install() returns,
anything that the given namespace type additionally requires to be
setup needs to ideally be done in a function that can't fail or if it
fails the failure must be non-fatal.
For time namespaces the relevant functions that fell into this
category were timens_set_vvar_page() and vdso_join_timens(). The
latter could still fail although it didn't need to. This function is
only implemented for vdso_join_timens() in current mainline. As
discussed on-list (cf. [1]), in order to make setns() support time
namespaces when attaching to multiple namespaces at once properly we
changed vdso_join_timens() to always succeed. So vdso_join_timens()
replaces the mmap_write_lock_killable() with mmap_read_lock().
Please note that arm is about to grow vdso support for time namespaces
(possibly this merge window). We've synced on this change and arm64
also uses mmap_read_lock(), i.e. makes vdso_join_timens() a function
that can't fail. Once the changes here and the arm64 changes have
landed, vdso_join_timens() should be turned into a void function so
it's obvious to callers and implementers on other architectures that
the expectation is that it can't fail.
We didn't do this right away because it would've introduced
unnecessary merge conflicts between the two trees for no major gain.
As always, tests included"
[1]: https://lore.kernel.org/lkml/20200611110221.pgd3r5qkjrjmfqa2@wittgenstein
* tag 'threads-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux:
tests: add CLONE_NEWTIME setns tests
nsproxy: support CLONE_NEWTIME with setns()
timens: add timens_commit() helper
timens: make vdso_join_timens() always succeed
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git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull execve updates from Eric Biederman:
"During the development of v5.7 I ran into bugs and quality of
implementation issues related to exec that could not be easily fixed
because of the way exec is implemented. So I have been diggin into
exec and cleaning up what I can.
This cycle I have been looking at different ideas and different
implementations to see what is possible to improve exec, and cleaning
the way exec interfaces with in kernel users. Only cleaning up the
interfaces of exec with rest of the kernel has managed to stabalize
and make it through review in time for v5.9-rc1 resulting in 2 sets of
changes this cycle.
- Implement kernel_execve
- Make the user mode driver code a better citizen
With kernel_execve the code size got a little larger as the copying of
parameters from userspace and copying of parameters from userspace is
now separate. The good news is kernel threads no longer need to play
games with set_fs to use exec. Which when combined with the rest of
Christophs set_fs changes should security bugs with set_fs much more
difficult"
* 'exec-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace: (23 commits)
exec: Implement kernel_execve
exec: Factor bprm_stack_limits out of prepare_arg_pages
exec: Factor bprm_execve out of do_execve_common
exec: Move bprm_mm_init into alloc_bprm
exec: Move initialization of bprm->filename into alloc_bprm
exec: Factor out alloc_bprm
exec: Remove unnecessary spaces from binfmts.h
umd: Stop using split_argv
umd: Remove exit_umh
bpfilter: Take advantage of the facilities of struct pid
exit: Factor thread_group_exited out of pidfd_poll
umd: Track user space drivers with struct pid
bpfilter: Move bpfilter_umh back into init data
exec: Remove do_execve_file
umh: Stop calling do_execve_file
umd: Transform fork_usermode_blob into fork_usermode_driver
umd: Rename umd_info.cmdline umd_info.driver_name
umd: For clarity rename umh_info umd_info
umh: Separate the user mode driver and the user mode helper support
umh: Remove call_usermodehelper_setup_file.
...
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git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull seccomp updates from Kees Cook:
"There are a bunch of clean ups and selftest improvements along with
two major updates to the SECCOMP_RET_USER_NOTIF filter return:
EPOLLHUP support to more easily detect the death of a monitored
process, and being able to inject fds when intercepting syscalls that
expect an fd-opening side-effect (needed by both container folks and
Chrome). The latter continued the refactoring of __scm_install_fd()
started by Christoph, and in the process found and fixed a handful of
bugs in various callers.
- Improved selftest coverage, timeouts, and reporting
- Add EPOLLHUP support for SECCOMP_RET_USER_NOTIF (Christian Brauner)
- Refactor __scm_install_fd() into __receive_fd() and fix buggy
callers
- Introduce 'addfd' command for SECCOMP_RET_USER_NOTIF (Sargun
Dhillon)"
* tag 'seccomp-v5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (30 commits)
selftests/seccomp: Test SECCOMP_IOCTL_NOTIF_ADDFD
seccomp: Introduce addfd ioctl to seccomp user notifier
fs: Expand __receive_fd() to accept existing fd
pidfd: Replace open-coded receive_fd()
fs: Add receive_fd() wrapper for __receive_fd()
fs: Move __scm_install_fd() to __receive_fd()
net/scm: Regularize compat handling of scm_detach_fds()
pidfd: Add missing sock updates for pidfd_getfd()
net/compat: Add missing sock updates for SCM_RIGHTS
selftests/seccomp: Check ENOSYS under tracing
selftests/seccomp: Refactor to use fixture variants
selftests/harness: Clean up kern-doc for fixtures
seccomp: Use -1 marker for end of mode 1 syscall list
seccomp: Fix ioctl number for SECCOMP_IOCTL_NOTIF_ID_VALID
selftests/seccomp: Rename user_trap_syscall() to user_notif_syscall()
selftests/seccomp: Make kcmp() less required
seccomp: Use pr_fmt
selftests/seccomp: Improve calibration loop
selftests/seccomp: use 90s as timeout
selftests/seccomp: Expand benchmark to per-filter measurements
...
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git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull uninitialized_var() macro removal from Kees Cook:
"This is long overdue, and has hidden too many bugs over the years. The
series has several "by hand" fixes, and then a trivial treewide
replacement.
- Clean up non-trivial uses of uninitialized_var()
- Update documentation and checkpatch for uninitialized_var() removal
- Treewide removal of uninitialized_var()"
* tag 'uninit-macro-v5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
compiler: Remove uninitialized_var() macro
treewide: Remove uninitialized_var() usage
checkpatch: Remove awareness of uninitialized_var() macro
mm/debug_vm_pgtable: Remove uninitialized_var() usage
f2fs: Eliminate usage of uninitialized_var() macro
media: sur40: Remove uninitialized_var() usage
KVM: PPC: Book3S PR: Remove uninitialized_var() usage
clk: spear: Remove uninitialized_var() usage
clk: st: Remove uninitialized_var() usage
spi: davinci: Remove uninitialized_var() usage
ide: Remove uninitialized_var() usage
rtlwifi: rtl8192cu: Remove uninitialized_var() usage
b43: Remove uninitialized_var() usage
drbd: Remove uninitialized_var() usage
x86/mm/numa: Remove uninitialized_var() usage
docs: deprecated.rst: Add uninitialized_var()
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git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull gcc plugin updates from Kees Cook:
"Primarily improvements to STACKLEAK from Alexander Popov, along with
some additional cleanups.
