Add field reporting the GCIE feature to ID_AA64PFR2_EL1 sysreg.
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Cc: Will Deacon <will@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Marc Zyngier <maz@kernel.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://lore.kernel.org/r/20250703-gicv5-host-v7-2-12e71f1b3528@kernel.org
Signed-off-by: Marc Zyngier <maz@kernel.org>
The GICv5 interrupt controller architecture is composed of:
- one or more Interrupt Routing Service (IRS)
- zero or more Interrupt Translation Service (ITS)
- zero or more Interrupt Wire Bridge (IWB)
Describe a GICv5 implementation by specifying a top level node
corresponding to the GICv5 system component.
IRS nodes are added as GICv5 system component children.
An ITS is associated with an IRS so ITS nodes are described
as IRS children - use the hierarchy explicitly in the device
tree to define the association.
IWB nodes are described as a separate schema.
An IWB is connected to a single ITS, the connection is made explicit
through the msi-parent property and therefore is not required to be
explicit through a parent-child relationship in the device tree.
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Cc: Conor Dooley <conor+dt@kernel.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Krzysztof Kozlowski <krzk+dt@kernel.org>
Cc: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20250703-gicv5-host-v7-1-12e71f1b3528@kernel.org
Signed-off-by: Marc Zyngier <maz@kernel.org>
The variable 'type' is assigned the value SI_INVALID which is zero
and later checks of 'type' is non-zero (which is always false). The
variable is not referenced anywhere else, so it is redundant and
so is the check, so remove these.
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Message-ID: <20250708151805.1893858-1-colin.i.king@gmail.com>
Signed-off-by: Corey Minyard <corey@minyard.net>
This reverts commit 6f11adcc6f.
The problematic commit was fixed in mainline, so the work-around in
io_uring can be removed at this point. Anonymous inodes no longer
pretend to be regular files after:
1e7ab6f678 ("anon_inode: rework assertions")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
syzbot reports that defer/local task_work adding via msg_ring can hit
a request that has been freed:
CPU: 1 UID: 0 PID: 19356 Comm: iou-wrk-19354 Not tainted 6.16.0-rc4-syzkaller-00108-g17bbde2e1716 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
<TASK>
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
print_address_description mm/kasan/report.c:408 [inline]
print_report+0xd2/0x2b0 mm/kasan/report.c:521
kasan_report+0x118/0x150 mm/kasan/report.c:634
io_req_local_work_add io_uring/io_uring.c:1184 [inline]
__io_req_task_work_add+0x589/0x950 io_uring/io_uring.c:1252
io_msg_remote_post io_uring/msg_ring.c:103 [inline]
io_msg_data_remote io_uring/msg_ring.c:133 [inline]
__io_msg_ring_data+0x820/0xaa0 io_uring/msg_ring.c:151
io_msg_ring_data io_uring/msg_ring.c:173 [inline]
io_msg_ring+0x134/0xa00 io_uring/msg_ring.c:314
__io_issue_sqe+0x17e/0x4b0 io_uring/io_uring.c:1739
io_issue_sqe+0x165/0xfd0 io_uring/io_uring.c:1762
io_wq_submit_work+0x6e9/0xb90 io_uring/io_uring.c:1874
io_worker_handle_work+0x7cd/0x1180 io_uring/io-wq.c:642
io_wq_worker+0x42f/0xeb0 io_uring/io-wq.c:696
ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
</TASK>
which is supposed to be safe with how requests are allocated. But msg
ring requests alloc and free on their own, and hence must defer freeing
to a sane time.
Add an rcu_head and use kfree_rcu() in both spots where requests are
freed. Only the one in io_msg_tw_complete() is strictly required as it
has been visible on the other ring, but use it consistently in the other
spot as well.
This should not cause any other issues outside of KASAN rightfully
complaining about it.
Link: https://lore.kernel.org/io-uring/686cd2ea.a00a0220.338033.0007.GAE@google.com/
Reported-by: syzbot+54cbbfb4db9145d26fc2@syzkaller.appspotmail.com
Cc: stable@vger.kernel.org
Fixes: 0617bb500b ("io_uring/msg_ring: improve handling of target CQE posting")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
The minimum interval specified the PMSIDR_EL1.Interval field is a
hardware recommendation. However, this value is set by hardware designer
before the production. It is not actual hardware limitation but tools
currently have no way to test shorter periods.
