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git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev
Pull fbdev fixes and updates from Helge Deller:
"A buch of small fixes and cleanups, including:
- vesafb: Fix a use-after-free due early fb_info cleanup
- clcdfb: Fix refcount leak in clcdfb_of_vram_setup
- hyperv_fb: Allow resolutions with size > 64 MB for Gen1
- pxa3xx-gcu: release the resources correctly in
pxa3xx_gcu_probe/remove()
- omapfb: Prevent compiler warning regarding
hwa742_update_window_async()"
* tag 'for-5.19/fbdev-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev:
video: fbdev: omap: Add prototype for hwa742_update_window_async()
video: fbdev: vesafb: Fix a use-after-free due early fb_info cleanup
video: fbdev: radeon: Fix spelling typo in comment
video: fbdev: xen: remove setting of 'transp' parameter
video: fbdev: pxa3xx-gcu: release the resources correctly in pxa3xx_gcu_probe/remove()
video: fbdev: omapfb: simplify the return expression of nec_8048_connect()
video: fbdev: omapfb: simplify the return expression of dsi_init_pll_data()
video: fbdev: clcdfb: Fix refcount leak in clcdfb_of_vram_setup
video: fbdev: hyperv_fb: Allow resolutions with size > 64 MB for Gen1
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Fix spelling typo in comment.
Signed-off-by: pengfuyuan <pengfuyuan@kylinos.cn>
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 more power management updates from Rafael Wysocki:
"These update the ARM cpufreq drivers and fix up the CPPC cpufreq
driver after recent changes, update the OPP code and PM documentation
and add power sequences support to the system reboot and power off
code.
Specifics:
- Add Tegra234 cpufreq support (Sumit Gupta)
- Clean up and enhance the Mediatek cpufreq driver (Wan Jiabing,
Rex-BC Chen, and Jia-Wei Chang)
- Fix up the CPPC cpufreq driver after recent changes (Zheng Bin,
Pierre Gondois)
- Minor update to dt-binding for Qcom's opp-v2-kryo-cpu (Yassine
Oudjana)
- Use list iterator only inside the list_for_each_entry loop
(Xiaomeng Tong, and Jakob Koschel)
- New APIs related to finding OPP based on interconnect bandwidth
(Krzysztof Kozlowski)
- Fix the missing of_node_put() in _bandwidth_supported() (Dan
Carpenter)
- Cleanups (Krzysztof Kozlowski, and Viresh Kumar)
- Add Out of Band mode description to the intel-speed-select utility
documentation (Srinivas Pandruvada)
- Add power sequences support to the system reboot and power off code
and make related platform-specific changes for multiple platforms
(Dmitry Osipenko, Geert Uytterhoeven)"
* tag 'pm-5.19-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (60 commits)
cpufreq: CPPC: Fix unused-function warning
cpufreq: CPPC: Fix build error without CONFIG_ACPI_CPPC_CPUFREQ_FIE
Documentation: admin-guide: PM: Add Out of Band mode
kernel/reboot: Change registration order of legacy power-off handler
m68k: virt: Switch to new sys-off handler API
kernel/reboot: Add devm_register_restart_handler()
kernel/reboot: Add devm_register_power_off_handler()
soc/tegra: pmc: Use sys-off handler API to power off Nexus 7 properly
reboot: Remove pm_power_off_prepare()
regulator: pfuze100: Use devm_register_sys_off_handler()
ACPI: power: Switch to sys-off handler API
memory: emif: Use kernel_can_power_off()
mips: Use do_kernel_power_off()
ia64: Use do_kernel_power_off()
x86: Use do_kernel_power_off()
sh: Use do_kernel_power_off()
m68k: Switch to new sys-off handler API
powerpc: Use do_kernel_power_off()
xen/x86: Use do_kernel_power_off()
parisc: Use do_kernel_power_off()
...
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Merge system power off handling rework from Dmitry Osipenko for
5.19-rc1.
This introduces a mechanism allowing power sequences to be used for
powering off the system and makes related changes in platform-specific
code for multiple platforms.
* pm-sysoff: (29 commits)
kernel/reboot: Change registration order of legacy power-off handler
m68k: virt: Switch to new sys-off handler API
kernel/reboot: Add devm_register_restart_handler()
kernel/reboot: Add devm_register_power_off_handler()
soc/tegra: pmc: Use sys-off handler API to power off Nexus 7 properly
reboot: Remove pm_power_off_prepare()
regulator: pfuze100: Use devm_register_sys_off_handler()
ACPI: power: Switch to sys-off handler API
memory: emif: Use kernel_can_power_off()
mips: Use do_kernel_power_off()
ia64: Use do_kernel_power_off()
x86: Use do_kernel_power_off()
sh: Use do_kernel_power_off()
m68k: Switch to new sys-off handler API
powerpc: Use do_kernel_power_off()
xen/x86: Use do_kernel_power_off()
parisc: Use do_kernel_power_off()
arm64: Use do_kernel_power_off()
riscv: Use do_kernel_power_off()
csky: Use do_kernel_power_off()
...