- Update URLs for HTTPS scheme where available (Alexander A. Klimov)
- Improve STACKLEAK code generation on x86 (Alexander Popov)"
* tag 'gcc-plugins-v5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
gcc-plugins: Replace HTTP links with HTTPS ones
gcc-plugins/stackleak: Add 'verbose' plugin parameter
gcc-plugins/stackleak: Use asm instrumentation to avoid useless register saving
ARM: vdso: Don't use gcc plugins for building vgettimeofday.c
gcc-plugins/stackleak: Don't instrument itself
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Signed-off-by: Rolf Eike Beer <eike-kernel@sf-tec.de>
Signed-off-by: Helge Deller <deller@gmx.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"The most significant change here is the extension of the Energy Model
to cover non-CPU devices (as well as CPUs) from Lukasz Luba.
There is also some new hardware support (Ice Lake server idle states
table for intel_idle, Sapphire Rapids and Power Limit 4 support in the
RAPL driver), some new functionality in the existing drivers (eg. a
new switch to disable/enable CPU energy-efficiency optimizations in
intel_pstate, delayed timers in devfreq), some assorted fixes (cpufreq
core, intel_pstate, intel_idle) and cleanups (eg. cpuidle-psci,
devfreq), including the elimination of W=1 build warnings from cpufreq
done by Lee Jones.
Specifics:
- Make the Energy Model cover non-CPU devices (Lukasz Luba).
- Add Ice Lake server idle states table to the intel_idle driver and
eliminate a redundant static variable from it (Chen Yu, Rafael
Wysocki).
- Eliminate all W=1 build warnings from cpufreq (Lee Jones).
- Add support for Sapphire Rapids and for Power Limit 4 to the Intel
RAPL power capping driver (Sumeet Pawnikar, Zhang Rui).
- Fix function name in kerneldoc comments in the idle_inject power
capping driver (Yangtao Li).
- Fix locking issues with cpufreq governors and drop a redundant
"weak" function definition from cpufreq (Viresh Kumar).
- Rearrange cpufreq to register non-modular governors at the
core_initcall level and allow the default cpufreq governor to be
specified in the kernel command line (Quentin Perret).
- Extend, fix and clean up the intel_pstate driver (Srinivas
Pandruvada, Rafael Wysocki):
* Add a new sysfs attribute for disabling/enabling CPU
energy-efficiency optimizations in the processor.
* Make the driver avoid enabling HWP if EPP is not supported.
* Allow the driver to handle numeric EPP values in the sysfs
interface and fix the setting of EPP via sysfs in the active
mode.
* Eliminate a static checker warning and clean up a kerneldoc
comment.
- Clean up some variable declarations in the powernv cpufreq driver
(Wei Yongjun).
- Fix up the ->enter_s2idle callback definition to cover the case
when it points to the same function as ->idle correctly (Neal Liu).
- Rearrange and clean up the PSCI cpuidle driver (Ulf Hansson).
- Make the PM core emit "changed" uevent when adding/removing the
"wakeup" sysfs attribute of devices (Abhishek Pandit-Subedi).
- Add a helper macro for declaring PM callbacks and use it in the MMC
jz4740 driver (Paul Cercueil).
- Fix white space in some places in the hibernate code and make the
system-wide PM code use "const char *" where appropriate (Xiang
Chen, Alexey Dobriyan).
- Add one more "unsafe" helper macro to the freezer to cover the NFS
use case (He Zhe).
- Change the language in the generic PM domains framework to use
parent/child terminology and clean up a typo and some comment
fromatting in that code (Kees Cook, Geert Uytterhoeven).
- Update the operating performance points OPP framework (Lukasz Luba,
Andrew-sh.Cheng, Valdis Kletnieks):
* Refactor dev_pm_opp_of_register_em() and update related drivers.
* Add a missing function export.
* Allow disabled OPPs in dev_pm_opp_get_freq().
- Update devfreq core and drivers (Chanwoo Choi, Lukasz Luba, Enric
Balletbo i Serra, Dmitry Osipenko, Kieran Bingham, Marc Zyngier):
* Add support for delayed timers to the devfreq core and make the
Samsung exynos5422-dmc driver use it.
* Unify sysfs interface to use "df-" as a prefix in instance
names consistently.
* Fix devfreq_summary debugfs node indentation.
* Add the rockchip,pmu phandle to the rk3399_dmc driver DT
bindings.
* List Dmitry Osipenko as the Tegra devfreq driver maintainer.
* Fix typos in the core devfreq code.
- Update the pm-graph utility to version 5.7 including a number of
fixes related to suspend-to-idle (Todd Brandt).
- Fix coccicheck errors and warnings in the cpupower utility (Shuah
Khan).
- Replace HTTP links with HTTPs ones in multiple places (Alexander A.
Klimov)"
* tag 'pm-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (71 commits)
cpuidle: ACPI: fix 'return' with no value build warning
cpufreq: intel_pstate: Fix EPP setting via sysfs in active mode
cpufreq: intel_pstate: Rearrange the storing of new EPP values
intel_idle: Customize IceLake server support
PM / devfreq: Fix the wrong end with semicolon
PM / devfreq: Fix indentaion of devfreq_summary debugfs node
PM / devfreq: Clean up the devfreq instance name in sysfs attr
memory: samsung: exynos5422-dmc: Add module param to control IRQ mode
memory: samsung: exynos5422-dmc: Adjust polling interval and uptreshold
memory: samsung: exynos5422-dmc: Use delayed timer as default
PM / devfreq: Add support delayed timer for polling mode
dt-bindings: devfreq: rk3399_dmc: Add rockchip,pmu phandle
PM / devfreq: tegra: Add Dmitry as a maintainer
PM / devfreq: event: Fix trivial spelling
PM / devfreq: rk3399_dmc: Fix kernel oops when rockchip,pmu is absent
cpuidle: change enter_s2idle() prototype
cpuidle: psci: Prevent domain idlestates until consumers are ready
cpuidle: psci: Convert PM domain to platform driver
cpuidle: psci: Fix error path via converting to a platform driver
cpuidle: psci: Fail cpuidle registration if set OSI mode failed
...
