Move NAPI from CQ to EQ #3
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With dedicated EQ created on each vPort and no longer shared between different net devices, move the NAPI code from CQ to EQ. This allows the driver to arm the EQ when NAPI is done, thus avoiding unncessary arming and results in less interrupts from the MANA device.
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Michael Chan says: ==================== bnxt_en: Bug fixes Patches 1, 3, and 4 are bug fixes related to the FW log tracing driver coredump feature recently added in 6.13. Patch #1 adds the necessary call to shutdown the FW logging DMA during PCI shutdown. Patch #3 fixes a possible null pointer derefernce when using early versions of the FW with this feature. Patch #4 adds the coredump header information unconditionally to make it more robust. Patch #2 fixes a possible memory leak during PTP shutdown. Patch #5 eliminates a dmesg warning when doing devlink reload. ==================== Link: https://patch.msgid.link/20251104005700.542174-1-michael.chan@broadcom.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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On completion of i915_vma_pin_ww(), a synchronous variant of dma_fence_work_commit() is called. When pinning a VMA to GGTT address space on a Cherry View family processor, or on a Broxton generation SoC with VTD enabled, i.e., when stop_machine() is then called from intel_ggtt_bind_vma(), that can potentially lead to lock inversion among reservation_ww and cpu_hotplug locks. [86.861179] ====================================================== [86.861193] WARNING: possible circular locking dependency detected [86.861209] 6.15.0-rc5-CI_DRM_16515-gca0305cadc2d+ #1 Tainted: G U [86.861226] ------------------------------------------------------ [86.861238] i915_module_loa/1432 is trying to acquire lock: [86.861252] ffffffff83489090 (cpu_hotplug_lock){++++}-{0:0}, at: stop_machine+0x1c/0x50 [86.861290] but task is already holding lock: [86.861303] ffffc90002e0b4c8 (reservation_ww_class_mutex){+.+.}-{3:3}, at: i915_vma_pin.constprop.0+0x39/0x1d0 [i915] [86.862233] which lock already depends on the new lock. [86.862251] the existing dependency chain (in reverse order) is: [86.862265] -> #5 (reservation_ww_class_mutex){+.+.}-{3:3}: [86.862292] dma_resv_lockdep+0x19a/0x390 [86.862315] do_one_initcall+0x60/0x3f0 [86.862334] kernel_init_freeable+0x3cd/0x680 [86.862353] kernel_init+0x1b/0x200 [86.862369] ret_from_fork+0x47/0x70 [86.862383] ret_from_fork_asm+0x1a/0x30 [86.862399] -> #4 (reservation_ww_class_acquire){+.+.}-{0:0}: [86.862425] dma_resv_lockdep+0x178/0x390 [86.862440] do_one_initcall+0x60/0x3f0 [86.862454] kernel_init_freeable+0x3cd/0x680 [86.862470] kernel_init+0x1b/0x200 [86.862482] ret_from_fork+0x47/0x70 [86.862495] ret_from_fork_asm+0x1a/0x30 [86.862509] -> #3 (&mm->mmap_lock){++++}-{3:3}: [86.862531] down_read_killable+0x46/0x1e0 [86.862546] lock_mm_and_find_vma+0xa2/0x280 [86.862561] do_user_addr_fault+0x266/0x8e0 [86.862578] exc_page_fault+0x8a/0x2f0 [86.862593] asm_exc_page_fault+0x27/0x30 [86.862607] filldir64+0xeb/0x180 [86.862620] kernfs_fop_readdir+0x118/0x480 [86.862635] iterate_dir+0xcf/0x2b0 [86.862648] __x64_sys_getdents64+0x84/0x140 [86.862661] x64_sys_call+0x1058/0x2660 [86.862675] do_syscall_64+0x91/0xe90 [86.862689] entry_SYSCALL_64_after_hwframe+0x76/0x7e [86.862703] -> #2 (&root->kernfs_rwsem){++++}-{3:3}: [86.862725] down_write+0x3e/0xf0 [86.862738] kernfs_add_one+0x30/0x3c0 [86.862751] kernfs_create_dir_ns+0x53/0xb0 [86.862765] internal_create_group+0x134/0x4c0 [86.862779] sysfs_create_group+0x13/0x20 [86.862792] topology_add_dev+0x1d/0x30 [86.862806] cpuhp_invoke_callback+0x4b5/0x850 [86.862822] cpuhp_issue_call+0xbf/0x1f0 [86.862836] __cpuhp_setup_state_cpuslocked+0x111/0x320 [86.862852] __cpuhp_setup_state+0xb0/0x220 [86.862866] topology_sysfs_init+0x30/0x50 [86.862879] do_one_initcall+0x60/0x3f0 [86.862893] kernel_init_freeable+0x3cd/0x680 [86.862908] kernel_init+0x1b/0x200 [86.862921] ret_from_fork+0x47/0x70 [86.862934] ret_from_fork_asm+0x1a/0x30 [86.862947] -> #1 (cpuhp_state_mutex){+.+.}-{3:3}: [86.862969] __mutex_lock+0xaa/0xed0 [86.862982] mutex_lock_nested+0x1b/0x30 [86.862995] __cpuhp_setup_state_cpuslocked+0x67/0x320 [86.863012] __cpuhp_setup_state+0xb0/0x220 [86.863026] page_alloc_init_cpuhp+0x2d/0x60 [86.863041] mm_core_init+0x22/0x2d0 [86.863054] start_kernel+0x576/0xbd0 [86.863068] x86_64_start_reservations+0x18/0x30 [86.863084] x86_64_start_kernel+0xbf/0x110 [86.863098] common_startup_64+0x13e/0x141 [86.863114] -> #0 (cpu_hotplug_lock){++++}-{0:0}: [86.863135] __lock_acquire+0x1635/0x2810 [86.863152] lock_acquire+0xc4/0x2f0 [86.863166] cpus_read_lock+0x41/0x100 [86.863180] stop_machine+0x1c/0x50 [86.863194] bxt_vtd_ggtt_insert_entries__BKL+0x3b/0x60 [i915] [86.863987] intel_ggtt_bind_vma+0x43/0x70 [i915] [86.864735] __vma_bind+0x55/0x70 [i915] [86.865510] fence_work+0x26/0xa0 [i915] [86.866248] fence_notify+0xa1/0x140 [i915] [86.866983] __i915_sw_fence_complete+0x8f/0x270 [i915] [86.867719] i915_sw_fence_commit+0x39/0x60 [i915] [86.868453] i915_vma_pin_ww+0x462/0x1360 [i915] [86.869228] i915_vma_pin.constprop.0+0x133/0x1d0 [i915] [86.870001] initial_plane_vma+0x307/0x840 [i915] [86.870774] intel_initial_plane_config+0x33f/0x670 [i915] [86.871546] intel_display_driver_probe_nogem+0x1c6/0x260 [i915] [86.872330] i915_driver_probe+0x7fa/0xe80 [i915] [86.873057] i915_pci_probe+0xe6/0x220 [i915] [86.873782] local_pci_probe+0x47/0xb0 [86.873802] pci_device_probe+0xf3/0x260 [86.873817] really_probe+0xf1/0x3c0 [86.873833] __driver_probe_device+0x8c/0x180 [86.873848] driver_probe_device+0x24/0xd0 [86.873862] __driver_attach+0x10f/0x220 [86.873876] bus_for_each_dev+0x7f/0xe0 [86.873892] driver_attach+0x1e/0x30 [86.873904] bus_add_driver+0x151/0x290 [86.873917] driver_register+0x5e/0x130 [86.873931] __pci_register_driver+0x7d/0x90 [86.873945] i915_pci_register_driver+0x23/0x30 [i915] [86.874678] i915_init+0x37/0x120 [i915] [86.875347] do_one_initcall+0x60/0x3f0 [86.875369] do_init_module+0x97/0x2a0 [86.875385] load_module+0x2c54/0x2d80 [86.875398] init_module_from_file+0x96/0xe0 [86.875413] idempotent_init_module+0x117/0x330 [86.875426] __x64_sys_finit_module+0x77/0x100 [86.875440] x64_sys_call+0x24de/0x2660 [86.875454] do_syscall_64+0x91/0xe90 [86.875470] entry_SYSCALL_64_after_hwframe+0x76/0x7e [86.875486] other info that might help us debug this: [86.875502] Chain exists of: cpu_hotplug_lock --> reservation_ww_class_acquire --> reservation_ww_class_mutex [86.875539] Possible unsafe locking scenario: [86.875552] CPU0 CPU1 [86.875563] ---- ---- [86.875573] lock(reservation_ww_class_mutex); [86.875588] lock(reservation_ww_class_acquire); [86.875606] lock(reservation_ww_class_mutex); [86.875624] rlock(cpu_hotplug_lock); [86.875637] *** DEADLOCK *** [86.875650] 3 locks held by i915_module_loa/1432: [86.875663] #0: ffff888101f5c1b0 (&dev->mutex){....}-{3:3}, at: __driver_attach+0x104/0x220 [86.875699] #1: ffffc90002e0b4a0 (reservation_ww_class_acquire){+.+.}-{0:0}, at: i915_vma_pin.constprop.0+0x39/0x1d0 [i915] [86.876512] #2: ffffc90002e0b4c8 (reservation_ww_class_mutex){+.