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Add devm_register_restart_handler() helper that registers sys-off
handler using restart mode and with a default priority. Most drivers
will want to register restart handler with a default priority, so this
helper will reduce the boilerplate code and make code easier to read and
follow.
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Add devm_register_power_off_handler() helper that registers sys-off
handler using power-off mode and with a default priority. Most drivers
will want to register power-off handler with a default priority, so this
helper will reduce the boilerplate code and make code easier to read and
follow.
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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All pm_power_off_prepare() users were converted to sys-off handler API.
Remove the obsolete global callback variable.
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Add platform-level registration helpers that will ease transition of the
arch/platform power-off callbacks to the new sys-off based API, allowing
us to remove the global pm_power_off variable in the future.
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Add kernel_can_power_off() helper that replaces open-coded checks of
the global pm_power_off variable. This is a necessary step towards
supporting chained power-off handlers.
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Add do_kernel_power_off() helper that will remove open-coded pm_power_off
invocations from the architecture code. This is the first step on the way
to remove the global pm_power_off variable, which will allow us to
implement consistent power-off chaining support.
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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In order to support power-off chaining we need to get rid of the global
pm_* variables, replacing them with the new kernel API functions that
support chaining.
Introduce new generic sys-off handler API that brings the following
features:
1. Power-off and restart handlers are registered using same API function
that supports chaining, hence all power-off and restart modes will
support chaining using this unified function.
2. Prevents notifier priority collisions by disallowing registration of
multiple handlers at the non-default priority level.
3. Supports passing opaque user argument to callback, which allows us to
remove global variables from drivers.
This patch adds support of the following sys-off modes:
- SYS_OFF_MODE_POWER_OFF_PREPARE that replaces global pm_power_off_prepare
variable and provides chaining support for power-off-prepare handlers.
- SYS_OFF_MODE_POWER_OFF that replaces global pm_power_off variable and
provides chaining support for power-off handlers.
- SYS_OFF_MODE_RESTART that provides a better restart API, removing a need
from drivers to have a global scratch variable by utilizing the opaque
callback argument.
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Add variant of blocking/atomic_notifier_chain_register() functions that
allow registration of a notifier only if it has unique priority, otherwise
-EBUSY error code is returned by the new functions.
Reviewed-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Add atomic_notifier_call_chain_is_empty() that returns true if given
atomic call chain is empty.
The first user of this new notifier API function will be the kernel
power-off core code that will support power-off call chains. The core
code will need to check whether there is a power-off handler registered
at all in order to decide whether to halt machine or power it off.
Reviewed-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm
Pull OPP (Operating Performance Points) updates for 5.19-rc1 from Viresh
Kumar:
- Minor update to dt-binding for Qcom's opp-v2-kryo-cpu (Yassine
Oudjana).
- Use list iterator only inside the list_for_each_entry loop (Xiaomeng
Tong, and Jakob Koschel).
- New APIs related to finding OPP based on interconnect bandwidth
(Krzysztof Kozlowski).
- Fix the missing of_node_put() in _bandwidth_supported() (Dan
Carpenter).
- Cleanups (Krzysztof Kozlowski, and Viresh Kumar).
* tag 'opp-updates-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm:
opp: Reorder definition of ceil/floor helpers
opp: Add apis to retrieve opps with interconnect bandwidth
dt-bindings: opp: opp-v2-kryo-cpu: Remove SMEM
opp: use list iterator only inside the loop
opp: replace usage of found with dedicated list iterator variable
PM: opp: simplify with dev_err_probe()
OPP: call of_node_put() on error path in _bandwidth_supported()
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Reorder the helpers to keep all freq specific ones, followed by level
and bw.
No functional change.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
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Add dev_pm_opp_find_bw_ceil and dev_pm_opp_find_bw_floor to retrieve opps
based on interconnect associated with the opp and bandwidth. The index
variable is the index of the interconnect as specified in the opp table
in Devicetree.
Co-developed-by: Thara Gopinath <thara.gopinath@linaro.org>
Signed-off-by: Thara Gopinath <thara.gopinath@linaro.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more ACPI updates from Rafael Wysocki:
"These add some new device IDs, update a few drivers (processor,
battery, backlight) and clean up code in a few places.