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi updates from Mark Brown:
"A fairly quiet release for SPI, nothing really going on in the core
although there's been quite a bit of driver related activity.
This includes the addition of some shared code in drivers/memory for
the Renesas RPC-IF which is used by a newly added SPI driver, the
memory subsystem doesn't seem to have a fixed maintainer at the minute
and this seemed like the most sensible way to get that hardware
supported.
- Quite a few cleanups and optimizations for the Altera, Qualcomm
GENI, sun6i and lantiq drivers.
- Several more GPIO descriptor conversions.
- Move the Cadence QuadSPI driver from drivers/mtd to drivers/spi.
- New support for Mediatek MT8192 and Renesas RPC-IF, R8A7742 and
R8A774e1"
* tag 'spi-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (119 commits)
dt-bindings: lpspi: New property in document DT bindings for LPSPI
spi: lpspi: fix using CS discontinuously on i.MX8DXLEVK
spi: lpspi: remove unused fsl_lpspi->chipselect
spi: lpspi: Fix kernel warning dump when probe fail after calling spi_register
spi: rockchip: Fix error in SPI slave pio read
spi: rockchip: Support 64-location deep FIFOs
spi: rockchip: Config spi rx dma burst size depend on xfer length
spi: spi-topcliff-pch: drop call to wakeup-disable
spi: spidev: Align buffers for DMA
spi: correct kernel-doc inconsistency
spi: sun4i: update max transfer size reported
spi: imx: enable runtime pm support
spi: update bindings for MT8192 SoC
spi: mediatek: add spi support for mt8192 IC
spi: Add bindings for Lightning Mountain SoC
spi: lantiq: Add support to Lightning Mountain SoC
spi: lantiq: Move interrupt configuration to SoC specific data structure
spi: lantiq: Add fifo size bit mask in SoC specific data structure
spi: lantiq: Add support to acknowledge interrupt
spi: lantiq: Move interrupt control register offesets to SoC specific data structure
...
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git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull new ARM SoC support from Arnd Bergmann:
"There are three SoC families newly dded to the 32-bit and 64-bit Arm
architecture code in the kernel this time:
- Daniel Palmer adds initial support for two chips made by MStar, a
taiwanese SoC manufacturer that became part of Mediatek in 2012.
For now, the added support is fairly minimal, with just two of its
Cortex-A7 based 32-bit camera chips getting support for a limited
set of on-chip peripherals.
- Lars Povlsen from Microchip adds support for their new Sparx5
family of ethernet switch chips using 64-bit Cortex-A53 cores.
These are descended from earlier VSC7xxx SparX and Ocelot chips
using 32-bit MIPS cores.
- Daniele Alessandrelli from Intel adds support for the new Keem Bay
SoC for computer vision, built around a Movidius VPU with Linux
running on Arm Cortex-A53 cores"
* tag 'arm-newsoc-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (38 commits)
ARM: mstar: Correct the compatible string for pmsleep
dt-bindings: arm: mstar: remove the binding description for mstar,pmsleep
dt-bindings: mfd: syscon: add compatible string for mstar,msc313-pmsleep
ARM: mstar: Add reboot support
ARM: mstar: Add "pmsleep" node to base dtsi
ARM: mstar: Add PMU
ARM: mstar: Adjust IMI size for infinity3
ARM: mstar: Adjust IMI size for mercury5
ARM: mstar: Adjust IMI size of infinity
ARM: mstar: Add IMI SRAM region
dt-bindings: arm: mstar: Move existing MStar binding descriptions
dt-bindings: arm: mstar: Add binding details for mstar, pmsleep
ARM: mstar: Fix dts filename for 70mai midrive d08
ARM: mstar: Add dts for 70mai midrive d08
ARM: mstar: Add dts for msc313(e) based BreadBee boards
ARM: mstar: Add mercury5 series dtsis
ARM: mstar: Add infinity/infinity3 family dtsis
ARM: mstar: Add Armv7 base dtsi
ARM: mstar: Add binding details for mstar,l3bridge
ARM: mstar: Add machine for MStar/Sigmastar Armv7 SoCs
...
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git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC driver updates from Arnd Bergmann:
"A couple of subsystems have their own subsystem maintainers but choose
to have the code merged through the soc tree as upstream, as the code
tends to be used across multiple SoCs or has SoC specific drivers
itself:
- memory controllers:
Krzysztof Kozlowski takes ownership of the drivers/memory subsystem
and its drivers, starting out with a set of cleanup patches.
A larger driver for the Tegra memory controller that was
accidentally missed for v5.8 is now added.
- reset controllers:
Only minor updates to drivers/reset this time
- firmware:
The "turris mox" firmware driver gains support for signed firmware
blobs The tegra firmware driver gets extended to export some debug
information Various updates to i.MX firmware drivers, mostly
cosmetic
- ARM SCMI/SCPI:
A new mechanism for platform notifications is added, among a number
of minor changes.
- optee:
Probing of the TEE bus is rewritten to better support detection of
devices that depend on the tee-supplicant user space. A new
firmware based trusted platform module (fTPM) driver is added based
on OP-TEE
- SoC attributes:
A new driver is added to provide a generic soc_device for
identifying a machine through the SMCCC ARCH_SOC_ID firmware
interface rather than by probing SoC family specific registers.
The series also contains some cleanups to the common soc_device
code.
There are also a number of updates to SoC specific drivers, the main
ones are:
- Mediatek cmdq driver gains a few in-kernel interfaces
- Minor updates to Qualcomm RPMh, socinfo, rpm drivers, mostly adding
support for additional SoC variants
- The Qualcomm GENI core code gains interconnect path voting and
performance level support, and integrating this into a number of
device drivers.
