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Pull Xtensa updates from Max Filippov:
- add SSP support
- add KASAN support
- improvements to xtensa-specific assembly:
- use ENTRY and ENDPROC consistently
- clean up and unify word alignment macros
- clean up and unify fixup marking
- use 'call' instead of 'callx' where possible
- various cleanups:
- consiolidate kernel stack size related definitions
- replace #ifdef'fed/commented out debug printk statements with
pr_debug
- use struct exc_table instead of flat array for exception handling
data
- build kernel with -mtext-section-literals; simplify xtensa linker
script
- fix futex_atomic_cmpxchg_inatomic()
* tag 'xtensa-20180129' of git://github.com/jcmvbkbc/linux-xtensa: (21 commits)
xtensa: fix futex_atomic_cmpxchg_inatomic
xtensa: shut up gcc-8 warnings
xtensa: print kernel sections info in mem_init
xtensa: use generic strncpy_from_user with KASAN
xtensa: use __memset in __xtensa_clear_user
xtensa: add support for KASAN
xtensa: move fixmap and kmap just above the KSEG
xtensa: don't clear swapper_pg_dir in paging_init
xtensa: extract init_kio
xtensa: implement early_trap_init
xtensa: clean up exception handling structure
xtensa: clean up custom-controlled debug output
xtensa: enable stack protector
xtensa: print hardware config ID on startup
xtensa: consolidate kernel stack size related definitions
xtensa: clean up functions in assembly code
xtensa: clean up word alignment macros in assembly code
xtensa: clean up fixups in assembly code
xtensa: use call instead of callx in assembly code
xtensa: build kernel with text-section-literals
...
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Pull m68k updates from Geert Uytterhoeven:
- first part of an overhaul of the NuBus subsystem, to bring it up to
modern driver model standards
- a race condition fix for Mac
- defconfig updates
* tag 'm68k-for-v4.16-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
MAINTAINERS: Add NuBus subsystem entry
m68k/mac: Fix race conditions in OSS interrupt dispatch
nubus: Add support for the driver model
nubus: Add expansion_type values for various Mac models
nubus: Adopt standard linked list implementation
nubus: Rename struct nubus_dev
nubus: Rework /proc/bus/nubus/s/ implementation
nubus: Generalize block resource handling
nubus: Clean up whitespace
nubus: Remove redundant code
nubus: Call proc_mkdir() not more than once per slot directory
nubus: Validate slot resource IDs
nubus: Fix log spam
nubus: Use static functions where possible
nubus: Fix up header split
nubus: Avoid array underflow and overflow
m68k/defconfig: Update defconfigs for v4.15-rc1
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Pull MTD updates from Boris Brezillon:
"MTD core changes:
- Rework core functions to avoid duplicating generic checks in
NAND/OneNAND sub-layers
- Update the MAINTAINERS entry to reflect the fact that MTD
maintainers now use a single git tree
MTD driver changes:
- CFI: use macros instead of inline functions to limit stack usage
and make KASAN happy
NAND core changes:
- Fix NAND_CMD_NONE handling in nand_command[_lp]() hooks
- Introduce the ->exec_op() infrastructure
- Rework NAND buffers handling
- Fix ECC requirements for K9F4G08U0D
- Fix nand_do_read_oob() to return the number of bitflips
- Mark K9F1G08U0E as not supporting subpage writes
NAND driver changes:
- MTK: Rework the driver to support new IP versions
- OMAP OneNAND: Full rework to use new APIs (libgpio, dmaengine) and
fix DT support
- Marvell: Add a new driver to replace the pxa3xx one
SPI NOR core changes:
- Add support to new ISSI and Cypress/Spansion memory parts.
- Fix support of Micron memories by checking error bits in the FSR.
- Fix update of block-protection bits by reading back the SR.
- Restore the internal state of the SPI flash memory when removing
the device.
SPI NOR driver changes:
- Maintenance for Freescale, Intel and Metiatek drivers.
- Add support of the direct access mode for the Cadence QSPI
controller"
* tag 'mtd/for-4.16' of git://git.infradead.org/linux-mtd: (93 commits)
mtd: nand: sunxi: Fix ECC strength choice
mtd: nand: gpmi: Fix subpage reads
mtd: nand: Fix build issues due to an anonymous union
mtd: nand: marvell: Fix missing memory allocation modifier
mtd: nand: marvell: remove redundant variable 'oob_len'
mtd: nand: marvell: fix spelling mistake: "suceed"-> "succeed"
mtd: onenand: omap2: Remove redundant dev_err call in omap2_onenand_probe()
mtd: Remove duplicate checks on mtd_oob_ops parameter
mtd: Fallback to ->_read/write_oob() when ->_read/write() is missing
mtd: mtdpart: Make ECC stat handling consistent
mtd: onenand: omap2: print resource using %pR format string
mtd: mtk-nor: modify functions' name more generally
mtd: onenand: samsung: remove incorrect __iomem annotation
MAINTAINERS: Add entry for Marvell NAND controller driver
ARM: OMAP2+: Remove gpmc-onenand
mtd: onenand: omap2: Configure driver from DT
mtd: onenand: omap2: Decouple DMA enabling from INT pin availability
mtd: onenand: omap2: Do not make delay for GPIO OMAP3 specific
mtd: onenand: omap2: Convert to use dmaengine for memcpy
mtd: onenand: omap2: Unify OMAP2 and OMAP3 DMA implementation
...
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Pull ACPI updates from Rafael Wysocki:
"The majority of this is an update of the ACPICA kernel code to
upstream revision 20171215 with a cosmetic change and a maintainers
information update on top of it.