This change relaxes the limitation by allowing any non-zero periods,
with simplifying code with clamp_t().
The downside is that small periods may increase the risk of AUX ring
buffer overruns. When an overrun occurs, the perf core layer will
trigger an irq work to disable the event and wake up the tool in user
space to read the trace data. After the tool finishes reading, it will
re-enable the AUX event.
Signed-off-by: Leo Yan <leo.yan@arm.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Link: https://lore.kernel.org/r/20250627163028.3503122-1-leo.yan@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
The ARMv9.2 architecture introduces the optional Branch Record Buffer
Extension (BRBE), which records information about branches as they are
executed into set of branch record registers. BRBE is similar to x86's
Last Branch Record (LBR) and PowerPC's Branch History Rolling Buffer
(BHRB).
BRBE supports filtering by exception level and can filter just the
source or target address if excluded to avoid leaking privileged
addresses. The h/w filter would be sufficient except when there are
multiple events with disjoint filtering requirements. In this case, BRBE
is configured with a union of all the events' desired branches, and then
the recorded branches are filtered based on each event's filter. For
example, with one event capturing kernel events and another event
capturing user events, BRBE will be configured to capture both kernel
and user branches. When handling event overflow, the branch records have
to be filtered by software to only include kernel or user branch
addresses for that event. In contrast, x86 simply configures LBR using
the last installed event which seems broken.
It is possible on x86 to configure branch filter such that no branches
are ever recorded (e.g. -j save_type). For BRBE, events with a
configuration that will result in no samples are rejected.
Recording branches in KVM guests is not supported like x86. However,
perf on x86 allows requesting branch recording in guests. The guest
events are recorded, but the resulting branches are all from the host.
For BRBE, events with branch recording and "exclude_host" set are
rejected. Requiring "exclude_guest" to be set did not work. The default
for the perf tool does set "exclude_guest" if no exception level
options are specified. However, specifying kernel or user events
defaults to including both host and guest. In this case, only host
branches are recorded.
BRBE can support some additional exception branch types compared to
x86. On x86, all exceptions other than syscalls are recorded as IRQ.
With BRBE, it is possible to better categorize these exceptions. One
limitation relative to x86 is we cannot distinguish a syscall return
from other exception returns. So all exception returns are recorded as
ERET type. The FIQ branch type is omitted as the only FIQ user is Apple
platforms which don't support BRBE. The debug branch types are omitted
as there is no clear need for them.
BRBE records are invalidated whenever events are reconfigured, a new
task is scheduled in, or after recording is paused (and the records
have been recorded for the event). The architecture allows branch
records to be invalidated by the PE under implementation defined
conditions. It is expected that these conditions are rare.
Cc: Catalin Marinas <catalin.marinas@arm.com>
Co-developed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Co-developed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: James Clark <james.clark@linaro.org>
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
tested-by: Adam Young <admiyo@os.amperecomputing.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20250611-arm-brbe-v19-v23-4-e7775563036e@kernel.org
[will: Fix sparse warnings about mixed declarations and code.
Fix C99 comment syntax.]
Signed-off-by: Will Deacon <will@kernel.org>
Move the source to a better place in Device Drivers -> Graphics support
now that its configurable.
v4:
- Move source location (Tvrtko)
v3:
- Patch introduced to replace per-driver config (Lucas)
Signed-off-by: Juston Li <justonli@chromium.org>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://lore.kernel.org/r/20250611225145.1739201-1-justonli@chromium.org
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Enable CONFIG_PWM and CONFIG_PWM_PXA in the defconfig
to support the PWM controller used on the SpacemiT K1 SoC.
Signed-off-by: Guodong Xu <guodong@riscstar.com>
Reviewed-by: Yixun Lan <dlan@gentoo.org>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
The SND_SOC_STARFIVE Kconfig symbol was removed, but it is still enabled
in the RISC-V defconfig. Just remove it, as it is no longer needed.
Fixes: acc317e525 ("ASoC: starfive: Standardize ASoC menu")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
If ksmbd_iov_pin_rsp return error, use-after-free can happen by
accessing opinfo->state and opinfo_put and ksmbd_fd_put could
called twice.