Specifics:
- Add Meteor Lake ACPI IDs for DPTF devices (Sumeet Pawnikar)
- Rearrange find_child_checks() to simplify code (Rafael Wysocki)
- Use memremap() to map the UCSI mailbox that is always in main
memory and drop acpi_release_memory() that has no more users
(Heikki Krogerus, Dan Carpenter)
- Make max_cstate/nocst/bm_check_disable processor module parameters
visible in sysfs (Yajun Deng)
- Fix typo in the CPPC driver (Julia Lawall)
- Make the ACPI battery driver show the "not-charging" status by
default unless "charging" or "full" is directly indicated (Werner
Sembach)
- Improve the PM notifier in the ACPI backlight driver (Zhang Rui)
- Clean up some white space in the ACPI code (Ian Cowan)"
* tag 'acpi-5.19-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
usb: typec: ucsi: acpi: fix a NULL vs IS_ERR() check in probe
ACPI: DPTF: Support Meteor Lake
ACPI: CPPC: fix typo in comment
ACPI: video: improve PM notifer callback
ACPI: clean up white space in a few places for consistency
ACPI: glue: Rearrange find_child_checks()
ACPI: processor: idle: Expose max_cstate/nocst/bm_check_disable read-only in sysfs
ACPI: battery: Make "not-charging" the default on no charging or full info
ACPI: OSL: Remove the helper for deactivating memory region
usb: typec: ucsi: acpi: Map the mailbox with memremap()
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Merge general ACPI cleanups and processor support updates for 5.19-rc1:
- Rearrange find_child_checks() to simplify code (Rafael Wysocki).
- Use memremap() to map the UCSI mailbox that is always in main memory
and drop acpi_release_memory() that has no more users (Heikki
Krogerus, Dan Carpenter).
- Make max_cstate/nocst/bm_check_disable processor module parameters
visible in sysfs (Yajun Deng).
- Fix typo in the CPPC driver (Julia Lawall).
* acpi-glue:
ACPI: glue: Rearrange find_child_checks()
* acpi-osl:
usb: typec: ucsi: acpi: fix a NULL vs IS_ERR() check in probe
ACPI: OSL: Remove the helper for deactivating memory region
usb: typec: ucsi: acpi: Map the mailbox with memremap()
* acpi-processor:
ACPI: processor: idle: Expose max_cstate/nocst/bm_check_disable read-only in sysfs
* acpi-cppc:
ACPI: CPPC: fix typo in comment
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There are no more users for acpi_release_memory().
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs
Pull overlayfs updates from Miklos Szeredi:
- Support idmapped layers in overlayfs (Christian Brauner)
- Add a fix to exportfs that is relevant to open_by_handle_at(2) as
well
- Introduce new lookup helpers that allow passing mnt_userns into
inode_permission()
* tag 'ovl-update-5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
ovl: support idmapped layers
ovl: handle idmappings in ovl_xattr_{g,s}et()
ovl: handle idmappings in layer open helpers
ovl: handle idmappings in ovl_permission()
ovl: use ovl_copy_{real,upper}attr() wrappers
ovl: store lower path in ovl_inode
ovl: handle idmappings for layer lookup
ovl: handle idmappings for layer fileattrs
ovl: use ovl_path_getxattr() wrapper
ovl: use ovl_lookup_upper() wrapper
ovl: use ovl_do_notify_change() wrapper
ovl: pass layer mnt to ovl_open_realfile()
ovl: pass ofs to setattr operations
ovl: handle idmappings in creation operations
ovl: add ovl_upper_mnt_userns() wrapper
ovl: pass ofs to creation operations
ovl: use wrappers to all vfs_*xattr() calls
exportfs: support idmapped mounts
fs: add two trivial lookup helpers
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Similar to the addition of lookup_one() add a version of
lookup_one_unlocked() and lookup_one_positive_unlocked() that take
idmapped mounts into account. This is required to port overlay to
support idmapped base layers.
Cc: <linux-fsdevel@vger.kernel.org>
Tested-by: Giuseppe Scrivano <gscrivan@redhat.com>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Christian Brauner (Microsoft) <brauner@kernel.org>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine
Pull dmaengine updates from Vinod Koul:
"Nothing special, this includes a couple of new device support and new
driver support and bunch of driver updates.
