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Expose a steering anchor per priority to allow users to re-inject
packets back into default NIC pipeline for additional processing.
MLX5_IB_METHOD_STEERING_ANCHOR_CREATE returns a flow table ID which
a user can use to re-inject packets at a specific priority.
A FTE (flow table entry) can be created and the flow table ID
used as a destination.
When a packet is taken into a RDMA-controlled steering domain (like
software steering) there may be a need to insert the packet back into
the default NIC pipeline. This exposes a flow table ID to the user that can
be used as a destination in a flow table entry.
With this new method priorities that are exposed to users via
MLX5_IB_METHOD_FLOW_MATCHER_CREATE can be reached from a non-zero UID.
As user-created flow tables (via RDMA DEVX) are created with a non-zero UID
thus it's impossible to point to a NIC core flow table (core driver flow tables
are created with UID value of zero) from userspace.
Create flow tables that are exposed to users with the shared UID, this
allows users to point to default NIC flow tables.
Steering loops are prevented at FW level as FW enforces that no flow
table at level X can point to a table at level lower than X.
Link: https://lore.kernel.org/all/20220703205407.110890-6-saeed@kernel.org/
Signed-off-by: Mark Bloch <mbloch@nvidia.com>
Reviewed-by: Yishai Hadas <yishaih@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
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Mark Bloch Says:
================
Expose steering anchor
Expose a steering anchor per priority to allow users to re-inject
packets back into default NIC pipeline for additional processing.
MLX5_IB_METHOD_STEERING_ANCHOR_CREATE returns a flow table ID which
a user can use to re-inject packets at a specific priority.
A FTE (flow table entry) can be created and the flow table ID
used as a destination.
When a packet is taken into a RDMA-controlled steering domain (like
software steering) there may be a need to insert the packet back into
the default NIC pipeline. This exposes a flow table ID to the user that can
be used as a destination in a flow table entry.
With this new method priorities that are exposed to users via
MLX5_IB_METHOD_FLOW_MATCHER_CREATE can be reached from a non-zero UID.
As user-created flow tables (via RDMA DEVX) are created with a non-zero UID
thus it's impossible to point to a NIC core flow table (core driver flow tables
are created with UID value of zero) from userspace.
Create flow tables that are exposed to users with the shared UID, this
allows users to point to default NIC flow tables.
Steering loops are prevented at FW level as FW enforces that no flow
table at level X can point to a table at level lower than X.
================
Link: https://lore.kernel.org/all/20220703205407.110890-1-saeed@kernel.org
Signed-off-by: Leon Romanovsky <leon@kernel.org>
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Fix documentation for bpf_skb_pull_data() helper for
when len == 0.
Fixes: fa15601ab31e ("bpf: add documentation for eBPF helpers (33-41)")
Signed-off-by: Joanne Koong <joannelkoong@gmail.com>
Acked-by: Quentin Monnet <quentin@isovalent.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/r/20220715193800.3940070-1-joannelkoong@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Syzbot found an issue [1]: fq_codel_drop() try to drop a flow whitout any
skbs, that is, the flow->head is null.
The root cause, as the [2] says, is because that bpf_prog_test_run_skb()
run a bpf prog which redirects empty skbs.
So we should determine whether the length of the packet modified by bpf
prog or others like bpf_prog_test is valid before forwarding it directly.
LINK: [1] https://syzkaller.appspot.com/bug?id=0b84da80c2917757915afa89f7738a9d16ec96c5
LINK: [2] https://www.spinics.net/lists/netdev/msg777503.html
Reported-by: syzbot+7a12909485b94426aceb@syzkaller.appspotmail.com
Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com>
Reviewed-by: Stanislav Fomichev <sdf@google.com>
Link: https://lore.kernel.org/r/20220715115559.139691-1-shaozhengchao@huawei.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Instead of open coding a __dynamic_array() with a fixed length (which
defeats the purpose of the dynamic array in the first place). Use the new
__vstring() helper that will use a va_list and only write enough of the
string into the ring buffer that is needed.
