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QPIC v1.5 requires using the OP_PAGE_READ_ONFI_READ command, but is missing
the rest of the hardware changes that are currently covered by the QPIC v2
(qpic_version2) check in the driver. Split that into an extra
has_onfi_read_op feature flag so it can be separately enabled.
No functional change.
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
Signed-off-by: Stephan Gerhold <stephan.gerhold@linaro.org>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
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The header itself also includes <linux/types.h> and additional to that
doesn't make use of any symbol defined (transitively) by
<linux/mod_devicetable.h>. Also the .c files that include that header
don't need it (there is no direct include, only via <linux/greybus.h>):
$ git grep -l greybus\\.h | xargs grep -E "\<(acpi_device_id|amba_id|ap_device_id|apr_device_id|auxiliary_device_id|bcma_device_id|ccw_device_id|cdx_device_id|coreboot_device_id|css_device_id|dfl_device_id|dmi_(device|system)_id|eisa_device_id|fsl_mc_device_id|hda_device_id|hid_device_id|hv_vmbus_device_id|i2c_device_id|i3c_device_id|ieee1394_device_id|input_device_id|ipack_device_id|isapnp_device_id|ishtp_device_id|mcb_device_id|mdio_device_id|mei_cl_device_id|mhi_device_id|mips_cdmm_device_id|of_device_id|parisc_device_id|pci_device_id|pci_epf_device_id|pcmcia_device_id|platform_device_id|pnp_(card_)?device_id|rio_device_id|rpmsg_device_id|sdio_device_id|sdw_device_id|serio_device_id|slim_device_id|spi_device_id|spmi_device_id|ssam_device_id|ssb_device_id|tb_service_id|tee_client_device_id|typec_device_id|ulpi_device_id|usb_device_id|vchiq_device_id|virtio_device_id|wmi_device_id|x86_(cpu|device)_id|zorro_device_id|cpu_feature)\>"
drivers/greybus/es2.c:static const struct usb_device_id id_table[] = {
drivers/greybus/es2.c: const struct usb_device_id *id)
drivers/greybus/gb-beagleplay.c:static const struct of_device_id gb_beagleplay_of_match[] = {
drivers/staging/greybus/arche-platform.c:static const struct of_device_id arche_platform_of_match[] = {
drivers/greybus/es2.c includes <linux/usb.h>,
drivers/greybus/gb-beagleplay.c includes <linux/serdev.h> which provides
of_device_id via <linux/device.h>, similar
drivers/staging/greybus/arche-platform.c includes
<linux/platform_device.h> which also provides of_device_id.
So the #include can go away without further adaption.
Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com>
Link: https://patch.msgid.link/80964227feede2d8f1978f13f4219fcf9e63d8d0.1783354012.git.u.kleine-koenig@baylibre.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Implement IOCTL interface for SB-TSI driver to enable userspace access
to TSI register read/write operations through the AMD Advanced Platform
Management Link (APML) protocol.
Add an ioctl command (SBTSI_IOCTL_REG_XFER_CMD) that accepts a register
address, data byte, and direction flag.
The mutex is taken on the ioctl path here; the hwmon path is placed
under the same lock in the next patch, which completes serialization between
the hwmon and ioctl paths.
Reviewed-by: Akshay Gupta <Akshay.Gupta@amd.com>
Signed-off-by: Prathima <Prathima.Lk@amd.com>
Link: https://patch.msgid.link/20260710111642.850022-7-Akshay.Gupta@amd.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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AMD SB-TSI temperature sensors can be accessed over both
I2C and I3C buses depending on the platform configuration.
Extend the SB-TSI driver to support both I2C and I3C bus interfaces
by selecting the appropriate transport based on the probed bus type.
The driver maintains backward compatibility with existing I2C
deployments while enabling support for systems using the I3C bus.
Register both I2C and I3C drivers using module_i3c_i2c_driver() and
update the Kconfig dependency from I2C to I3C_OR_I2C.
Reviewed-by: Akshay Gupta <Akshay.Gupta@amd.com>
Signed-off-by: Prathima <Prathima.Lk@amd.com>
Link: https://patch.msgid.link/20260710111642.850022-6-Akshay.Gupta@amd.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Refactor shared probe procedures into sbtsi_probe_common() to ensure
that I2C and I3C probes focus solely on bus-specific allocation and
device configuration.
The utility function reads the configuration register via sbtsi_xfer(),
initializes ext_range_mode and read_order, assigns the driver data,
and registers the hwmon auxiliary device.
Routing register access through sbtsi_xfer() keeps the probe path
bus-agnostic, so no transfer logic has to be duplicated when SB-TSI over
I3C support is added in a later patch.
Reviewed-by: Akshay Gupta <Akshay.Gupta@amd.com>
Signed-off-by: Prathima <Prathima.Lk@amd.com>
Link: https://patch.msgid.link/20260710111642.850022-5-Akshay.Gupta@amd.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Move the I2C read/write byte operations from the sbtsi hwmon driver into
a common sbtsi_xfer() function in tsi-core.c.
This decouples the hwmon sensor driver from the underlying bus transport,
preparing for I3C support in a subsequent patch.