- A new driver for Samsung Exynos5800 voltage coupler for
- Renesas RZ/G2H (R8A774E1) SoC support gets added to a couple of SoC
specific device drivers
- Updates to the TI K3 Ring Accelerator driver"
* tag 'arm-drivers-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (164 commits)
soc: qcom: geni: Fix unused label warning
soc: qcom: smd-rpm: Fix kerneldoc
memory: jz4780_nemc: Only request IO memory the driver will use
soc: qcom: pdr: Reorder the PD state indication ack
MAINTAINERS: Add Git repository for memory controller drivers
memory: brcmstb_dpfe: Fix language typo
memory: samsung: exynos5422-dmc: Correct white space issues
memory: samsung: exynos-srom: Correct alignment
memory: pl172: Enclose macro argument usage in parenthesis
memory: of: Correct kerneldoc
memory: omap-gpmc: Fix language typo
memory: omap-gpmc: Correct white space issues
memory: omap-gpmc: Use 'unsigned int' for consistency
memory: omap-gpmc: Enclose macro argument usage in parenthesis
memory: omap-gpmc: Correct kerneldoc
memory: mvebu-devbus: Align with open parenthesis
memory: mvebu-devbus: Add missing braces to all arms of if statement
memory: bt1-l2-ctl: Add blank lines after declarations
soc: TI knav_qmss: make symbol 'knav_acc_range_ops' static
firmware: ti_sci: Replace HTTP links with HTTPS ones
...
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Pull ARM SoC updates from Arnd Bergmann:
"These are mostly cosmetic changes and minor bugfixes for the SoC
specific code, across the 32-bit at91, mvebu, davinci, samsung, and
omap platforms.
The main notable changes are for the Samsung Exynos platform, which
sees a rewrite of gpio handling and a change to restore and adds a
workaround for a problem with cpuidle support"
* tag 'arm-soc-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
ARM: socfpga: PM: add missing put_device() call in socfpga_setup_ocram_self_refresh()
MAINTAINERS: arm/amlogic: add designated reviewers
ARM: davinci: dm646x-evm: Simplify error handling in 'evm_sw_setup()'
ARM: davinci: Fix trivial spelling
ARM: davinci: Replace HTTP links with HTTPS ones
ARM: s3c24xx: Replace HTTP links with HTTPS ones
ARM: orion/gpio: Make use of for_each_requested_gpio()
ARM: at91: Replace HTTP links with HTTPS ones
ARM: at91: pm: add missing put_device() call in at91_pm_sram_init()
ARM: rpc: Change blacklist to quirklist in ecode.c file
ARM: OMAP: Replace HTTP links with HTTPS ones
ARM: s3c24xx: leds: Convert to use GPIO descriptors
udc: lpc32xx: mark local function static
ARM: exynos: MCPM: Restore big.LITTLE cpuidle support
ARM: exynos: clear L310_AUX_CTRL_FULL_LINE_ZERO in default l2c_aux_val
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Pull ARM SoC DT updates from Arnd Bergmann:
"As usual, there are many patches addressing minor issues in existing
DTS files, such as DTC warnings, or adding support for additional
peripherals.
There are three added SoCs in existing product families:
- Amazon:
Alpine v3 is a 16-core Cortex-A72 SoC from Amazon's Annapurna Labs,
otherwise known as AL73400 or first-generation Graviton, and
following the already supported Cortex-A1`5 and Cortex-A57 based
Alpine chips. This one is added together with the official
Evaluation platform.
- Qualcomm:
The Snapdragon SDM630 platform is a family of mid-range mobile
phone chips from 2017 based on Cortex-A53 or Kryo 260 CPUs. A total
of five end-user products are added based on these, all Android
phones from Sony: Xperia 10, 10 Plus, XA2, XA2 Plus and XA2 Ultra.
- Renesas:
RZ/G2H (r8a774e1) is currently the top model in the Renesas RZ/G
family, and apparently closely related to the RZ/G2N and RZ/G2M
models we already support but has a faster GPU and additional
on-chip peripherals. It is added along with the HopeRun HiHope
RZ/G2H development board
A small number of new boards for already supported SoCs also debut:
- Allwinner sunxi:
Only one new machine, revision v1.2 of the Pine64 PinePhone
(non-Android) smartphone, containing minor changes compared to
earlier versions.
- Amlogic Meson:
WeTek Core2 is an Amlogic S912 (GXM) based Set-top-box
- Aspeed:
EthanolX is AMD's EPYC data center rerence platform, using an
ASpeed AST2600 baseboard management controller.
- Mediatek:
Lenovo IdeaPad Duet 10.1" (kukui/krane) is a new Chromebook based
on the MT8183 (Helio P60t) SoC.
- Nvidia Tegra:
ASUS Google Nexus 7 and Acer Iconia Tab A500 are two Android
tablets from around 2012 using Tegra 3 and Tegra 2, respectively.
Thanks to PostmarketOS, these can now run mainline kernels and
become useful again.
The Jetson Xavier NX Developer Kit uses a SoM and carrier board for
the Tegra194, their latest 64-bit chip based on Carmel CPU cores
and Volta graphics.
- NXP i.MX:
Five new boards based on the 32-bit i.MX6 series are added: The
MYiR MYS-6ULX single-board computer, and four different models of
industrial computers from Protonic.
- Qualcomm:
MikroTik RouterBoard 3011 is a rackmounted router based on the
32-bit IPQ8064 networking SoC
Three older phones get added, the Snapdragon 808 (msm8992) based
Xiaomi Libra (Mi 4C) and Microsoft Lumia 950, originally running
Windows Phone, and the Snapdragon 810 (msm8994) based Sony Xperia
Z5.
- Renesas:
In addition to the HiHope RZ/G2H board mentioned above, we gain
support for board versions 3.0 and 4.0 of the earlier RZ/G2M and
RZ/G2N reference boards. Beacon EmbeddedWorks adds another
SoM+Carrier development board for RZ/G2M.
- Rockchips:
Radxa Rock Pi N8 development board and the VMARC RK3288 SoM it is
based on, using the high-end 32-bit rk3288 SoC.
Notable updates to existing platforms are usually for added on-chip
peripherals, including:
- ASpeed AST2xxx (various)
- Allwinner (cpufreq, thermal, Pinephone touchscreen)
- Amlogic Meson (audio, gpu dvdfs, board updates)
- Arm Versatile
- Broadcom (board updates for switch ports, Raspberry pi clock updates)
- Hisilicon (various)
- Intel/Altera SoCFPGA (various)
- Marvell Armada 7xxx/8xxx (smmu)
- Marvell MMP (GPU on mmp2/mmp3)
- Mediatek mt8183 (USB, pericfg)
- NXP Layerscape (VPU, thermal, DSPI)
- NXP i.MX (VPU, bindings, board updates)
- Nvidia Tegra194 (GPU)
- Qualcomm (GPU, Interconnect, ...)