Link: https://lkml.kernel.org/r/20220705224750.896553364@goodmis.org
Cc: Bart Van Assche <bvanassche@acm.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
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Instead of open coding a __dynamic_array() with a fixed length (which
defeats the purpose of the dynamic array in the first place). Use the new
__vstring() helper that will use a va_list and only write enough of the
string into the ring buffer that is needed.
Link: https://lkml.kernel.org/r/20220705224750.715763972@goodmis.org
Cc: Fred Herard <fred.herard@oracle.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
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Merge the new SoC support from Tomer Maimon:
"This patchset adds initial support for the Nuvoton
Arbel NPCM8XX Board Management controller (BMC) SoC family.
The Nuvoton Arbel NPCM8XX SoC is a fourth-generation BMC.
The NPCM8XX computing subsystem comprises a quadcore ARM
Cortex A35 ARM-V8 architecture.
This patchset adds minimal architecture and drivers such as:
Clocksource, Clock, Reset, and WD.
Some of the Arbel NPCM8XX peripherals are based on Poleg NPCM7XX.
This patchset was tested on the Arbel NPCM8XX evaluation board."
I'm leaving out the clk controller driver, which is still under
review.
* nuvoton/newsoc:
arm64: defconfig: Add Nuvoton NPCM family support
arm64: dts: nuvoton: Add initial NPCM845 EVB device tree
arm64: dts: nuvoton: Add initial NPCM8XX device tree
arm64: npcm: Add support for Nuvoton NPCM8XX BMC SoC
dt-bindings: arm: npcm: Add nuvoton,npcm845 GCR compatible string
dt-bindings: arm: npcm: Add nuvoton,npcm845 compatible string
dt-bindings: arm: npcm: Add maintainer
reset: npcm: Add NPCM8XX support
dt-bindings: reset: npcm: Add support for NPCM8XX
reset: npcm: using syscon instead of device data
ARM: dts: nuvoton: add reset syscon property
dt-bindings: reset: npcm: add GCR syscon property
dt-binding: clk: npcm845: Add binding for Nuvoton NPCM8XX Clock
dt-bindings: watchdog: npcm: Add npcm845 compatible string
dt-bindings: timer: npcm: Add npcm845 compatible string
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Add binding for the Arbel BMC NPCM8XX Clock controller.
Signed-off-by: Tomer Maimon <tmaimon77@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Add a dedicated helper to handle the setgid bit when creating a new file
in a setgid directory. This is a preparatory patch for moving setgid
stripping into the vfs. The patch contains no functional changes.
Currently the setgid stripping logic is open-coded directly in
inode_init_owner() and the individual filesystems are responsible for
handling setgid inheritance. Since this has proven to be brittle as
evidenced by old issues we uncovered over the last months (see [1] to
[3] below) we will try to move this logic into the vfs.
Link: e014f37db1a2 ("xfs: use setattr_copy to set vfs inode attributes") [1]
Link: 01ea173e103e ("xfs: fix up non-directory creation in SGID directories") [2]
Link: fd84bfdddd16 ("ceph: fix up non-directory creation in SGID directories") [3]
Link: https://lore.kernel.org/r/1657779088-2242-1-git-send-email-xuyang2018.jy@fujitsu.com
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christian Brauner (Microsoft) <brauner@kernel.org>
Reviewed-and-Tested-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Yang Xu <xuyang2018.jy@fujitsu.com>
Signed-off-by: Christian Brauner (Microsoft) <brauner@kernel.org>
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commit 1b870fa5573e ("kvm: stats: tell userspace which values are
boolean") added a new stat unit (boolean) but failed to raise
KVM_STATS_UNIT_MAX.
Fix by pointing UNIT_MAX at the new max value of UNIT_BOOLEAN.
Fixes: 1b870fa5573e ("kvm: stats: tell userspace which values are boolean")
Reported-by: Janis Schoetterl-Glausch <scgl@linux.ibm.com>
Signed-off-by: Oliver Upton <oupton@google.com>
Message-Id: <20220719125229.2934273-1-oupton@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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This reverts commit 28a6ed8e39f77f6ac613ec9b7461aa75e85fa79a.
