commit 0c33aa1804 upstream.
Neoverse-V3AE is also affected by erratum #3312417, as described in its
Software Developer Errata Notice (SDEN) document:
Neoverse V3AE (MP172) SDEN v9.0, erratum 3312417
https://developer.arm.com/documentation/SDEN-2615521/9-0/
Enable the workaround for Neoverse-V3AE, and document this.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Ryan Roberts <ryan.roberts@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit 0b4b77eff5 ]
This sysctl is not per interface; it's global per netns.
Fixes: 292ecd9f5a ("doc: move seg6_flowlabel to seg6-sysctl.rst")
Reported-by: Philippe Guibert <philippe.guibert@6wind.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 278033a225 ]
When CONFIG_TMPFS is enabled, the initial root filesystem is a tmpfs.
By default, a tmpfs mount is limited to using 50% of the available RAM
for its content. This can be problematic in memory-constrained
environments, particularly during a kdump capture.
In a kdump scenario, the capture kernel boots with a limited amount of
memory specified by the 'crashkernel' parameter. If the initramfs is
large, it may fail to unpack into the tmpfs rootfs due to insufficient
space. This is because to get X MB of usable space in tmpfs, 2*X MB of
memory must be available for the mount. This leads to an OOM failure
during the early boot process, preventing a successful crash dump.
This patch introduces a new kernel command-line parameter,
initramfs_options, which allows passing specific mount options directly
to the rootfs when it is first mounted. This gives users control over
the rootfs behavior.
For example, a user can now specify initramfs_options=size=75% to allow
the tmpfs to use up to 75% of the available memory. This can
significantly reduce the memory pressure for kdump.
Consider a practical example:
To unpack a 48MB initramfs, the tmpfs needs 48MB of usable space. With
the default 50% limit, this requires a memory pool of 96MB to be
available for the tmpfs mount. The total memory requirement is therefore
approximately: 16MB (vmlinuz) + 48MB (loaded initramfs) + 48MB (unpacked
kernel) + 96MB (for tmpfs) + 12MB (runtime overhead) ≈ 220MB.
By using initramfs_options=size=75%, the memory pool required for the
48MB tmpfs is reduced to 48MB / 0.75 = 64MB. This reduces the total
memory requirement by 32MB (96MB - 64MB), allowing the kdump to succeed
with a smaller crashkernel size, such as 192MB.
An alternative approach of reusing the existing rootflags parameter was
considered. However, a new, dedicated initramfs_options parameter was
chosen to avoid altering the current behavior of rootflags (which
applies to the final root filesystem) and to prevent any potential
regressions.
Also add documentation for the new kernel parameter "initramfs_options"
This approach is inspired by prior discussions and patches on the topic.
Ref: https://www.lightofdawn.org/blog/?viewDetailed=00128
Ref: https://landley.net/notes-2015.html#01-01-2015
Ref: https://lkml.org/lkml/2021/6/29/783
Ref: https://www.kernel.org/doc/html/latest/filesystems/ramfs-rootfs-initramfs.html#what-is-rootfs
Signed-off-by: Lichen Liu <lichliu@redhat.com>
Link: https://lore.kernel.org/20250815121459.3391223-1-lichliu@redhat.com
Tested-by: Rob Landley <rob@landley.net>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
commit c254815b02 upstream.
There are variants of the Rockchip Innosilicon CSI DPHY (e.g., the RK3568
variant) that are powered on by default as they are part of the ALIVE power
domain.
Remove 'power-domains' from the required properties in order to avoid false
positives.
Fixes: 22c8e0a69b ("dt-bindings: phy: add compatible for rk356x to rockchip-inno-csi-dphy")
Cc: stable@kernel.org
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Michael Riesch <michael.riesch@collabora.com>
Link: https://lore.kernel.org/r/20250616-rk3588-csi-dphy-v4-2-a4f340a7f0cf@collabora.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit 8c716e87ea ]
Section heading for sched_waking histogram is shown as normal paragraph
instead due to codeblock marker for the following diagram being in the
same line as the section underline. Separate them.
Fixes: daceabf1b4 ("tracing/doc: Fix ascii-art in histogram-design.rst")
Reviewed-by: Tom Zanussi <zanussi@kernel.org>
Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20250916054202.582074-5-bagasdotme@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 3ed17349f1 ]
When WMAB is called to set the fan mode, the new mode is read from either
bits 0-1 or bits 4-5 (depending on the value of some other EC register).
Thus when WMAB is called with bits 4-5 zeroed and called again with
bits 0-1 zeroed, the second call undoes the effect of the first call.
This causes writes to /sys/devices/platform/lg-laptop/fan_mode to have
no effect (and causes reads to always report a status of zero).
Fix this by calling WMAB once, with the mode set in bits 0,1 and 4,5.
When the fan mode is returned from WMAB it always has this form, so
there is no need to preserve the other bits. As a bonus, the driver
now supports the "Performance" fan mode seen in the LG-provided Windows
control app, which provides less aggressive CPU throttling but louder
fan noise and shorter battery life.