Reported-by: Ziyan Xu <research@securitygossip.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
If the call of ksmbd_vfs_lock_parent() fails, we drop the parent_path
references and return an error. We need to drop the write access we
just got on parent_path->mnt before we drop the mount reference - callers
assume that ksmbd_vfs_kern_path_locked() returns with mount write
access grabbed if and only if it has returned 0.
Fixes: 864fb5d371 ("ksmbd: fix possible deadlock in smb2_open")
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
The qp is created by rdma_create_qp() as t->cm_id->qp
and t->qp is just a shortcut.
rdma_destroy_qp() also calls ib_destroy_qp(cm_id->qp) internally,
but it is protected by a mutex, clears the cm_id and also calls
trace_cm_qp_destroy().
This should make the tracing more useful as both
rdma_create_qp() and rdma_destroy_qp() are traces and it makes
the code look more sane as functions from the same layer are used
for the specific qp object.
trace-cmd stream -e rdma_cma:cm_qp_create -e rdma_cma:cm_qp_destroy
shows this now while doing a mount and unmount from a client:
<...>-80 [002] 378.514182: cm_qp_create: cm.id=1 src=172.31.9.167:5445 dst=172.31.9.166:37113 tos=0 pd.id=0 qp_type=RC send_wr=867 recv_wr=255 qp_num=1 rc=0
<...>-6283 [001] 381.686172: cm_qp_destroy: cm.id=1 src=172.31.9.167:5445 dst=172.31.9.166:37113 tos=0 qp_num=1
Before we only saw the first line.
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: Steve French <stfrench@microsoft.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Hyunchul Lee <hyc.lee@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: linux-cifs@vger.kernel.org
Fixes: 0626e6641f ("cifsd: add server handler for central processing and tranport layers")
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Tom Talpey <tom@talpey.com>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
The datasheets refer to the first Ethernet controller as GMAC0, not
EMAC0.
Fix the compatible string, node label and pinmux function name to match
what the datasheets use. A change to the device tree binding is sent
separately.
Fixes: 56766ca6c4 ("arm64: dts: allwinner: a523: Add EMAC0 ethernet MAC")
Fixes: acca163f3f ("arm64: dts: allwinner: a527: add EMAC0 to Radxa A5E board")
Fixes: c6800f1599 ("arm64: dts: allwinner: t527: add EMAC0 to Avaota-A1 board")
Link: https://patch.msgid.link/20250628054438.2864220-3-wens@kernel.org
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Vhost net need to know the exact virtio net hdr size to be able
to copy such header correctly. Teach it about the newly defined
UDP tunnel-related option and update the hdr size computation
accordingly.
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Add new tun features to represent the newly introduced virtio
GSO over UDP tunnel offload. Allows detection and selection of
such features via the existing TUNSETOFFLOAD ioctl and compute
the expected virtio header size and tunnel header offset using
the current netdev features, so that we can plug almost seamless
the newly introduced virtio helpers to serialize the extended
virtio header.
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
v6 -> v7:
- rebased
v4 -> v5:
- encapsulate the guest feature guessing in a tun helper
- dropped irrelevant check on xdp buff headroom
- do not remove unrelated black line
- avoid line len > 80 char
v3 -> v4:
- virtio tnl-related fields are at fixed offset, cleanup
the code accordingly.
- use netdev features instead of flags bit to check for
the configured offload
- drop packet in case of enabled features/configured hdr
size mismatch
v2 -> v3:
- cleaned-up uAPI comments
- use explicit struct layout instead of raw buf.
If the related virtio feature is set, enable transmission and reception
of gso over UDP tunnel packets.
Most of the work is done by the previously introduced helper, just need
to determine the UDP tunnel features inside the virtio_net_hdr and
update accordingly the virtio net hdr size.
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
The virtio specification are introducing support for GSO over UDP
tunnel.
This patch brings in the needed defines and the additional virtio hdr
parsing/building helpers.
The UDP tunnel support uses additional fields in the virtio hdr, and such
fields location can change depending on other negotiated features -
specifically VIRTIO_NET_F_HASH_REPORT.
Try to be as conservative as possible with the new field validation.
Existing implementation for plain GSO offloads allow for invalid/
self-contradictory values of such fields. With GSO over UDP tunnel we can
be more strict, with no need to deal with legacy implementation.