The chrome platform driver changes need to come in through the platform
tree due to some api changes that showed up there that cause build
errors in linux-next
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Link: https://lore.kernel.org/r/20220719160821.5e68e30b@oak.ozlabs.ibm.com
Cc: Prashant Malani <pmalani@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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* irq/renesas-irqc:
: .
: New Renesas RZ/G2L IRQC driver from Lad Prabhakar, equipped with
: its companion GPIO driver.
: .
dt-bindings: interrupt-controller: renesas,rzg2l-irqc: Document RZ/V2L SoC
gpio: thunderx: Don't directly include asm-generic/msi.h
pinctrl: renesas: pinctrl-rzg2l: Add IRQ domain to handle GPIO interrupt
dt-bindings: pinctrl: renesas,rzg2l-pinctrl: Document the properties to handle GPIO IRQ
gpio: gpiolib: Allow free() callback to be overridden
irqchip: Add RZ/G2L IA55 Interrupt Controller driver
dt-bindings: interrupt-controller: Add Renesas RZ/G2L Interrupt Controller
gpio: Remove dynamic allocation from populate_parent_alloc_arg()
Signed-off-by: Marc Zyngier <maz@kernel.org>
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There are some synchronization issues(amt->status, amt->req_cnt, etc)
if the interface is in gateway mode because gateway message handlers
are processed concurrently.
This applies a work queue for processing these messages instead of
expanding the locking context.
So, the purposes of this patch are to fix exist race conditions and to make
gateway to be able to validate a gateway status more correctly.
When the AMT gateway interface is created, it tries to establish to relay.
The establishment step looks stateless, but it should be managed well.
In order to handle messages in the gateway, it saves the current
status(i.e. AMT_STATUS_XXX).
This patch makes gateway code to be worked with a single thread.
Now, all messages except the multicast are triggered(received or
delay expired), and these messages will be stored in the event
queue(amt->events).
Then, the single worker processes stored messages asynchronously one
by one.
The multicast data message type will be still processed immediately.
Now, amt->lock is only needed to access the event queue(amt->events)
if an interface is the gateway mode.
Fixes: cbc21dc1cfe9 ("amt: add data plane of amt interface")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Add support for the MT6331 PMIC with MT6332 Companion PMIC, found
in MT6795 Helio X10 smartphone platforms.
This combo has support for multiple devices but, for a start,
only the following have been implemented:
- Regulators (two instances, one in MT6331, one in MT6332)
- RTC (MT6331)
- Keys (MT6331)
- Interrupts (MT6331 also dispatches MT6332's interrupts)
There's more to be implemented, especially for MT6332, which
will come at a later stage.
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20220627123954.64299-1-angelogioacchino.delregno@collabora.com
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Change 'receieved' to 'received' and 'recieve' to 'receive'.
Signed-off-by: Zhang Jiaming <jiaming@nfschina.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20220623073333.5675-1-jiaming@nfschina.com
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All implementations return 0, so simplify accordingly.
This is a preparation for making platform remove callbacks return void.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20220619082655.53728-1-u.kleine-koenig@pengutronix.de
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There is no in-tree machine that provides a struct twl4030_platform_data
since commit e92fc4f04a34 ("ARM: OMAP2+: Drop legacy board file for
LDP"). So assume dev_get_platdata() returns NULL in twl_probe() and
simplify accordingly.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20220614152148.252820-1-u.kleine-koenig@pengutronix.de
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MT8195 System Companion Processors(SCP) is a dual-core RISC-V MCU.
Add a new CrOS feature ID to represent the SCP's 2nd core.
The 1st core is referred to as 'core 0', and the 2nd core is referred
to as 'core 1'.
Signed-off-by: Tinghan Shen <tinghan.shen@mediatek.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20220601112201.15510-16-tinghan.shen@mediatek.com
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Add MT6357 PMIC IRQ support.
Signed-off-by: Fabien Parent <fparent@baylibre.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20220531124959.202787-6-fparent@baylibre.com
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Adds support for PMIC keys, Regulator, and RTC for the MT6357 PMIC.
