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current switch partition only check if kfd_processes_table is empty.
kfd_prcesses_table entry is deleted in kfd_process_notifier_release, but
kfd_process tear down is in kfd_process_wq_release.
consider two processes:
Process A (workqueue) -> kfd_process_wq_release -> Access kfd_node member
Process B switch partition -> amdgpu_xcp_pre_partition_switch -> amdgpu_amdkfd_device_fini_sw
-> kfd_node tear down.
Process A and B may trigger a race as shown in dmesg log.
This patch is to resolve the race by adding an atomic kfd_process counter
kfd_processes_count, it increment as create kfd process, decrement as
finish kfd_process_wq_release.
v2: Put kfd_processes_count per kfd_dev, move decrement to kfd_process_destroy_pdds
and bug fix. (Philip Yang)
[3966658.307702] divide error: 0000 [#1] SMP NOPTI
[3966658.350818] i10nm_edac
[3966658.356318] CPU: 124 PID: 38435 Comm: kworker/124:0 Kdump: loaded Tainted
[3966658.356890] Workqueue: kfd_process_wq kfd_process_wq_release [amdgpu]
[3966658.362839] nfit
[3966658.366457] RIP: 0010:kfd_get_num_sdma_engines+0x17/0x40 [amdgpu]
[3966658.366460] Code: 00 00 e9 ac 81 02 00 66 66 2e 0f 1f 84 00 00 00 00 00 90 0f 1f 44 00 00 48 8b 4f 08 48 8b b7 00 01 00 00 8b 81 58 26 03 00 99 <f7> be b8 01 00 00 80 b9 70 2e 00 00 00 74 0b 83 f8 02 ba 02 00 00
[3966658.380967] x86_pkg_temp_thermal
[3966658.391529] RSP: 0018:ffffc900a0edfdd8 EFLAGS: 00010246
[3966658.391531] RAX: 0000000000000008 RBX: ffff8974e593b800 RCX: ffff888645900000
[3966658.391531] RDX: 0000000000000000 RSI: ffff888129154400 RDI: ffff888129151c00
[3966658.391532] RBP: ffff8883ad79d400 R08: 0000000000000000 R09: ffff8890d2750af4
[3966658.391532] R10: 0000000000000018 R11: 0000000000000018 R12: 0000000000000000
[3966658.391533] R13: ffff8883ad79d400 R14: ffffe87ff662ba00 R15: ffff8974e593b800
[3966658.391533] FS: 0000000000000000(0000) GS:ffff88fe7f600000(0000) knlGS:0000000000000000
[3966658.391534] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[3966658.391534] CR2: 0000000000d71000 CR3: 000000dd0e970004 CR4: 0000000002770ee0
[3966658.391535] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[3966658.391535] DR3: 0000000000000000 DR6: 00000000fffe07f0 DR7: 0000000000000400
[3966658.391536] PKRU: 55555554
[3966658.391536] Call Trace:
[3966658.391674] deallocate_sdma_queue+0x38/0xa0 [amdgpu]
[3966658.391762] process_termination_cpsch+0x1ed/0x480 [amdgpu]
[3966658.399754] intel_powerclamp
[3966658.402831] kfd_process_dequeue_from_all_devices+0x5b/0xc0 [amdgpu]
[3966658.402908] kfd_process_wq_release+0x1a/0x1a0 [amdgpu]
[3966658.410516] coretemp
[3966658.434016] process_one_work+0x1ad/0x380
[3966658.434021] worker_thread+0x49/0x310
[3966658.438963] kvm_intel
[3966658.446041] ? process_one_work+0x380/0x380
[3966658.446045] kthread+0x118/0x140
[3966658.446047] ? __kthread_bind_mask+0x60/0x60
[3966658.446050] ret_from_fork+0x1f/0x30
[3966658.446053] Modules linked in: kpatch_20765354(OEK)
[3966658.455310] kvm
[3966658.464534] mptcp_diag xsk_diag raw_diag unix_diag af_packet_diag netlink_diag udp_diag act_pedit act_mirred act_vlan cls_flower kpatch_21951273(OEK) kpatch_18424469(OEK) kpatch_19749756(OEK)
[3966658.473462] idxd_mdev
[3966658.482306] kpatch_17971294(OEK) sch_ingress xt_conntrack amdgpu(OE) amdxcp(OE) amddrm_buddy(OE) amd_sched(OE) amdttm(OE) amdkcl(OE) intel_ifs iptable_mangle tcm_loop target_core_pscsi tcp_diag target_core_file inet_diag target_core_iblock target_core_user target_core_mod coldpgs kpatch_18383292(OEK) ip6table_nat ip6table_filter ip6_tables ip_set_hash_ipportip ip_set_hash_ipportnet ip_set_hash_ipport ip_set_bitmap_port xt_comment iptable_nat nf_nat iptable_filter ip_tables ip_set ip_vs_sh ip_vs_wrr ip_vs_rr ip_vs nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 sn_core_odd(OE) i40e overlay binfmt_misc tun bonding(OE) aisqos(OE) aisqos_hotfixes(OE) rfkill uio_pci_generic uio cuse fuse nf_tables nfnetlink intel_rapl_msr intel_rapl_common intel_uncore_frequency intel_uncore_frequency_common i10nm_edac nfit x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm idxd_mdev
