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At present, we determine the protocol through the cmd type, but other cmd
types, such as vendor-specific commands, default to the PIO protocol. This
strategy often causes the execution of different vendor-specific commands
to fail. In fact, for these commands, a better way is to use the protocol
configured by the command's tf to determine its protocol.
Fixes: 6f2ff1a1311e ("hisi_sas: add v2 path to send ATA command")
Signed-off-by: Xingui Yang <yangxingui@huawei.com>
Link: https://lore.kernel.org/r/20250220090011.313848-1-liyihang9@huawei.com
Reviewed-by: Yihang Li <liyihang9@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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strscpy_pad() already NUL-terminates 'data' at the corresponding
indexes. Remove any unnecessary NUL-terminations.
No functional changes intended.
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Link: https://lore.kernel.org/r/20250314221626.43174-2-thorsten.blum@linux.dev
Reviewed-by: Karan Tilak Kumar <kartilak@cisco.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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destroy_workqueue() already drains the queue before destroying it, so
there is no need to flush it explicitly.
Remove the redundant flush_workqueue() calls.
This was generated with coccinelle:
@@
expression E;
@@
- flush_workqueue(E);
destroy_workqueue(E);
Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Link: https://lore.kernel.org/r/20250312074320.1430175-1-nichen@iscas.ac.cn
Reviewed-by: Karan Tilak Kumar <kartilak@cisco.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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The guidelines mention that firmware updates can't break the kernel,
but it doesn't state directly that they can't break userspace programs.
Make it explicit that firmware updates cannot break UAPI.
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Acked-by: Dave Airlie <airlied@redhat.com>
[jc: fixed "no trailing newline"]
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20250314100137.2972355-1-jacek.lawrynowicz@linux.intel.com
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Guest FPUs manage vCPU FPU states. They are allocated via
fpu_alloc_guest_fpstate() and are resized in fpstate_realloc() when XFD
features are enabled.
Since the introduction of guest FPUs, there have been inconsistencies in
the kernel buffer size and xfeatures:
1. fpu_alloc_guest_fpstate() uses fpu_user_cfg since its introduction. See:
69f6ed1d14c6 ("x86/fpu: Provide infrastructure for KVM FPU cleanup")
36487e6228c4 ("x86/fpu: Prepare guest FPU for dynamically enabled FPU features")
2. __fpstate_reset() references fpu_kernel_cfg to set storage attributes.
3. fpu->guest_perm uses fpu_kernel_cfg, affecting fpstate_realloc().
A recent commit in the tip:x86/fpu tree partially addressed the inconsistency
between (1) and (3) by using fpu_kernel_cfg for size calculation in (1),
but left fpu_guest->xfeatures and fpu_guest->perm still referencing
fpu_user_cfg:
https://lore.kernel.org/all/20250218141045.85201-1-stanspas@amazon.de/
1937e18cc3cf ("x86/fpu: Fix guest FPU state buffer allocation size")
The inconsistencies within fpu_alloc_guest_fpstate() and across the
mentioned functions cause confusion.
Fix them by using fpu_kernel_cfg consistently in fpu_alloc_guest_fpstate(),
except for fields related to the UABI buffer. Referencing fpu_kernel_cfg
won't impact functionalities, as:
1. fpu_guest->perm is overwritten shortly in fpu_init_guest_permissions()
with fpstate->guest_perm, which already uses fpu_kernel_cfg.
2. fpu_guest->xfeatures is solely used to check if XFD features are enabled.
Including supervisor xfeatures doesn't affect the check.
Fixes: 36487e6228c4 ("x86/fpu: Prepare guest FPU for dynamically enabled FPU features")
Suggested-by: Chang S. Bae <chang.seok.bae@intel.com>
Signed-off-by: Chao Gao <chao.gao@intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Stefano Stabellini <sstabellini@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
Cc: Sean Christopherson <seanjc@google.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Link: https://lore.kernel.org/r/20250317140613.1761633-1-chao.gao@intel.com
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Point out that explicit permission is usually needed to tag other people
in changes, but mention that implicit permission can be sufficient in
certain cases. This fixes slight inconsistencies between Reported-by:
and Suggested-by: and makes the usage more intuitive.