Signed-off-by: Fabien Parent <fparent@baylibre.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20220531124959.202787-5-fparent@baylibre.com
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The driver never calls the disable callback, so drop the member from
the platform struct and all callbacks from the actual platform datas.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20220530192430.2108217-4-u.kleine-koenig@pengutronix.de
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None of the in-tree instantiations of struct t7l66xb_platform_data
provides a disable callback. So better don't dereference this function
pointer unconditionally. As there is no user, drop it completely instead
of calling it conditional.
This is a preparation for making platform remove callbacks return void.
Fixes: 1f192015ca5b ("mfd: driver for the T7L66XB TMIO SoC")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20220530192430.2108217-3-u.kleine-koenig@pengutronix.de
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My Bootlin address is preferred from now on.
Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20220603155727.1232061-4-luca@lucaceresoli.net
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'ib-mfd-edac-i2c-leds-pinctrl-platform-watchdog-5.20' and 'ib-mfd-soc-bcm-5.20' into ibs-for-mfd-merged
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Streaming DMA mappings may be considerably slower when mappings go through
an IOMMU and the total mapping length is somewhat long. This is because the
IOMMU IOVA code allocates and free an IOVA for each mapping, which may
affect performance.
New member Scsi_Host.opt_sectors is added, which is the optimal host
max_sectors, and use this value to cap the request queue max_sectors when
set.
It could be considered to have request queues io_opt value initially
set at Scsi_Host.opt_sectors in __scsi_init_queue(), but that is not
really the purpose of io_opt.
Finally, even though Scsi_Host.opt_sectors value should never be greater
than the request queue max_hw_sectors value, continue to limit to this
value for safety.
Signed-off-by: John Garry <john.garry@huawei.com>
Reviewed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
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This extends the flags that can be used in GPIO specifiers to indicate
that no bias is intended in the pin.
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
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On top of looking at PULL_UP and PULL_DOWN flags, also look at
PULL_DISABLE and set the appropriate GPIO flag. The GPIO core will then
pass down this to controllers that support it.
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
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This change prepares the gpio core to look at firmware flags and set
'FLAG_BIAS_DISABLE' if necessary. It works in similar way to
'GPIO_PULL_DOWN' and 'GPIO_PULL_UP'.
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
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There is no user of these callbacks. The motivation for this change is
to stop returning an error code from the remove callback.
This is a preparation for making platform remove callbacks return void.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
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There is no machine providing a teardown callback, so drop the unused
code.
This is a preparation for making platform remove callbacks return void.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
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The last user, which in fact was a dead code, has gone a year ago,
previous one 3 years ago. On top of that we want to drop away the
legacy GPIO APIs in the kernel, so take a chance to get rid of
unused devm_gpio_free() and accompanying stuff.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
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Add the IOMMU callback for DMA mapping API dma_opt_mapping_size(), which
allows the drivers to know the optimal mapping limit and thus limit the
requested IOVA lengths.
This value is based on the IOVA rcache range limit, as IOVAs allocated
above this limit must always be newly allocated, which may be quite slow.
Signed-off-by: John Garry <john.garry@huawei.com>
Reviewed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Acked-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
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Streaming DMA mapping involving an IOMMU may be much slower for larger
total mapping size. This is because every IOMMU DMA mapping requires an
IOVA to be allocated and freed. IOVA sizes above a certain limit are not
cached, which can have a big impact on DMA mapping performance.
Provide an API for device drivers to know this "optimal" limit, such that
they may try to produce mapping which don't exceed it.
Signed-off-by: John Garry <john.garry@huawei.com>
Reviewed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
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Remove locked versions of functions that are no longer used by anyone.
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Prepare for devlink reload being called with devlink->lock held and
convert the netdevsim driver to use unlocked devlink API during init and
fini flows. Take devl_lock() in reload_down() and reload_up() ops in the
meantime before reload cmd is converted to take the lock itself.
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Add unlocked variants of devlink_region_create/destroy() functions
to be used in drivers called-in with devlink->lock held.
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Add unlocked variants of devlink_dpipe*() functions to be used
in drivers called-in with devlink->lock held.
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Add unlocked variants of devlink_sb*() functions to be used
in drivers called-in with devlink->lock held.