The rest is mostly some minor fixes and cleanups in the ACPI drivers
and cleanups to initialization on x86.
Specifics:
- Update the ACPICA kernel code to upstream revision 20171215 including:
* Support for ACPI 6.0A changes in the NFIT table (Bob Moore)
* Local 64-bit divide in string conversions (Bob Moore)
* Fix for a regression in acpi_evaluate_object_type() (Bob Moore)
* Fixes for memory leaks during package object resolution (Bob
Moore)
* Deployment of safe version of strncpy() (Bob Moore)
* Debug and messaging updates (Bob Moore)
* Support for PDTT, SDEV, TPM2 tables in iASL and tools (Bob
Moore)
* Null pointer dereference avoidance in Op and cleanups (Colin Ian
King)
* Fix for memory leak from building prefixed pathname (Erik
Schmauss)
* Coding style fixes, disassembler and compiler updates (Hanjun
Guo, Erik Schmauss)
* Additional PPTT flags from ACPI 6.2 (Jeremy Linton)
* Fix for an off-by-one error in acpi_get_timer_duration()
(Jung-uk Kim)
* Infinite loop detection timeout and utilities cleanups (Lv
Zheng)
* Windows 10 version 1607 and 1703 OSI strings (Mario
Limonciello)
- Update ACPICA information in MAINTAINERS to reflect the current
status of ACPICA maintenance and rename a local variable in one
function to match the corresponding upstream code (Rafael Wysocki)
- Clean up ACPI-related initialization on x86 (Andy Shevchenko)
- Add support for Intel Merrifield to the ACPI GPIO code (Andy
Shevchenko)
- Clean up ACPI PMIC drivers (Andy Shevchenko, Arvind Yadav)
- Fix the ACPI Generic Event Device (GED) driver to free IRQs on
shutdown and clean up the PCI IRQ Link driver (Sinan Kaya)
- Make the GHES code call into the AER driver on all errors and clean
up the ACPI APEI code (Colin Ian King, Tyler Baicar)
- Make the IA64 ACPI NUMA code parse all SRAT entries (Ganapatrao
Kulkarni)
- Add a lid switch blacklist to the ACPI button driver and make it
print extra debug messages on lid events (Hans de Goede)
- Add quirks for Asus GL502VSK and UX305LA to the ACPI battery driver
and clean it up somewhat (Bjørn Mork, Kai-Heng Feng)
- Add device link for CHT SD card dependency on I2C to the ACPI LPSS
(Intel SoCs) driver and make it avoid creating platform device
objects for devices without MMIO resources (Adrian Hunter, Hans de
Goede)
- Fix the ACPI GPE mask kernel command line parameter handling
(Prarit Bhargava)
- Fix the handling of (incorrectly exposed) backlight interfaces
without LCD (Hans de Goede)
- Fix the usage of debugfs_create_*() in the ACPI EC driver (Geert
Uytterhoeven)"
* tag 'acpi-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (62 commits)
ACPI/PCI: pci_link: reduce verbosity when IRQ is enabled
ACPI / LPSS: Do not instiate platform_dev for devs without MMIO resources
ACPI / PMIC: Convert to use builtin_platform_driver() macro
ACPI / x86: boot: Propagate error code in acpi_gsi_to_irq()
ACPICA: Update version to 20171215
ACPICA: trivial style fix, no functional change
ACPICA: Fix a couple memory leaks during package object resolution
ACPICA: Recognize the Windows 10 version 1607 and 1703 OSI strings
ACPICA: DT compiler: prevent error if optional field at the end of table is not present
ACPICA: Rename a global variable, no functional change
ACPICA: Create and deploy safe version of strncpy
ACPICA: Cleanup the global variables and update comments
ACPICA: Debugger: fix slight indentation issue
ACPICA: Fix a regression in the acpi_evaluate_object_type() interface
ACPICA: Update for a few debug output statements
ACPICA: Debug output, no functional change
ACPI: EC: Fix debugfs_create_*() usage
ACPI / video: Default lcd_only to true on Win8-ready and newer machines
ACPI / x86: boot: Don't setup SCI on HW-reduced platforms
ACPI / x86: boot: Use INVALID_ACPI_IRQ instead of 0 for acpi_sci_override_gsi
...
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Pull power management updates from Rafael Wysocki:
"This includes some infrastructure changes in the PM core, mostly
related to integration between runtime PM and system-wide suspend and
hibernation, plus some driver changes depending on them and fixes for
issues in that area which have become quite apparent recently.
Also included are changes making more x86-based systems use the Low
Power Sleep S0 _DSM interface by default, which turned out to be
necessary to handle power button wakeups from suspend-to-idle on
Surface Pro3.
On the cpufreq front we have fixes and cleanups in the core, some new
hardware support, driver updates and the removal of some unused code
from the CPU cooling thermal driver.
Apart from this, the Operating Performance Points (OPP) framework is
prepared to be used with power domains in the future and there is a
usual bunch of assorted fixes and cleanups.
Specifics:
- Define a PM driver flag allowing drivers to request that their
devices be left in suspend after system-wide transitions to the
working state if possible and add support for it to the PCI bus
type and the ACPI PM domain (Rafael Wysocki).
- Make the PM core carry out optimizations for devices with driver PM
flags set in some cases and make a few drivers set those flags
(Rafael Wysocki).
- Fix and clean up wrapper routines allowing runtime PM device
callbacks to be re-used for system-wide PM, change the generic
power domains (genpd) framework to stop using those routines
incorrectly and fix up a driver depending on that behavior of genpd
(Rafael Wysocki, Ulf Hansson, Geert Uytterhoeven).