Also, correct the documentation to reflect that 0 corresponds to the
default mode (what the Windows app calls "Optimal") and 1 corresponds
to the silent mode.
Fixes: dbf0c5a6b1 ("platform/x86: Add LG Gram laptop special features driver")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=204913#c4
Signed-off-by: Daniel Lee <dany97@live.ca>
Link: https://patch.msgid.link/MN2PR06MB55989CB10E91C8DA00EE868DDC1CA@MN2PR06MB5598.namprd06.prod.outlook.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
commit 2293c57484 upstream.
During the connection establishment, a peer can tell the other one that
it cannot establish new subflows to the initial IP address and port by
setting the 'C' flag [1]. Doing so makes sense when the sender is behind
a strict NAT, operating behind a legacy Layer 4 load balancer, or using
anycast IP address for example.
When this 'C' flag is set, the path-managers must then not try to
establish new subflows to the other peer's initial IP address and port.
The in-kernel PM has access to this info, but the userspace PM didn't.
The RFC8684 [1] is strict about that:
(...) therefore the receiver MUST NOT try to open any additional
subflows toward this address and port.
So it is important to tell the userspace about that as it is responsible
for the respect of this flag.
When a new connection is created and established, the Netlink events
now contain the existing but not currently used 'flags' attribute. When
MPTCP_PM_EV_FLAG_DENY_JOIN_ID0 is set, it means no other subflows
to the initial IP address and port -- info that are also part of the
event -- can be established.
Link: https://datatracker.ietf.org/doc/html/rfc8684#section-3.1-20.6 [1]
Fixes: 702c2f646d ("mptcp: netlink: allow userspace-driven subflow establishment")
Reported-by: Marek Majkowski <marek@cloudflare.com>
Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/532
Reviewed-by: Mat Martineau <martineau@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20250912-net-mptcp-pm-uspace-deny_join_id0-v1-2-40171884ade8@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
[ Conflicts in mptcp_pm.yaml, because the indentation has been modified
in commit ec362192aa ("netlink: specs: fix up indentation errors"),
which is not in this version. Applying the same modifications, but at
a different level. ]
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 8442df2b49 upstream.
Add support for
CPUID Fn8000_0021_EAX[31] (SRSO_MSR_FIX). If this bit is 1, it
indicates that software may use MSR BP_CFG[BpSpecReduce] to mitigate
SRSO.
Enable BpSpecReduce to mitigate SRSO across guest/host boundaries.
Switch back to enabling the bit when virtualization is enabled and to
clear the bit when virtualization is disabled because using a MSR slot
would clear the bit when the guest is exited and any training the guest
has done, would potentially influence the host kernel when execution
enters the kernel and hasn't VMRUN the guest yet.
More detail on the public thread in Link below.
Co-developed-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20241202120416.6054-1-bp@kernel.org
Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit 641427d5bf ]
The documentation of the 'bcm_msg_head' struct does not match how
it is defined in 'bcm.h'. Changed the frames member to a flexible array,
matching the definition in the header file.
See commit 94dfc73e7c ("treewide: uapi: Replace zero-length arrays with
flexible-array members")
Signed-off-by: Alex Tran <alex.t.tran@gmail.com>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Link: https://patch.msgid.link/20250904031709.1426895-1-alex.t.tran@gmail.com
Fixes: 94dfc73e7c ("treewide: uapi: Replace zero-length arrays with flexible-array members")
Link: https://bugzilla.kernel.org/show_bug.cgi?id=217783
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
commit ee047e1d85 upstream.
Lists should have fixed constraints, because binding must be specific in
respect to hardware, thus add missing constraints to number of clocks.
Cc: stable <stable@kernel.org>
Fixes: 88a499cd70 ("dt-bindings: Add support for the Broadcom UART driver")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250812121630.67072-2-krzysztof.kozlowski@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit 7094b84863 ]
This attribute is used as a signed number in the code in pm_netlink.c:
nla_put_s32(skb, MPTCP_ATTR_IF_IDX, ssk->sk_bound_dev_if))
The specs should then reflect that. Note that other 'if-idx' attributes
from the same .yaml file use a signed number as well.
Fixes: bc8aeb2045 ("Documentation: netlink: add a YAML spec for mptcp")
Cc: stable@vger.kernel.org
Reviewed-by: Geliang Tang <geliang@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20250908-net-mptcp-misc-fixes-6-17-rc5-v1-1-5f2168a66079@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit 9e6dd4c256 ]
We're trying to add a strict regexp for the name format in the spec.
Underscores will not be allowed, dashes should be used instead.
This makes no difference to C (codegen, if used, replaces special
chars in names) but it gives more uniform naming in Python.
Fixes: bc8aeb2045 ("Documentation: netlink: add a YAML spec for mptcp")
Reviewed-by: Davide Caratti <dcaratti@redhat.com>
Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20250624211002.3475021-8-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: 7094b84863 ("netlink: specs: mptcp: fix if-idx attribute type")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit bea87657b5 ]
The rendered version of the MPTCP events [1] looked strange, because the
whole content of the 'doc' was displayed in the same block.