+.}-{3:3}, at: i915_vma_pin.constprop.0+0x39/0x1d0 [i915] [86.877305] stack backtrace: [86.877326] CPU: 0 UID: 0 PID: 1432 Comm: i915_module_loa Tainted: G U 6.15.0-rc5-CI_DRM_16515-gca0305cadc2d+ #1 PREEMPT(voluntary) [86.877334] Tainted: [U]=USER [86.877336] Hardware name: /NUC5CPYB, BIOS PYBSWCEL.86A.0079.2020.0420.1316 04/20/2020 [86.877339] Call Trace: [86.877344] <TASK> [86.877353] dump_stack_lvl+0x91/0xf0 [86.877364] dump_stack+0x10/0x20 [86.877369] print_circular_bug+0x285/0x360 [86.877379] check_noncircular+0x135/0x150 [86.877390] __lock_acquire+0x1635/0x2810 [86.877403] lock_acquire+0xc4/0x2f0 [86.877408] ? stop_machine+0x1c/0x50 [86.877422] ? __pfx_bxt_vtd_ggtt_insert_entries__cb+0x10/0x10 [i915] [86.878173] cpus_read_lock+0x41/0x100 [86.878182] ? stop_machine+0x1c/0x50 [86.878191] ? __pfx_bxt_vtd_ggtt_insert_entries__cb+0x10/0x10 [i915] [86.878916] stop_machine+0x1c/0x50 [86.878927] bxt_vtd_ggtt_insert_entries__BKL+0x3b/0x60 [i915] [86.879652] intel_ggtt_bind_vma+0x43/0x70 [i915] [86.880375] __vma_bind+0x55/0x70 [i915] [86.881133] fence_work+0x26/0xa0 [i915] [86.881851] fence_notify+0xa1/0x140 [i915] [86.882566] __i915_sw_fence_complete+0x8f/0x270 [i915] [86.883286] i915_sw_fence_commit+0x39/0x60 [i915] [86.884003] i915_vma_pin_ww+0x462/0x1360 [i915] [86.884756] ? i915_vma_pin.constprop.0+0x6c/0x1d0 [i915] [86.885513] i915_vma_pin.constprop.0+0x133/0x1d0 [i915] [86.886281] initial_plane_vma+0x307/0x840 [i915] [86.887049] intel_initial_plane_config+0x33f/0x670 [i915] [86.887819] intel_display_driver_probe_nogem+0x1c6/0x260 [i915] [86.888587] i915_driver_probe+0x7fa/0xe80 [i915] [86.889293] ? mutex_unlock+0x12/0x20 [86.889301] ? drm_privacy_screen_get+0x171/0x190 [86.889308] ? acpi_dev_found+0x66/0x80 [86.889321] i915_pci_probe+0xe6/0x220 [i915] [86.890038] local_pci_probe+0x47/0xb0 [86.890049] pci_device_probe+0xf3/0x260 [86.890058] really_probe+0xf1/0x3c0 [86.890067] __driver_probe_device+0x8c/0x180 [86.890072] driver_probe_device+0x24/0xd0 [86.890078] __driver_attach+0x10f/0x220 [86.890083] ? __pfx___driver_attach+0x10/0x10 [86.890088] bus_for_each_dev+0x7f/0xe0 [86.890097] driver_attach+0x1e/0x30 [86.890101] bus_add_driver+0x151/0x290 [86.890107] driver_register+0x5e/0x130 [86.890113] __pci_register_driver+0x7d/0x90 [86.890119] i915_pci_register_driver+0x23/0x30 [i915] [86.890833] i915_init+0x37/0x120 [i915] [86.891482] ? __pfx_i915_init+0x10/0x10 [i915] [86.892135] do_one_initcall+0x60/0x3f0 [86.892145] ? __kmalloc_cache_noprof+0x33f/0x470 [86.892157] do_init_module+0x97/0x2a0 [86.892164] load_module+0x2c54/0x2d80 [86.892168] ? __kernel_read+0x15c/0x300 [86.892185] ? kernel_read_file+0x2b1/0x320 [86.892195] init_module_from_file+0x96/0xe0 [86.892199] ? init_module_from_file+0x96/0xe0 [86.892211] idempotent_init_module+0x117/0x330 [86.892224] __x64_sys_finit_module+0x77/0x100 [86.892230] x64_sys_call+0x24de/0x2660 [86.892236] do_syscall_64+0x91/0xe90 [86.892243] ? irqentry_exit+0x77/0xb0 [86.892249] ? sysvec_apic_timer_interrupt+0x57/0xc0 [86.892256] entry_SYSCALL_64_after_hwframe+0x76/0x7e [86.892261] RIP: 0033:0x7303e1b2725d [86.892271] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 8b bb 0d 00 f7 d8 64 89 01 48 [86.892276] RSP: 002b:00007ffddd1fdb38 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [86.892281] RAX: ffffffffffffffda RBX: 00005d771d88fd90 RCX: 00007303e1b2725d [86.892285] RDX: 0000000000000000 RSI: 00005d771d893aa0 RDI: 000000000000000c [86.892287] RBP: 00007ffddd1fdbf0 R08: 0000000000000040 R09: 00007ffddd1fdb80 [86.892289] R10: 00007303e1c03b20 R11: 0000000000000246 R12: 00005d771d893aa0 [86.892292] R13: 0000000000000000 R14: 00005d771d88f0d0 R15: 00005d771d895710 [86.892304] </TASK> Call asynchronous variant of dma_fence_work_commit() in that case. v3: Provide more verbose in-line comment (Andi), - mention target environments in commit message. Fixes: 7d1c261 ("drm/i915: Take reservation lock around i915_vma_pin.") Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/14985 Cc: Andi Shyti <andi.shyti@kernel.org> Signed-off-by: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com> Reviewed-by: Sebastian Brzezinka <sebastian.brzezinka@intel.com> Reviewed-by: Krzysztof Karas <krzysztof.karas@intel.com> Acked-by: Andi Shyti <andi.shyti@linux.intel.com> Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com> Link: https://lore.kernel.org/r/20251023082925.351307-6-janusz.krzysztofik@linux.intel.com (cherry picked from commit 648ef13) Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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Add VMX exit handlers for SEAMCALL and TDCALL to inject a #UD if a non-TD guest attempts to execute SEAMCALL or TDCALL. Neither SEAMCALL nor TDCALL is gated by any software enablement other than VMXON, and so will generate a VM-Exit instead of e.g. a native #UD when executed from the guest kernel. Note! No unprivileged DoS of the L1 kernel is possible as TDCALL and SEAMCALL #GP at CPL > 0, and the CPL check is performed prior to the VMX non-root (VM-Exit) check, i.e. userspace can't crash the VM. And for a nested guest, KVM forwards unknown exits to L1, i.e. an L2 kernel can crash itself, but not L1. Note #2! The Intel® Trust Domain CPU Architectural Extensions spec's pseudocode shows the CPL > 0 check for SEAMCALL coming _after_ the VM-Exit, but that appears to be a documentation bug (likely because the CPL > 0 check was incorrectly bundled with other lower-priority #GP checks). Testing on SPR and EMR shows that the CPL > 0 check is performed before the VMX non-root check, i.e. SEAMCALL #GPs when executed in usermode. Note #3! The aforementioned Trust Domain spec uses confusing pseudocode that says that SEAMCALL will #UD if executed "inSEAM", but "inSEAM" specifically means in SEAM Root Mode, i.e. in the TDX-Module. The long- form description explicitly states that SEAMCALL generates an exit when executed in "SEAM VMX non-root operation". But that's a moot point as the TDX-Module injects #UD if the guest attempts to execute SEAMCALL, as documented in the "Unconditionally Blocked Instructions" section of the TDX-Module base specification. Cc: stable@vger.kernel.org Cc: Kai Huang <kai.huang@intel.com> Cc: Xiaoyao Li <xiaoyao.li@intel.com> Cc: Rick Edgecombe <rick.p.edgecombe@intel.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Binbin Wu <binbin.wu@linux.intel.com> Reviewed-by: Kai Huang <kai.huang@intel.com> Reviewed-by: Binbin Wu <binbin.wu@linux.intel.com> Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com> Link: https://lore.kernel.org/r/20251016182148.69085-2-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.com>
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…/kernel/git/kvmarm/kvmarm into HEAD KVM/arm64 fixes for 6.18, take #3 - Only adjust the ID registers when no irqchip has been created once per VM run, instead of doing it once per vcpu, as this otherwise triggers a pretty bad conbsistency check failure in the sysreg code. - Make sure the per-vcpu Fine Grain Traps are computed before we load the system registers on the HW, as we otherwise start running without anything set until the first preemption of the vcpu.