This patch does not introduce any functional changes. The updates are
limited to code organization/cleanup and should not affect the runtime
behavior of the driver
Reviewed-by: Akshay Gupta <Akshay.Gupta@amd.com>
Signed-off-by: Prathima <Prathima.Lk@amd.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Link: https://patch.msgid.link/20260710111642.850022-4-Akshay.Gupta@amd.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Move SBTSI(Side-Band Temperature Sensor Interface) core functionality out
of the hwmon-only path and into drivers/misc/amd-sbi so it can be reused
by non-hwmon consumers.
I2C probe parsing is moved from drivers/hwmon/sbtsi_temp.c
into drivers/misc/amd-sbi/tsi.c under CONFIG_AMD_SBTSI. The core driver
stores struct sbtsi_data on the bus device and registers an auxiliary
device amd-sbtsi.temp-sensor.<addr> per target.
The current hwmon temp sensor will now require the CONFIG_AMD_SBTSI
configuration as a new dependency.
This split prepares the driver for additional interfaces while keeping
hwmon support in hwmon subsystem on top of common SBTSI core logic.
Add platform dependencies to clarify this driver is intended to run on
the BMC and not on the managed node.
Reviewed-by: Akshay Gupta <Akshay.Gupta@amd.com>
Signed-off-by: Prathima <Prathima.Lk@amd.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Link: https://patch.msgid.link/20260710111642.850022-2-Akshay.Gupta@amd.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The at803x family of devices are subjected to an errata that requires
hard-reseting the PHY upon link change.
That can only work if there's a physical reset line wired to the PHY,
which the driver checks by looking if there's a reset GPIO configured
for the MDIO device.
The reset may however be controlled through a reset controller, which
isn't accounted for in the errata handling.
Besides that, PHY drivers aren't expected to directly access the
mdiodev's resources directly, let's therefore wrap this with a phylib
helper, that uses a similar mdio helper to check for reset existence.
This was found in preparation for bus-level resource management for
better mdio scan support.
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Nicolai Buchwitz <nb@tipi-net.de>
Link: https://patch.msgid.link/20260715101355.88536-1-maxime.chevallier@bootlin.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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'struct dma_descriptor_metadata_ops' in not modified in these drivers.
Constifying these structures moves some data to a read-only section, so
increases overall security, especially when the structure holds some
function pointers.
On a x86_64, with allmodconfig, as an example:
Before:
======
text data bss dec hex filename
120635 21584 64 142283 22bcb drivers/dma/xilinx/xilinx_dma.o
After:
=====
text data bss dec hex filename
120699 21520 64 142283 22bcb drivers/dma/xilinx/xilinx_dma.o
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Sai Sree Kartheek Adivi <s-adivi@ti.com>
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
Reviewed-by: Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>
Link: https://patch.msgid.link/b0a22171f3ed68e156a2fa84383e99c23ec6b2ff.1784037977.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux into char-misc-linus
Dinh writes:
firmware: stratix10-svc: fixes for v7.2
- Fix a memory leak by explicitly using kfree() to match the list-managed lifetime
- Fix FCS SMC call documentation
- Add proper handling of a no response from the SDM
- Fix teardown order of service driver
* tag 'svc_fixes_for_v7.2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux:
firmware: stratix10-svc: fix teardown order in remove to prevent race
firmware: stratix10-svc: handle NO_RESPONSE in async poll
firmware: stratix10-svc: fix FCS SMC call kernel-doc
firmware: stratix10-svc: fix memory leaks and list corruption bugs
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As per 'Designware Cores PCI Express Controller Databook',
Section 7.1 - Overview, HDMA supports 64 Read and 64 Write
channels. Current controller driver supports up to 8 read and
write channels only. In order to utilize all the channels the
controller driver need to have the channel related structs
and variables as per the number of channels supported by IP.
Following changes are made to enable 64 Read / 64 Write
channel support:
o Defined HDMA specific macros to reflect the channel count.
o The count of ll_regions and dt_regions in dw_edma_chip and
dw_edma_pcie_data shall be in accordance to number of read
and write channels.
o In dw_edma_probe() configure the channels as per the channels
of the IP used.
o Changed mask types to u64 for higher channel counts.
Signed-off-by: Devendra K Verma <devendra.verma@amd.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20260713064854.4065262-1-devverma@amd.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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We want to convert the legacy gpio-keys platform device on BCM47XX
boards to use software nodes. To do this properly and allow
referencing the GPIO controller by address rather than relying on
name-based matching (which is being removed from the gpiolib core),
we need to associate the GPIO controller with a software node.
Introduce ssb_gpio_swnode, register it, and associate it with the
gpio_chip.
Assisted-by: Antigravity:gemini-3.5-flash
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Tested-by: Waldemar Brodkorb <wbx@openadk.org>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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We want to convert the legacy gpio-keys platform device on BCM47XX
boards to use software nodes. To do this properly and allow
referencing the GPIO controller by address rather than relying on
name-based matching (which is being removed from the gpiolib core),
we need to associate the GPIO controller with a software node.
Introduce bcma_gpio_swnode, register it if the device does not
already have a firmware node, and associate it with the gpio_chip.
Assisted-by: Antigravity:gemini-3.5-flash
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Tested-by: Waldemar Brodkorb <wbx@openadk.org>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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Add support for responding to Get_Battery_Cap (extended) request with a
a Battery_Capabilities (extended) msg. The requester will request
Battery Cap for a specific battery using an index in Get_Battery_Cap. In
case of failure to identify battery, TCPM shall reply with an
appropriate message indicating so.