- Fix and clean up the PM core's device wakeup framework and
re-factor system-wide PM core code related to device wakeup
(Rafael Wysocki, Ulf Hansson, Brian Norris).
- Make more x86-based systems use the Low Power Sleep S0 _DSM
interface by default (to fix power button wakeup from
suspend-to-idle on Surface Pro3) and add a kernel command line
switch to tell it to ignore the system sleep blacklist in the ACPI
core (Rafael Wysocki).
- Fix a race condition related to cpufreq governor module removal and
clean up the governor management code in the cpufreq core (Rafael
Wysocki).
- Drop the unused generic code related to the handling of the static
power energy usage model in the CPU cooling thermal driver along
with the corresponding documentation (Viresh Kumar).
- Add mt2712 support to the Mediatek cpufreq driver (Andrew-sh
Cheng).
- Add a new operating point to the imx6ul and imx6q cpufreq drivers
and switch the latter to using clk_bulk_get() (Anson Huang, Dong
Aisheng).
- Add support for multiple regulators to the TI cpufreq driver along
with a new DT binding related to that and clean up that driver
somewhat (Dave Gerlach).
- Fix a powernv cpufreq driver regression leading to incorrect CPU
frequency reporting, fix that driver to deal with non-continguous
P-states correctly and clean it up (Gautham Shenoy, Shilpasri
Bhat).
- Add support for frequency scaling on Armada 37xx SoCs through the
generic DT cpufreq driver (Gregory CLEMENT).
- Fix error code paths in the mvebu cpufreq driver (Gregory CLEMENT).
- Fix a transition delay setting regression in the longhaul cpufreq
driver (Viresh Kumar).
- Add Skylake X (server) support to the intel_pstate cpufreq driver
and clean up that driver somewhat (Srinivas Pandruvada).
- Clean up the cpufreq statistics collection code (Viresh Kumar).
- Drop cluster terminology and dependency on physical_package_id from
the PSCI driver and drop dependency on arm_big_little from the SCPI
cpufreq driver (Sudeep Holla).
- Add support for system-wide suspend and resume to the RAPL power
capping driver and drop a redundant semicolon from it (Zhen Han,
Luis de Bethencourt).
- Make SPI domain validation (in the SCSI SPI transport driver) and
system-wide suspend mutually exclusive as they rely on the same
underlying mechanism and cannot be carried out at the same time
(Bart Van Assche).
- Fix the computation of the amount of memory to preallocate in the
hibernation core and clean up one function in there (Rainer Fiebig,
Kyungsik Lee).
- Prepare the Operating Performance Points (OPP) framework for being
used with power domains and clean up one function in it (Viresh
Kumar, Wei Yongjun).
- Clean up the generic sysfs interface for device PM (Andy
Shevchenko).
- Fix several minor issues in power management frameworks and clean
them up a bit (Arvind Yadav, Bjorn Andersson, Geert Uytterhoeven,
Gustavo Silva, Julia Lawall, Luis de Bethencourt, Paul Gortmaker,
Sergey Senozhatsky, gaurav jindal).
- Make it easier to disable PM via Kconfig (Mark Brown).
- Clean up the cpupower and intel_pstate_tracer utilities (Doug
Smythies, Laura Abbott)"
* tag 'pm-4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (89 commits)
PCI / PM: Remove spurious semicolon
cpufreq: scpi: remove arm_big_little dependency
drivers: psci: remove cluster terminology and dependency on physical_package_id
powercap: intel_rapl: Fix trailing semicolon
dmaengine: rcar-dmac: Make DMAC reinit during system resume explicit
PM / runtime: Allow no callbacks in pm_runtime_force_suspend|resume()
PM / hibernate: Drop unused parameter of enough_swap
PM / runtime: Check ignore_children in pm_runtime_need_not_resume()
PM / runtime: Rework pm_runtime_force_suspend/resume()
PM / genpd: Stop/start devices without pm_runtime_force_suspend/resume()
cpufreq: powernv: Dont assume distinct pstate values for nominal and pmin
cpufreq: intel_pstate: Add Skylake servers support
cpufreq: intel_pstate: Replace bxt_funcs with core_funcs
platform/x86: surfacepro3: Support for wakeup from suspend-to-idle
ACPI / PM: Use Low Power S0 Idle on more systems
PM / wakeup: Print warn if device gets enabled as wakeup source during sleep
PM / domains: Don't skip driver's ->suspend|resume_noirq() callbacks
PM / core: Propagate wakeup_path status flag in __device_suspend_late()
PM / core: Re-structure code for clearing the direct_complete flag
powercap: add suspend and resume mechanism for SOC power limit
...
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Pull init_task initializer cleanups from David Howells:
"It doesn't seem useful to have the init_task in a header file rather
than in a normal source file. We could consolidate init_task handling
instead and expand out various macros.
Here's a series of patches that consolidate init_task handling:
(1) Make THREAD_SIZE available to vmlinux.lds for cris, hexagon and
openrisc.
(2) Alter the INIT_TASK_DATA linker script macro to set
init_thread_union and init_stack rather than defining these in C.
Insert init_task and init_thread_into into the init_stack area in
the linker script as appropriate to the configuration, with
different section markers so that they end up correctly ordered.
We can then get merge ia64's init_task.c into the main one.
We then have a bunch of single-use INIT_*() macros that seem only
to be macros because they used to be used per-arch. We can then
expand these in place of the user and get rid of a few lines and
a lot of backslashes.