[3966658.491237] vfio_pci
[3966658.501196] vfio_pci vfio_virqfd mdev vfio_iommu_type1 vfio iax_crypto intel_pmt_telemetry iTCO_wdt intel_pmt_class iTCO_vendor_support irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel rapl intel_cstate snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_hda_core snd_hwdep snd_seq
[3966658.508537] vfio_virqfd
[3966658.517569] snd_seq_device ipmi_ssif isst_if_mbox_pci isst_if_mmio pcspkr snd_pcm idxd intel_uncore ses isst_if_common intel_vsec idxd_bus enclosure snd_timer mei_me snd i2c_i801 i2c_smbus mei i2c_ismt soundcore joydev acpi_ipmi ipmi_si ipmi_devintf ipmi_msghandler acpi_power_meter acpi_pad vfat fat
[3966658.526851] mdev
[3966658.536096] nfsd auth_rpcgss nfs_acl lockd grace slb_vtoa(OE) sunrpc dm_mod hookers mlx5_ib(OE) ast i2c_algo_bit drm_vram_helper drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm_ttm_helper ttm mlx5_core(OE) mlxfw(OE)
[3966658.540381] vfio_iommu_type1
[3966658.544341] nvme mpt3sas tls drm nvme_core pci_hyperv_intf raid_class psample libcrc32c crc32c_intel mlxdevm(OE) i2c_core
[3966658.551254] vfio
[3966658.558742] scsi_transport_sas wmi pinctrl_emmitsburg sd_mod t10_pi sg ahci libahci libata rdma_ucm(OE) ib_uverbs(OE) rdma_cm(OE) iw_cm(OE) ib_cm(OE) ib_umad(OE) ib_core(OE) ib_ucm(OE) mlx_compat(OE)
[3966658.563004] iax_crypto
[3966658.570988] [last unloaded: diagnose]
[3966658.571027] ---[ end trace cc9dbb180f9ae537 ]---
Signed-off-by: Yifan Zhang <yifan1.zhang@amd.com>
Reviewed-by: Philip.Yang<Philip.Yang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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There is race in amdgpu_amdkfd_device_fini_sw and interrupt.
if amdgpu_amdkfd_device_fini_sw run in b/w kfd_cleanup_nodes and
kfree(kfd), and KGD interrupt generated.
kernel panic log:
BUG: kernel NULL pointer dereference, address: 0000000000000098
amdgpu 0000:c8:00.0: amdgpu: Requesting 4 partitions through PSP
PGD d78c68067 P4D d78c68067
kfd kfd: amdgpu: Allocated 3969056 bytes on gart
PUD 1465b8067 PMD @
Oops: @002 [#1] SMP NOPTI
kfd kfd: amdgpu: Total number of KFD nodes to be created: 4
CPU: 115 PID: @ Comm: swapper/115 Kdump: loaded Tainted: G S W OE K
RIP: 0010:_raw_spin_lock_irqsave+0x12/0x40
Code: 89 e@ 41 5c c3 cc cc cc cc 66 66 2e Of 1f 84 00 00 00 00 00 OF 1f 40 00 Of 1f 44% 00 00 41 54 9c 41 5c fa 31 cO ba 01 00 00 00 <fO> OF b1 17 75 Ba 4c 89 e@ 41 Sc
89 c6 e8 07 38 5d
RSP: 0018: ffffc90@1a6b0e28 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000018
0000000000000001 RSI: ffff8883bb623e00 RDI: 0000000000000098
ffff8883bb000000 RO8: ffff888100055020 ROO: ffff888100055020
0000000000000000 R11: 0000000000000000 R12: 0900000000000002
ffff888F2b97da0@ R14: @000000000000098 R15: ffff8883babdfo00
CS: 010 DS: 0000 ES: 0000 CRO: 0000000080050033
CR2: 0000000000000098 CR3: 0000000e7cae2006 CR4: 0000000002770ce0
0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
0000000000000000 DR6: 00000000fffeO7FO DR7: 0000000000000400
PKRU: 55555554
Call Trace:
<IRQ>
kgd2kfd_interrupt+@x6b/0x1f@ [amdgpu]
? amdgpu_fence_process+0xa4/0x150 [amdgpu]
kfd kfd: amdgpu: Node: 0, interrupt_bitmap: 3 YcpxFl Rant tErace
amdgpu_irq_dispatch+0x165/0x210 [amdgpu]
amdgpu_ih_process+0x80/0x100 [amdgpu]
amdgpu: Virtual CRAT table created for GPU
amdgpu_irq_handler+0x1f/@x60 [amdgpu]
__handle_irq_event_percpu+0x3d/0x170
amdgpu: Topology: Add dGPU node [0x74a2:0x1002]
handle_irq_event+0x5a/@xcO
handle_edge_irq+0x93/0x240
kfd kfd: amdgpu: KFD node 1 partition @ size 49148M
asm_call_irq_on_stack+0xf/@x20
</IRQ>
common_interrupt+0xb3/0x130
asm_common_interrupt+0x1le/0x40
5.10.134-010.a1i5000.a18.x86_64 #1
Signed-off-by: Yifan Zhang <yifan1.zhang@amd.com>
Reviewed-by: Philip Yang<Philip.Yang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Reject modes with a pixel clock higher than the maximum display
clock. Use 400 MHz as a fallback value when the maximum display
clock is not known. Pixel clocks that are higher than the display
clock just won't work and are not supported.