As the Battery Cap Data Block size is 9 Bytes (lesser than
MaxExtendedMsgChunkLen of 26B), only a single chunk is required to
complete the AMS.
Support for Battery_Capabilities message is required for sinks that
contain battery as specified in USB PD Rev3.1 v1.8
("Applicability of Data Messages" section).
Signed-off-by: Amit Sunil Dhamne <amitsd@google.com>
Reviewed-by: Badhri Jagan Sridharan <badhri@google.com>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260714-batt-caps-upstream-v1-1-c86f0a7fbbda@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Add support for responding to a Get_Battery_Status request with a
Battery_Status message. The port partner shall request the status of a
port's battery by providing an index in the Get_Battery_Status AMS. In
case of failure to identify the battery, the port shall reply with an
appropriate message indicating so.
Support for Battery_Status message is required for sinks that contain
battery as specified in USB PD Rev3.1 v1.8
("Applicability of Data Messages" section).
Signed-off-by: Amit Sunil Dhamne <amitsd@google.com>
Reviewed-by: Badhri Jagan Sridharan <badhri@google.com>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20260714-batt-status-v5-2-9de4aa900b69@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Add power_supply_get_system_batteries() to allow drivers to obtain
a list of registered battery type power supply references in the
system. Also add power_supply_put_system_batteries() to perform
cleanup after the former function is called.
Signed-off-by: Amit Sunil Dhamne <amitsd@google.com>
Reviewed-by: Hans de Goede <johannes.goede@oss.qualcomm.com>
Link: https://patch.msgid.link/20260714-batt-status-v5-1-9de4aa900b69@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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These two fields back the fallback skb pool that find_skb() uses.
Every helper that touches them lives in netconsole now (refill_skbs,
refill_skbs_work_handler, netconsole_skb_pool_init,
netconsole_skb_pool_flush, find_skb, netcons_skb_pop), so the data
can move alongside its only consumer.
Add skb_pool and refill_wq to struct netconsole_target, drop them
from struct netpoll.
This will save 48-bytes for every netpoll user instance (except
netconsole that will have it in netconsole target struct).
Signed-off-by: Breno Leitao <leitao@debian.org>
Link: https://patch.msgid.link/20260710-netconsole_move_more-v3-7-6f63f76b28bc@debian.org
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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The destination ethernet address is netconsole configuration: no other
netpoll user (bonding, team, vlan, bridge, macvlan, dsa) references
np->remote_mac, only netconsole's ethernet framing and its
configfs/cmdline interface do.
Move it into struct netconsole_target and convert push_eth() to take the
netconsole_target; netconsole_print_banner() and
netconsole_parser_cmdline() already take it. The configfs show/store
handlers and alloc_and_init() reach the field directly.
No functional change; the remote_mac sysfs attribute is unchanged.
Signed-off-by: Breno Leitao <leitao@debian.org>
Link: https://patch.msgid.link/20260710-netconsole_move_more-v3-9-6f63f76b28bc@debian.org
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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skb_pool_flush() has no callers left in net/core/netpoll.c after
netconsole took over the pool lifecycle. Inline its body into
netconsole_skb_pool_flush() (the only caller) and drop the function
and its export from netpoll. The prototype goes from
<linux/netpoll.h>.
Pure code motion: cancel_work_sync() + skb_queue_purge_reason()
semantics are unchanged.
Signed-off-by: Breno Leitao <leitao@debian.org>
Link: https://patch.msgid.link/20260710-netconsole_move_more-v3-6-6f63f76b28bc@debian.org
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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netconsole_target
The source and destination UDP ports live in struct netpoll but are
netconsole configuration. No other netpoll user (bonding, team, vlan,
bridge, macvlan, dsa) touches np->local_port or np->remote_port; they
only use the netpoll TX/forwarding path. Only netconsole's UDP framing
and its configfs/cmdline interface read these fields.
Move both into struct netconsole_target and convert the three helpers
that read them - push_udp(), netconsole_print_banner() and
netconsole_parser_cmdline() - to take the netconsole_target. The
configfs show/store handlers already have the target in hand.
No functional change; the local_port / remote_port sysfs attributes are
unchanged.
Signed-off-by: Breno Leitao <leitao@debian.org>
Link: https://patch.msgid.link/20260710-netconsole_move_more-v3-8-6f63f76b28bc@debian.org
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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refill_skbs() is now only called from netconsole (directly via
netconsole_skb_pool_init() and indirectly via the just-moved
refill_skbs_work_handler()), and the MAX_UDP_CHUNK / MAX_SKBS /
MAX_SKB_SIZE macros are private to it. Move them all into
drivers/net/netconsole.c.
MAX_UDP_CHUNK and MAX_SKB_SIZE were promoted to <linux/netpoll.h>
by commit 6c537b845c99 ("netconsole: do not dequeue pooled skbs that
cannot satisfy len") so find_skb() could detect oversized requests
against the same value refill_skbs() used. With both functions now
local to netconsole, the shared definition no longer needs to live
in the header.
Pure code motion: bodies and pool sizing semantics are unchanged.