It was then not clear that the first words, not even ended by a period,
were the attributes that are defined when such events are emitted. These
attributes have now been moved to the end, prefixed by 'Attributes:' and
ended with a period. Note that '>-' has been added after 'doc:' to allow
':' in the text below.
The documentation in the UAPI header has been auto-generated by:
./tools/net/ynl/ynl-regen.sh
Link: https://docs.kernel.org/networking/netlink_spec/mptcp_pm.html#event-type [1]
Reviewed-by: Geliang Tang <geliang@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20241221-net-mptcp-netlink-specs-pm-doc-fixes-v2-2-e54f2db3f844@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: 7094b84863 ("netlink: specs: mptcp: fix if-idx attribute type")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit 6b830c6a02 ]
This attribute is added with the 'created' and 'established' events, but
the documentation didn't mention it.
The documentation in the UAPI header has been auto-generated by:
./tools/net/ynl/ynl-regen.sh
Reviewed-by: Geliang Tang <geliang@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20241221-net-mptcp-netlink-specs-pm-doc-fixes-v2-1-e54f2db3f844@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: 7094b84863 ("netlink: specs: mptcp: fix if-idx attribute type")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit 3feec68563 ]
This commit simply adds the required O_DIRECT plumbing. It doesn't
address the fact that NFS doesn't ensure all writes are page aligned
(nor device logical block size aligned as required by O_DIRECT).
Because NFS will read-modify-write for IO that isn't aligned, LOCALIO
will not use O_DIRECT semantics by default if/when an application
requests the use of O_DIRECT. Allow the use of O_DIRECT semantics by:
1: Adding a flag to the nfs_pgio_header struct to allow the NFS
O_DIRECT layer to signal that O_DIRECT was used by the application
2: Adding a 'localio_O_DIRECT_semantics' NFS module parameter that
when enabled will cause LOCALIO to use O_DIRECT semantics (this may
cause IO to fail if applications do not properly align their IO).
This commit is derived from code developed by Weston Andros Adamson.
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Anna Schumaker <anna.schumaker@oracle.com>
Stable-dep-of: 992203a1fb ("nfs/localio: restore creds before releasing pageio data")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Commit 9969779d08 upstream.
VMSCAPE is a vulnerability that may allow a guest to influence the branch
prediction in host userspace, particularly affecting hypervisors like QEMU.
Add the documentation.
Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit 7ab3b7579a ]
None of MDP5 platforms have a LUT clock on the display-controller, it
was added by the mistake. Drop it, fixing DT warnings on MSM8976 /
MSM8956 platforms. Technically it's an ABI break, but no other platforms
are affected.
Fixes: 385c8ac763 ("dt-bindings: display/msm: convert MDP5 schema to YAML format")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Patchwork: https://patchwork.freedesktop.org/patch/667822/
Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
commit f5ce071462 upstream.
When add_addr_timeout was set to 0, this caused the ADD_ADDR to be
retransmitted immediately, which looks like a buggy behaviour. Instead,
interpret 0 as "no retransmissions needed".
The documentation is updated to explicitly state that setting the timeout
to 0 disables retransmission.
Fixes: 93f323b9cc ("mptcp: add a new sysctl add_addr_timeout")
Cc: stable@vger.kernel.org
Suggested-by: Matthieu Baerts <matttbe@kernel.org>
Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20250815-net-mptcp-misc-fixes-6-17-rc2-v1-5-521fe9957892@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
[ Before commit e4c28e3d5c ("mptcp: pm: move generic PM helpers to
pm.c"), mptcp_pm_alloc_anno_list() was in pm_netlink.c. The same patch
can be applied there without conflicts. ]
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 794ff7a0a6 upstream.
Add the 'mediatek,ufs-disable-mcq' property to the UFS device-tree
bindings. This flag corresponds to the UFS_MTK_CAP_DISABLE_MCQ host
capability recently introduced in the UFS host driver, allowing it to
disable the Multiple Circular Queue (MCQ) feature when present. The
binding schema has also been updated to resolve DTBS check errors.
Cc: stable@vger.kernel.org
Fixes: 46bd3e31d7 ("scsi: ufs: mediatek: Add UFS_MTK_CAP_DISABLE_MCQ")
Signed-off-by: Macpaul Lin <macpaul.lin@mediatek.com>
Link: https://lore.kernel.org/r/20250722085721.2062657-2-macpaul.lin@mediatek.com
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Peter Wang <peter.wang@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 2558df8c13 upstream.
'minItems' alone does not impose upper bound, unlike 'maxItems' which
implies lower bound. Add missing clock constraint so the list will have
exact number of items (clocks).
Fixes: 2295bbd35e ("dt-bindings: display: add Unisoc's mipi dsi controller bindings")
Cc: stable@vger.kernel.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250720123003.37662-4-krzysztof.kozlowski@linaro.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 934da599e6 upstream.