With the addition of the YUV422 fallback, DC can now accidentally
select a mode requiring higher pixel clock than actually supported
when the DP version supports the required bandwidth but the clock
is otherwise too high for the display engine. DCE 6-10 don't
support these modes but they don't have a bandwidth calculation
to reject them properly.
Fixes: db291ed1732e ("drm/amd/display: Add fallback path for YCBCR422")
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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[Why]
amdgpu_connector_add_common_modes() has a check for the width and height
of common modes being too small, but the array of common_modes[] has fixed
values. The check is dead code.
[How]
Drop unnecessary check.
Cc: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://lore.kernel.org/r/20250924161624.1975819-3-mario.limonciello@amd.com
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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[Why]
The main reason common modes are added is for compatibility with
clone mode when a laptop is connected to a projector or external
monitor. Since commit 978fa2f6d0b12 ("drm/amd/display: Use scaling
for non-native resolutions on eDP") when non-native modes are picked
for eDP the GPU scalar will be used. This is because it is inconsistent
whether eDP panels have the capability to actually drive non-native
resolutions. With panels connected to other connectors this limitation
generally doesn't exist as we the EDID will advertise support for a
number of resolutions and monitors will use built in scaling hardware.
Comparing DC and non-DC code paths the non-DC code path only adds
common modes for LVDS and eDP whereas the DC codepath does it for
all connector types.
In the past there was an experiment done to disable common mode adding
for eDP and LVDS from commit 6d396e7ac1ce3 ("drm/amd/display: Disable
common modes for LVDS") and commit 7948afb46af92 ("drm/amd/display:
Disable common modes for eDP") but this was reverted in
commit a8b79b09185de ("drm/amd: Re-enable common modes for eDP and
LVDS") because it caused problems with Xorg.
[How]
Only add common modes for eDP and LVDS for DC, matching the behavior
of non-DC.
Suggested-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://lore.kernel.org/r/20250924161624.1975819-2-mario.limonciello@amd.com
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Variable "i" has been redeclared as integer later in the function
which is wrong and not serving any purpose.
Fixes: 899fbde14646 ("drm/amdgpu: replace get_user_pages with HMM mirror helpers")
Signed-off-by: Sunil Khatri <sunil.khatri@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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It should return an error code if userq VA validation fails.
Fixes: 9e46b8bb0539 ("drm/amdgpu: validate userq buffer virtual address and size")
Signed-off-by: Prike Liang <Prike.Liang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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This reverts commit e44a0fe630c58b0a87d8281f5c1077a3479e5fce.
Initially we used VMID reservation to enforce isolation between
processes. That has now been replaced by proper fence handling.
Both OpenGL, RADV and ROCm developers requested a way to reserve a VMID
for SPM, so restore that approach by reverting back to only allowing a
single process to use the reserved VMID.
Only compile tested for now.
v2: use -ENOENT instead of -EINVAL if VMID is not available
Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Initially we enforced isolation by reserving a VMID, but that practice
was now removed.
Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Add a fallback mechanism to attempt pipe reset when KCQ reset
fails to recover the ring. After performing the KCQ reset and
queue remapping, test the ring functionality. If the ring test
fails, initiate a pipe reset as an additional recovery step.
v2: fix the typo (Lijo)
v3: try pipeline reset when kiq mapping fails (Lijo)
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Jesse Zhang <Jesse.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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[Why]
commit 530694f54dd5e ("drm/amdgpu: do not resume device in thaw for
normal hibernation") optimized the flow for systems that are going
into S4 where the power would be turned off. Basically the thaw()
callback wouldn't resume the device if the hibernation image was
successfully created since the system would be powered off.
This however isn't the correct flow for a system entering into
s0i3 after the hibernation image is created. Some of the amdgpu
callbacks have different behavior depending upon the intended
state of the suspend.
[How]
Use pm_hibernation_mode_is_suspend() as an input to decide whether
to run resume during thaw() callback.
Reported-by: Ionut Nechita <ionut_n2001@yahoo.com>
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4573
Tested-by: Ionut Nechita <ionut_n2001@yahoo.com>
Fixes: 530694f54dd5e ("drm/amdgpu: do not resume device in thaw for normal hibernation")
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Tested-by: Kenneth Crudup <kenny@panix.com>
Signed-off-by: Mario Limonciello (AMD) <superm1@kernel.org>
Cc: 6.17+ <stable@vger.kernel.org> # 6.17+: 495c8d35035e: PM: hibernate: Add pm_hibernation_mode_is_suspend()
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Cross-merge networking fixes after downstream PR (net-6.17-rc8).