Signed-off-by: Breno Leitao <leitao@debian.org>
Link: https://patch.msgid.link/20260710-netconsole_move_more-v3-5-6f63f76b28bc@debian.org
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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The work handler is wired via INIT_WORK() in
netconsole_skb_pool_init() and has no other callers since the
previous patch took the skb pool lifecycle out of __netpoll_setup().
Move the function body into drivers/net/netconsole.c as a
file-static helper, drop EXPORT_SYMBOL_GPL() and remove the
prototype from <linux/netpoll.h>.
Pure code motion: the body is unchanged and still calls the
exported refill_skbs() in net/core/netpoll.c.
Signed-off-by: Breno Leitao <leitao@debian.org>
Link: https://patch.msgid.link/20260710-netconsole_move_more-v3-4-6f63f76b28bc@debian.org
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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These three helpers manage the per-netpoll fallback skb pool. They
are file-static today because all of their callers live in
net/core/netpoll.c. Subsequent patches relocate the pool's owner
from struct netpoll to the only consumer that actually uses it
(netconsole), and that work needs netconsole to drive the helpers
directly while the function bodies still live here.
Drop static, add prototypes in <linux/netpoll.h>, and
EXPORT_SYMBOL_GPL() each. No behaviour change.
The exports are transitional. Each helper is moved into
drivers/net/netconsole.c later in this series, and at that point
its EXPORT_SYMBOL_GPL() and prototype are dropped. By the end of
the series no symbol introduced here remains exported.
The goal of this patch is to make the subsequente patches easy to
review.
Signed-off-by: Breno Leitao <leitao@debian.org>
Link: https://patch.msgid.link/20260710-netconsole_move_more-v3-2-6f63f76b28bc@debian.org
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Add a "strict" argument to acpi_processor_extract_lpi_info() that, when
set, will cause it to ignore _LPI states without minimum residency or
wake latency instead of assuming 10 us values for these parameters.
No intentional functional impact.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Sudeep Holla <sudeep.holla@kernel.org>
Acked-by: Huisong Li <lihuisong@huawei.com>
Link: https://patch.msgid.link/3896986.MHq7AAxBmi@rafael.j.wysocki
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In preparation for adding ACPI _LPI support to the intel_idle driver,
move acpi_processor_extract_lpi_info() along with some static functions
used by it to the acpi_processor.c file containing the non-modular part
of the ACPI processor driver, so it can be called by external non-modular
code like intel_idle.
However, export it to modules in the ACPI_PROCESSOR_IDLE import
namespace so that the modular part of the ACPI processor driver
can still invoke it.
No intentional functional impact.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Sudeep Holla <sudeep.holla@kernel.org>
Acked-by: Huisong Li <lihuisong@huawei.com>
Link: https://patch.msgid.link/2277662.Mh6RI2rZIc@rafael.j.wysocki
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Make the base registration function for fixed-factor clocks public and
re-implement the various registration functions that are a direct call
to __clk_hw_register_fixed_factor() as macros.
This is similar to how the registration functions of divider, mux and
other clocks are implemented.
Add a new macro clk_hw_register_fixed_factor_pdata() to register
a fixed-factor clock with its parent clock passed as a struct
clk_parent_data.
Reviewed-by: Brian Masney <bmasney@redhat.com>
Signed-off-by: Benoît Monin <benoit.monin@bootlin.com>
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The SWIOTLB bounce buffer pool size is hardcoded at 64 MB via
IO_TLB_DEFAULT_SIZE with no compile-time knob to adjust it. On
memory-constrained embedded or mobile platforms equipped with a
hardware IOMMU (e.g., ARM SMMU) covering most DMA-capable devices,
reserving 64 MB at boot is unnecessarily wasteful — the SWIOTLB is
only exercised for devices that bypass the IOMMU or have restricted
DMA address ranges.
Introduce CONFIG_SWIOTLB_DEFAULT_SIZE_MB, an integer Kconfig option
(range 1–64 MB, default 64) that allows platforms to set a smaller
compile-time default. IO_TLB_DEFAULT_SIZE is updated to derive from
this value when CONFIG_SWIOTLB is enabled, preserving the existing
64 MB default when the option is not configured.
The runtime "swiotlb=<nslabs>" kernel parameter override remains
fully supported and takes precedence over the compile-time default.
Signed-off-by: Jagadeesh Pagadala <jpagadal@qti.qualcomm.com>
Signed-off-by: Bibek Kumar Patro <bibek.patro@oss.qualcomm.com>
Reviewed-by: Michael Kelley <mhklinux@outlook.com>
Link: https://lore.kernel.org/r/20260702-swiotlb-v2-1-9205f3ba5408@oss.qualcomm.com
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
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Technically it is fine (on all current Linux architectures) to store a
pointer in an unsigned long variable. However this needs explicit casting
which is an easy source for type mismatches.
By replacing the plain unsigned long .driver_data in struct zorro_device_id
by an anonymous union, most of the casting can be dropped. There is still
some implicit casting involved (between a void * and a driver specific
pointer type), but that's better than the approach to store a pointer in an
unsigned long variable as this doesn't lose the information that the data
being pointed to is const.
All users of struct zorro_device_id are initialized in a way that is
compatible with the new definition, so no adaptions are needed there.
Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Max Staudt <max@enpas.org>
Acked-by: Helge Deller <deller@gmx.de>
Link: https://patch.msgid.link/49576a7501128c93ef318566ed7faefce163f1fd.1779803053.git.u.kleine-koenig@baylibre.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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A kfunc marked with KF_IMPLICIT_ARGS flag takes implicit arguments
(such as bpf_prog_aux) that the verifier injects at load time.
resolve_btfids strips those from the kfunc's BTF-visible prototype and
keeps the real kernel ABI in a counterpart _impl prototype [1].
fentry/fexit/fmod_ret/fsession programs may attach to the BPF kernel
functions, including those with implicit args. However
bpf_check_attach_target() and bpf_check_attach_btf_id_multi() extract
the struct btf_func_model from the wrong BTF prototype of the
kfunc. The btf_func_model is later read to construct the trampoline,
which then causes the injected implicit argument to be clobbered and
the kfunc dereferencing garbage.
Add btf_attach_func_proto() to resolve the real ABI prototype of the
kfunc the way the call site does: by looking up the _impl prototype
for a KF_IMPLICIT_ARGS kfunc. Use it at both attach-target model
construction sites.
To enable this, make two supporting changes:
* pass bpf_verifier_log instead of bpf_verifier_env to
find_kfunc_impl_proto(), so it can be reused from the attach path
* add btf_kfunc_check_flag() to test a flag across all of a kfunc's
hook sets, because a program attaching to a kfunc is not in the
kfunc's call-set
KF_IMPLICIT_ARGS must be consistent across the sets, so
btf_kfunc_check_flag() returns -EINVAL on inconsistency.
btf_kfunc_check_flag() reads the kfunc's flags from the target's
kfunc_set_tab. For a module BTF that table is stable only after the
module is live, so take a module reference around the read, mirroring
how the kfunc call path gates the same lookup with btf_try_get_module().
The remaining call sites of btf_distill_func_proto() are safe as
is. The BPF_TRACE_ITER case distills a registered iterator's
prototype, and bpf_struct_ops_desc_init() distills the
function-pointer members of a struct_ops type. Neither is a kfunc, and
so can't have implicit arguments.
[1] https://lore.kernel.org/all/20260120222638.3976562-1-ihor.solodrai@linux.dev/
Fixes: 64e1360524b9 ("bpf: Verifier support for KF_IMPLICIT_ARGS")
Reported-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev>
Link: https://github.com/sched-ext/scx/issues/3687#issuecomment-4906694106
Link: https://patch.msgid.link/20260713235223.1639022-2-ihor.solodrai@linux.dev
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
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This adds:
- misc_parameters_6, containing a few fields for matching PSP headers.
As this is the last misc_parameters field defined, retire the old
optimization added in commit [1] to not touch the reserved part.
- PSP decap action.
- PSP SPI header field pointer.
[1] commit 667cb65ae5ad ("net/mlx5: Don't store reserved part in FTEs
and FGs")
Signed-off-by: Cosmin Ratiu <cratiu@nvidia.com>
Reviewed-by: Dragos Tatulea <dtatulea@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20260713084320.1015240-3-tariqt@nvidia.com
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
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esw_manager_vport_number{,_valid} and merged_eswitch were read through a
separate mlx5_ifc_esw_cap_bits struct, but these bits live in the
e-switch capability that mlx5_ifc_e_switch_cap_bits already describes
(both overlay the same QUERY_HCA_CAP op_mod 0x9 output).
Add esw_manager_vport_number{,_valid} to mlx5_ifc_e_switch_cap_bits at
the same offsets, drop the redundant mlx5_ifc_esw_cap_bits and its
hca_cap_union member, and switch the only user (hws/cmd.c) to
capability.e_switch_cap.
Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20260713084320.1015240-2-tariqt@nvidia.com
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
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smp_call_function_many_cond() uses the per-CPU cfd->cpumask as the list
of remote CPUs to wait for. That is safe while the caller remains pinned
to the current CPU for the whole operation, because another task cannot
run on the same CPU and reuse the per-CPU mask.
The synchronous wait is the long-latency part of the operation. To make
that wait preemptible, the mask iterated by csd_lock_wait() must remain
stable even if the task is preempted or migrates. If the wait used the
per-CPU cfd->cpumask after dropping CPU pinning, another task scheduled
on the original CPU could enter smp_call_function_many_cond() and
overwrite the mask while the first task is still iterating it.
Give each task private IPI cpumask storage and use it as the wait mask in
smp_call_function_many_cond(). Other cpumask storage choices do not fit
this use case:
- Per-CPU storage is the state that becomes unsafe once the wait is
made preemptible. After the caller drops CPU pinning, another task
scheduled on the original CPU can enter smp_call_function_many_cond()
and reuse the same per-CPU mask.
- Stack storage is not suitable for large NR_CPUS or
CONFIG_CPUMASK_OFFSTACK=y configurations. The wait mask needs to
scale with cpumask_size(), and putting that storage on the stack is
not acceptable on large systems.
- Allocating the mask inside smp_call_function_many_cond() would put an
allocation and a failure path in the generic IPI path. A sleeping
allocation is not suitable because callers have historically only
provided a preempt-disabled context, not a sleepable one. GFP_ATOMIC
would avoid sleeping, but a failure fallback would make the latency
improvement opportunistic instead of guaranteed.