'minItems' alone does not impose upper bound, unlike 'maxItems' which
implies lower bound. Add missing clock constraint so the list will have
exact number of items (clocks).
Fixes: 8cae15c60c ("dt-bindings: display: add Unisoc's dpu bindings")
Cc: stable@vger.kernel.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250720123003.37662-3-krzysztof.kozlowski@linaro.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit e65cb01134 upstream.
The _CRS resources in many cases want to have ResourceSource field
to be a type of ACPI String. This means that to compile properly
we need to enclosure the name path into double quotes. This will
in practice defer the interpretation to a run-time stage, However,
this may be interpreted differently on different OSes and ACPI
interpreter implementations. In particular ACPICA might not correctly
recognize the leading '^' (caret) character and will not resolve
the relative name path properly. On top of that, this piece may be
used in SSDTs which are loaded after the DSDT and on itself may also
not resolve relative name paths outside of their own scopes.
With this all said, fix documentation to use fully-qualified name
paths always to avoid any misinterpretations, which is proven to
work.
Fixes: 8eb5c87a92 ("i2c: add ACPI support for I2C mux ports")
Reported-by: Yevhen Kondrashyn <e.kondrashyn@gmail.com>
Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20250710170225.961303-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit b41c1d8d07 upstream.
Make fscrypt no longer use Crypto API drivers for non-inline crypto
engines, even when the Crypto API prioritizes them over CPU-based code
(which unfortunately it often does). These drivers tend to be really
problematic, especially for fscrypt's workload. This commit has no
effect on inline crypto engines, which are different and do work well.
Specifically, exclude drivers that have CRYPTO_ALG_KERN_DRIVER_ONLY or
CRYPTO_ALG_ALLOCATES_MEMORY set. (Later, CRYPTO_ALG_ASYNC should be
excluded too. That's omitted for now to keep this commit backportable,
since until recently some CPU-based code had CRYPTO_ALG_ASYNC set.)
There are two major issues with these drivers: bugs and performance.
First, these drivers tend to be buggy. They're fundamentally much more
error-prone and harder to test than the CPU-based code. They often
don't get tested before kernel releases, and even if they do, the crypto
self-tests don't properly test these drivers. Released drivers have
en/decrypted or hashed data incorrectly. These bugs cause issues for
fscrypt users who often didn't even want to use these drivers, e.g.:
- https://github.com/google/fscryptctl/issues/32
- https://github.com/google/fscryptctl/issues/9
- https://lore.kernel.org/r/PH0PR02MB731916ECDB6C613665863B6CFFAA2@PH0PR02MB7319.namprd02.prod.outlook.com
These drivers have also similarly caused issues for dm-crypt users,
including data corruption and deadlocks. Since Linux v5.10, dm-crypt
has disabled most of them by excluding CRYPTO_ALG_ALLOCATES_MEMORY.
Second, these drivers tend to be *much* slower than the CPU-based code.
This may seem counterintuitive, but benchmarks clearly show it. There's
a *lot* of overhead associated with going to a hardware driver, off the
CPU, and back again. To prove this, I gathered as many systems with
this type of crypto engine as I could, and I measured synchronous
encryption of 4096-byte messages (which matches fscrypt's workload):
Intel Emerald Rapids server:
AES-256-XTS:
xts-aes-vaes-avx512 16171 MB/s [CPU-based, Vector AES]
qat_aes_xts 289 MB/s [Offload, Intel QuickAssist]
Qualcomm SM8650 HDK:
AES-256-XTS:
xts-aes-ce 4301 MB/s [CPU-based, ARMv8 Crypto Extensions]
xts-aes-qce 73 MB/s [Offload, Qualcomm Crypto Engine]
i.MX 8M Nano LPDDR4 EVK:
AES-256-XTS:
xts-aes-ce 647 MB/s [CPU-based, ARMv8 Crypto Extensions]
xts(ecb-aes-caam) 20 MB/s [Offload, CAAM]
AES-128-CBC-ESSIV:
essiv(cbc-aes-caam,sha256-lib) 23 MB/s [Offload, CAAM]
STM32MP157F-DK2:
AES-256-XTS:
xts-aes-neonbs 13.2 MB/s [CPU-based, ARM NEON]
xts(stm32-ecb-aes) 3.1 MB/s [Offload, STM32 crypto engine]
AES-128-CBC-ESSIV:
essiv(cbc-aes-neonbs,sha256-lib)
14.7 MB/s [CPU-based, ARM NEON]
essiv(stm32-cbc-aes,sha256-lib)
3.2 MB/s [Offload, STM32 crypto engine]
Adiantum:
adiantum(xchacha12-arm,aes-arm,nhpoly1305-neon)
52.8 MB/s [CPU-based, ARM scalar + NEON]
So, there was no case in which the crypto engine was even *close* to
being faster. On the first three, which have AES instructions in the
CPU, the CPU was 30 to 55 times faster (!). Even on STM32MP157F-DK2
which has a Cortex-A7 CPU that doesn't have AES instructions, AES was
over 4 times faster on the CPU. And Adiantum encryption, which is what
actually should be used on CPUs like that, was over 17 times faster.