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Add unlocked variants of devlink_resource*() functions to be used
in drivers called-in with devlink->lock held.
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Add unlocked variants of devl_trap*() functions to be used in drivers
called-in with devlink->lock held.
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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We don't want to list every single ubuf_info callback in
skb_orphan_frags(), add a flag controlling the behaviour.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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MSM8909 has the same power domains as MSM8916 so just define them
as aliases for the existing definitions.
Signed-off-by: Stephan Gerhold <stephan.gerhold@kernkonzept.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220705143523.3390944-4-stephan.gerhold@kernkonzept.com
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FSDAX page refcounts are 1-based, rather than 0-based: if refcount is
1, then the page is freed. The FSDAX pages can be pinned through GUP,
then they will be unpinned via unpin_user_page() using a folio variant
to put the page, however, folio variants did not consider this special
case, the result will be to miss a wakeup event (like the user of
__fuse_dax_break_layouts()). This results in a task being permanently
stuck in TASK_INTERRUPTIBLE state.
Since FSDAX pages are only possibly obtained by GUP users, so fix GUP
instead of folio_put() to lower overhead.
Link: https://lkml.kernel.org/r/20220705123532.283-1-songmuchun@bytedance.com
Fixes: d8ddc099c6b3 ("mm/gup: Add gup_put_folio()")
Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Suggested-by: Matthew Wilcox <willy@infradead.org>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: William Kucharski <william.kucharski@oracle.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Jan Kara <jack@suse.cz>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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From VCN4, AMDGPU_HW_IP_VCN_ENC is re-used to support
both encoding and decoding jobs.
Link: https://gitlab.freedesktop.org/mesa/drm/-/merge_requests/245/commits
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Leo Liu <leo.liu@amd.com>
Signed-off-by: Ruijing Dong <ruijing.dong@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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We need the USB fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The ublk protocol has no mechanism to actually transfer the integrity
metadata, so don't define this flag, which requires that an integrity
payload is attached to a bio.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20220718063013.335531-1-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Instead of registering callback to process sensor events right at
initialization time, wait for the sensor to be register in the iio
subsystem.
Events can come at probe time (in case the kernel rebooted abruptly
without switching the sensor off for instance), and be sent to IIO core
before the sensor is fully registered.
Fixes: aa984f1ba4a4 ("iio: cros_ec: Register to cros_ec_sensorhub when EC supports FIFO")
Reported-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20220711144716.642617-1-gwendal@chromium.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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When RDRAND was introduced, there was much discussion on whether it
should be trusted and how the kernel should handle that. Initially, two
mechanisms cropped up, CONFIG_ARCH_RANDOM, a compile time switch, and
"nordrand", a boot-time switch.
Later the thinking evolved. With a properly designed RNG, using RDRAND
values alone won't harm anything, even if the outputs are malicious.
Rather, the issue is whether those values are being *trusted* to be good
or not. And so a new set of options were introduced as the real
ones that people use -- CONFIG_RANDOM_TRUST_CPU and "random.trust_cpu".
With these options, RDRAND is used, but it's not always credited. So in
the worst case, it does nothing, and in the best case, maybe it helps.
Along the way, CONFIG_ARCH_RANDOM's meaning got sort of pulled into the
center and became something certain platforms force-select.
The old options don't really help with much, and it's a bit odd to have
special handling for these instructions when the kernel can deal fine
with the existence or untrusted existence or broken existence or
non-existence of that CPU capability.
Simplify the situation by removing CONFIG_ARCH_RANDOM and using the
ordinary asm-generic fallback pattern instead, keeping the two options
that are actually used. For now it leaves "nordrand" for now, as the
removal of that will take a different route.
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Borislav Petkov <bp@suse.de>
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
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While reading sysctl_tcp_notsent_lowat, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its reader.
Fixes: c9bee3b7fdec ("tcp: TCP_NOTSENT_LOWAT socket option")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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While reading these sysctl knobs, they can be changed concurrently.
Thus, we need to add READ_ONCE() to their readers.
- tcp_retries1
- tcp_retries2
- tcp_orphan_retries
- tcp_fin_timeout
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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