New support:
- Tegra gpcdma driver support
- Qualcomm SM8350, Sm8450 and SC7280 device support
- Renesas RZN1 dma and platform support
Updates:
- stm32 device pause/resume support and updates
- DMA memset ops Documentation and usage clarification
- deprecate '#dma-channels' & '#dma-requests' bindings
- driver updates for stm32, ptdma idsx etc"
* tag 'dmaengine-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (87 commits)
dmaengine: idxd: make idxd_wq_enable() return 0 if wq is already enabled
dmaengine: sun6i: Add support for the D1 variant
dmaengine: sun6i: Add support for 34-bit physical addresses
dmaengine: sun6i: Do not use virt_to_phys
dt-bindings: dma: sun50i-a64: Add compatible for D1
dmaengine: tegra: Remove unused switch case
dmaengine: tegra: Fix uninitialized variable usage
dmaengine: stm32-dma: add device_pause/device_resume support
dmaengine: stm32-dma: rename pm ops before dma pause/resume introduction
dmaengine: stm32-dma: pass DMA_SxSCR value to stm32_dma_handle_chan_done()
dmaengine: stm32-dma: introduce stm32_dma_sg_inc to manage chan->next_sg
dmaengine: stm32-dmamux: avoid reset of dmamux if used by coprocessor
dmaengine: qcom: gpi: Add support for sc7280
dt-bindings: dma: pl330: Add power-domains
dmaengine: stm32-mdma: use dev_dbg on non-busy channel spurious it
dmaengine: stm32-mdma: fix chan initialization in stm32_mdma_irq_handler()
dmaengine: stm32-mdma: remove GISR1 register
dmaengine: ti: deprecate '#dma-channels'
dmaengine: mmp: deprecate '#dma-channels'
dmaengine: pxa: deprecate '#dma-channels' and '#dma-requests'
...
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The dmamux register is located within the system controller.
Without syscon, we need an extra helper in order to give write access to
this register to a dmamux driver.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20220427095653.91804-5-miquel.raynal@bootlin.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Document this function to make clear the expected behavior of the
'value' parameter. It was intended to match the behavior of POSIX memset
as laid out here:
https://lore.kernel.org/dmaengine/YejrA5ZWZ3lTRO%2F1@matsya/
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
Link: https://lore.kernel.org/r/20220301182551.883474-2-benjamin.walker@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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According to lib/idr.c,
The IDA handles its own locking. It is safe to call any of the IDA
functions without synchronisation in your code.
so the 'chan_mutex' mutex can just be removed.
It is here only to protect some ida_alloc()/ida_free() calls.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/7180452c1d77b039e27b6f9418e0e7d9dd33c431.1644140845.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Add additional structure definitions for Intel In-memory Analytics
Accelerator (IAA/IAX). See specification (1) for more details.
1: https://cdrdv2.intel.com/v1/dl/getContent/721858
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/164704100212.1373038.18362680016033557757.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing updates from Steven Rostedt:
"The majority of the changes are for fixes and clean ups.
Notable changes:
- Rework trace event triggers code to be easier to interact with.
- Support for embedding bootconfig with the kernel (as suppose to
having it embedded in initram). This is useful for embedded boards
without initram disks.
- Speed up boot by parallelizing the creation of tracefs files.
- Allow absolute ring buffer timestamps handle timestamps that use
more than 59 bits.
- Added new tracing clock "TAI" (International Atomic Time)
- Have weak functions show up in available_filter_function list as:
__ftrace_invalid_address___<invalid-offset> instead of using the
name of the function before it"
* tag 'trace-v5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (52 commits)
ftrace: Add FTRACE_MCOUNT_MAX_OFFSET to avoid adding weak function
tracing: Fix comments for event_trigger_separate_filter()
x86/traceponit: Fix comment about irq vector tracepoints
x86,tracing: Remove unused headers
ftrace: Clean up hash direct_functions on register failures
tracing: Fix comments of create_filter()
tracing: Disable kcov on trace_preemptirq.c
tracing: Initialize integer variable to prevent garbage return value
ftrace: Fix typo in comment
ftrace: Remove return value of ftrace_arch_modify_*()
tracing: Cleanup code by removing init "char *name"
tracing: Change "char *" string form to "char []"
tracing/timerlat: Do not wakeup the thread if the trace stops at the IRQ
tracing/timerlat: Print stacktrace in the IRQ handler if needed
tracing/timerlat: Notify IRQ new max latency only if stop tracing is set
kprobes: Fix build errors with CONFIG_KRETPROBES=n
tracing: Fix return value of trace_pid_write()
tracing: Fix potential double free in create_var_ref()
tracing: Use strim() to remove whitespace instead of doing it manually
ftrace: Deal with error return code of the ftrace_process_locs() function
...
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All instances of the function ftrace_arch_modify_prepare() and
ftrace_arch_modify_post_process() return zero. There's no point in
checking their return value. Just have them be void functions.