Other justifications that have been given for these non-inline crypto
engines (almost always coming from the hardware vendors, not actual
users) don't seem very plausible either:
- The crypto engine throughput could be improved by processing
multiple requests concurrently. Currently irrelevant to fscrypt,
since it doesn't do that. This would also be complex, and unhelpful
in many cases. 2 of the 4 engines I tested even had only one queue.
- Some of the engines, e.g. STM32, support hardware keys. Also
currently irrelevant to fscrypt, since it doesn't support these.
Interestingly, the STM32 driver itself doesn't support this either.
- Free up CPU for other tasks and/or reduce energy usage. Not very
plausible considering the "short" message length, driver overhead,
and scheduling overhead. There's just very little time for the CPU
to do something else like run another task or enter low-power state,
before the message finishes and it's time to process the next one.
- Some of these engines resist power analysis and electromagnetic
attacks, while the CPU-based crypto generally does not. In theory,
this sounds great. In practice, if this benefit requires the use of
an off-CPU offload that massively regresses performance and has a
low-quality, buggy driver, the price for this hardening (which is
not relevant to most fscrypt users, and tends to be incomplete) is
just too high. Inline crypto engines are much more promising here,
as are on-CPU solutions like RISC-V High Assurance Cryptography.
Fixes: b30ab0e034 ("ext4 crypto: add ext4 encryption facilities")
Cc: stable@vger.kernel.org
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20250704070322.20692-1-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit 0105101288 ]
Module (SFP) eeprom GET has a lot of input params, they are all
mistakenly listed as output in the spec. Looks like kernel doesn't
output them at all. Correct what are the inputs and what the outputs.
Reported-by: Duo Yi <duo@meta.com>
Fixes: a353318ebf ("tools: ynl: populate most of the ethtool spec")
Acked-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20250730172137.1322351-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 81b6ecca2f ]
We should use "{usr,grp,prj}jquota=" to disable journaled quota,
rather than using off{usr,grp,prj}jquota.
Fixes: 4b2414d04e ("f2fs: support journalled quota")
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit d4adf1c9ee ]
BPF_MAP_TYPE_LRU_HASH can recycle most recent elements well before the
map is full, due to percpu reservations and force shrink before
neighbor stealing. Once a CPU is unable to borrow from the global map,
it will once steal one elem from a neighbor and after that each time
flush this one element to the global list and immediately recycle it.
Batch value LOCAL_FREE_TARGET (128) will exhaust a 10K element map
with 79 CPUs. CPU 79 will observe this behavior even while its
neighbors hold 78 * 127 + 1 * 15 == 9921 free elements (99%).
CPUs need not be active concurrently. The issue can appear with
affinity migration, e.g., irqbalance. Each CPU can reserve and then
hold onto its 128 elements indefinitely.
Avoid global list exhaustion by limiting aggregate percpu caches to
half of map size, by adjusting LOCAL_FREE_TARGET based on cpu count.
This change has no effect on sufficiently large tables.
Similar to LOCAL_NR_SCANS and lru->nr_scans, introduce a map variable
lru->free_target. The extra field fits in a hole in struct bpf_lru.
The cacheline is already warm where read in the hot path. The field is
only accessed with the lru lock held.
Tested-by: Anton Protopopov <a.s.protopopov@gmail.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Acked-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://lore.kernel.org/r/20250618215803.3587312-1-willemdebruijn.kernel@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Commit d8010d4ba4 upstream.
Add the required features detection glue to bugs.c et all in order to
support the TSA mitigation.
Co-developed-by: Kim Phillips <kim.phillips@amd.com>
Signed-off-by: Kim Phillips <kim.phillips@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Commit f9af88a3d3 upstream.
It will be used by other x86 mitigations.
No functional changes.
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit 707f853d7f ]
Helper macro to more easily limit the export of a symbol to a given
list of modules.
Eg:
EXPORT_SYMBOL_GPL_FOR_MODULES(preempt_notifier_inc, "kvm");
will limit the use of said function to kvm.ko, any other module trying
to use this symbol will refure to load (and get modpost build
failures).
Requested-by: Masahiro Yamada <masahiroy@kernel.org>
Requested-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Reviewed-by: Petr Pavlu <petr.pavlu@suse.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Stable-dep-of: cbe4134ea4 ("fs: export anon_inode_make_secure_inode() and fix secretmem LSM bypass")
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 021f243627 ]
Change "resourse" into "resource" in the name of a sysfs attribute.
Fixes: d829fc8a10 ("scsi: ufs: sysfs: unit descriptor")
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20250624181658.336035-1-bvanassche@acm.org
Reviewed-by: Avri Altman <avri.altman@sandisk.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
commit 0981213407 upstream.