The users are not limited to a small, pre-identifiable class of tasks. On
x86, ordinary tasks can reach this path through TLB flushes during exit,
unmap and reclaim, so allocating the mask only for a known subset of
tasks is not straightforward.
The memory cost is explicit: one word is added to task_struct. When
cpumask_size() fits in that word, the mask is stored inline and no
separate allocation is needed. Larger systems allocate cpumask_size() per
task; on x86-64 NR_CPUS=8192 this is 1 KiB per task. For context,
x86 already carries several KiB of per-task architecture and FPU state,
depending on the enabled features and configuration. That does not make
the extra cpumask free, but it puts the large-NR_CPUS case in
perspective.
Signed-off-by: Chuyi Zhou <zhouchuyi@bytedance.com>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Tested-by: Paul E. McKenney <paulmck@kernel.org>
Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Link: https://patch.msgid.link/20260709122933.4021501-5-zhouchuyi@bytedance.com
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smp_call_function_any() disables preemption across the entire operation:
selecting a target CPU, enqueueing the IPI, and synchronously waiting for
the remote CPU. smp_call_function_single() already re-enables preemption
before the synchronous csd_lock_wait(), so callers of
smp_call_function_any() should benefit from the same shorter
preemption-disabled section.
Simply removing get_cpu() and put_cpu() from smp_call_function_any()
would leave the preemption disablement entirely to
smp_call_function_single(). That opens a preemption window between
selecting the remote CPU, for example via sched_numa_find_nth_cpu(), and
dispatching the IPI in smp_call_function_single(). If the selected CPU is
fully offlined in that window, smp_call_function_single() fails its
cpu_online() check and returns -ENXIO to the caller, violating the
guarantee that smp_call_function_any() executes on any online CPU in the
mask.
Move the remote CPU selection into a common
__smp_call_function_single() helper. Keep the target CPU selection and
IPI dispatch within the same preemption-disabled region, while still
allowing the wait path to use the shorter preemption-disabled section
provided by smp_call_function_single().
Signed-off-by: Chuyi Zhou <zhouchuyi@bytedance.com>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Tested-by: Paul E. McKenney <paulmck@kernel.org>
Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Link: https://patch.msgid.link/20260709122933.4021501-4-zhouchuyi@bytedance.com
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Following the sale of PEAK-System France by HMS-Networks, this update is
intended to change all my @hms-networks.com email addresses to my new
@peak-system.fr address.
Signed-off-by: Stéphane Grosjean <s.grosjean@peak-system.fr>
Link: https://patch.msgid.link/20260410124251.40506-1-stephane.grosjean@free.fr
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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This is needed by rust/helpers/srcu.c which now adds
rust_helper_srcu_readers_active() as a wrapper around the SRCU helper
for Rust callers.
To achive this:
1- Move the srcu_readers_active() implementation from
"kernel/rcu/srcutree.c" to "include/linux/srcutree.h".
2- Implement a matching srcu_readers_active() in
"include/linux/srcutiny.h" and use it on the existing open-coded
WARN_ON() check in cleanup_srcu_struct().
Signed-off-by: Onur Özkan <work@onurozkan.dev>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Boqun Feng <boqun@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
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Restructure the SRCU initialization functions so it always follows
one direction:
init_srcu_struct() -> __init_srcu_struct() -> lockdep or generic
This uses the same wrapper style as mutex. It avoids the old confusing
style where init_srcu_struct() and __init_srcu_struct() called each
other in different configs. It also helps Rust side to have simpler
helper for SRCU initialization.
Signed-off-by: Onur Özkan <work@onurozkan.dev>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Boqun Feng <boqun@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
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For rproc that doing attach, rproc_start_subdevices() is called only when
attach successfully. If rproc_report_crash() is called in the attach
function, rproc_boot_recovery()->rproc_stop()->rproc_stop_subdevices()->
glink_subdev_stop() could be called and cause NULL pointer dereference:
Unable to handle kernel NULL pointer dereference at virtual address 0000000000000300
Mem abort info:
...
pc : qcom_glink_smem_unregister+0x14/0x48 [qcom_glink_smem]
lr : glink_subdev_stop+0x1c/0x30 [qcom_common]
...
Call trace:
qcom_glink_smem_unregister+0x14/0x48 [qcom_glink_smem] (P)
glink_subdev_stop+0x1c/0x30 [qcom_common]
rproc_stop+0x58/0x17c
rproc_trigger_recovery+0xb0/0x150
rproc_crash_handler_work+0xa4/0xc4
process_scheduled_works+0x18c/0x2d8
worker_thread+0x144/0x280
kthread+0x124/0x138
ret_from_fork+0x10/0x20
Code: a9be7bfd 910003fd a90153f3 aa0003f3 (b9430000)
---[ end trace 0000000000000000 ]---
Introduce "subdevs_started" flag to indicate rproc_start_subdevices() has
been called successfully. Ensure subdevices are only stopped if they have
been started.
Signed-off-by: Jingyi Wang <jingyi.wang@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260623-rproc-attach-issue-v3-2-8e24310707ce@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
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schedule_work()
Unlike the remoteproc firmware load path where rproc_add() call
rproc_auto_boot_callback() asynchronously and ignores the return value of
rproc_boot(), the attach path calls rproc_boot() synchronously and
propagates its return value back to rproc_add(). This means a failure
during rproc_attach() causes rproc_add() to fail and triggers resource
release, removing the remoteproc from sysfs and making it unavailable for
recovery or further boot attempts.