While at it, explicitly mention the dangers of our bugzilla instance, as
it makes it easy to forget that email addresses visible there are only
shown to logged-in users.
The latter is not a theoretical issue, as one maintainer mentioned that
his employer received a EU GDPR (general data protection regulation)
complaint after exposing a email address used in bugzilla through a tag
in a patch description.
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Simona Vetter <simona.vetter@ffwll.ch>
Cc: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Thorsten Leemhuis <linux@leemhuis.info>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/588cf2763baa8fea1f4825f4eaa7023fe88bb6c1.1738852082.git.linux@leemhuis.info
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The highuid.rst document describes a transition that is outdated and no
longer relevant. Additionally, it references filesystems (ncpfs and smbfs),
which have been removed or replaced.
Suggested-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Kang Taeho <kangtaeho2456@gmail.com>
Link: https://lore.kernel.org/r/20250313145650.278346-1-kangtaeho2456@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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The IBS software filter is filtering kernel samples for regular users in
the PMI handler. It checks the instruction address in the IBS register to
determine if it was in kernel mode or not.
But it turns out that it's possible to report a kernel data address even
if the instruction address belongs to user-space. Matteo Rizzo
found that when an instruction raises an exception, IBS can report some
kernel data addresses like IDT while holding the faulting instruction's
RIP. To prevent an information leak, it should double check if the data
address in PERF_SAMPLE_DATA is in the kernel space as well.
[ mingo: Clarified the changelog ]
Suggested-by: Matteo Rizzo <matteorizzo@google.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20250317163755.1842589-1-namhyung@kernel.org
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If @server->tcpStatus is set to CifsNeedReconnect after acquiring
@ses->session_mutex in smb2_reconnect() or cifs_reconnect_tcon(), it
means that a concurrent thread failed to negotiate, in which case the
server is no longer responding to any SMB requests, so there is no
point making the caller retry the IO by returning -EAGAIN.
Fix this by returning -EHOSTDOWN to the callers on soft mounts.
Cc: David Howells <dhowells@redhat.com>
Reported-by: Jay Shin <jaeshin@redhat.com>
Signed-off-by: Paulo Alcantara (Red Hat) <pc@manguebit.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull SoC fixes from Arnd Bergmann:
"The majority of these last fixes are for devicetree files.
These address two important regressions for the Qualcomm SMMU and the
Raspberry Pi 4 USB controller, as well as a larger number of patches
fixing minor mistakes in board specific files for Rockchips, i.MX,
starfive and broadcom.
The non-DT changes are
- A fix for an old boot regression on Renesas shmobile chips
- Another boot time regression for for the Qualcomm PDR SoC driver,
among a few other Qualcomm firmware driver fixes for efivars and
tzmem
- Minor Kconfig fixes for davinci and OMAP1
- Minor code fixes for sparx5 reset controllers, OMAP memory
controller, i.MX SCU, cpufreq and SoC drivers and a Hisilicon SoC
driver
- One more update to the Asahi maintainers, adding Neal Gompa as a
reviewer"
* tag 'soc-fixes-6.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (35 commits)
ARM: davinci: da850: fix selecting ARCH_DAVINCI_DA8XX
soc: hisilicon: kunpeng_hccs: Fix incorrect string assembly
memory: omap-gpmc: drop no compatible check
reset: mchp: sparx5: Fix for lan966x
ARM: shmobile: smp: Enforce shmobile_smp_* alignment
MAINTAINERS: Add myself (Neal Gompa) as a reviewer for ARM Apple support
MAINTAINERS: Add apple-spi driver & binding files
arm64: dts: rockchip: slow down emmc freq for rock 5 itx
ARM: dts: BCM5301X: Fix switch port labels of ASUS RT-AC3200
ARM: dts: BCM5301X: Fix switch port labels of ASUS RT-AC5300
ARM: dts: bcm2711: Don't mark timer regs unconfigured
ARM: OMAP1: select CONFIG_GENERIC_IRQ_CHIP
arm64: dts: rockchip: Add missing PCIe supplies to RockPro64 board dtsi
arm64: dts: rockchip: Add avdd HDMI supplies to RockPro64 board dtsi
arm64: dts: rockchip: Remove undocumented sdmmc property from lubancat-1
arm64: dts: rockchip: fix pinmux of UART5 for PX30 Ringneck on Haikou
arm64: dts: rockchip: fix pinmux of UART0 for PX30 Ringneck on Haikou
arm64: dts: rockchip: fix u2phy1_host status for NanoPi R4S
arm64: dts: bcm2712: PL011 UARTs are actually r1p5
ARM: dts: bcm2711: PL011 UARTs are actually r1p5
...