- Renesas R-Car (SPI, IPMMU, board updates)
- STMicroelectronics STM32 (various)
- Samsung Exynos (various)
- Socionext Uniphier (updates to serial, and pcie)
- TI K3 (serdes, usb3, audio, sd, chipid)
- TI OMAP (IPU/DSP remoteproc changes, dropping platform data)"
* tag 'arm-dt-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (605 commits)
arm64: dts: meson: odroid-n2: add jack audio output support
arm64: dts: meson: odroid-n2: enable audio loopback
ARM: dts: berlin: Align L2 cache-controller nodename with dtschema
arm64: dts: qcom: Add Microsoft Lumia 950 (Talkman) device tree
arm64: dts: qcom: Add Xiaomi Libra (Mi 4C) device tree
arm64: dts: qcom: msm8992: Add RPMCC node
arm64: dts: qcom: msm8992: Add PSCI support.
arm64: dts: qcom: msm8992: Add PMU node
arm64: dts: qcom: msm8992: Add BLSP2_UART2 and I2C nodes
arm64: dts: qcom: msm8992: Add SPMI PMIC arbiter device
arm64: dts: qcom: msm8992: Add a SCM node
arm64: dts: qcom: msm8992: Add a proper CPU map
arm64: dts: qcom: bullhead: Move UART pinctrl to SoC
arm64: dts: qcom: bullhead: Add qcom,msm-id
arm64: dts: qcom: msm8992: Fix SDHCI1
arm64: dts: qcom: msm8992: Modernize the DTS style
arm64: dts: qcom: Add support for Sony Xperia Z5 (SoMC Sumire-RoW)
arm64: dts: qcom: Move msm8994-smd-rpm contents to lg-bullhead.
arm64: dts: qcom: msm8994: Add support for SMD RPM
arm64: dts: qcom: msm8992: Add a label to rpm-requests
...
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git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM defconfig updates from Arnd Bergmann:
"These are the usual updates to arm/arm64 defconfig files, enabling
newly added drivers and addressing changes to Kconfig files"
* tag 'arm-defconfig-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (38 commits)
ARM: configs: at91: sama5: enable CAN PLATFORM driver
ARM: configs: at91: sama5: enable bridge and VLAN filtering
ARM: configs: at91: sama5: add support for KSZ ethernet switches
arm64: defconfig: Enable AM654x SDHCI controller
arm64: arch_k3: enable chipid driver
arm/arm64: defconfig: Update configs to use the new CROS_EC options
ARM: tegra_defconfig: Enable options useful for Nexus 7 and Acer A500
ARM: tegra: Enable CPUFREQ userspace governor
arm64: defconfig: enable CONFIG_FSL_ENETC_QOS
arm64: defconfig: enable TSN features for ENETC and similiar hardware
ARM: imx_v6_v7_defconfig: Support i.MX8MM
arm64: defconfig: enable RTC and audio support on Kontron sl28 boards
arm64: defconfig: add pca9450 pmic driver
ARM: configs: sunxi: Enable crypto related options
ARM: sunxi: configs: Enable the Mailbox driver
ARM: configs: sunxi: Enable the PS/2 controller
ARM: configs: sunxi: Enable Lima
ARM: configs: sunxi: Add DRM output-related options
ARM: configs: sunxi: Enable ASoC options
ARM: configs: sunxi: Enable Cedrus
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 RAS updates from Ingo Molnar:
"Boris is on vacation and he asked us to send you the pending RAS bits:
- Print the PPIN field on CPUs that fill them out
- Fix an MCE injection bug
- Simplify a kzalloc in dev_mcelog_init_device()"
* tag 'ras-core-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mce, EDAC/mce_amd: Print PPIN in machine check records
x86/mce/dev-mcelog: Use struct_size() helper in kzalloc()
x86/mce/inject: Fix a wrong assignment of i_mce.status
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|
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 timer update from Ingo Molnar:
"Set the X86_FEATURE_TSC_KNOWN_FREQ flag for Xen guests, to avoid
recalibration"
* tag 'x86-timers-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/xen/time: Set the X86_FEATURE_TSC_KNOWN_FREQ flag in xen_tsc_khz()
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|
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 platform updates from Ingo Molnar:
"The biggest change is the removal of SGI UV1 support, which allowed
the removal of the legacy EFI old_mmap code as well.
This removes quite a bunch of old code & quirks"
* tag 'x86-platform-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/efi: Remove unused EFI_UV1_MEMMAP code
x86/platform/uv: Remove uv bios and efi code related to EFI_UV1_MEMMAP
x86/efi: Remove references to no-longer-used efi_have_uv1_memmap()
x86/efi: Delete SGI UV1 detection.
x86/platform/uv: Remove efi=old_map command line option
x86/platform/uv: Remove vestigial mention of UV1 platform from bios header
x86/platform/uv: Remove support for UV1 platform from uv
x86/platform/uv: Remove support for uv1 platform from uv_hub
x86/platform/uv: Remove support for UV1 platform from uv_bau
x86/platform/uv: Remove support for UV1 platform from uv_mmrs
x86/platform/uv: Remove support for UV1 platform from x2apic_uv_x
x86/platform/uv: Remove support for UV1 platform from uv_tlb
x86/platform/uv: Remove support for UV1 platform from uv_time
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|
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 mmm update from Ingo Molnar:
"The biggest change is to not sync the vmalloc and ioremap ranges for
x86-64 anymore"
* tag 'x86-mm-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mm/64: Make sync_global_pgds() static
x86/mm/64: Do not sync vmalloc/ioremap mappings
x86/mm: Pre-allocate P4D/PUD pages for vmalloc area
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 MSR filtering from Ingo Molnar:
"Filter MSR writes from user-space by default, and print a syslog entry
if they happen outside the allowed set of MSRs, which is a single one
for now, MSR_IA32_ENERGY_PERF_BIAS.