Align the remoteproc attach path with the firmware load path by
introducing attach_work and scheduling rproc_boot() asynchronously via
schedule_work(). This keeps the remoteproc registered and available in
sysfs even if the initial attach attempt fails, and avoids blocking
rproc_add() on the attach result.
Signed-off-by: Jingyi Wang <jingyi.wang@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260623-rproc-attach-issue-v3-1-8e24310707ce@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
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Newer VMD with device ID 0x28C1 has unique settings compared to its
predecessor where BIOS enumerates the entire VMD device tree and assigns
respective configurations.
VMD configuration BAR0 carries over from GNR legacy VMD as the mechanism
to access the configuration space of the devices owned by VMD. The size
of this window is fixed at 256 MB, where each function consumes 4 KB and
every bus consumes 1 MB.
The shadow and scratchpad registers have been relocated from the VMD
configuration space to the VMD MMIO space in VMD BAR4/BAR5, otherwise
refers to as MEMBAR2 or MSI-X bar.
VMD MSI-X remapping enable/disable is no longer supported.
On this new device, simply obtain the bus hide range and shadow register
values set by BIOS and perform a bus scan.
Also refactor vmd_enable_domain().
Signed-off-by: Nirmal Patel <nirmal.patel@linux.intel.com>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20260629165025.268836-1-nirmal.patel@linux.intel.com
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In some cases, the processor may not actually stick to the "desired"
performance level programmed through the driver's .adjust_perf()
callback and may go above it, which may not be desirable (for instance,
there may be a UCLAMP_MAX limit set for the task currently running on
the given CPU which should be respected).
Address that by adjusting the .adjust_perf() callback to take an
additional argument, max_perf, representing the maximum allowed
performance level of the CPU and update the intel_pstate driver to
take that argument into account as appropriate.
Accordingly, adjust cpufreq_driver_adjust_perf() and the other existing
user of .adjust_perf(), which is the amd-pstate driver (but the behavior
of that driver is not changed).
While at it, also update the cpufreq_driver_adjust_perf()
documentation to reflect this change and some previous code
changes that have not been taken into account in it.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Zhongqiu Han <zhongqiu.han@oss.qualcomm.com>
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Link: https://patch.msgid.link/6277654.lOV4Wx5bFT@rafael.j.wysocki
[ rjw: Adjusted Rust function formatting ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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a5b98009f16d ("sched/psi: fix race between file release and pressure write")
made pressure_write() hold cgroup_mutex across psi_trigger_create(), which
forks the psimon kthread for the first rtpoll trigger. As kthread creation
depends on the whole fork path, the commit inadvertently created a lot of
unwanted locking dependencies from cgroup_mutex.
sched_ext got hit by one: its enable path blocks forks and then grabs
cgroup_mutex, so a pressure write racing a scheduler enable deadlocks, with
every other fork piling up behind.
Fix it by splitting trigger creation so that the worker is forked with
cgroup_mutex dropped and the kernfs active reference left broken. The latter
matters because rmdir and cgroup.pressure writes drain active references
under cgroup_mutex. Publishing the trigger last keeps error reporting
synchronous and preserves the of->priv lifetime rules.
The trigger registered in the first stage pins the group's rtpoll machinery
across the unlocked window, leaving only creation races to resolve. The
catch-up poll on installation covers scheduling attempts dropped while there
was no worker.
v2: Retagged sched/psi (was cgroup).
Fixes: a5b98009f16d ("sched/psi: fix race between file release and pressure write")
Cc: stable@vger.kernel.org
Cc: Edward Adam Davis <eadavis@qq.com>
Cc: Chen Ridong <chenridong@huaweicloud.com>
Reported-by: Matt Fleming <mfleming@cloudflare.com>
Closes: https://lore.kernel.org/all/20260710100441.2653477-1-matt@readmodwrite.com/
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Tested-by: Matt Fleming <mfleming@cloudflare.com>
Acked-by: Suren Baghdasaryan <surenb@google.com>
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Thestate CPUHP_AP_ARM_CORESIGHT_CTI_STARTING has become unused since commit
59213b4be5c1 ("coresight: cti: Remove CPU power management code").
Remove it as well.
Signed-off-by: Zenghui Yu <zenghui.yu@linux.dev>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20260711135154.94276-1-zenghui.yu@linux.dev
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The header define in asm/timex,h and the naming of the function to read the
delay timer are confusing at best.
Convert it to a config switch selected by the archictures which provide the
functionality and rename the function to delay_read_timer(), which makes
the purpose clear. Move the declaration to linux/delay.h where it belongs.
Remove the resulting empty asm/timex.h files as well.
No functional change.
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20260410120317.978403520@kernel.org
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git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm64 fixes for 7.2, take #2
- Move locking for kvm_io_bus_get_dev() into the caller, ensuring
race-free checks that the returned object is of the correct type
- Fix initialisation of the page-table walk level when relaxing
permissions
- Correctly update the XN attribute when relaxing permissions
- Fix the sign extension of loads from emulated MMIO regions
- Assorted collection of fixes for pKVM's FFA proxy, together with a
couple of FFA driver adjustments
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tcp_bpf_ioctl() answers SIOCINQ from psock->msg_tot_len, which only
counts bytes in ingress_msg. Without a stream/skb verdict program
nothing is diverted there: data stays in sk_receive_queue, so FIONREAD
returns 0 even though read() returns data.