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git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull probes fixes from Masami Hiramatsu:
- Clean up tprobe correctly when module unload
Tracepoint probes do not set TRACEPOINT_STUB on the 'tpoint' pointer
when unloading a module, thus they show as a normal 'fprobe' instead
of 'tprobe' and never come back
- Fix leakage of tprobe module refcount
When a tprobe's target module is loaded, it gets the module's
refcount in the module notifier but forgot to put it after
registering the probe on it.
Fix it by getting the refcount only when registering tprobe.
* tag 'probes-fixes-v6.14-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
tracing: tprobe-events: Fix leakage of module refcount
tracing: tprobe-events: Fix to clean up tprobe correctly when module unload
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Merge series from Takashi Iwai <tiwai@suse.de>:
This is a revised series of small and trivial patches to convert to
the newer PM macros, e.g. from SET_RUNTIME_PM_OPS() to
RUNTIME_PM_OPS().
The conversions are systematic, and we could reduce messy
__maybe_unused and ifdefs with those changes.
Merely code refactoring, and shouldn't change the actual driver
behavior.
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'net-stmmac-avoid-unnecessary-work-in-stmmac_release-stmmac_dvr_remove'
Russell King says:
====================
net: stmmac: avoid unnecessary work in stmmac_release()/stmmac_dvr_remove()
This small series is a subset of a RFC I sent earlier. These two
patches remove code that is unnecessary and/or wrong in these paths.
Details in each commit.
====================
Link: https://patch.msgid.link/Z87bpDd7QYYVU0ML@shell.armlinux.org.uk
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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stmmac_release() calls phylink_stop() and then goes on to call
stmmac_mac_set(, false). However, phylink_stop() will call
stmmac_mac_link_down() before returning, which will do this work.
Remove this unnecessary call.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Furong Xu <0x1207@gmail.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1trcI6-005rn8-GV@rmk-PC.armlinux.org.uk
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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While the network device is registered, it is published to userspace,
and thus userspace can change its state. This means calling
functions such as stmmac_stop_all_dma() and stmmac_mac_set() are
racy.
Moreover, unregister_netdev() will unpublish the network device, and
then if appropriate call the .ndo_stop() method, which is
stmmac_release(). This will first call phylink_stop() which will
synchronously take the link down, resulting in stmmac_mac_link_down()
and stmmac_mac_set(, false) being called.
stmmac_release() will also call stmmac_stop_all_dma().
Consequently, neither of these two functions need to called prior
to unregister_netdev() as that will safely call paths that will
result in this work being done if necessary.