The 8250 binding before converting to json-schema states,
- clock-frequency : the input clock frequency for the UART
or
- clocks phandle to refer to the clk used as per Documentation/devicetree
for clock-related properties, where "or" indicates these properties
shouldn't exist at the same time.
Additionally, the behavior of Linux's driver is strange when both clocks
and clock-frequency are specified: it ignores clocks and obtains the
frequency from clock-frequency, left the specified clocks unclaimed. It
may even be disabled, which is undesired most of the time.
But "anyOf" doesn't prevent these two properties from coexisting, as it
considers the object valid as long as there's at LEAST one match.
Let's switch to "oneOf" and disallows the other property if one exists,
precisely matching the original binding and avoiding future confusion on
the driver's behavior.
Fixes: e69f5dc623 ("dt-bindings: serial: Convert 8250 to json-schema")
Cc: stable <stable@kernel.org>
Signed-off-by: Yao Zi <ziyao@disroot.org>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20250623093445.62327-1-ziyao@disroot.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit eef0eaeca7 ]
We're trying to add a strict regexp for the name format in the spec.
Underscores will not be allowed, dashes should be used instead.
This makes no difference to C (codegen, if used, replaces special
chars in names) but it gives more uniform naming in Python.
Fixes: a1bcfde836 ("doc/netlink/specs: Add a spec for tc")
Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://patch.msgid.link/20250624211002.3475021-10-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
commit 903cc7096d upstream.
Specify the properties which are essential and which are not for the
Tegra I2C driver to function correctly. This was not added correctly when
the TXT binding was converted to yaml. All the existing DT nodes have
these properties already and hence this does not break the ABI.
dmas and dma-names which were specified as a must in the TXT binding
is now made optional since the driver can work in PIO mode if dmas are
missing.
Fixes: f10a9b722f ("dt-bindings: i2c: tegra: Convert to json-schema”)
Signed-off-by: Akhil R <akhilrajeev@nvidia.com>
Cc: <stable@vger.kernel.org> # v5.17+
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Andi Shyti <andi@smida.it>
Link: https://lore.kernel.org/r/20250603153022.39434-1-akhilrajeev@nvidia.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit ac954145e1 upstream.
Introduce `rustc-min-version` support function that mimics
`{gcc,clang}-min-version` ones, following commit 88b61e3bff
("Makefile.compiler: replace cc-ifversion with compiler-specific macros").
In addition, use it in the first use case we have in the kernel (which
was done independently to minimize the changes needed for the fix).
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Reviewed-by: Fiona Behrens <me@Kloenk.dev>
Reviewed-by: Nicolas Schier <n.schier@avm.de>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 9cfdd7752b upstream.
Some of the regulators on the MT6357 PMIC currently reference the
fixed-regulator dt-binding, which enforces the presence of a
regulator-fixed compatible. However since all regulators on the MT6357
PMIC are handled by a single mt6357-regulator driver, probed through
MFD, the compatibles don't serve any purpose. In fact they cause
failures in the DT kselftest since they aren't probed by the fixed
regulator driver as would be expected. Furthermore this is the only
dt-binding in this family like this: mt6359-regulator and
mt6358-regulator don't require those compatibles.
Commit d77e89b7b0 ("arm64: dts: mediatek: mt6357: Drop regulator-fixed
compatibles") removed the compatibles from Devicetree, but missed
updating the binding, which still requires them, introducing dt-binding
errors. Remove the compatible requirement by referencing the plain
regulator dt-binding instead to fix the dt-binding errors.
Fixes: d77e89b7b0 ("arm64: dts: mediatek: mt6357: Drop regulator-fixed compatibles")
Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Link: https://patch.msgid.link/20250514-mt6357-regulator-fixed-compatibles-removal-bindings-v1-1-2421e9cc6cc7@collabora.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit e683131e64 ]
Fix a shortcoming in the bindings that doesn't allow for a separate
external clock.
The AXI PWMGEN IP block has a compile option ASYNC_CLK_EN that allows
the use of an external clock for the PWM output separate from the AXI
clock that runs the peripheral.
This was missed in the original bindings and so users were writing dts
files where the one and only clock specified would be the external
clock, if there was one, incorrectly missing the separate AXI clock.
The correct bindings are that the AXI clock is always required and the
external clock is optional (must be given only when HDL compile option
ASYNC_CLK_EN=1).
Fixes: 1edf2c2a28 ("dt-bindings: pwm: Add AXI PWM generator")
Cc: stable@vger.kernel.org
Signed-off-by: David Lechner <dlechner@baylibre.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250529-pwm-axi-pwmgen-add-external-clock-v3-2-5d8809a7da91@baylibre.com
Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 78dcad6daa ]
DTS example in the bindings should be indented with 2- or 4-spaces and
aligned with opening '- |', so correct any differences like 3-spaces or
mixtures 2- and 4-spaces in one binding.