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For some reason, of_find_node_with_property() is creating a spinlock recursion issue along with fwnode_count_parents(), and this issue is making all MediaTek boards unbootable. As of kernel v6.18-rc6, there are only three users of this function, one of which is this driver. Migrate away from of_find_node_with_property() by adding a local scpsys_get_legacy_regmap_node() function, which acts similarly to of_find_node_with_property(), and calling the former in place of the latter. This resolves the following spinlock recursion issue: [ 1.773979] BUG: spinlock recursion on CPU#2, kworker/u24:1/60 [ 1.790485] lock: devtree_lock+0x0/0x40, .magic: dead4ead, .owner: kworker/u24:1/60, .owner_cpu: 2 [ 1.791644] CPU: 2 UID: 0 PID: 60 Comm: kworker/u24:1 Tainted: G W 6.18.0-rc6 #3 PREEMPT [ 1.791649] Tainted: [W]=WARN [ 1.791650] Hardware name: MediaTek Genio-510 EVK (DT) [ 1.791653] Workqueue: events_unbound deferred_probe_work_func [ 1.791658] Call trace: [ 1.791659] show_stack+0x18/0x30 (C) [ 1.791664] dump_stack_lvl+0x68/0x94 [ 1.791668] dump_stack+0x18/0x24 [ 1.791672] spin_dump+0x78/0x88 [ 1.791678] do_raw_spin_lock+0x110/0x140 [ 1.791684] _raw_spin_lock_irqsave+0x58/0x6c [ 1.791690] of_get_parent+0x28/0x74 [ 1.791694] of_fwnode_get_parent+0x38/0x7c [ 1.791700] fwnode_count_parents+0x34/0xf0 [ 1.791705] fwnode_full_name_string+0x28/0x120 [ 1.791710] device_node_string+0x3e4/0x50c [ 1.791715] pointer+0x294/0x430 [ 1.791718] vsnprintf+0x21c/0x5bc [ 1.791722] vprintk_store+0x108/0x47c [ 1.791728] vprintk_emit+0xc4/0x350 [ 1.791732] vprintk_default+0x34/0x40 [ 1.791736] vprintk+0x24/0x30 [ 1.791740] _printk+0x60/0x8c [ 1.791744] of_node_release+0x154/0x194 [ 1.791749] kobject_put+0xa0/0x120 [ 1.791753] of_node_put+0x18/0x28 [ 1.791756] of_find_node_with_property+0x74/0x100 [ 1.791761] scpsys_probe+0x338/0x5e0 [ 1.791765] platform_probe+0x5c/0xa4 [ 1.791770] really_probe+0xbc/0x2ac [ 1.791774] __driver_probe_device+0x78/0x118 [ 1.791779] driver_probe_device+0x3c/0x170 [ 1.791783] __device_attach_driver+0xb8/0x150 [ 1.791788] bus_for_each_drv+0x88/0xe8 [ 1.791792] __device_attach+0x9c/0x1a0 [ 1.791796] device_initial_probe+0x14/0x20 [ 1.791801] bus_probe_device+0xa0/0xa4 [ 1.791805] deferred_probe_work_func+0x88/0xd0 [ 1.791809] process_one_work+0x1e8/0x448 [ 1.791813] worker_thread+0x1ac/0x340 [ 1.791816] kthread+0x138/0x220 [ 1.791821] ret_from_fork+0x10/0x20 Fixes: c29345f ("pmdomain: mediatek: Refactor bus protection regmaps retrieval") Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Tested-by: Louis-Alexis Eyraud <louisalexis.eyraud@collabora.com> Tested-by: Macpaul Lin <macpaul.lin@mediatek.com> Reviewed-by: Macpaul Lin <macpaul.lin@mediatek.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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The U-Blox EVK-M101 enumerates as 1546:0506 [1] with four FTDI interfaces: - EVK-M101 current sensors - EVK-M101 I2C - EVK-M101 UART - EVK-M101 port D Only the third USB interface is a UART. This change lets ftdi_sio probe the VID/PID and registers only interface #3 as a TTY, leaving the rest available for other drivers. [1] usb 5-1.3: new high-speed USB device number 11 using xhci_hcd usb 5-1.3: New USB device found, idVendor=1546, idProduct=0506, bcdDevice= 8.00 usb 5-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=0 usb 5-1.3: Product: EVK-M101 usb 5-1.3: Manufacturer: u-blox AG Datasheet: https://content.u-blox.com/sites/default/files/documents/EVK-M10_UserGuide_UBX-21003949.pdf Signed-off-by: Oleksandr Suvorov <cryosay@gmail.com> Link: https://lore.kernel.org/20250926060235.3442748-1-cryosay@gmail.com/ Cc: stable@vger.kernel.org Signed-off-by: Johan Hovold <johan@kernel.org>
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