Since the checksum-related field validation is asymmetric in the driver
and in the device, introduce a separate helper to implement the new checks
(to be used only on the driver side).
Note that while the feature space exceeds the 64-bit boundaries, the
guest offload space is fixed by the specification of the
VIRTIO_NET_CTRL_GUEST_OFFLOADS_SET command to a 64-bit size.
Prior to the UDP tunnel GSO support, each guest offload bit corresponded
to the feature bit with the same value and vice versa.
Due to the limited 'guest offload' space, relevant features in the high
64 bits are 'mapped' to free bits in the lower range. That is simpler
than defining a new command (and associated features) to exchange an
extended guest offloads set.
As a consequence, the uAPIs also specify the mapped guest offload value
corresponding to the UDP tunnel GSO features.
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
--
v4 -> v5:
- avoid lines above 80 chars
v3 -> v4:
- fixed offset for UDP GSO tunnel, update accordingly the helpers
- tried to clarified vlan_hlen semantic
- virtio_net_chk_data_valid() -> virtio_net_handle_csum_offload()
v2 -> v3:
- add definitions for possible vnet hdr layouts with tunnel support
v1 -> v2:
- 'relay' -> 'rely' typo
- less unclear comment WRT enforced inner GSO checks
- inner header fields are allowed only with 'modern' virtio,
thus are always le
- clarified in the commit message the need for 'mapped features'
defines
- assume little_endian is true when UDP GSO is enabled.
- fix inner proto type value
The virtio_net driver needs it to implement GSO over UDP tunnel
offload.
The only missing piece is mapping them to/from the extended
features.
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Use the extended feature type for 'acked_features' and implement
two new ioctls operation allowing the user-space to set/query an
unbounded amount of features.
The actual number of processed features is limited by VIRTIO_FEATURES_MAX
and attempts to set features above such limit fail with
EOPNOTSUPP.
Note that: the legacy ioctls implicitly truncate the negotiated
features to the lower 64 bits range and the 'acked_backend_features'
field don't need conversion, as the only negotiated feature there
is in the low 64 bit range.
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
The virtio specifications allows for up to 128 bits for the
device features. Soon we are going to use some of the 'extended'
bits features (above 64) for the virtio_net driver.
Extend the virtio pci modern driver to support configuring the full
virtio features range, replacing the unrolled loops reading and
writing the features space with explicit one bounded to the actual
features space size in word and implementing the get_extended_features
callback.
Note that in vp_finalize_features() we only need to cache the lower
64 features bits, to process the transport features.
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
The virtio specifications allows for up to 128 bits for the
device features. Soon we are going to use some of the 'extended'
bits features (above 64) for the virtio_net driver.
Introduce extended features as a fixed size array of u64. To minimize
the diffstat allows legacy driver to access the low 64 bits via a
transparent union.
Introduce an extended get_extended_features configuration callback
that devices supporting the extended features range must implement in
place of the traditional one.
Note that legacy and transport features don't need any change, as
they are always in the low 64 bit range.
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
The mentioned macro introduce by the next patch will foul kdoc;
fully expand the mentioned macro to avoid the issue.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
As RACK-TLP was published as a standards-track RFC8985,
so the outdated ref draft-ietf-tcpm-rack need to be updated.
Signed-off-by: Xin Guo <guoxin0309@gmail.com>
Reviewed-by: Neal Cardwell <ncardwell@google.com>
Link: https://patch.msgid.link/20250705163647.301231-1-guoxin0309@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
If an error occurs after a successful airoha_hw_init() call,
airoha_ppe_deinit() needs to be called as already done in the remove
function.
Fixes: 00a7678310 ("net: airoha: Introduce flowtable offload support")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Simon Horman <horms@kernel.org>
Acked-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/1c940851b4fa3c3ed2a142910c821493a136f121.1746715755.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Now that we have an own config symbol for the PHY package module,
we can use it to reduce size of these structs if it isn't enabled.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://patch.msgid.link/f0daefa4-406a-4a06-a4f0-7e31309f82bc@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Refine qdisc_pkt_len_init to include headers up through
the inner transport header when computing header size
for encapsulations. Also refine net/sched/sch_cake.c
borrowed from qdisc_pkt_len_init().