Remove these redundant racy calls.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Furong Xu <0x1207@gmail.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1trcI1-005rn2-CZ@rmk-PC.armlinux.org.uk
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Expand on the requirements of the .pcs_config() method documentation,
specifically mentioning that it should cause minimal disruption to
an established link, and that it should return a positive non-zero
value when requiring the .pcs_an_restart() method to be called.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1trb24-005oVq-Is@rmk-PC.armlinux.org.uk
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Lenovo ThinkPad Hybrid USB-C with USB-A Dock (17ef:a359) is affected by
the same problem as the Lenovo Powered USB-C Travel Hub (17ef:721e):
Both are based on the Realtek RTL8153B chip used to use the cdc_ether
driver. However, using this driver, with the system suspended the device
constantly sends pause-frames as soon as the receive buffer fills up.
This causes issues with other devices, where some Ethernet switches stop
forwarding packets altogether.
Using the Realtek driver (r8152) fixes this issue. Pause frames are no
longer sent while the host system is suspended.
Cc: Leon Schuermann <leon@is.currently.online>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Oliver Neukum <oliver@neukum.org> (maintainer:USB CDC ETHERNET DRIVER)
Cc: netdev@vger.kernel.org (open list:NETWORKING DRIVERS)
Link: https://git.kernel.org/netdev/net/c/cb82a54904a9
Link: https://git.kernel.org/netdev/net/c/2284bbd0cf39
Link: https://www.lenovo.com/de/de/p/accessories-and-software/docking/docking-usb-docks/40af0135eu
Signed-off-by: Philipp Hahn <phahn-oss@avm.de>
Reviewed-by: Kory Maincent <kory.maincent@bootlin.com>
Link: https://patch.msgid.link/484336aad52d14ccf061b535bc19ef6396ef5120.1741601523.git.p.hahn@avm.de
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Retrieve the netif_wildcard policy capability in security_netif_sid()
from the locked active policy instead of the cached value in
selinux_state.
Fixes: 8af43b61c17e ("selinux: support wildcard network interface names")
Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
Acked-by: Stephen Smalley <stephen.smalley.work@gmail.com>
[PM: /netlabel/netif/ due to a typo in the description]
Signed-off-by: Paul Moore <paul@paul-moore.com>
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Merge series from Charles Keepax <ckeepax@opensource.cirrus.com>:
Make some small fixups and add some minor missing features that will be
needed for the next major part of the SDCA work. This series doesn't do
a lot on its own, but as the next series will add all the ALSA control
and DAPM graph creation it's probably best to get these minor things out
of the way to simplify review on the bigger stuff.
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intel_tsn_lane_is_available()
Fix the warning "warn: missing error code? 'ret'" in the
intel_tsn_lane_is_available() function.
The function now returns 0 to indicate that a TSN lane was found and
returns -EINVAL when it is not found.
Fixes: a42f6b3f1cc1 ("net: stmmac: configure SerDes according to the interface mode")
Signed-off-by: Choong Yong Liang <yong.liang.choong@linux.intel.com>
Reviewed-by: Kory Maincent <kory.maincent@bootlin.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250310050835.808870-1-yong.liang.choong@linux.intel.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge series from Andy Shevchenko <andriy.shevchenko@linux.intel.com>:
The driver has one ordering issue and one missed case for dev_err_probe().
Address that in this mini-series.
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Merge series from Linus Walleij <linus.walleij@linaro.org>:
Three remaining TI PCM codecs use the old GPIO API in
different ways, fix them all up and move over to
<linux/gpio/consumer.h> and get rid of <linux/gpio.h>.
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Add TI INA233 Current and Power Monitor bindings.
Signed-off-by: Leo Yang <leo.yang.sy0@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250116085939.1235598-2-leo.yang.sy0@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Add support for the Congatec Board Controller. This controller exposes
temperature, voltage, current and fan sensors.
The available sensors list cannot be predicted. Some sensors can be
present or not, depending the system.
The driver has an internal list of all possible sensors, for all Congatec
boards. The Board Controller gives to the driver its sensors list, and
their status (active or not).