Conflicts:
drivers/net/can/spi/hi311x.c
6b6968084721 ("can: hi311x: fix null pointer dereference when resuming from sleep before interface was enabled")
27ce71e1ce81 ("net: WQ_PERCPU added to alloc_workqueue users")
https://lore.kernel.org/72ce7599-1b5b-464a-a5de-228ff9724701@kernel.org
net/smc/smc_loopback.c
drivers/dibs/dibs_loopback.c
a35c04de2565 ("net/smc: fix warning in smc_rx_splice() when calling get_page()")
cc21191b584c ("dibs: Move data path to dibs layer")
https://lore.kernel.org/74368a5c-48ac-4f8e-a198-40ec1ed3cf5f@kernel.org
Adjacent changes:
drivers/net/dsa/lantiq/lantiq_gswip.c
c0054b25e2f1 ("net: dsa: lantiq_gswip: move gswip_add_single_port_br() call to port_setup()")
7a1eaef0a791 ("net: dsa: lantiq_gswip: support model-specific mac_select_pcs()")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The block layer validates buffer alignment using the device's
dma_alignment value. If dma_alignment is smaller than
logical_block_size(bp_block) -1, misaligned buffer incorrectly pass
validation and propagate to the lower-level driver.
This patch adjusts dma_alignment to be at least logical_block_size -1,
ensuring that misalignment buffers are properly rejected at the block
layer and do not reach the DASD driver unnecessarily.
Fixes: 2a07bb64d801 ("s390/dasd: Remove DMA alignment")
Reviewed-by: Stefan Haberland <sth@linux.ibm.com>
Cc: stable@vger.kernel.org #6.11+
Signed-off-by: Jaehoon Kim <jhkim@linux.ibm.com>
Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Currently, if CCW request creation fails with -EINVAL, the DASD driver
returns BLK_STS_IOERR to the block layer.
This can happen, for example, when a user-space application such as QEMU
passes a misaligned buffer, but the original cause of the error is
masked as a generic I/O error.
This patch changes the behavior so that -EINVAL is returned as
BLK_STS_INVAL, allowing user space to properly detect alignment issues
instead of interpreting them as I/O errors.
Reviewed-by: Stefan Haberland <sth@linux.ibm.com>
Cc: stable@vger.kernel.org #6.11+
Signed-off-by: Jaehoon Kim <jhkim@linux.ibm.com>
Signed-off-by: Stefan Haberland <sth@linux.ibm.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from Bluetooth, IPsec and CAN.
No known regressions at this point.
Current release - regressions:
- xfrm: xfrm_alloc_spi shouldn't use 0 as SPI
Previous releases - regressions:
- xfrm: fix offloading of cross-family tunnels
- bluetooth: fix several races leading to UaFs
- dsa: lantiq_gswip: fix FDB entries creation for the CPU port
- eth:
- tun: update napi->skb after XDP process
- mlx: fix UAF in flow counter release
Previous releases - always broken:
- core: forbid FDB status change while nexthop is in a group
- smc: fix warning in smc_rx_splice() when calling get_page()
- can: provide missing ndo_change_mtu(), to prevent buffer overflow.
- eth:
- i40e: fix VF config validation
- broadcom: fix support for PTP_EXTTS_REQUEST2 ioctl"
* tag 'net-6.17-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (40 commits)
octeontx2-pf: Fix potential use after free in otx2_tc_add_flow()
net: dsa: lantiq_gswip: suppress -EINVAL errors for bridge FDB entries added to the CPU port
net: dsa: lantiq_gswip: move gswip_add_single_port_br() call to port_setup()
libie: fix string names for AQ error codes
net/mlx5e: Fix missing FEC RS stats for RS_544_514_INTERLEAVED_QUAD
net/mlx5: HWS, ignore flow level for multi-dest table
net/mlx5: fs, fix UAF in flow counter release
selftests: fib_nexthops: Add test cases for FDB status change
selftests: fib_nexthops: Fix creation of non-FDB nexthops
nexthop: Forbid FDB status change while nexthop is in a group
net: allow alloc_skb_with_frags() to use MAX_SKB_FRAGS
bnxt_en: correct offset handling for IPv6 destination address
ptp: document behavior of PTP_STRICT_FLAGS
broadcom: fix support for PTP_EXTTS_REQUEST2 ioctl
broadcom: fix support for PTP_PEROUT_DUTY_CYCLE
Bluetooth: MGMT: Fix possible UAFs
Bluetooth: hci_event: Fix UAF in hci_acl_create_conn_sync
Bluetooth: hci_event: Fix UAF in hci_conn_tx_dequeue
Bluetooth: hci_sync: Fix hci_resume_advertising_sync
Bluetooth: Fix build after header cleanup
...
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FAN platform data is common across the various systems, while fan
driver should be able to apply only the fan instances relevant
to specific system.
For example, platform data might contain descriptions for fan1,
fan2, ..., fan{n}, while some systems equipped with all 'n' fans,
others with less.
Also, on some systems fan drawer can be equipped with several
tachometers and on others only with one.
For detection of the real number of equipped drawers and tachometers
special capability registers are used.
These registers used to indicate presence of drawers and tachometers
through the bitmap.
For some new big modular systems this register will provide presence
data by counter.
Use slot parameter to distinct whether capability register contains
bitmask or counter.
Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Link: https://lore.kernel.org/r/20250113084859.27064-3-vadimp@nvidia.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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subsystems
Distinct between fan speed setting request coming for hwmon and
thermal subsystems.
There are fields 'last_hwmon_state' and 'last_thermal_state' in the
structure 'mlxreg_fan_pwm', which respectively store the cooling state
set by the 'hwmon' and 'thermal' subsystem.
The purpose is to make arbitration of fan speed setting. For example, if
fan speed required to be not lower than some limit, such setting is to
be performed through 'hwmon' subsystem, thus 'thermal' subsystem will
not set fan below this limit.