Link: https://lkml.kernel.org/r/20220518023639.4065-1-kunyu@nfschina.com
Signed-off-by: Li kunyu <kunyu@nfschina.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
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Max Filippov reported:
When building kernel with CONFIG_KRETPROBES=n kernel/kprobes.c
compilation fails with the following messages:
kernel/kprobes.c: In function ‘recycle_rp_inst’:
kernel/kprobes.c:1273:32: error: implicit declaration of function
‘get_kretprobe’
kernel/kprobes.c: In function ‘kprobe_flush_task’:
kernel/kprobes.c:1299:35: error: ‘struct task_struct’ has no member
named ‘kretprobe_instances’
This came from the commit d741bf41d7c7 ("kprobes: Remove
kretprobe hash") which introduced get_kretprobe() and
kretprobe_instances member in task_struct when CONFIG_KRETPROBES=y,
but did not make recycle_rp_inst() and kprobe_flush_task()
depending on CONFIG_KRETPORBES.
Since those functions are only used for kretprobe, move those
functions into #ifdef CONFIG_KRETPROBE area.
Link: https://lkml.kernel.org/r/165163539094.74407.3838114721073251225.stgit@devnote2
Reported-by: Max Filippov <jcmvbkbc@gmail.com>
Fixes: d741bf41d7c7 ("kprobes: Remove kretprobe hash")
Cc: "Naveen N . Rao" <naveen.n.rao@linux.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: "David S . Miller" <davem@davemloft.net>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: stable@vger.kernel.org
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Tested-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
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This allows kernel developer to embed a default bootconfig file in
the kernel instead of embedding it in the initrd. This will be good
for who are using the kernel without initrd, or who needs a default
bootconfigs.
This needs to set two kconfigs: CONFIG_BOOT_CONFIG_EMBED=y and set
the file path to CONFIG_BOOT_CONFIG_EMBED_FILE.
Note that you still need 'bootconfig' command line option to load the
embedded bootconfig. Also if you boot using an initrd with a different
bootconfig, the kernel will use the bootconfig in the initrd, instead
of the default bootconfig.
Link: https://lkml.kernel.org/r/164921227943.1090670.14035119557571329218.stgit@devnote2
Cc: Padmanabha Srinivasaiah <treasure4paddy@gmail.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Sami Tolvanen <samitolvanen@google.com>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Linux Kbuild mailing list <linux-kbuild@vger.kernel.org>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
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When building the kernel for arm with the "-mabi=apcs-gnu" option, gcc
will force alignment of all structures and unions to a word boundary
(see also STRUCTURE_SIZE_BOUNDARY and the "-mstructure-size-boundary=XX"
option if you're a gcc person), even when the members of said structures
do not want or need said alignment.
This completely messes up the structure alignment of 'struct edid' on
those targets, because even though all the embedded structures are
marked with "__attribute__((packed))", the unions that contain them are
not.
This was exposed by commit f1e4c916f97f ("drm/edid: add EDID block count
and size helpers"), but the bug is pre-existing. That commit just made
the structure layout problem cause a build failure due to the addition
of the
BUILD_BUG_ON(sizeof(*edid) != EDID_LENGTH);
sanity check in drivers/gpu/drm/drm_edid.c:edid_block_data().
This legacy union alignment should probably not be used in the first
place, but we can fix the layout by adding the packed attribute to the
union entries even when each member is already packed and it shouldn't
matter in a sane build environment.
You can see this issue with a trivial test program:
union {
struct {
char c[5];
};
struct {
char d;
unsigned e;
} __attribute__((packed));
} a = { "1234" };
where building this with a normal "gcc -S" will result in the expected
5-byte size of said union:
.type a, @object
.size a, 5
but with an ARM compiler and the old ABI:
arm-linux-gnu-gcc -mabi=apcs-gnu -mfloat-abi=soft -S t.c
you get
.type a, %object
.size a, 8
instead, because even though each member of the union is packed, the
union itself still gets aligned.
This was reported by Sudip for the spear3xx_defconfig target.