Signed-off-by: Thomas Richard <thomas.richard@bootlin.com>
Link: https://lore.kernel.org/r/20250203-congatec-board-controller-hwmon-v4-1-ff6c76a4662c@bootlin.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Merge series from "Nícolas F. R. A. Prado" <nfraprado@collabora.com>:
This series enables the MT8188-MT6359 sound driver to retrieve the
MT6359 ACCDET sound component from a mediatek,accdet DT property, which
allows detecting jack insertion/removal.
Patch 1 describes the new property in the binding. Patch 2 implements
the sound component retrieval in the common MTK soundcard driver. Patch
4 updates the MT8188-MT6359 sound driver to register the audio jack and
initialize the ACCDET driver for detection, if the property is present.
Patch 3 adds a stub to prevent a linker failure in case the
MT6359-ACCDET config is disabled.
Tested on the Genio 700 EVK board.
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Heiner Kallweit says:
====================
net: phy: clean up PHY package MMD access functions
Move declarations of the functions with users to phylib.h, and remove
unused functions.
====================
Link: https://patch.msgid.link/b624fcb7-b493-461a-a0b5-9ca7e9d767bc@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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These functions have never had a user, so remove them.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/5792e2cd-6f0a-4f7d-a5ef-b932f94d82f3@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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phylib.h
These functions are used by PHY drivers only, therefore move their
declaration to phylib.h.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/406c8a20-b62e-4ee3-b174-b566724a0876@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Tariq Toukan says:
====================
mlx5: Support HWS flow meter/sampler actions in FS core
This series by Moshe adds support for flow meter and flow sampler HW
Steering actions in FS core level. As these actions can be shared by
multiple rules, these patches use refcounts to manage the HWS actions
sharing in FS core level.
====================
Link: https://patch.msgid.link/1741543663-22123-1-git-send-email-tariqt@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Add support for HW Steering action of flow sampler destination. For each
flow sampler created cache the hws action by sampler id as a key. Hold
refcount for each rule using the cached action.
Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/1741543663-22123-4-git-send-email-tariqt@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Add support for HW Steering action of flow meter range. Flow meters
range can use one HWS action for the whole range. Thus, share a cached
HWS action among rules that use same flow meter object range. Hold
refcount for each rule using the cached action.
Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/1741543663-22123-3-git-send-email-tariqt@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Counters HWS actions are shared using refcount, to create action on
demand by flow steering rule and destroy only when no rules are using
the action. The method is extensible to other HWS action types, such as
flow meter and sampler actions, in the downstream patches.
Add an API to facilitate the reuse of get/put logic for HWS actions
shared by refcount.
Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/1741543663-22123-2-git-send-email-tariqt@nvidia.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Replace kvm_pmu_vcpu_reset() with the generic PMU reloading mechanism to
ensure the consistency with system registers and to reduce code size.
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20250315-pmc-v5-5-ecee87dab216@daynix.com
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
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Commit d0c94c49792c ("KVM: arm64: Restore PMU configuration on first
run") added the code to reload the PMU configuration on first run.
It is also important to keep the correct state even if system registers
are modified after first run, specifically when debugging Windows on
QEMU with GDB; QEMU tries to write back all visible registers when
resuming the VM execution with GDB, corrupting the PMU state. Windows
always uses the PMU so this can cause adverse effects on that particular
OS.
The usual register writes and reset are already handled independently,
but register writes from userspace are not covered.
Trigger the code to reload the PMU configuration for them instead so
that PMU configuration changes made by users will be applied also after
the first run.
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20250315-pmc-v5-4-ecee87dab216@daynix.com
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
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Reload the perf event when setting the vPMU counter (vPMC) registers
(PMCCNTR_EL0 and PMEVCNTR<n>_EL0). This is a change corresponding to
commit 9228b26194d1 ("KVM: arm64: PMU: Fix GET_ONE_REG
for vPMC regs to return the current value") but for SET_ONE_REG.
Values of vPMC registers are saved in sysreg files on certain occasions.
These saved values don't represent the current values of the vPMC
registers if the perf events for the vPMCs count events after the save.