(3) Expand INIT_TASK() in place.
(4) Expand in place various small INIT_*() macros that are defined
conditionally. Expand them and surround them by #if[n]def/#endif
in the .c file as it takes fewer lines.
(5) Expand INIT_SIGNALS() and INIT_SIGHAND() in place.
(6) Expand INIT_STRUCT_PID in place.
These macros can then be discarded"
* tag 'init_task-20180117' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
Expand INIT_STRUCT_PID and remove
Expand the INIT_SIGNALS and INIT_SIGHAND macros and remove
Expand various INIT_* macros and remove
Expand INIT_TASK() in init/init_task.c and remove
Construct init thread stack in the linker script rather than by union
openrisc: Make THREAD_SIZE available to vmlinux.lds
hexagon: Make THREAD_SIZE available to vmlinux.lds
cris: Make THREAD_SIZE available to vmlinux.lds
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Signed-off-by: David S. Miller <davem@davemloft.net>
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Alexei Starovoitov says:
====================
pull-request: bpf-next 2018-01-26
The following pull-request contains BPF updates for your *net-next* tree.
The main changes are:
1) A number of extensions to tcp-bpf, from Lawrence.
- direct R or R/W access to many tcp_sock fields via bpf_sock_ops
- passing up to 3 arguments to bpf_sock_ops functions
- tcp_sock field bpf_sock_ops_cb_flags for controlling callbacks
- optionally calling bpf_sock_ops program when RTO fires
- optionally calling bpf_sock_ops program when packet is retransmitted
- optionally calling bpf_sock_ops program when TCP state changes
- access to tclass and sk_txhash
- new selftest
2) div/mod exception handling, from Daniel.
One of the ugly leftovers from the early eBPF days is that div/mod
operations based on registers have a hard-coded src_reg == 0 test
in the interpreter as well as in JIT code generators that would
return from the BPF program with exit code 0. This was basically
adopted from cBPF interpreter for historical reasons.
There are multiple reasons why this is very suboptimal and prone
to bugs. To name one: the return code mapping for such abnormal
program exit of 0 does not always match with a suitable program
type's exit code mapping. For example, '0' in tc means action 'ok'
where the packet gets passed further up the stack, which is just
undesirable for such cases (e.g. when implementing policy) and
also does not match with other program types.
After considering _four_ different ways to address the problem,
we adapt the same behavior as on some major archs like ARMv8:
X div 0 results in 0, and X mod 0 results in X. aarch64 and
aarch32 ISA do not generate any traps or otherwise aborts
of program execution for unsigned divides.
Given the options, it seems the most suitable from
all of them, also since major archs have similar schemes in
place. Given this is all in the realm of undefined behavior,
we still have the option to adapt if deemed necessary.
3) sockmap sample refactoring, from John.
4) lpm map get_next_key fixes, from Yonghong.
5) test cleanups, from Alexei and Prashant.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pull x86 retpoline fixlet from Thomas Gleixner:
"Remove the ESP/RSP thunks for retpoline as they cannot ever work.
Get rid of them before they show up in a release"
* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/retpoline: Remove the esp/rsp thunk
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Pull x86 fixes from Thomas Gleixner:
"A set of small fixes for 4.15:
- Fix vmapped stack synchronization on systems with 4-level paging
and a large amount of memory caused by a missing 5-level folding
which made the pgd synchronization logic to fail and causing double
faults.
- Add a missing sanity check in the vmalloc_fault() logic on 5-level
paging systems.
- Bring back protection against accessing a freed initrd in the
microcode loader which was lost by a wrong merge conflict
resolution.
- Extend the Broadwell micro code loading sanity check.
- Add a missing ENDPROC annotation in ftrace assembly code which
makes ORC unhappy.
- Prevent loading the AMD power module on !AMD platforms. The load
itself is uncritical, but an unload attempt results in a kernel
crash.
- Update Peter Anvins role in the MAINTAINERS file"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/ftrace: Add one more ENDPROC annotation
x86: Mark hpa as a "Designated Reviewer" for the time being
x86/mm/64: Tighten up vmalloc_fault() sanity checks on 5-level kernels
x86/mm/64: Fix vmapped stack syncing on very-large-memory 4-level systems
x86/microcode: Fix again accessing initrd after having been freed
x86/microcode/intel: Extend BDW late-loading further with LLC size check
perf/x86/amd/power: Do not load AMD power module on !AMD platforms
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Pull perf fixes from Thomas Gleixner:
"Four patches which all address lock inversions and deadlocks in the
perf core code and the Intel debug store"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/x86: Fix perf,x86,cpuhp deadlock
perf/core: Fix ctx::mutex deadlock
perf/core: Fix another perf,trace,cpuhp lock inversion
perf/core: Fix lock inversion between perf,trace,cpuhp
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When ORC support was added for the ftrace_64.S code, an ENDPROC
for function_hook() was missed. This results in the following warning:
arch/x86/kernel/ftrace_64.o: warning: objtool: .entry.text+0x0: unreachable instruction
Fixes: e2ac83d74a4d ("x86/ftrace: Fix ORC unwinding from ftrace handlers")
Reported-by: Steven Rostedt <rostedt@goodmis.org>
Reported-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lkml.kernel.org/r/20180128022150.dqierscqmt3uwwsr@treble
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When a CPU detects its locked up via soft_nmi_interrupt() we have
pt_regs, so print the regs->nip, which points to where we took the
soft-NMI.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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soft_nmi_interrupt() is called directly from the asm exception
handling code, which passes regs as a pointer to the stack. So regs
can't be NULL, it may be full of junk, but that's a separate problem.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Use pr_fmt() in the watchdog code, so we don't have to say "Watchdog"
so many times.