Link: https://lore.kernel.org/lkml/YpCUzStDnSgQLNFN@debian/
Reported-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux
Pull hyperv updates from Wei Liu:
- Harden hv_sock driver (Andrea Parri)
- Harden Hyper-V PCI driver (Andrea Parri)
- Fix multi-MSI for Hyper-V PCI driver (Jeffrey Hugo)
- Fix Hyper-V PCI to reduce boot time (Dexuan Cui)
- Remove code for long EOL'ed Hyper-V versions (Michael Kelley, Saurabh
Sengar)
- Fix balloon driver error handling (Shradha Gupta)
- Fix a typo in vmbus driver (Julia Lawall)
- Ignore vmbus IMC device (Michael Kelley)
- Add a new error message to Hyper-V DRM driver (Saurabh Sengar)
* tag 'hyperv-next-signed-20220528' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: (28 commits)
hv_balloon: Fix balloon_probe() and balloon_remove() error handling
scsi: storvsc: Removing Pre Win8 related logic
Drivers: hv: vmbus: fix typo in comment
PCI: hv: Fix synchronization between channel callback and hv_pci_bus_exit()
PCI: hv: Add validation for untrusted Hyper-V values
PCI: hv: Fix interrupt mapping for multi-MSI
PCI: hv: Reuse existing IRTE allocation in compose_msi_msg()
drm/hyperv: Remove support for Hyper-V 2008 and 2008R2/Win7
video: hyperv_fb: Remove support for Hyper-V 2008 and 2008R2/Win7
scsi: storvsc: Remove support for Hyper-V 2008 and 2008R2/Win7
Drivers: hv: vmbus: Remove support for Hyper-V 2008 and Hyper-V 2008R2/Win7
x86/hyperv: Disable hardlockup detector by default in Hyper-V guests
drm/hyperv: Add error message for fb size greater than allocated
PCI: hv: Do not set PCI_COMMAND_MEMORY to reduce VM boot time
PCI: hv: Fix hv_arch_irq_unmask() for multi-MSI
Drivers: hv: vmbus: Refactor the ring-buffer iterator functions
Drivers: hv: vmbus: Accept hv_sock offers in isolated guests
hv_sock: Add validation for untrusted Hyper-V values
hv_sock: Copy packets sent by Hyper-V out of the ring buffer
hv_sock: Check hv_pkt_iter_first_raw()'s return value
...
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The VMbus driver has special case code for running on the first released
versions of Hyper-V: 2008 and 2008 R2/Windows 7. These versions are now
out of support (except for extended security updates) and lack the
performance features needed for effective production usage of Linux
guests.
Simplify the code by removing the negotiation of the VMbus protocol
versions required for these releases of Hyper-V, and by removing the
special case code for handling these VMbus protocol versions.
Signed-off-by: Michael Kelley <mikelley@microsoft.com>
Reviewed-by: Andrea Parri (Microsoft) <parri.andrea@gmail.com>
Link: https://lore.kernel.org/r/1651509391-2058-2-git-send-email-mikelley@microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
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With no users of hv_pkt_iter_next_raw() and no "external" users of
hv_pkt_iter_first_raw(), the iterator functions can be refactored
and simplified to remove some indirection/code.
Signed-off-by: Andrea Parri (Microsoft) <parri.andrea@gmail.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20220428145107.7878-6-parri.andrea@gmail.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
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So that isolated guests can communicate with the host via hv_sock
channels.
Signed-off-by: Andrea Parri (Microsoft) <parri.andrea@gmail.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20220428145107.7878-5-parri.andrea@gmail.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
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For additional robustness in the face of Hyper-V errors or malicious
behavior, validate all values that originate from packets that Hyper-V
has sent to the guest in the host-to-guest ring buffer. Ensure that
invalid values cannot cause data being copied out of the bounds of the
source buffer in hvs_stream_dequeue().
Signed-off-by: Andrea Parri (Microsoft) <parri.andrea@gmail.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Link: https://lore.kernel.org/r/20220428145107.7878-4-parri.andrea@gmail.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
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To abtract the lock and unlock operations on the requestor spin lock.
The helpers will come in handy in hv_pci.
No functional change.
Suggested-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Andrea Parri (Microsoft) <parri.andrea@gmail.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20220419122325.10078-6-parri.andrea@gmail.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
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The function can be used to retrieve and clear/remove a transation ID
from a channel requestor, provided the memory address corresponding to
the ID equals a specified address. The function, and its 'lockless'
variant __vmbus_request_addr_match(), will be used by hv_pci.
Refactor vmbus_request_addr() to reuse the 'newly' introduced code.
No functional change.
Suggested-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Andrea Parri (Microsoft) <parri.andrea@gmail.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20220419122325.10078-5-parri.andrea@gmail.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
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The function can be used to send a VMbus packet and retrieve the
corresponding transaction ID. It will be used by hv_pci.
No functional change.
Suggested-by: Michael Kelley <mikelley@microsoft.com>
Signed-off-by: Andrea Parri (Microsoft) <parri.andrea@gmail.com>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20220419122325.10078-4-parri.andrea@gmail.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
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Hyper-V may offer an Initial Machine Configuration (IMC) synthetic
device to guest VMs. The device may be used by Windows guests to get
specialization information, such as the hostname. But the device
is not used in Linux and there is no Linux driver, so it is
unsupported.