The current values of those registers are the sum of the sysreg file
value and the current perf event counter value. But, when userspace
writes those registers (using KVM_SET_ONE_REG), KVM only updates the
sysreg file value and leaves the current perf event counter value as is.
It is also important to keep the correct state even if userspace writes
them after first run, specifically when debugging Windows on QEMU with
GDB; QEMU tries to write back all visible registers when resuming the VM
execution with GDB, corrupting the PMU state. Windows always uses the
PMU so this can cause adverse effects on that particular OS.
Fix this by releasing the current perf event and trigger recreating one
with KVM_REQ_RELOAD_PMU.
Fixes: 051ff581ce70 ("arm64: KVM: Add access handler for event counter register")
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20250315-pmc-v5-3-ecee87dab216@daynix.com
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
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Many functions in pmu-emul.c checks kvm_vcpu_has_pmu(vcpu). A favorable
interpretation is defensive programming, but it also has downsides:
- It is confusing as it implies these functions are called without PMU
although most of them are called only when a PMU is present.
- It makes semantics of functions fuzzy. For example, calling
kvm_pmu_disable_counter_mask() without PMU may result in no-op as
there are no enabled counters, but it's unclear what
kvm_pmu_get_counter_value() returns when there is no PMU.
- It allows callers without checking kvm_vcpu_has_pmu(vcpu), but it is
often wrong to call these functions without PMU.
- It is error-prone to duplicate kvm_vcpu_has_pmu(vcpu) checks into
multiple functions. Many functions are called for system registers,
and the system register infrastructure already employs less
error-prone, comprehensive checks.
Check kvm_vcpu_has_pmu(vcpu) in callers of these functions instead,
and remove the obsolete checks from pmu-emul.c. The only exceptions are
the functions that implement ioctls as they have definitive semantics
even when the PMU is not present.
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20250315-pmc-v5-2-ecee87dab216@daynix.com
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
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PMOVS{SET,CLR}
Commit a45f41d754e0 ("KVM: arm64: Add {get,set}_user for
PM{C,I}NTEN{SET,CLR}, PMOVS{SET,CLR}") changed KVM_SET_ONE_REG to update
the mentioned registers in a way matching with the behavior of guest
register writes. This is a breaking change of a UAPI though the new
semantics looks cleaner and VMMs are not prepared for this.
Firecracker, QEMU, and crosvm perform migration by listing registers
with KVM_GET_REG_LIST, getting their values with KVM_GET_ONE_REG and
setting them with KVM_SET_ONE_REG. This algorithm assumes
KVM_SET_ONE_REG restores the values retrieved with KVM_GET_ONE_REG
without any alteration. However, bit operations added by the earlier
commit do not preserve the values retried with KVM_GET_ONE_REG and
potentially break migration.
Remove the bit operations that alter the values retrieved with
KVM_GET_ONE_REG.
Cc: stable@vger.kernel.org
Fixes: a45f41d754e0 ("KVM: arm64: Add {get,set}_user for PM{C,I}NTEN{SET,CLR}, PMOVS{SET,CLR}")
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20250315-pmc-v5-1-ecee87dab216@daynix.com
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
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Don't populate the const read-only array fault_mask on the stack at run
time, instead make it static.
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://patch.msgid.link/20250317165845.525593-1-colin.i.king@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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syzbot warns about a potential deadlock, but this is a false positive
resulting from a missing lockdep annotation: iterate_dir() locks the
parent whereas the inode_lock() it warns about locks the child, which is
guaranteed to be a different lock.
So use inode_lock_nested() instead with the appropriate lock class.
Reported-by: syzbot+019072ad24ab1d948228@syzkaller.appspotmail.com
Suggested-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
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The ASoC soc-utils driver does not require the creation of a platform
device. Originally, this approach was chosen for simplicity when the
driver was first implemented.
With the introduction of the lightweight faux device interface, we now
have a more appropriate alternative. Migrate the driver to utilize the
faux bus, given that the platform device it previously created was not
a real one anyway. This will simplify the code, reducing its footprint
while maintaining functionality.