Rather than "CPU:%d" just spell it "CPU %d", "Hard" doesn't need a
capital in the middle of a sentence, and "LOCKUP other CPUS" should be
"LOCKUP on other CPUS".
Also make it clear when a CPU self detects a lockup by spelling it
out.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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The QS21/22 IBM Cell blades had a southbridge chip called Axon. This
could have DDR DIMMs attached to it, though they were not directly
usable as RAM, instead they could be used as some sort of buffer, if
applications were written specifically to use the block device
provided by the driver.
Although the driver supposedly had direct access support, it was
apparently never tested (see commit 91117a20245b ("axonram: Fix bug in
direct_access")).
These machines have not been available for over 5 years, and were
never widely in use. It seems highly unlikely anyone is using this
driver.
In general we're happy to leave old drivers in the tree, but because
DAX is involved this driver is caught up in the ongoing work in that
area, but none of the DAX folks are able to test it.
So remove the driver, if any one *is* using it, we'll be happy to put
it back.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Make it all a function which does the WRMSR instead of having a hairy
inline asm.
[dwmw2: export it, fix CONFIG_RETPOLINE issues]
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: ak@linux.intel.com
Cc: dave.hansen@intel.com
Cc: karahmed@amazon.de
Cc: arjan@linux.intel.com
Cc: torvalds@linux-foundation.org
Cc: peterz@infradead.org
Cc: bp@alien8.de
Cc: pbonzini@redhat.com
Cc: tim.c.chen@linux.intel.com
Cc: gregkh@linux-foundation.org
Link: https://lkml.kernel.org/r/1517070274-12128-4-git-send-email-dwmw@amazon.co.uk
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Simplify it to call an asm-function instead of pasting 41 insn bytes at
every call site. Also, add alignment to the macro as suggested here:
https://support.google.com/faqs/answer/7625886
[dwmw2: Clean up comments, let it clobber %ebx and just tell the compiler]
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: ak@linux.intel.com
Cc: dave.hansen@intel.com
Cc: karahmed@amazon.de
Cc: arjan@linux.intel.com
Cc: torvalds@linux-foundation.org
Cc: peterz@infradead.org
Cc: bp@alien8.de
Cc: pbonzini@redhat.com
Cc: tim.c.chen@linux.intel.com
Cc: gregkh@linux-foundation.org
Link: https://lkml.kernel.org/r/1517070274-12128-3-git-send-email-dwmw@amazon.co.uk
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We want to expose the hardware features simply in /proc/cpuinfo as "ibrs",
"ibpb" and "stibp". Since AMD has separate CPUID bits for those, use them
as the user-visible bits.
When the Intel SPEC_CTRL bit is set which indicates both IBRS and IBPB
capability, set those (AMD) bits accordingly. Likewise if the Intel STIBP
bit is set, set the AMD STIBP that's used for the generic hardware
capability.
Hide the rest from /proc/cpuinfo by putting "" in the comments. Including
RETPOLINE and RETPOLINE_AMD which shouldn't be visible there. There are
patches to make the sysfs vulnerabilities information non-readable by
non-root, and the same should apply to all information about which
mitigations are actually in use. Those *shouldn't* appear in /proc/cpuinfo.
The feature bit for whether IBPB is actually used, which is needed for
ALTERNATIVEs, is renamed to X86_FEATURE_USE_IBPB.
Originally-by: Borislav Petkov <bp@suse.de>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: ak@linux.intel.com
Cc: dave.hansen@intel.com
Cc: karahmed@amazon.de
Cc: arjan@linux.intel.com
Cc: torvalds@linux-foundation.org
Cc: peterz@infradead.org
Cc: bp@alien8.de
Cc: pbonzini@redhat.com
Cc: tim.c.chen@linux.intel.com
Cc: gregkh@linux-foundation.org
Link: https://lkml.kernel.org/r/1517070274-12128-2-git-send-email-dwmw@amazon.co.uk
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If sysfs is disabled and RETPOLINE not defined:
arch/x86/kernel/cpu/bugs.c:97:13: warning: ‘spectre_v2_bad_module’ defined but not used
[-Wunused-variable]
static bool spectre_v2_bad_module;
Hide it.
Fixes: caf7501a1b4e ("module/retpoline: Warn about missing retpoline in module")
Reported-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Woodhouse <dwmw2@infradead.org>
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The mpc52xx_gpt code currently implements an irq_chip for handling
interrupts; due to how irq_chip handling is done, it's necessary for
the irq_chip methods to be invoked from hardirq context, even on a a
real-time kernel. Because the spinlock_t type becomes a "sleeping"
spinlock w/ RT kernels, it is not suitable to be used with irq_chips.
A quick audit of the operations under the lock reveal that they do
only minimal, bounded work, and are therefore safe to do under a raw
spinlock.
Signed-off-by: Julia Cartwright <julia@ni.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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On powerpc systems with shared configurations of CPUs and memory and
memoryless nodes at boot, an event ordering problem was observed on a
SLES12 build platforms with the hot-add of CPUs to the memoryless
nodes.
* The most common error occurred when the memory SLAB driver attempted
to reference the memoryless node to which a CPU was being added
before the kernel had finished initializing all of the data
structures for the CPU and exited 'device_online' under
DLPAR/hot-add.