Currently, the 'last_thermal_state' is also be updated by 'hwmon' causing
cooling state to never be set to a lower value.
Eliminate update of 'last_thermal_state', when request is coming from
'hwmon' subsystem.
Fixes: da74944d3a46 ("hwmon: (mlxreg-fan) Use pwm attribute for setting fan speed low limit")
Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Link: https://lore.kernel.org/r/20250113084859.27064-2-vadimp@nvidia.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Register fans connected under EC as thermal cooling devices as well, so
these fans can then work with the thermal framework.
During the driver probing phase, we will also try to register each fan
as a thermal cooling device based on previous probe result (whether the
there are fans connected on that channel, and whether EC supports fan
control). The basic get max state, get current state, and set current
state methods are then implemented as well.
Signed-off-by: Sung-Chi Li <lschyi@chromium.org>
Acked-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://lore.kernel.org/r/20250911-cros_ec_fan-v6-3-a1446cc098af@google.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Newer EC firmware supports controlling fans through host commands, so
adding corresponding implementations for controlling these fans in the
driver for other kernel services and userspace to control them.
The driver will first probe the supported host command versions (get and
set of fan PWM values, get and set of fan control mode) to see if the
connected EC fulfills the requirements of controlling the fan, then
exposes corresponding sysfs nodes for userspace to control the fan with
corresponding read and write implementations.
As EC will automatically change the fan mode to auto when the device is
suspended, the power management hooks are added as well to keep the fan
control mode and fan PWM value consistent during suspend and resume. As
we need to access the hwmon device in the power management hook, update
the driver by storing the hwmon device in the driver data as well.
Signed-off-by: Sung-Chi Li <lschyi@chromium.org>
Acked-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://lore.kernel.org/r/20250911-cros_ec_fan-v6-2-a1446cc098af@google.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Add a new driver for the Kontron SMARC-sAM67 board management
controller. It has two voltage sensors and one temperature sensor.
Signed-off-by: Michael Walle <mwalle@kernel.org>
Link: https://lore.kernel.org/r/20250912120745.2295115-7-mwalle@kernel.org
[groeck: Added sa67 to index.rst]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Add support for TUF GAMING X670E PLUS WIFI
Signed-off-by: Mohamad Kamal <mohamad.kamal.85@gmail.com>
Signed-off-by: Eugene Shalygin <eugene.shalygin@gmail.com>
Link: https://lore.kernel.org/r/20250914084019.1108941-1-eugene.shalygin@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Pull virtio fixes from Michael Tsirkin:
"virtio,vhost: last minute fixes
More small fixes. Most notably this fixes crashes and hangs in
vhost-net"
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
MAINTAINERS, mailmap: Update address for Peter Hilber
virtio_config: clarify output parameters
uapi: vduse: fix typo in comment
vhost: Take a reference on the task in struct vhost_task.
vhost-net: flush batched before enabling notifications
Revert "vhost/net: Defer TX queue re-enable until after sendmsg"
vhost-net: unbreak busy polling
vhost-scsi: fix argument order in tport allocation error message
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Currently if a user enqueue a work item using schedule_delayed_work() the
used wq is "system_wq" (per-cpu wq) while queue_delayed_work() use
WORK_CPU_UNBOUND (used when a cpu is not specified). The same applies to
schedule_work() that is using system_wq and queue_work(), that makes use
again of WORK_CPU_UNBOUND.
This lack of consistentcy cannot be addressed without refactoring the API.
alloc_workqueue() treats all queues as per-CPU by default, while unbound
workqueues must opt-in via WQ_UNBOUND.
This default is suboptimal: most workloads benefit from unbound queues,
allowing the scheduler to place worker threads where they’re needed and
reducing noise when CPUs are isolated.
This patch adds a new WQ_PERCPU flag to explicitly request the use of
the per-CPU behavior. Both flags coexist for one release cycle to allow
callers to transition their calls.
Once migration is complete, WQ_UNBOUND can be removed and unbound will
become the implicit default.
With the introduction of the WQ_PERCPU flag (equivalent to !WQ_UNBOUND),
any alloc_workqueue() caller that doesn’t explicitly specify WQ_UNBOUND
must now use WQ_PERCPU.
All existing users have been updated accordingly.
Suggested-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Marco Crivellari <marco.crivellari@suse.com>
Acked-by: Alexander Gordeev <agordeev@linux.ibm.com>
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
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Commit 5c83b07df9c5 ("tpm: Add a driver for Loongson TPM device") has a
semantic conflict with commit 07d8004d6fb9 ("tpm: add bufsiz parameter
in the .send callback"), as the former change was developed against a
tree without the latter change. This results in a build error:
drivers/char/tpm/tpm_loongson.c:48:17: error: initialization of 'int (*)(struct tpm_chip *, u8 *, size_t, size_t)' {aka 'int (*)(struct tpm_chip *, unsigned char *, long unsigned int, long unsigned int)'} from incompatible pointer type 'int (*)(struct tpm_chip *, u8 *, size_t)' {aka 'int (*)(struct tpm_chip *, unsigned char *, long unsigned int)'} [-Wincompatible-pointer-types]
48 | .send = tpm_loongson_send,
| ^~~~~~~~~~~~~~~~~
drivers/char/tpm/tpm_loongson.c:48:17: note: (near initialization for 'tpm_loongson_ops.send')
drivers/char/tpm/tpm_loongson.c:31:12: note: 'tpm_loongson_send' declared here
31 | static int tpm_loongson_send(struct tpm_chip *chip, u8 *buf, size_t count)
| ^~~~~~~~~~~~~~~~~
Add the expected bufsiz parameter to tpm_loongson_send() to resolve the
error.