No functional changes here, but saves some comments during reviews of
new patches built on existing code.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Nuno Sa <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20250107125831.225068-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
Stable-dep-of: e683131e64 ("dt-bindings: pwm: adi,axi-pwmgen: Fix clocks")
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 664b5e466f ]
Using 3 cells allows to pass additional flags and is the normal
abstraction for new PWM descriptions. There are no device trees yet to
adapt to this change.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Trevor Gamblin <tgamblin@baylibre.com>
Link: https://lore.kernel.org/r/20241024102554.711689-2-u.kleine-koenig@baylibre.com
Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
Stable-dep-of: e683131e64 ("dt-bindings: pwm: adi,axi-pwmgen: Fix clocks")
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 55f8aa0836 ]
The documentation was created with the creation of the component,
however it has never been actually shown in the actual Documentation.
While doing this, fixes the identation style, to avoid new warnings
while building htmldocs.
Fixes: bef52b5c7a ("drm/xe: Create a xe_gt_freq component for raw management and sysfs")
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://lore.kernel.org/r/20250521165146.39616-3-rodrigo.vivi@intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
(cherry picked from commit af53f0fd99)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 9baa27a2e9 ]
Liontron is a company based in Shenzen, China, making industrial
development boards and embedded computers, mostly using Rockchip and
Allwinner SoCs.
Add their name to the list of vendors.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20250505164729.18175-2-andre.przywara@arm.com
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 1090c38bbf ]
The reserved-memory.yaml reference needs the full path. No warnings were
generated because the example has the wrong compatible string, so fix
that too.
Fixes: 304a90c4f7 ("dt-bindings: soc: fsl: Convert q(b)man-* to yaml format")
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20250507154231.1590634-1-robh@kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
commit 5b3a91b207 upstream.
The ticket TKT0676370 shows the description of TX_VBOOST_LVL is wrong in
register PHY_CTRL3 bit[31:29].
011: Corresponds to a launch amplitude of 1.12 V.
010: Corresponds to a launch amplitude of 1.04 V.
000: Corresponds to a launch amplitude of 0.88 V.
After updated:
011: Corresponds to a launch amplitude of 0.844 V.
100: Corresponds to a launch amplitude of 1.008 V.
101: Corresponds to a launch amplitude of 1.156 V.
This will correct it accordingly.
Fixes: b2e75563dc ("dt-bindings: phy: imx8mq-usb: add phy tuning properties")
Cc: stable@vger.kernel.org
Reviewed-by: Jun Li <jun.li@nxp.com>
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250430094502.2723983-1-xu.yang_2@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 1ad4b5a7de upstream.
The Cypress HX3 hubs use different default PID value depending
on the variant. Update compatibles list.
Becasuse all hub variants use the same driver data, allow the
dt node to have two compatibles: leftmost which matches the HW
exactly, and the second one as fallback.
Fixes: 1eca51f58a ("dt-bindings: usb: Add binding for Cypress HX3 USB 3.0 family")
Cc: stable@vger.kernel.org # 6.6
Cc: stable@vger.kernel.org # Backport of the patch ("dt-bindings: usb: usb-device: relax compatible pattern to a contains") from list: https://lore.kernel.org/linux-usb/20250418-dt-binding-usb-device-compatibles-v2-1-b3029f14e800@cherry.de/
Cc: stable@vger.kernel.org # Backport of the patch in this series fixing product ID in onboard_dev_id_table in drivers/usb/misc/onboard_usb_dev.c driver
Signed-off-by: Lukasz Czechowski <lukasz.czechowski@thaumatec.com>
Reviewed-by: "Rob Herring (Arm)" <robh@kernel.org>
Link: https://lore.kernel.org/r/20250425-onboard_usb_dev-v2-2-4a76a474a010@thaumatec.com
[taken with Greg's blessing]
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 6db0261f37 upstream.
Document that references to data nodes shall use string-only references
instead of a device reference and a succession of the first package
entries of hierarchical data node references.
Fixes: 9880702d12 ("ACPI: property: Support using strings in reference properties")
Cc: 6.8+ <stable@vger.kernel.org> # 6.8+
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Link: https://patch.msgid.link/20250409084738.3657079-1-sakari.ailus@linux.intel.com
[ rjw: Clarifying edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit 1bd2aad57d ]
The following splat has been observed on a SAMA5D27 platform using
atmel_serial:
BUG: sleeping function called from invalid context at kernel/irq/manage.c:738
in_atomic(): 1, irqs_disabled(): 128, non_block: 0, pid: 27, name: kworker/u5:0
preempt_count: 1, expected: 0
INFO: lockdep is turned off.