The plan is to eventually disable MSR writes by default (they can
still be enabled via allow_writes=on)"
* tag 'x86-misc-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/msr: Filter MSR writes
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|
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 microcode update from Ingo Molnar:
"Remove the microcode loader's FW_LOADER coupling"
* tag 'x86-microcode-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/microcode: Do not select FW_LOADER
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|
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cpu updates from Ingo Molar:
- prepare for Intel's new SERIALIZE instruction
- enable split-lock debugging on more CPUs
- add more Intel CPU models
- optimize stack canary initialization a bit
- simplify the Spectre logic a bit
* tag 'x86-cpu-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/cpu: Refactor sync_core() for readability
x86/cpu: Relocate sync_core() to sync_core.h
x86/cpufeatures: Add enumeration for SERIALIZE instruction
x86/split_lock: Enable the split lock feature on Sapphire Rapids and Alder Lake CPUs
x86/cpu: Add Lakefield, Alder Lake and Rocket Lake models to the to Intel CPU family
x86/stackprotector: Pre-initialize canary for secondary CPUs
x86/speculation: Merge one test in spectre_v2_user_select_mitigation()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 debug fixlets from Ingo Molnar:
"Improve x86 debuggability: print registers with the same log level as
the backtrace"
* tag 'x86-core-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/dumpstack: Show registers dump with trace's log level
x86/dumpstack: Add log_lvl to __show_regs()
x86/dumpstack: Add log_lvl to show_iret_regs()
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|
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cleanups from Ingo Molnar:
"Misc cleanups all around the place"
* tag 'x86-cleanups-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/ioperm: Initialize pointer bitmap with NULL rather than 0
x86: uv: uv_hub.h: Delete duplicated word
x86: cmpxchg_32.h: Delete duplicated word
x86: bootparam.h: Delete duplicated word
x86/mm: Remove the unused mk_kernel_pgd() #define
x86/tsc: Remove unused "US_SCALE" and "NS_SCALE" leftover macros
x86/ioapic: Remove unused "IOAPIC_AUTO" define
x86/mm: Drop unused MAX_PHYSADDR_BITS
x86/msr: Move the F15h MSRs where they belong
x86/idt: Make idt_descr static
initrd: Remove erroneous comment
x86/mm/32: Fix -Wmissing prototypes warnings for init.c
cpu/speculation: Add prototype for cpu_show_srbds()
x86/mm: Fix -Wmissing-prototypes warnings for arch/x86/mm/init.c
x86/asm: Unify __ASSEMBLY__ blocks
x86/cpufeatures: Mark two free bits in word 3
x86/msr: Lift AMD family 0x15 power-specific MSRs
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|
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 build updates from Ingo Molnar:
"Misc changes: refresh defconfigs and simplify the boot image link
stage"
* tag 'x86-build-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/defconfigs: Refresh defconfig files
x86/build: Move max-page-size option to LDFLAGS_vmlinux
x86/defconfigs: Remove CONFIG_CRYPTO_AES_586 from i386_defconfig
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|
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 boot updates from Ingo Molnar:
"The main change in this cycle was to add support for ZSTD-compressed
kernel and initrd images.
ZSTD has a very fast decompressor, yet it compresses better than gzip"
* tag 'x86-boot-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
Documentation: dontdiff: Add zstd compressed files
.gitignore: Add ZSTD-compressed files
x86: Add support for ZSTD compressed kernel
x86: Bump ZO_z_extra_bytes margin for zstd
usr: Add support for zstd compressed initramfs
init: Add support for zstd compressed kernel
lib: Add zstd support to decompress
lib: Prepare zstd for preboot environment, improve performance
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|
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 asm updates from Ingo Molnar:
"A couple of changes, concentrated into the percpu code, to enable
Clang support on i386 kernels too"
[ And cleans up the macros to generate percpu ops a lot too - Linus ]
* tag 'x86-asm-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/uaccess: Make __get_user_size() Clang compliant on 32-bit
x86/percpu: Remove unused PER_CPU() macro
x86/percpu: Clean up percpu_stable_op()
x86/percpu: Clean up percpu_cmpxchg_op()
x86/percpu: Clean up percpu_xchg_op()
x86/percpu: Clean up percpu_add_return_op()
x86/percpu: Remove "e" constraint from XADD
x86/percpu: Clean up percpu_add_op()
x86/percpu: Clean up percpu_from_op()
x86/percpu: Clean up percpu_to_op()
x86/percpu: Introduce size abstraction macros
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|
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86/alternatives update from Ingo Molnar:
"A single commit that improves the alternatives patching syslog debug
output"
* tag 'x86-alternatives-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/alternatives: Add pr_fmt() to debug macros
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|
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
- Improve uclamp performance by using a static key for the fast path
- Add the "sched_util_clamp_min_rt_default" sysctl, to optimize for
better power efficiency of RT tasks on battery powered devices.
(The default is to maximize performance & reduce RT latencies.)
- Improve utime and stime tracking accuracy, which had a fixed boundary
of error, which created larger and larger relative errors as the
values become larger. This is now replaced with more precise
arithmetics, using the new mul_u64_u64_div_u64() helper in math64.h.
- Improve the deadline scheduler, such as making it capacity aware
- Improve frequency-invariant scheduling
- Misc cleanups in energy/power aware scheduling
- Add sched_update_nr_running tracepoint to track changes to nr_running
- Documentation additions and updates
- Misc cleanups and smaller fixes
* tag 'sched-core-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (54 commits)
sched/doc: Factorize bits between sched-energy.rst & sched-capacity.rst
sched/doc: Document capacity aware scheduling
sched: Document arch_scale_*_capacity()
arm, arm64: Fix selection of CONFIG_SCHED_THERMAL_PRESSURE
Documentation/sysctl: Document uclamp sysctl knobs
sched/uclamp: Add a new sysctl to control RT default boost value
sched/uclamp: Fix a deadlock when enabling uclamp static key
sched: Remove duplicated tick_nohz_full_enabled() check
sched: Fix a typo in a comment
sched/uclamp: Remove unnecessary mutex_init()
arm, arm64: Select CONFIG_SCHED_THERMAL_PRESSURE
sched: Cleanup SCHED_THERMAL_PRESSURE kconfig entry
arch_topology, sched/core: Cleanup thermal pressure definition
trace/events/sched.h: fix duplicated word
linux/sched/mm.h: drop duplicated words in comments
smp: Fix a potential usage of stale nr_cpus
sched/fair: update_pick_idlest() Select group with lowest group_util when idle_cpus are equal
sched: nohz: stop passing around unused "ticks" parameter.
sched: Better document ttwu()
sched: Add a tracepoint to track rq->nr_running
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf event updates from Ingo Molnar:
"HW support updates:
- Add uncore support for Intel Comet Lake
- Add RAPL support for Hygon Fam18h
- Add Intel "IIO stack to PMON mapping" support on Skylake-SP CPUs,
which enumerates per device performance counters via sysfs and
enables the perf stat --iiostat functionality
- Add support for Intel "Architectural LBRs", which generalized the
model specific LBR hardware tracing feature into a
model-independent, architected performance monitoring feature.