Currently, the IMC device GUID is not recognized by the VMbus driver,
which results in an "Unknown GUID" error message during boot. Add
the GUID to the list of known but unsupported devices so that the
error message is not generated. Other than avoiding the error message,
there is no change in guest behavior.
Signed-off-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/1649818140-100953-1-git-send-email-mikelley@microsoft.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman:
- Convert to the generic mmap support (ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT)
- Add support for outline-only KASAN with 64-bit Radix MMU (P9 or later)
- Increase SIGSTKSZ and MINSIGSTKSZ and add support for AT_MINSIGSTKSZ
- Enable the DAWR (Data Address Watchpoint) on POWER9 DD2.3 or later
- Drop support for system call instruction emulation
- Many other small features and fixes
Thanks to Alexey Kardashevskiy, Alistair Popple, Andy Shevchenko, Bagas
Sanjaya, Bjorn Helgaas, Bo Liu, Chen Huang, Christophe Leroy, Colin Ian
King, Daniel Axtens, Dwaipayan Ray, Fabiano Rosas, Finn Thain, Frank
Rowand, Fuqian Huang, Guilherme G. Piccoli, Hangyu Hua, Haowen Bai,
Haren Myneni, Hari Bathini, He Ying, Jason Wang, Jiapeng Chong, Jing
Yangyang, Joel Stanley, Julia Lawall, Kajol Jain, Kevin Hao, Krzysztof
Kozlowski, Laurent Dufour, Lv Ruyi, Madhavan Srinivasan, Magali Lemes,
Miaoqian Lin, Minghao Chi, Nathan Chancellor, Naveen N. Rao, Nicholas
Piggin, Oliver O'Halloran, Oscar Salvador, Pali Rohár, Paul Mackerras,
Peng Wu, Qing Wang, Randy Dunlap, Reza Arbab, Russell Currey, Sohaib
Mohamed, Vaibhav Jain, Vasant Hegde, Wang Qing, Wang Wensheng, Xiang
wangx, Xiaomeng Tong, Xu Wang, Yang Guang, Yang Li, Ye Bin, YueHaibing,
Yu Kuai, Zheng Bin, Zou Wei, and Zucheng Zheng.
* tag 'powerpc-5.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (200 commits)
powerpc/64: Include cache.h directly in paca.h
powerpc/64s: Only set HAVE_ARCH_UNMAPPED_AREA when CONFIG_PPC_64S_HASH_MMU is set
powerpc/xics: Include missing header
powerpc/powernv/pci: Drop VF MPS fixup
powerpc/fsl_book3e: Don't set rodata RO too early
powerpc/microwatt: Add mmu bits to device tree
powerpc/powernv/flash: Check OPAL flash calls exist before using
powerpc/powermac: constify device_node in of_irq_parse_oldworld()
powerpc/powermac: add missing g5_phy_disable_cpu1() declaration
selftests/powerpc/pmu: fix spelling mistake "mis-match" -> "mismatch"
powerpc: Enable the DAWR on POWER9 DD2.3 and above
powerpc/64s: Add CPU_FTRS_POWER10 to ALWAYS mask
powerpc/64s: Add CPU_FTRS_POWER9_DD2_2 to CPU_FTRS_ALWAYS mask
powerpc: Fix all occurences of "the the"
selftests/powerpc/pmu/ebb: remove fixed_instruction.S
powerpc/platforms/83xx: Use of_device_get_match_data()
powerpc/eeh: Drop redundant spinlock initialization
powerpc/iommu: Add missing of_node_put in iommu_init_early_dart
powerpc/pseries/vas: Call misc_deregister if sysfs init fails
powerpc/papr_scm: Fix leaking nvdimm_events_map elements
...
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The of_irq_parse_oldworld() does not modify passed device_node so make
it a pointer to const for safety. Drop the extern while modifying the
line.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210924105653.46963-2-krzysztof.kozlowski@canonical.com
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Powerpc needs flags and len to make decision on arch_get_mmap_end().
So add them as parameters to arch_get_mmap_end().
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/b556daabe7d2bdb2361c4d6130280da7c1ba2c14.1649523076.git.christophe.leroy@csgroup.eu
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get_unmapped_area functions
Unlike most architectures, powerpc can only define at runtime
if it is going to use the generic arch_get_unmapped_area() or not.
Today, powerpc has a copy of the generic arch_get_unmapped_area()
because when selection HAVE_ARCH_UNMAPPED_AREA the generic
arch_get_unmapped_area() is not available.
Rename it generic_get_unmapped_area() and make it independent of
HAVE_ARCH_UNMAPPED_AREA.
Do the same for arch_get_unmapped_area_topdown() versus
HAVE_ARCH_UNMAPPED_AREA_TOPDOWN.