Fixes: 5c83b07df9c5 ("tpm: Add a driver for Loongson TPM device")
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Lee Jones <lee@kernel.org>
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Currently, NETIF_F_TSO_MANGLEID indicates that the inner-most ID can
be mangled. Outer IDs can always be mangled.
Make GSO preserve outer IDs by default, with NETIF_F_TSO_MANGLEID allowing
both inner and outer IDs to be mangled.
This commit also modifies a few drivers that use SKB_GSO_FIXEDID directly.
Signed-off-by: Richard Gobert <richardbgobert@gmail.com>
Reviewed-by: Edward Cree <ecree.xilinx@gmail.com> # for sfc
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20250923085908.4687-4-richardbgobert@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Add support to read module EEPROM for fbnic. Towards this, add required
support to issue a new command to the firmware and to receive the response
to the corresponding command.
Create a local copy of the data in the completion struct before writing to
ethtool_module_eeprom to avoid writing to data in case it is freed. Given
that EEPROM pages are small, the overhead of additional copy is
negligible.
Do not block API with explicit checks since API has appropriate checks in
place for length, offset, and page.
Explicitly check bank, page, offset, and length in
fbnic_fw_parse_qsfp_read_resp() to match EEPROM read responses to the
correct request. This is important because if the driver times out waiting
for an EEPROM read response, a subsequent read request with different
values is susceptible to receiving an erroneous response (i.e., the
response to the previous request).
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Mohsin Bashir <mohsin.bashr@gmail.com>
Link: https://patch.msgid.link/20250922231855.3717483-1-mohsin.bashr@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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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: dbf0c5a6b1f8 ("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>
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This code calls kfree_rcu(new_node, rcu) and then dereferences "new_node"
and then dereferences it on the next line. Two lines later, we take
a mutex so I don't think this is an RCU safe region. Re-order it to do
the dereferences before queuing up the free.
Fixes: 68fbff68dbea ("octeontx2-pf: Add police action for TC flower")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Link: https://patch.msgid.link/aNKCL1jKwK8GRJHh@stanley.mountain
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Commit de8548813824 ("drm/panthor: Add the scheduler logical block")
handled destruction of a group's queues' drm scheduler entities early
into the group destruction procedure.
However, that races with the group submit ioctl, because by the time
entities are destroyed (through the group destroy ioctl), the submission
procedure might've already obtained a group handle, and therefore the
ability to push jobs into entities. This is met with a DRM error message
within the drm scheduler core as a situation that should never occur.
Fix by deferring drm scheduler entity destruction to queue release time.
Fixes: de8548813824 ("drm/panthor: Add the scheduler logical block")
Signed-off-by: Adrián Larumbe <adrian.larumbe@collabora.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Link: https://lore.kernel.org/r/20250919164436.531930-1-adrian.larumbe@collabora.com
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to the CPU port
The blamed commit and others in that patch set started the trend
of reusing existing DSA driver API for a new purpose: calling
ds->ops->port_fdb_add() on the CPU port.
The lantiq_gswip driver was not prepared to handle that, as can be seen
from the many errors that Daniel presents in the logs:
[ 174.050000] gswip 1e108000.switch: port 2 failed to add fa:aa:72:f4:8b:1e vid 1 to fdb: -22
[ 174.060000] gswip 1e108000.switch lan2: entered promiscuous mode
[ 174.070000] gswip 1e108000.switch: port 2 failed to add 00:01:02:03:04:02 vid 0 to fdb: -22
[ 174.090000] gswip 1e108000.switch: port 2 failed to add 00:01:02:03:04:02 vid 1 to fdb: -22
[ 174.090000] gswip 1e108000.switch: port 2 failed to delete fa:aa:72:f4:8b:1e vid 1 from fdb: -2
The errors are because gswip_port_fdb() wants to get a handle to the
bridge that originated these FDB events, to associate it with a FID.
Absolutely honourable purpose, however this only works for user ports.
To get the bridge that generated an FDB entry for the CPU port, one
would need to look at the db.bridge.dev argument. But this was
introduced in commit c26933639b54 ("net: dsa: request drivers to perform
FDB isolation"), first appeared in v5.18, and when the blamed commit was
introduced in v5.14, no such API existed.
So the core DSA feature was introduced way too soon for lantiq_gswip.
Not acting on these host FDB entries and suppressing any errors has no
other negative effect, and practically returns us to not supporting the
host filtering feature at all - peacefully, this time.
Fixes: 10fae4ac89ce ("net: dsa: include bridge addresses which are local in the host fdb list")
Reported-by: Daniel Golle <daniel@makrotopia.org>
Closes: https://lore.kernel.org/netdev/aJfNMLNoi1VOsPrN@pidgin.makrotopia.org/
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Link: https://patch.msgid.link/20250918072142.894692-3-vladimir.oltean@nxp.com
Tested-by: Daniel Golle <daniel@makrotopia.org>
Reviewed-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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A port added to a "single port bridge" operates as standalone, and this
is mutually exclusive to being part of a Linux bridge. In fact,
gswip_port_bridge_join() calls gswip_add_single_port_br() with
add=false, i.e. removes the port from the "single port bridge" to enable
autonomous forwarding.