Usage is mostly seamless to tooling, as the pre-existing LBR
features are kept, but there's a couple of advantages under the
hood, such as faster context-switching, faster LBR reads, cleaner
exposure of LBR features to guest kernels, etc.
( Since architectural LBRs are supported via XSAVE, there's related
changes to the x86 FPU code as well. )
ftrace/perf updates:
- Add support to add a text poke event to record changes to kernel
text (i.e. self-modifying code) in order to support tracers like
Intel PT decoding through jump labels, kprobes and ftrace
trampolines.
Misc cleanups, smaller fixes..."
* tag 'perf-core-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (47 commits)
perf/x86/rapl: Add Hygon Fam18h RAPL support
kprobes: Remove unnecessary module_mutex locking from kprobe_optimizer()
x86/perf: Fix a typo
perf: <linux/perf_event.h>: drop a duplicated word
perf/x86/intel/lbr: Support XSAVES for arch LBR read
perf/x86/intel/lbr: Support XSAVES/XRSTORS for LBR context switch
x86/fpu/xstate: Add helpers for LBR dynamic supervisor feature
x86/fpu/xstate: Support dynamic supervisor feature for LBR
x86/fpu: Use proper mask to replace full instruction mask
perf/x86: Remove task_ctx_size
perf/x86/intel/lbr: Create kmem_cache for the LBR context data
perf/core: Use kmem_cache to allocate the PMU specific data
perf/core: Factor out functions to allocate/free the task_ctx_data
perf/x86/intel/lbr: Support Architectural LBR
perf/x86/intel/lbr: Factor out intel_pmu_store_lbr
perf/x86/intel/lbr: Factor out rdlbr_all() and wrlbr_all()
perf/x86/intel/lbr: Mark the {rd,wr}lbr_{to,from} wrappers __always_inline
perf/x86/intel/lbr: Unify the stored format of LBR information
perf/x86/intel/lbr: Support LBR_CTL
perf/x86: Expose CPUID enumeration bits for arch LBR
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar:
- LKMM updates: mostly documentation changes, but also some new litmus
tests for atomic ops.
- KCSAN updates: the most important change is that GCC 11 now has all
fixes in place to support KCSAN, so GCC support can be enabled again.
Also more annotations.
- futex updates: minor cleanups and simplifications
- seqlock updates: merge preparatory changes/cleanups for the
'associated locks' facilities.
- lockdep updates:
- simplify IRQ trace event handling
- add various new debug checks
- simplify header dependencies, split out <linux/lockdep_types.h>,
decouple lockdep from other low level headers some more
- fix NMI handling
- misc cleanups and smaller fixes
* tag 'locking-core-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (60 commits)
kcsan: Improve IRQ state trace reporting
lockdep: Refactor IRQ trace events fields into struct
seqlock: lockdep assert non-preemptibility on seqcount_t write
lockdep: Add preemption enabled/disabled assertion APIs
seqlock: Implement raw_seqcount_begin() in terms of raw_read_seqcount()
seqlock: Add kernel-doc for seqcount_t and seqlock_t APIs
seqlock: Reorder seqcount_t and seqlock_t API definitions
seqlock: seqcount_t latch: End read sections with read_seqcount_retry()
seqlock: Properly format kernel-doc code samples
Documentation: locking: Describe seqlock design and usage
locking/qspinlock: Do not include atomic.h from qspinlock_types.h
locking/atomic: Move ATOMIC_INIT into linux/types.h
lockdep: Move list.h inclusion into lockdep.h
locking/lockdep: Fix TRACE_IRQFLAGS vs. NMIs
futex: Remove unused or redundant includes
futex: Consistently use fshared as boolean
futex: Remove needless goto's
futex: Remove put_futex_key()
rwsem: fix commas in initialisation
docs: locking: Replace HTTP links with HTTPS ones
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull header cleanup from Ingo Molnar:
"Separate out the instrumentation_begin()/end() bits from compiler.h"
* tag 'core-headers-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
compiler.h: Move instrumentation_begin()/end() to new <linux/instrumentation.h> header
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Ingo Molnar:
"Fix a recent IRQ affinities regression, add in a missing debugfs
printout that helps the debugging of IRQ affinity logic bugs, and fix
a memory leak"
* tag 'irq-urgent-2020-08-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
genirq/debugfs: Add missing irqchip flags
genirq/affinity: Make affinity setting if activated opt-in
irqdomain/treewide: Free firmware node after domain removal
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 and cross-arch updates from Catalin Marinas:
"Here's a slightly wider-spread set of updates for 5.9.
Going outside the usual arch/arm64/ area is the removal of
read_barrier_depends() series from Will and the MSI/IOMMU ID
translation series from Lorenzo.
The notable arm64 updates include ARMv8.4 TLBI range operations and
translation level hint, time namespace support, and perf.
Summary:
- Removal of the tremendously unpopular read_barrier_depends()
barrier, which is a NOP on all architectures apart from Alpha, in
favour of allowing architectures to override READ_ONCE() and do
whatever dance they need to do to ensure address dependencies
provide LOAD -> LOAD/STORE ordering.
This work also offers a potential solution if compilers are shown
to convert LOAD -> LOAD address dependencies into control
dependencies (e.g. under LTO), as weakly ordered architectures will
effectively be able to upgrade READ_ONCE() to smp_load_acquire().
The latter case is not used yet, but will be discussed further at
LPC.
- Make the MSI/IOMMU input/output ID translation PCI agnostic,
augment the MSI/IOMMU ACPI/OF ID mapping APIs to accept an input ID
bus-specific parameter and apply the resulting changes to the
device ID space provided by the Freescale FSL bus.
- arm64 support for TLBI range operations and translation table level
hints (part of the ARMv8.4 architecture version).
- Time namespace support for arm64.
- Export the virtual and physical address sizes in vmcoreinfo for
makedumpfile and crash utilities.
- CPU feature handling cleanups and checks for programmer errors
(overlapping bit-fields).
- ACPI updates for arm64: disallow AML accesses to EFI code regions
and kernel memory.
- perf updates for arm64.