Do the same for hugetlb_get_unmapped_area() versus
HAVE_ARCH_HUGETLB_UNMAPPED_AREA.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/77f9d3e592f1c8511df9381aa1c4e754651da4d1.1649523076.git.christophe.leroy@csgroup.eu
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git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control updates from Linus Walleij:
"Pretty big this time. Mostly due to (nice) Renesas refactorings.
Core changes:
- New helpers from Andy such as for_each_gpiochip_node() affecting
both GPIO and pin control, improving a bunch of drivers in the
process.
- Pulled in Marc Zyngiers work to make IRQ chips immutable, and
started to apply fixups on top.
New drivers:
- New driver for Marvell MVEBU 98DX2530.
- New driver for Mediatek MT8195.
- Support Qualcomm PMX65 and PM6125.
- New driver for Qualcomm SC7280 LPASS pin control.
- New driver for Rockchip RK3588.
- New driver for NXP Freescale i.MXRT1170.
- New driver for Mediatek MT6795 Helio X10.
Improvements:
- Several Aspeed G6 cleanups and non-critical fixes.
- Thorought refactoring of some of the ever improving Renesas
drivers.
- Clean up Mediatek MT8192 bindings a bit.
- PWM output and clock monitoring in the Ocelot LAN966x driver.
- Thorough refactoring and cleanup of the Ralink drivers such as
RT2880, RT3883, RT305X, MT7620, MT7621, MT7628 splitting these into
proper sub-drivers"
* tag 'pinctrl-v5.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (161 commits)
pinctrl: apple: Use a raw spinlock for the regmap
pinctrl: berlin: bg4ct: Use devm_platform_*ioremap_resource() APIs
pinctrl: intel: Fix kernel doc format, i.e. add return sections
dt-bindings: pinctrl: qcom: Drop 'maxItems' on 'wakeup-parent'
pinctrl: starfive: Make the irqchip immutable
pinctrl: mediatek: Add pinctrl driver for MT6795 Helio X10
dt-bindings: pinctrl: Add MediaTek MT6795 pinctrl bindings
pinctrl: freescale: Add i.MXRT1170 pinctrl driver support
dt-bindings: pinctrl: add i.MXRT1170 pinctrl Documentation
dt-bindings: pinctrl: rockchip: increase max amount of device functions
dt-bindings: pinctrl: qcom,pmic-gpio: add 'gpio-reserved-ranges'
dt-bindings: pinctrl: qcom,pmic-gpio: add 'input-disable'
dt-bindings: pinctrl: qcom,pmic-gpio: describe gpio-line-names
dt-bindings: pinctrl: qcom,pmic-gpio: fix matching pin config
dt-bindings: pinctrl: qcom,pmic-gpio: document PM8150L and PMM8155AU
pinctrl: qcom: spmi-gpio: Add pm6125 compatible
dt-bindings: pinctrl: qcom-pmic-gpio: Add pm6125 compatible
pinctrl: intel: Drop unused irqchip member in struct intel_pinctrl
pinctrl: intel: make irq_chip immutable
pinctrl: cherryview: Use GPIO chip pointer in chv_gpio_irq_mask_unmask()
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Add devicetree and pinfunc bindings for MediaTek Helio X10 MT6795.
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220517083957.11816-2-angelogioacchino.delregno@collabora.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into devel
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git://git.kernel.org/pub/scm/linux/kernel/git/andy/linux-gpio-intel into devel
intel-gpio for v5.19-1
* Introduce helpers to iterate over GPIO chip nodes and covert some drivers
The following is an automated git shortlog grouped by driver:
gpiolib:
- Introduce a helper to get first GPIO controller node
- Introduce gpiochip_node_count() helper
- Introduce for_each_gpiochip_node() loop helper
pinctrl:
- meson: Replace custom code by gpiochip_node_count() call
- meson: Enable COMPILE_TEST
- meson: Rename REG_* to MESON_REG_*
- armada-37xx: Reuse GPIO fwnode in armada_37xx_irqchip_register()
- armada-37xx: Switch to use fwnode instead of of_node
- samsung: Switch to use for_each_gpiochip_node() helper
- samsung: Drop redundant node parameter in samsung_banks_of_node_get()
- npcm7xx: Switch to use for_each_gpiochip_node() helper
- renesas: rza1: Switch to use for_each_gpiochip_node() helper
- renesas: rza1: Replace custom code by gpiochip_node_count() call
- stm32: Switch to use for_each_gpiochip_node() helper
- stm32: Replace custom code by gpiochip_node_count() call
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Merge in Linux 5.18-rc5 since new code to the STM32 driver
depend in a non-trivial way on the fixes merged in -rc5.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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