Signed-off-by: Fengyuan Gong <gfengyuan@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://patch.msgid.link/20250702160741.1204919-1-gfengyuan@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Here are device-specific small fixes, including HD-audio, USB-audio
and ASoC Intel quirks, as well as ASoC fsl, Cirrus codec and the
legacy AD driver fixes. All look safe and easy.
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Merge tag 'sound-6.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Here are device-specific small fixes, including HD-audio, USB-audio
and ASoC Intel quirks, as well as ASoC fsl, Cirrus codec and the
legacy AD driver fixes.
All look safe and easy"
* tag 'sound-6.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda/realtek: Enable headset Mic on Positivo K116J
ALSA: hda/tas2781: Fix calibration data parser issue
ALSA: ad1816a: Fix potential NULL pointer deref in snd_card_ad1816a_pnp()
ASoC: cs35l56: probe() should fail if the device ID is not recognized
ALSA: hda/realtek: Add quirk for ASUS ExpertBook B9403CVAR
ASoC: Intel: sof_sdw: Add quirks for Lenovo P1 and P16
ALSA: usb-audio: Improve filtering of sample rates on Focusrite devices
ASoC: Intel: soc-acpi: arl: Correct order of cs42l43 matches
MAINTAINERS: update Qualcomm audio codec drivers list
ASoC: fsl_sai: Force a software reset when starting in consumer mode
ASoC: Intel: SND_SOC_INTEL_SOF_BOARD_HELPERS select SND_SOC_ACPI_INTEL_MATCH
ASoC: fsl_asrc: use internal measured ratio for non-ideal ratio mode
ALSA: hda/realtek - Add mute LED support for HP Victus 15-fb2xxx
ALSA: hda: Add missing NVIDIA HDA codec IDs
Configure FIFO thresholds according to the MAC controller documentation
Signed-off-by: Jijie Shao <shaojijie@huawei.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250702125716.2875169-4-shaojijie@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Adjust the burst len configuration of the MAC controller
to improve TX performance.
Signed-off-by: Jijie Shao <shaojijie@huawei.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250702125716.2875169-3-shaojijie@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Currently, the driver uses phylib to operate PHY by default.
On some boards, the PHY device is separated from the MAC device.
As a result, the hibmcge driver cannot operate the PHY device.
In this patch, the driver determines whether a PHY is available
based on register configuration. If no PHY is available,
the driver will use fixed_phy to register fake phydev.
Signed-off-by: Jijie Shao <shaojijie@huawei.com>
Reviewed-by: Larysa Zaremba <larysa.zaremba@intel.com>
Link: https://patch.msgid.link/20250702125716.2875169-2-shaojijie@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The all video ports of rk3568/rk3588 share the same OVL_LAYER_SEL
and OVL_PORT_SEL registers, and the configuration of these two registers
can be set to take effect when the vsync signal arrives at a certain Video
Port.
If two threads for two display output choose to update these two registers
simultaneously to meet their own plane adjustment requirements(change plane
zpos or switch plane from one crtc to another), then no matter which Video
Port'svsync signal we choose to follow for these two registers, the display
output of the other Video Port will be abnormal.
This is because the configuration of this Video Port does not take
effect at the right time (its configuration should take effect when its
VSYNC signal arrives).
In order to solve this problem, when performing plane migration or
change the zpos of planes, there are two things to be observed and
followed:
1. When a plane is migrated from one VP to another, the configuration of
the layer can only take effect after the Port mux configuration is
enabled.
2. When change the zpos of planes, we must ensure that the change for
the previous VP takes effect before we proceed to change the next VP.
Otherwise, the new configuration might overwrite the previous one for
the previous VP, or it could lead to the configuration of the previous
VP being take effect along with the VSYNC of the new VP.
This issue only occurs in scenarios where multi-display output is enabled.
Fixes: c5996e4ab1 ("drm/rockchip: vop2: Make overlay layer select register configuration take effect by vsync")
Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20250421102156.424480-1-andyshrk@163.com
Make use of devm_clk_get_enabled() to replace devm_clk_get() and
clk_prepare_enable(), which will make the cleanup of clk code simpler.
Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20250512124615.2848731-9-andyshrk@163.com
Switch from i2c_add_adapter() to resource managed
devm_i2c_add_adapter(), which will make the cleanup code more simpler.
Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20250512124615.2848731-8-andyshrk@163.com
Putting these scattered initialization code together is helpful
for the following migration to the DRM bridge driver mode.
Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20250512124615.2848731-6-andyshrk@163.com
This function not only configure hardware reset register, but also
do some other configurations. Therefore, it is more appropriate to
name it inno_hdmi_init_hw, which will also facilitate the addition
of other functions to this function in the following patch.
Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20250512124615.2848731-5-andyshrk@163.com
Support returning VMADDR_CID_LOCAL in case no other vsock transport is
available.
Fixes: 0e12190578 ("vsock: add local transport support in the vsock core")
Suggested-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Michal Luczaj <mhal@rbox.co>
Link: https://patch.msgid.link/20250703-vsock-transports-toctou-v4-3-98f0eb530747@rbox.co
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Transport assignment may race with module unload. Protect new_transport
from becoming a stale pointer.
This also takes care of an insecure call in vsock_use_local_transport();
add a lockdep assert.
BUG: unable to handle page fault for address: fffffbfff8056000
Oops: Oops: 0000 [#1] SMP KASAN
RIP: 0010:vsock_assign_transport+0x366/0x600
Call Trace:
vsock_connect+0x59c/0xc40
__sys_connect+0xe8/0x100
__x64_sys_connect+0x6e/0xc0
do_syscall_64+0x92/0x1c0
entry_SYSCALL_64_after_hwframe+0x4b/0x53
Fixes: c0cfa2d8a7 ("vsock: add multi-transports support")
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Michal Luczaj <mhal@rbox.co>
Link: https://patch.msgid.link/20250703-vsock-transports-toctou-v4-2-98f0eb530747@rbox.co
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
vsock_find_cid() and vsock_dev_do_ioctl() may race with module unload.
transport_{g2h,h2g} may become NULL after the NULL check.
Introduce vsock_transport_local_cid() to protect from a potential
null-ptr-deref.
KASAN: null-ptr-deref in range [0x0000000000000118-0x000000000000011f]
RIP: 0010:vsock_find_cid+0x47/0x90
Call Trace:
__vsock_bind+0x4b2/0x720
vsock_bind+0x90/0xe0
__sys_bind+0x14d/0x1e0
__x64_sys_bind+0x6e/0xc0
do_syscall_64+0x92/0x1c0
entry_SYSCALL_64_after_hwframe+0x4b/0x53
KASAN: null-ptr-deref in range [0x0000000000000118-0x000000000000011f]
RIP: 0010:vsock_dev_do_ioctl.isra.0+0x58/0xf0
Call Trace:
__x64_sys_ioctl+0x12d/0x190
do_syscall_64+0x92/0x1c0
entry_SYSCALL_64_after_hwframe+0x4b/0x53
Fixes: c0cfa2d8a7 ("vsock: add multi-transports support")
Suggested-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Michal Luczaj <mhal@rbox.co>
Link: https://patch.msgid.link/20250703-vsock-transports-toctou-v4-1-98f0eb530747@rbox.co
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Since its introduction in commit 6fa01ccd88 ("skbuff: Add pskb_extract()
helper function"), pskb_carve_frag_list() never used the argument @skb.
Drop it and adapt the only caller.
No functional change intended.
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Michal Luczaj <mhal@rbox.co>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Since its introduction in commit ce098da149 ("skbuff: Introduce
slab_build_skb()"), __slab_build_skb() never used the @skb argument. Remove
it and adapt both callers.
No functional change intended.
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Michal Luczaj <mhal@rbox.co>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Since its introduction in commit 2e910b9532 ("net: Add a function to
splice pages into an skbuff for MSG_SPLICE_PAGES"), skb_splice_from_iter()
never used the @gfp argument. Remove it and adapt callers.
No functional change intended.
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Michal Luczaj <mhal@rbox.co>
Link: https://patch.msgid.link/20250702-splice-drop-unused-v3-2-55f68b60d2b7@rbox.co
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Since commit 41c73a0d44 ("net: speedup skb_splice_bits()"),
__splice_segment() and spd_fill_page() do not use the @pipe argument. Drop
it.
While adapting the callers, move one line to enforce reverse xmas tree
order.
No functional change intended.
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Michal Luczaj <mhal@rbox.co>
Link: https://patch.msgid.link/20250702-splice-drop-unused-v3-1-55f68b60d2b7@rbox.co
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