- Miscellaneous fixes and cleanups, most notably PLT counting
optimisation for module loading, recordmcount fix to ignore
relocations other than R_AARCH64_CALL26, CMA areas reserved for
gigantic pages on 16K and 64K configurations.
- Trivial typos, duplicate words"
Link: http://lkml.kernel.org/r/20200710165203.31284-1-will@kernel.org
Link: http://lkml.kernel.org/r/20200619082013.13661-1-lorenzo.pieralisi@arm.com
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (82 commits)
arm64: use IRQ_STACK_SIZE instead of THREAD_SIZE for irq stack
arm64/mm: save memory access in check_and_switch_context() fast switch path
arm64: sigcontext.h: delete duplicated word
arm64: ptrace.h: delete duplicated word
arm64: pgtable-hwdef.h: delete duplicated words
bus: fsl-mc: Add ACPI support for fsl-mc
bus/fsl-mc: Refactor the MSI domain creation in the DPRC driver
of/irq: Make of_msi_map_rid() PCI bus agnostic
of/irq: make of_msi_map_get_device_domain() bus agnostic
dt-bindings: arm: fsl: Add msi-map device-tree binding for fsl-mc bus
of/device: Add input id to of_dma_configure()
of/iommu: Make of_map_rid() PCI agnostic
ACPI/IORT: Add an input ID to acpi_dma_configure()
ACPI/IORT: Remove useless PCI bus walk
ACPI/IORT: Make iort_msi_map_rid() PCI agnostic
ACPI/IORT: Make iort_get_device_domain IRQ domain agnostic
ACPI/IORT: Make iort_match_node_callback walk the ACPI namespace for NC
arm64: enable time namespace support
arm64/vdso: Restrict splitting VVAR VMA
arm64/vdso: Handle faults on timens page
...
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git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k
Pull m68k updates from Geert Uytterhoeven:
- several Kbuild improvements
- several Mac fixes
- minor cleanups and fixes
- defconfig updates
* tag 'm68k-for-v5.9-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
m68k: defconfig: Update defconfigs for v5.8-rc3
m68k: Use CLEAN_FILES to clean up files
m68k: mac: Improve IOP debug messages
m68k: mac: Don't send uninitialized data in IOP message reply
m68k: mac: Fix IOP status/control register writes
m68k: mac: Don't send IOP message until channel is idle
m68k: atari: Annotate dummy read in ROM port IO code as __maybe_unused
m68k: Use sizeof_field() helper
m68k: Pass -D options to KBUILD_CPPFLAGS instead of KBUILD_{A,C}FLAGS
m68k: Optimize cc-option calls for cpuflags-y
m68k: sun3: Descend to prom from arch/m68k/sun3
m68k: Add arch/m68k/Kbuild
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git://git.kernel.org/pub/scm/linux/kernel/git/rppt/linux
Pull unicore32 removal from Mike Rapoport:
"Remove unicore32 support.
The unicore32 port do not seem maintained for a long time now, there
is no upstream toolchain that can create unicore32 binaries and all
the links to prebuilt toolchains for unicore32 are dead. Even
compilers that were available are not supported by the kernel anymore.
Guenter Roeck says:
"I have stopped building unicore32 images since v4.19 since there is
no available compiler that is still supported by the kernel. I am
surprised that support for it has not been removed from the kernel"
However, it's worth pointing out two things:
- Guan Xuetao is still listed as maintainer and asked for the port to
be kept around the last time Arnd suggested removing it two years
ago. He promised that there would be compiler sources (presumably
llvm), but has not made those available since.
- https://github.com/gxt has patches to linux-4.9 and qemu-2.7, both
released in 2016, with patches dated early 2019. These patches
mainly restore a syscall ABI that was never part of mainline Linux
but apparently used in production. qemu-2.8 removed support for
that ABI and newer kernels (4.19+) can no longer be built with the
old toolchain, so apparently there will not be any future updates
to that git tree"
* tag 'rm-unicore32' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/linux:
MAINTAINERS: remove "PKUNITY SOC DRIVERS" entry
rtc: remove fb-puv3 driver
video: fbdev: remove fb-puv3 driver
pwm: remove pwm-puv3 driver
input: i8042: remove support for 8042-unicore32io
i2c/buses: remove i2c-puv3 driver
cpufreq: remove unicore32 driver
arch: remove unicore32 port
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git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Heiko Carstens:
- Add support for function error injection.
- Add support for custom exception handlers, as required by
BPF_PROBE_MEM.
- Add support for BPF_PROBE_MEM.
- Add trace events for idle enter / exit for the s390 specific idle
implementation.
- Remove unused zcore memmmap device.
- Remove unused "raw view" from s390 debug feature.
- AP bus + zcrypt device driver code refactoring.
- Provide cex4 cca sysfs attributes for cex3 for zcrypt device driver.
- Expose only minimal interface to walk physmem for mm/memblock. This
is a common code change and it has been agreed on with Mike Rapoport
and Andrew Morton that this can go upstream via the s390 tree.
- Rework of the s390 vmem/vmmemap code to allow for future memory hot
remove.
- Get rid of FORCE_MAX_ZONEORDER to finally allow for order-10
allocations again, instead of only order-8 allocations.
- Various small improvements and fixes.
* tag 's390-5.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (48 commits)
s390/vmemmap: coding style updates
s390/vmemmap: avoid memset(PAGE_UNUSED) when adding consecutive sections
s390/vmemmap: remember unused sub-pmd ranges
s390/vmemmap: fallback to PTEs if mapping large PMD fails
s390/vmem: cleanup empty page tables
s390/vmemmap: take the vmem_mutex when populating/freeing
s390/vmemmap: cleanup when vmemmap_populate() fails
s390/vmemmap: extend modify_pagetable() to handle vmemmap
s390/vmem: consolidate vmem_add_range() and vmem_remove_range()
s390/vmem: rename vmem_add_mem() to vmem_add_range()
s390: enable HAVE_FUNCTION_ERROR_INJECTION
s390/pci: clarify comment in s390_mmio_read/write
s390/time: improve comparison for tod steering
s390/time: select CLOCKSOURCE_VALIDATE_LAST_CYCLE
s390/time: use CLOCKSOURCE_MASK
s390/bpf: implement BPF_PROBE_MEM
s390/kernel: expand exception table logic to allow new handling options
s390/kernel: unify EX_TABLE* implementations
s390/mm: allow order 10 allocations
s390/mm: avoid trimming to MAX_ORDER
...
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