Normally the memoryless node would be initialized through the call
path device_online ... arch_update_cpu_topology ... find_cpu_nid ...
try_online_node. This patch ensures that the powerpc node will be
initialized as early as possible, even if it was memoryless and
CPU-less at the point when we are trying to hot-add a new CPU to it.
Signed-off-by: Michael Bringmann <mwb@linux.vnet.ibm.com>
Reviewed-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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This patch fixes some problems encountered at runtime with
configurations that support memory-less nodes, or that hot-add CPUs
into nodes that are memoryless during system execution after boot. The
problems of interest include:
* Nodes known to powerpc to be memoryless at boot, but to have CPUs in
them are allowed to be 'possible' and 'online'. Memory allocations
for those nodes are taken from another node that does have memory
until and if memory is hot-added to the node.
* Nodes which have no resources assigned at boot, but which may still
be referenced subsequently by affinity or associativity attributes,
are kept in the list of 'possible' nodes for powerpc. Hot-add of
memory or CPUs to the system can reference these nodes and bring
them online instead of redirecting the references to one of the set
of nodes known to have memory at boot.
Note that this software operates under the context of CPU hotplug. We
are not doing memory hotplug in this code, but rather updating the
kernel's CPU topology (i.e. arch_update_cpu_topology /
numa_update_cpu_topology). We are initializing a node that may be used
by CPUs or memory before it can be referenced as invalid by a CPU
hotplug operation. CPU hotplug operations are protected by a range of
APIs including cpu_maps_update_begin/cpu_maps_update_done,
cpus_read/write_lock / cpus_read/write_unlock, device locks, and more.
Memory hotplug operations, including try_online_node, are protected by
mem_hotplug_begin/mem_hotplug_done, device locks, and more. In the
case of CPUs being hot-added to a previously memoryless node, the
try_online_node operation occurs wholly within the CPU locks with no
overlap. Using HMC hot-add/hot-remove operations, we have been able to
add and remove CPUs to any possible node without failures. HMC
operations involve a degree self-serialization, though.
Signed-off-by: Michael Bringmann <mwb@linux.vnet.ibm.com>
Reviewed-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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On powerpc systems which allow 'hot-add' of CPU or memory resources,
it may occur that the new resources are to be inserted into nodes that
were not used for these resources at bootup. In the kernel, any node
that is used must be defined and initialized. These empty nodes may
occur when,
* Dedicated vs. shared resources. Shared resources require information
such as the VPHN hcall for CPU assignment to nodes. Associativity
decisions made based on dedicated resource rules, such as
associativity properties in the device tree, may vary from decisions
made using the values returned by the VPHN hcall.
* memoryless nodes at boot. Nodes need to be defined as 'possible' at
boot for operation with other code modules. Previously, the powerpc
code would limit the set of possible nodes to those which have
memory assigned at boot, and were thus online. Subsequent add/remove
of CPUs or memory would only work with this subset of possible
nodes.
* memoryless nodes with CPUs at boot. Due to the previous restriction
on nodes, nodes that had CPUs but no memory were being collapsed
into other nodes that did have memory at boot. In practice this
meant that the node assignment presented by the runtime kernel
differed from the affinity and associativity attributes presented by
the device tree or VPHN hcalls. Nodes that might be known to the
pHyp were not 'possible' in the runtime kernel because they did not
have memory at boot.
This patch ensures that sufficient nodes are defined to support
configuration requirements after boot, as well as at boot. This patch
set fixes a couple of problems.
* Nodes known to powerpc to be memoryless at boot, but to have CPUs in
them are allowed to be 'possible' and 'online'. Memory allocations
for those nodes are taken from another node that does have memory
until and if memory is hot-added to the node. * Nodes which have no
resources assigned at boot, but which may still be referenced
subsequently by affinity or associativity attributes, are kept in
the list of 'possible' nodes for powerpc. Hot-add of memory or CPUs
to the system can reference these nodes and bring them online
instead of redirecting to one of the set of nodes that were known to
have memory at boot.
This patch extracts the value of the lowest domain level (number of
allocable resources) from the device tree property
"ibm,max-associativity-domains" to use as the maximum number of nodes
to setup as possibly available in the system. This new setting will
override the instruction:
nodes_and(node_possible_map, node_possible_map, node_online_map);
presently seen in the function arch/powerpc/mm/numa.c:initmem_init().
If the "ibm,max-associativity-domains" property is not present at
boot, no operation will be performed to define or enable additional
nodes, or enable the above 'nodes_and()'.
Signed-off-by: Michael Bringmann <mwb@linux.vnet.ibm.com>
Reviewed-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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clear_thread_tidr() is called in interrupt context as a part of delayed
put of the task structure (i.e as a part of timer interrupt). To prevent
a deadlock, block interrupts when holding vas_thread_id_lock to set/
clear TIDR for a task.
Fixes: ec233ede4c86 ("powerpc: Add support for setting SPRN_TIDR")
Cc: stable@vger.kernel.org # v4.15+
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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The pcidev value stored in pci_dn is only used for NPU/NPU2
initialization. We can easily drop the cached pointer and
use an ancient helper - pci_get_domain_bus_and_slot() instead in order
to reduce complexity.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Acked-by: Russell Currey <ruscur@russell.cc>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Most of the time, flush_tlb_range() is called on single pages.
At the time being, flush_tlb_range() inconditionnaly calls
flush_tlb_mm() which flushes at least the entire PID pages and on
older CPUs like 4xx or 8xx it flushes the entire TLB table.
This patch calls flush_tlb_page() instead of flush_tlb_mm() when
the range is a single page.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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When enabling SR-IOV in pseries platform, the VF bar properties for a
PF are reported on the device node in the device tree.