Add tcp_inq() to the reported value when the psock has no verdict
program. The two queues are disjoint, so bytes redirected into
ingress_msg from other sockets stay correctly accounted through
msg_tot_len.
Remove unused sk_psock_msg_inq().
Fixes: 929e30f93125 ("bpf, sockmap: Fix FIONREAD for sockmap")
Signed-off-by: Mattia Meleleo <mattia.meleleo@coralogix.com>
Reviewed-by: Jiayuan Chen <jiayuan.chen@linux.dev>
Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com>
Reviewed-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20260708-fionread-no-verdict-v3-1-b4ee31b3af53@coralogix.com
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
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Helper and kfunc argument checking carried two separate meta structs: the
verifier-local struct bpf_call_arg_meta and bpf_kfunc_call_arg_meta.
Merge them into a single struct bpf_call_arg_meta. This is groundwork for
sharing argument checking between helpers and kfuncs.
While merging, drop the btf_id field from the helper meta since it is
never used.
No functional change.
Signed-off-by: Amery Hung <ameryhung@gmail.com>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/bpf/20260715064047.1793790-8-ameryhung@gmail.com
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
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The constant "size of the PTR_TO_MEM returned in R0" argument is handled by
both helpers (ARG_CONST_ALLOC_SIZE_OR_ZERO) and kfuncs (__rdonly_buf_size /
__rdwr_buf_size), each with its own meta field (meta->mem_size,
meta->r0_size) and duplicated validation. Add struct arg_alloc_mem_desc
and a shared process_const_alloc_mem_size(), and replace both fields with
meta->arg_alloc_mem.
The desc records presence with a 'found' flag instead of using a non-zero
size as the sentinel. This also fixes a pre-existing bug on the kfunc
return path: "no size argument" was tested as r0_size == 0, so an explicit
__rdonly_buf_size/__rdwr_buf_size of 0 was treated as absent and fell
through to btf_resolve_size(), giving R0 the size of the pointed-to return
type instead of 0. With 'found', an explicit zero size is honored and
btf_resolve_size() is used only when no size argument was passed.
The size is stored in a u32, matching regs[R0].mem_size. The U32_MAX
check now apply to both helper and kfunc through
process_const_alloc_mem_size().
Fold bpf_session_cookie return size assignment into current kfunc return
size resolution path.
Note that verifier saves kfunc return size through r0_size instead of
mem_size. The later has no active readers so remove it.
Signed-off-by: Amery Hung <ameryhung@gmail.com>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/bpf/20260715064047.1793790-5-ameryhung@gmail.com
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
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To prepare for unifying the helper and kfunc call_arg_meta, group the
scattered MEM_UNINIT ("raw") memory argument fields (raw_mode, regno and
access_size) into a new struct arg_raw_mem_desc. The intention is to
make it clear about when these are set and used instead of fields with
overly generic names.
Identify the raw argument once, up front, in check_raw_mode_ok() (like
check_proto_release_reg() does for release_regno), recording its regno.
check_stack_range_initialized() now recognizes the raw buffer by matching
that regno, so the separate raw_mode flag is no longer needed, and the
per-argument "meta->raw_mode = arg_type & MEM_UNINIT" assignments in
check_func_arg() go away with it.
A raw memory argument can be tagged either ARG_PTR_TO_MEM | MEM_UNINIT or
ARG_PTR_TO_MAP_VALUE | MEM_UNINIT (the output buffer of bpf_map_pop_elem()
and bpf_map_peek_elem()). Either may be passed as a PTR_TO_STACK, which
reaches check_stack_range_initialized() through check_helper_mem_access(),
so both must be treated as raw. Extend arg_type_is_raw_mem() to match the
map value case as well; otherwise check_raw_mode_ok() would not record the
regno for it and an uninitialized stack buffer passed to those helpers
would be wrongly rejected for programs without CAP_PERFMON.
No functional change intended. This patch does not enable raw_mode
memory access for kfunc (i.e., uninit stack will not be allowed to be
passed to kfunc for unprivileged programs). Existing kfuncs with arguments
tagged with __uninit are either priviledged or dynptr kfuncs, which take
another path to make sure the access is checked by check_mem_access().
Signed-off-by: Amery Hung <ameryhung@gmail.com>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/bpf/20260715064047.1793790-3-ameryhung@gmail.com
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
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Over time the meaning of HAVE_GENERIC_VDSO has become off.
Today it only controls the availability of the vDSO datastore.
Rename the symbol to match its function.
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@oss.qualcomm.com>
Link: https://patch.msgid.link/20260709-vdso-have_generic_vdso-v1-6-d2e1061f268b@linutronix.de
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The GPIO_LOOKUP_SINGLE() macro defines a lookup table with a single entry
followed by an empty sentinel entry. The sentinel entry has a trailing
comma which is unnecessary. Remove it.
Assisted-by: Antigravity:gemini-3.5-flash
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/alV0wIgZAY_InGYV@google.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
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