The blamed commit seems to have incorrectly thought that ds->ops->port_enable()
is called one time per port, during the setup phase of the switch.
However, it is actually called during the ndo_open() implementation of
DSA user ports, which is to say that this sequence of events:
1. ip link set swp0 down
2. ip link add br0 type bridge
3. ip link set swp0 master br0
4. ip link set swp0 up
would cause swp0 to join back the "single port bridge" which step 3 had
just removed it from.
The correct DSA hook for one-time actions per port at switch init time
is ds->ops->port_setup(). This is what seems to match the coder's
intention; also see the comment at the beginning of the file:
* At the initialization the driver allocates one bridge table entry for
~~~~~~~~~~~~~~~~~~~~~
* each switch port which is used when the port is used without an
* explicit bridge.
Fixes: 8206e0ce96b3 ("net: dsa: lantiq: Add VLAN unaware bridge offloading")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Link: https://patch.msgid.link/20250918072142.894692-2-vladimir.oltean@nxp.com
Tested-by: Daniel Golle <daniel@makrotopia.org>
Reviewed-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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On HL338 ASICs, the Infineon first‑stage firmware is not present and
the reported version is 0. In this case printing a version number is
misleading, as it suggests valid firmware when it does not exist.
Fix this by printing the first‑stage Infineon firmware version only
if the reported value is non‑zero. This avoids confusing or incorrect
log messages on devices where the first stage is not applicable.
Signed-off-by: Pavan S <pavan.sreenivas@intel.com>
Reviewed-by: Koby Elbaz <koby.elbaz@intel.com>
Signed-off-by: Koby Elbaz <koby.elbaz@intel.com>
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Dirty state can occur when the host VM undergoes a reset while the
device does not. In such a case, the driver must reset the device before
it can be used again. As part of this reset, the device capabilities
are zeroed. Therefore, the driver must read the Preboot status again to
learn the Preboot state, capabilities, and security configuration.
Signed-off-by: Konstantin Sinyuk <konstantin.sinyuk@intel.com>
Reviewed-by: Koby Elbaz <koby.elbaz@intel.com>
Signed-off-by: Koby Elbaz <koby.elbaz@intel.com>
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Add a new passthrough type HL_GET_P_STATE to the cpucp generic ioctl
to allow userspace to read the device performance state via firmware.
Signed-off-by: Ariel Aviad <ariel.aviad@intel.com>
Reviewed-by: Koby Elbaz <koby.elbaz@intel.com>
Signed-off-by: Koby Elbaz <koby.elbaz@intel.com>
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Add debugfs files for NVMe Direct I/O (HLDIO) functionality.
This interface allows userspace access to direct SSD ↔ device transfers
through debugfs nodes.
Four debugfs files are created under /sys/kernel/debug/habanalabs/hlN/:
- dio_ssd2hl : trigger SSD-to-device transfers
- dio_hl2ssd : trigger device-to-SSD transfers
(placeholder, not yet implemented)
- dio_stats : show transfer statistics
- dio_reset : reset statistics counters
Usage examples:
# Perform SSD → device transfer
echo "fd=3 va=0x10000 off=0 len=4096" > \
/sys/kernel/debug/habanalabs/hl0/dio_ssd2hl
# View statistics
cat /sys/kernel/debug/habanalabs/hl0/dio_stats
# Reset counters
echo 1 > /sys/kernel/debug/habanalabs/hl0/dio_reset
This interface provides access to HLDIO functionality for validation
and diagnostics.
Signed-off-by: Konstantin Sinyuk <konstantin.sinyuk@intel.com>
Reviewed-by: Farah Kassabri <farah.kassabri@intel.com>
Reviewed-by: Koby Elbaz <koby.elbaz@intel.com>
Signed-off-by: Koby Elbaz <koby.elbaz@intel.com>
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Introduce NVMe Direct I/O (HLDIO) infrastructure to support
peer‑to‑peer DMA in the habanalabs driver. This adds internal helpers
and data structures to enable direct transfers between NVMe storage
and device memory.
The feature is built only when CONFIG_HL_HLDIO is enabled. A debugfs
interface is also provided for functional validation.
Signed-off-by: Konstantin Sinyuk <konstantin.sinyuk@intel.com>
Reviewed-by: Farah Kassabri <farah.kassabri@intel.com>
Reviewed-by: Koby Elbaz <koby.elbaz@intel.com>
Signed-off-by: Koby Elbaz <koby.elbaz@intel.com>
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When IOMMU is enabled, dma_alloc_coherent() with GFP_USER may return
addresses from the vmalloc range. If such an address is mapped without
VM_MIXEDMAP, vm_insert_page() will trigger a BUG_ON due to the
VM_PFNMAP restriction.
Fix this by checking for vmalloc addresses and setting VM_MIXEDMAP
in the VMA before mapping. This ensures safe mapping and avoids kernel
crashes. The memory is still driver-allocated and cannot be accessed
directly by userspace.