Cc: Mark Brown <broonie@kernel.org>
Cc: Takashi Iwai <tiwai@suse.com>
Cc: linux-sound@vger.kernel.org
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Link: https://patch.msgid.link/20250317-plat2faux_dev-v1-6-5fe67c085ad5@arm.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Introduce the 'widgets' property, allowing the creation of widgets from
4 template widgets: Microphone, Line, Headphone, and Speaker. Also
introduce the 'hp-det-gpios' property, which allows using headphone
detection using the specified GPIO.
Signed-off-by: Laurentiu Mihalcea <laurentiu.mihalcea@nxp.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Iuliana Prodan <iuliana.prodan@nxp.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Link: https://patch.msgid.link/20250311163255.2664-3-laurentiumihalcea111@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Add binding for imx95's CM7 core, used for audio processing.
Additionally, introduce a common binding for NXP audio processors with
Sound Open Firmware (SOF) support.
Signed-off-by: Laurentiu Mihalcea <laurentiu.mihalcea@nxp.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Iuliana Prodan <iuliana.prodan@nxp.com>
Link: https://patch.msgid.link/20250311163255.2664-2-laurentiumihalcea111@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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Add support for LT7170 and LT7171. The LT7170 and LT7171 are 20 A, 16 V,
Single- or Dual-Phase, Silent Switcher Step-Down Regulators with Digital
Power System Management.
The relevant registers in the LT7170 and LT7171 are similar to those in
the LTC3887, but with fewer channels. This adds the chip ID and
identification of ASCII to differentiate between the LT7170 and LT7171.
These devices support polling for status updates and clearing peak
values. The data format for voltage, current, and temperature is set to
IEEE754 for precision and compatibility.
Co-developed-by: Cherrence Sarip <cherrence.sarip@analog.com>
Signed-off-by: Cherrence Sarip <cherrence.sarip@analog.com>
Signed-off-by: Kim Seer Paller <kimseer.paller@analog.com>
Link: https://lore.kernel.org/r/20250317-hwmon-next-v1-3-da0218c38197@analog.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Add LTC7170 and LT7171 to supported devices of LTC2978. It has similar
set of registers to LTC3887, differing only in number of channels and
some PMBUS status and functionalities.
Co-developed-by: Cherrence Sarip <cherrence.sarip@analog.com>
Signed-off-by: Cherrence Sarip <cherrence.sarip@analog.com>
Signed-off-by: Kim Seer Paller <kimseer.paller@analog.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250317-hwmon-next-v1-2-da0218c38197@analog.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Add LT7170 and LT7171 to compatible devices of LTC2978.
Co-developed-by: Cherrence Sarip <cherrence.sarip@analog.com>
Signed-off-by: Cherrence Sarip <cherrence.sarip@analog.com>
Signed-off-by: Kim Seer Paller <kimseer.paller@analog.com>
Link: https://lore.kernel.org/r/20250317-hwmon-next-v1-1-da0218c38197@analog.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Adding the writel() calls needs io.h, which apparently gets
transiently included somewhere on arm64, but not elsewhere.