This patch adds the IOV Bar resources to Linux structures from the
device tree for later use when configuring SR-IOV by PF driver.
Signed-off-by: Bryant G. Ly <bryantly@linux.vnet.ibm.com>
Signed-off-by: Juan J. Alvarez <jjalvare@linux.vnet.ibm.com>
Acked-by: Russell Currey <ruscur@russell.cc>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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After initial validation of SR-IOV resources, firmware will associate
PEs to the dynamic VFs created within this call. This patch adds the
association of PEs to the PF array of PE numbers indexed by VF.
Signed-off-by: Bryant G. Ly <bryantly@linux.vnet.ibm.com>
Signed-off-by: Juan J. Alvarez <jjalvare@linux.vnet.ibm.com>
Acked-by: Russell Currey <ruscur@russell.cc>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Introduce a method for notify resume to be called from sysfs. In this
patch one can now call notify resume from sysfs when is supported by
platform.
Signed-off-by: Bryant G. Ly <bryantly@linux.vnet.ibm.com>
Signed-off-by: Juan J. Alvarez <jjalvare@linux.vnet.ibm.com>
Acked-by: Russell Currey <ruscur@russell.cc>
[mpe: Add NULL check, add empty versions to avoid #ifdefs]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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When pseries SR-IOV is enabled and after a PF driver has resumed from
EEH, platform has to be notified of the event so the child VFs can be
allowed to resume their normal recovery path.
This patch makes the EEH operation allow unfreeze platform dependent
code and adds the call to pseries EEH code.
Signed-off-by: Bryant G. Ly <bryantly@linux.vnet.ibm.com>
Signed-off-by: Juan J. Alvarez <jjalvare@linux.vnet.ibm.com>
Acked-by: Russell Currey <ruscur@russell.cc>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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To correctly use EEH code one has to make sure that the EEH_PE_VF is
set for dynamic created VFs. Therefore this patch allocates an eeh_pe
of eeh type EEH_PE_VF and associates PE with parent.
Signed-off-by: Bryant G. Ly <bryantly@linux.vnet.ibm.com>
Signed-off-by: Juan J. Alvarez <jjalvare@linux.vnet.ibm.com>
Acked-by: Russell Currey <ruscur@russell.cc>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Devices can go offline when erors reported. This patch adds a change
to the kernel object and lets udev know of error. When device resumes,
a change is also set reporting device as online. Therefore, EEH and
AER events are better propagated to user space for PCI devices in all
arches.
Signed-off-by: Bryant G. Ly <bryantly@linux.vnet.ibm.com>
Signed-off-by: Juan J. Alvarez <jjalvare@linux.vnet.ibm.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Russell Currey <ruscur@russell.cc>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Add EEH platform operations for pseries to update VF config space.
With this change after EEH, the VF will have updated config space for
pseries platform.
Signed-off-by: Bryant G. Ly <bryantly@linux.vnet.ibm.com>
Signed-off-by: Juan J. Alvarez <jjalvare@linux.vnet.ibm.com>
Acked-by: Russell Currey <ruscur@russell.cc>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Group together the calls to alloc_vmcs and loaded_vmcs_init. Soon we'll also
allocate an MSR bitmap there.
Cc: stable@vger.kernel.org # prereq for Spectre mitigation
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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The potential performance advantages of a vmcs02 pool have never been
realized. To simplify the code, eliminate the pool. Instead, a single
vmcs02 is allocated per VCPU when the VCPU enters VMX operation.
Cc: stable@vger.kernel.org # prereq for Spectre mitigation
Signed-off-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Mark Kanda <mark.kanda@oracle.com>
Reviewed-by: Ameya More <ameya.more@oracle.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
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* clk-remove-asm-clkdev:
clk: Move __clk_{get,put}() into private clk.h API
clk: sunxi: Use CLK_IS_CRITICAL flag for critical clks
arch: Remove clkdev.h asm-generic from Kbuild
clk: Prepare to remove asm-generic/clkdev.h
blackfin: Use generic clkdev.h header
* clk-debugfs-fixes:
clk: Simplify debugfs registration
clk: Fix debugfs_create_*() usage
clk: Show symbolic clock flags in debugfs
clk: Improve flags doc for of_clk_detect_critical()
* clk-renesas:
clk: renesas: r8a7796: Add FDP clock
clk: renesas: cpg-mssr: Keep wakeup sources active during system suspend
clk: renesas: mstp: Keep wakeup sources active during system suspend
clk: renesas: r8a77970: Add LVDS clock
* clk-meson:
clk: meson-axg: fix potential NULL dereference in axg_clkc_probe()
clk: meson-axg: make local symbol axg_gp0_params_table static
clk: meson-axg: fix return value check in axg_clkc_probe()
clk: meson: mpll: use 64-bit maths in params_from_rate
clk: meson-axg: add clock controller drivers
clk: meson-axg: add clocks dt-bindings required header
dt-bindings: clock: add compatible variant for the Meson-AXG
clk: meson: make the spinlock naming more specific
clk: meson: gxbb: remove IGNORE_UNUSED from mmc clocks
clk: meson: gxbb: fix wrong clock for SARADC/SANA
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Since we've changed div/mod exception handling for src_reg in
eBPF verifier itself, remove the leftovers from arm32 JIT.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: Shubham Bansal <illusionist.neo@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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The verifier in both cBPF and eBPF reject div/mod by 0 imm,
so this can never load. Remove emitting such test and reject
it from being JITed instead (the latter is actually also not
needed, but given practice in sparc64, ppc64 today, so
doesn't hurt to add it here either).