irq event stamp: 0
hardirqs last enabled at (0): [<00000000>] 0x0
hardirqs last disabled at (0): [<c01588f0>] copy_process+0x1c4c/0x7bec
softirqs last enabled at (0): [<c0158944>] copy_process+0x1ca0/0x7bec
softirqs last disabled at (0): [<00000000>] 0x0
CPU: 0 UID: 0 PID: 27 Comm: kworker/u5:0 Not tainted 6.13.0-rc7+ #74
Hardware name: Atmel SAMA5
Workqueue: hci0 hci_power_on [bluetooth]
Call trace:
unwind_backtrace from show_stack+0x18/0x1c
show_stack from dump_stack_lvl+0x44/0x70
dump_stack_lvl from __might_resched+0x38c/0x598
__might_resched from disable_irq+0x1c/0x48
disable_irq from mctrl_gpio_disable_ms+0x74/0xc0
mctrl_gpio_disable_ms from atmel_disable_ms.part.0+0x80/0x1f4
atmel_disable_ms.part.0 from atmel_set_termios+0x764/0x11e8
atmel_set_termios from uart_change_line_settings+0x15c/0x994
uart_change_line_settings from uart_set_termios+0x2b0/0x668
uart_set_termios from tty_set_termios+0x600/0x8ec
tty_set_termios from ttyport_set_flow_control+0x188/0x1e0
ttyport_set_flow_control from wilc_setup+0xd0/0x524 [hci_wilc]
wilc_setup [hci_wilc] from hci_dev_open_sync+0x330/0x203c [bluetooth]
hci_dev_open_sync [bluetooth] from hci_dev_do_open+0x40/0xb0 [bluetooth]
hci_dev_do_open [bluetooth] from hci_power_on+0x12c/0x664 [bluetooth]
hci_power_on [bluetooth] from process_one_work+0x998/0x1a38
process_one_work from worker_thread+0x6e0/0xfb4
worker_thread from kthread+0x3d4/0x484
kthread from ret_from_fork+0x14/0x28
This warning is emitted when trying to toggle, at the highest level,
some flow control (with serdev_device_set_flow_control) in a device
driver. At the lowest level, the atmel_serial driver is using
serial_mctrl_gpio lib to enable/disable the corresponding IRQs
accordingly. The warning emitted by CONFIG_DEBUG_ATOMIC_SLEEP is due to
disable_irq (called in mctrl_gpio_disable_ms) being possibly called in
some atomic context (some tty drivers perform modem lines configuration
in regions protected by port lock).
Split mctrl_gpio_disable_ms into two differents APIs, a non-blocking one
and a blocking one. Replace mctrl_gpio_disable_ms calls with the
relevant version depending on whether the call is protected by some port
lock.
Suggested-by: Jiri Slaby <jirislaby@kernel.org>
Signed-off-by: Alexis Lothoré <alexis.lothore@bootlin.com>
Acked-by: Richard Genoud <richard.genoud@bootlin.com>
Link: https://lore.kernel.org/r/20250217-atomic_sleep_mctrl_serial_gpio-v3-1-59324b313eef@bootlin.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 98fdaeb296 ]
Change the default value of spectre v2 in user mode to respect the
CONFIG_MITIGATION_SPECTRE_V2 config option.
Currently, user mode spectre v2 is set to auto
(SPECTRE_V2_USER_CMD_AUTO) by default, even if
CONFIG_MITIGATION_SPECTRE_V2 is disabled.
Set the spectre_v2 value to auto (SPECTRE_V2_USER_CMD_AUTO) if the
Spectre v2 config (CONFIG_MITIGATION_SPECTRE_V2) is enabled, otherwise
set the value to none (SPECTRE_V2_USER_CMD_NONE).
Important to say the command line argument "spectre_v2_user" overwrites
the default value in both cases.
When CONFIG_MITIGATION_SPECTRE_V2 is not set, users have the flexibility
to opt-in for specific mitigations independently. In this scenario,
setting spectre_v2= will not enable spectre_v2_user=, and command line
options spectre_v2_user and spectre_v2 are independent when
CONFIG_MITIGATION_SPECTRE_V2=n.
Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Acked-by: Josh Poimboeuf <jpoimboe@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: David Kaplan <David.Kaplan@amd.com>
Link: https://lore.kernel.org/r/20241031-x86_bugs_last_v2-v2-2-b7ff1dab840e@debian.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit dbcfcb239b ]
Some Alienware laptops that support the SMM interface, may have up to 4
fans.
Tested on an Alienware x15 r1.
Signed-off-by: Kurt Borja <kuurtb@gmail.com>
Link: https://lore.kernel.org/r/20250304055249.51940-2-kuurtb@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit f3dd5fb2fa ]
Some TC filters have actions listed as indexed arrays of nests
and some as just nests. They are all indexed arrays, the handling
is common across filters.
Fixes: 2267672a61 ("doc/netlink/specs: Update the tc spec")
Link: https://patch.msgid.link/20250513221638.842532-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit a9fb87b8b8 ]
Fix up spelling of two attribute names. These are clearly typoes
and will prevent C codegen from working. Let's treat this as
a fix to get the correction into users' hands ASAP, and prevent
anyone depending on the wrong names.
Fixes: a1bcfde836 ("doc/netlink/specs: Add a spec for tc")
Link: https://patch.msgid.link/20250513221316.841700-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