Fixes: 6de0298a3925 ("perf/arm_cspmu: Generalise event filtering")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202503150649.Dol8RBSh-lkp@intel.com/
Closes: https://lore.kernel.org/oe-kbuild-all/202503152245.cAG4FMfi-lkp@intel.com/
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/657935ca177024ad08d5ec6f85e8faf75f82cf65.1742212833.git.robin.murphy@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
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Chia-Yu Chang says:
====================
AccECN protocol preparation patch series
Please find the v7
v7 (03-Mar-2025)
- Move 2 new patches added in v6 to the next AccECN patch series
v6 (27-Dec-2024)
- Avoid removing removing the potential CA_ACK_WIN_UPDATE in ack_ev_flags of patch #1 (Eric Dumazet <edumazet@google.com>)
- Add reviewed-by tag in patches #2, #3, #4, #5, #6, #7, #8, #12, #14
- Foloiwng 2 new pathces are added after patch #9 (Patch that adds SKB_GSO_TCP_ACCECN)
* New patch #10 to replace exisiting SKB_GSO_TCP_ECN with SKB_GSO_TCP_ACCECN in the driver to avoid CWR flag corruption
* New patch #11 adds AccECN for virtio by adding new negotiation flag (VIRTIO_NET_F_HOST/GUEST_ACCECN) in feature handshake and translating Accurate ECN GSO flag between virtio_net_hdr (VIRTIO_NET_HDR_GSO_ACCECN) and skb header (SKB_GSO_TCP_ACCECN)
- Add detailed changelog and comments in #13 (Eric Dumazet <edumazet@google.com>)
- Move patch #14 to the next AccECN patch series (Eric Dumazet <edumazet@google.com>)
v5 (5-Nov-2024)
- Add helper function "tcp_flags_ntohs" to preserve last 2 bytes of TCP flags of patch #4 (Paolo Abeni <pabeni@redhat.com>)
- Fix reverse X-max tree order of patches #4, #11 (Paolo Abeni <pabeni@redhat.com>)
- Rename variable "delta" as "timestamp_delta" of patch #2 fo clariety
- Remove patch #14 in this series (Paolo Abeni <pabeni@redhat.com>, Joel Granados <joel.granados@kernel.org>)
v4 (21-Oct-2024)
- Fix line length warning of patches #2, #4, #8, #10, #11, #14
- Fix spaces preferred around '|' (ctx:VxV) warning of patch #7
- Add missing CC'ed of patches #4, #12, #14
v3 (19-Oct-2024)
- Fix build error in v2
v2 (18-Oct-2024)
- Fix warning caused by NETIF_F_GSO_ACCECN_BIT in patch #9 (Jakub Kicinski <kuba@kernel.org>)
The full patch series can be found in
https://github.com/L4STeam/linux-net-next/commits/upstream_l4steam/
The Accurate ECN draft can be found in
https://datatracker.ietf.org/doc/html/draft-ietf-tcpm-accurate-ecn-28
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Accurate ECN needs to send custom flags to handle IP-ECN
field reflection during handshake.
Signed-off-by: Ilpo Järvinen <ij@kernel.org>
Signed-off-by: Chia-Yu Chang <chia-yu.chang@nokia-bell-labs.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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ECN bits in TOS are always cleared when sending in ACKs in TW. Clearing
them is problematic for TCP flows that used Accurate ECN because ECN bits
decide which service queue the packet is placed into (L4S vs Classic).
Effectively, TW ACKs are always downgraded from L4S to Classic queue
which might impact, e.g., delay the ACK will experience on the path
compared with the other packets of the flow.
Change the TW ACK sending code to differentiate:
- In tcp_v4_send_reset(), commit ba9e04a7ddf4f ("ip: fix tos reflection
in ack and reset packets") cleans ECN bits for TW reset and this is
not affected.
- In tcp_v4_timewait_ack(), ECN bits for all TW ACKs are cleaned. But now
only ECN bits of ACKs for oow data or paws_reject are cleaned, and ECN
bits of other ACKs will not be cleaned.
- In tcp_v4_reqsk_send_ack(), commit 66b13d99d96a1 ("ipv4: tcp: fix TOS
value in ACK messages sent from TIME_WAIT") did not clean ECN bits of
ACKs for oow data or paws_reject. But now the ECN bits rae cleaned for
these ACKs.
Signed-off-by: Ilpo Järvinen <ij@kernel.org>
Signed-off-by: Chia-Yu Chang <chia-yu.chang@nokia-bell-labs.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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AE flag needs to be preserved for AccECN.
Signed-off-by: Ilpo Järvinen <ij@kernel.org>
Signed-off-by: Chia-Yu Chang <chia-yu.chang@nokia-bell-labs.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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