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: David Daney <david.daney@cavium.com>
Reviewed-by: David Daney <david.daney@cavium.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Since we've changed div/mod exception handling for src_reg in
eBPF verifier itself, remove the leftovers from mips64 JIT.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: David Daney <david.daney@cavium.com>
Reviewed-by: David Daney <david.daney@cavium.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Since we've changed div/mod exception handling for src_reg in
eBPF verifier itself, remove the leftovers from sparc64 JIT.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
|
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Since we've changed div/mod exception handling for src_reg in
eBPF verifier itself, remove the leftovers from ppc64 JIT.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Since we've changed div/mod exception handling for src_reg in
eBPF verifier itself, remove the leftovers from s390x JIT.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
|
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Since we've changed div/mod exception handling for src_reg in
eBPF verifier itself, remove the leftovers from arm64 JIT.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
|
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Since we've changed div/mod exception handling for src_reg in
eBPF verifier itself, remove the leftovers from x86_64 JIT.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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In cpu_do_switch_mm(.) with ARM64_SW_TTBR0_PAN=y we apply phys_to_ttbr
to a value that already has an ASID inserted into the upper bits. For
52-bit PA configurations this then can give us TTBR0_EL1 registers that
cause translation table walks to attempt to access non-zero PA[51:48]
spuriously. Ultimately leading to a Synchronous External Abort on level
1 translation.
This patch re-arranges the logic in cpu_do_switch_mm(.) such that
phys_to_ttbr is called before the ASID is inserted into the TTBR0 value.
Fixes: 6b88a32c7af6 ("arm64: kpti: Fix the interaction between ASID switching and software PAN")
Acked-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Tested-by: Kristina Martsenko <kristina.martsenko@arm.com>
Reviewed-by: Kristina Martsenko <kristina.martsenko@arm.com>
Signed-off-by: Steve Capper <steve.capper@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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Pull "SoCFPGA DTS updates for v4.16" from Dinh Nguyen:
- Stratix10 platform updates
- Fix SPI interrupt numbers
- Enable USB
- Disable over-current for Arria10 devkit
* tag 'socfpga_dts_for_v4.16' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux:
arm64: dts: stratix10: fix SPI settings
ARM: dts: socfpga: add i2c reset signals
arm64: dts: stratix10: add USB ECC reset bit
arm64: dts: stratix10: enable USB on the devkit
ARM: dts: socfpga: disable over-current for Arria10 USB devkit
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On a 5-level kernel, if a non-init mm has a top-level entry, it needs to
match init_mm's, but the vmalloc_fault() code skipped over the BUG_ON()
that would have checked it.
While we're at it, get rid of the rather confusing 4-level folded "pgd"
logic.
Cleans-up: b50858ce3e2a ("x86/mm/vmalloc: Add 5-level paging support")
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Neil Berrington <neil.berrington@datacore.com>
Link: https://lkml.kernel.org/r/2ae598f8c279b0a29baf75df207e6f2fdddc0a1b.1516914529.git.luto@kernel.org
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Neil Berrington reported a double-fault on a VM with 768GB of RAM that uses
large amounts of vmalloc space with PTI enabled.
The cause is that load_new_mm_cr3() was never fixed to take the 5-level pgd
folding code into account, so, on a 4-level kernel, the pgd synchronization
logic compiles away to exactly nothing.
Interestingly, the problem doesn't trigger with nopti. I assume this is
because the kernel is mapped with global pages if we boot with nopti. The
sequence of operations when we create a new task is that we first load its
mm while still running on the old stack (which crashes if the old stack is
unmapped in the new mm unless the TLB saves us), then we call
prepare_switch_to(), and then we switch to the new stack.
prepare_switch_to() pokes the new stack directly, which will populate the
mapping through vmalloc_fault(). I assume that we're getting lucky on
non-PTI systems -- the old stack's TLB entry stays alive long enough to
make it all the way through prepare_switch_to() and switch_to() so that we
make it to a valid stack.
Fixes: b50858ce3e2a ("x86/mm/vmalloc: Add 5-level paging support")
Reported-and-tested-by: Neil Berrington <neil.berrington@datacore.com>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Cc: stable@vger.kernel.org
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Link: https://lkml.kernel.org/r/346541c56caed61abbe693d7d2742b4a380c5001.1516914529.git.luto@kernel.org
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Make
[ 0.031118] Spectre V2 mitigation: Mitigation: Full generic retpoline
into
[ 0.031118] Spectre V2: Mitigation: Full generic retpoline
to reduce the mitigation mitigations strings.
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: riel@redhat.com
Cc: ak@linux.intel.com
Cc: peterz@infradead.org
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: jikos@kernel.org
Cc: luto@amacapital.net
Cc: dave.hansen@intel.com
Cc: torvalds@linux-foundation.org
Cc: keescook@google.com
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: tim.c.chen@linux.intel.com
Cc: pjt@google.com
Link: https://lkml.kernel.org/r/20180126121139.31959-5-bp@alien8.de
|
Linus Torvalds
David S. Miller
Josh Poimboeuf
Michael Ellerman
Borislav Petkov
Borislav Petkov
David Woodhouse
Thomas Gleixner
Julia Cartwright
Michael Bringmann
Sukadev Bhattiprolu
Alexey Kardashevskiy
Christophe Leroy
Bryant G. Ly
Paolo Bonzini
Jim Mattson
Stephen Boyd
Daniel Borkmann
Steve Capper
Arnd Bergmann
Andy Lutomirski