Signed-off-by: Moti Haimovski <moti.haimovski@intel.com>
Reviewed-by: Koby Elbaz <koby.elbaz@intel.com>
Signed-off-by: Koby Elbaz <koby.elbaz@intel.com>
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The access_ok() API no longer requires the VERIFY_WRITE argument,
and the use of the old interface with VERIFY_WRITE is deprecated.
Clean up the habanalabs memory manager to use the modern access_ok()
interface consistently. This removes old #ifdef guards and aligns the
driver with current upstream kernel APIs.
Signed-off-by: Ilia Levi <ilia.levi@intel.com>
Reviewed-by: Koby Elbaz <koby.elbaz@intel.com>
Signed-off-by: Koby Elbaz <koby.elbaz@intel.com>
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After CPLD shutdown event the device is not usable anymore. The common
CPLD_SHUTDOWN event handler disables any subsequent device access.
Signed-off-by: Konstantin Sinyuk <konstantin.sinyuk@intel.com>
Reviewed-by: Koby Elbaz <koby.elbaz@intel.com>
Signed-off-by: Koby Elbaz <koby.elbaz@intel.com>
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After a CPLD shutdown event the device becomes unusable. Prevent further
device access once this event is received.
Signed-off-by: Konstantin Sinyuk <konstantin.sinyuk@intel.com>
Reviewed-by: Koby Elbaz <koby.elbaz@intel.com>
Signed-off-by: Koby Elbaz <koby.elbaz@intel.com>
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In hl_release_dmabuf(), ctx is dereferenced after calling hl_ctx_put()
to obtain the compute device file.
This is safe because the dma-buf object holds a file reference taken in
export_dmabuf(), and the file release (which drops another ctx reference)
can only happen after we drop that file reference via fput(). Thus, this
hl_ctx_put() call cannot be the last one at this point.
Add a comment explaining this to avoid confusion.
Signed-off-by: Tomer Tayar <tomer.tayar@intel.com>
Reviewed-by: Koby Elbaz <koby.elbaz@intel.com>
Signed-off-by: Koby Elbaz <koby.elbaz@intel.com>
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Add infrastructure for logging the last configuration register accesses
that occur via debugfs read/write operations. At interrupt time, these
log entries can be dumped to dmesg, which helps in diagnosing the cause
of RAZWI and ADDR_DEC interrupts.
The logging is implemented as a ring buffer of access entries, with each
entry recording timestamp and access details. To ensure correctness
under concurrent access, operations are now protected using spinlocks.
Entries are copied under lock and then printed after releasing it, which
minimizes time spent in the critical section.
Signed-off-by: Sharley Calzolari <sharley.calzolari@intel.com>
Reviewed-by: Koby Elbaz <koby.elbaz@intel.com>
Signed-off-by: Koby Elbaz <koby.elbaz@intel.com>
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Print engine/queue names instead of numerical engine/queue IDs to make
logs and debug output more readable.
Signed-off-by: Ariel Suller <ariel.suller@intel.com>
Reviewed-by: Koby Elbaz <koby.elbaz@intel.com>
Signed-off-by: Koby Elbaz <koby.elbaz@intel.com>
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Add a new CPUCP generic message type to retrieve HBM, SRAM and critical
error counters from the device.
Signed-off-by: Vitaly Margolin <vitaly.margolin@intel.com>
Reviewed-by: Koby Elbaz <koby.elbaz@intel.com>
Signed-off-by: Koby Elbaz <koby.elbaz@intel.com>
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Change the BMON_CR register value back to its original state before
enabling, so that BMON does not continue to collect information
after being disabled.
Signed-off-by: Vered Yavniely <vered.yavniely@intel.com>
Reviewed-by: Koby Elbaz <koby.elbaz@intel.com>
Signed-off-by: Koby Elbaz <koby.elbaz@intel.com>
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EFAULT is currently returned if less than requested user pages are
pinned. This value means a "bad address" which might be confusing to
the user, as the address of the given user memory is not necessarily
"bad".
Modify the return value to ENOMEM, as "out of memory" is more suitable
in this case.
Signed-off-by: Tomer Tayar <tomer.tayar@intel.com>
Reviewed-by: Koby Elbaz <koby.elbaz@intel.com>
Signed-off-by: Koby Elbaz <koby.elbaz@intel.com>
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Convert bnxt dirver to use new timestamping configuration API.
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Reviewed-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Link: https://patch.msgid.link/20250923173310.139623-3-vadim.fedorenko@linux.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Convert tg3 driver to new timestamping configuration API.
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Reviewed-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Link: https://patch.msgid.link/20250923173310.139623-2-vadim.fedorenko@linux.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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By default the LED will be ON when there is a link but they are not
blinking when there is any traffic activity. Therefore change this
to blink when there is any traffic.
Fixes: 5a774b64cd6a ("net: phy: micrel: Add support for lan8842")
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Link: https://patch.msgid.link/20250922130314.758229-1-horatiu.vultur@microchip.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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If we fail to attach a PHY, there is no point trying to configure WoL
settings. Exit the function after printing the "cannot attach to PHY"
error, and remove the now unnecessary code indentation for configuring
the LPI timer in phylink. Since we know that "ret" must be zero at this
point, change the final return to use a constant rather than "ret".
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Link: https://patch.msgid.link/E1v11A8-0000000774M-3pmH@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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