From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7AC8217C21C; Thu, 30 Apr 2026 00:29:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.10 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777508976; cv=none; b=uJPnGKePfGb2K5Bwa4DDfgsFu2KazB+Ik6T5ZJANCoTHn3w2cFjgJA4rEk7vloOKs1QtfVgW58JZGwbw6QlvjhKay6lhglYHS4Wo35G0boBIpyoBJ4WHr0NQo03O3TGPA+AbAAaaeMWu9MkXzt627SDS78nstufTYRo1/zsZ/cc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777508976; c=relaxed/simple; bh=u+mAU+2ACD5HlTJIsOgQLMOWjvExUPaLvfx7XhWNVcQ=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=Ge06iY+20li9rIcP0JOg1DnZ9XRP28SzDxz1lWXtXbrRdxtsnyoYjExRaktiBRnpUrCAPeU+kp/zZDaMxV21t4+U8OrdvNlgUbfw20NVWHvfpW/+z/m3XYDgHuDfo+f5y8dZzeWg8qWULHZ7LXXtJHGDxrCZlTZjDO9Oc+AbJ3g= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=eJplUihJ; arc=none smtp.client-ip=192.198.163.10 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="eJplUihJ" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1777508974; x=1809044974; h=date:from:to:cc:subject:message-id:references: mime-version:content-transfer-encoding:in-reply-to; bh=u+mAU+2ACD5HlTJIsOgQLMOWjvExUPaLvfx7XhWNVcQ=; b=eJplUihJQFiMENlvgv6i/OBVRCpDceI5H5rS8wX2inGlRwxwI0oTJYkU 0zqJ08PFDxA+kgYZHad6QEboFbFK35cFAGYgGN44xyns1FcCKFD7kBYw3 fYPrWohCbtJBOiHQaw28WKvarnhnJol3cHUENHbs/wz38pRUQbfPvwIpR 7xhc853NgaIm0jGevD5qn3G/Q6Q3pZN/r3Dx1OvsDpQ224rF6RYDKfuLp helDEn/iH+tkLmUmOrHm/F/kGOpLTNq72EnZYbCy8hJra0eTDnfaCXm4U ZN6XHGy07iqh9Hzft4ofa3WS28noCcjsJB+LtnPY1m6T8BqogL1C/mHri g==; X-CSE-ConnectionGUID: JL5qWg+cQza5vOjPvZWo/w== X-CSE-MsgGUID: f9hzQEqHRWuJLdBLyf3Ewg== X-IronPort-AV: E=McAfee;i="6800,10657,11771"; a="89825872" X-IronPort-AV: E=Sophos;i="6.23,207,1770624000"; d="scan'208";a="89825872" Received: from fmviesa002.fm.intel.com ([10.60.135.142]) by fmvoesa104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Apr 2026 17:29:33 -0700 X-CSE-ConnectionGUID: bjkpnPIORPqr710/UgULsQ== X-CSE-MsgGUID: V3VIqX+NQPuoLZ0YSMyLEQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,207,1770624000"; d="scan'208";a="257752349" Received: from igk-lkp-server01.igk.intel.com (HELO bdf09bfdbd5f) ([10.211.93.152]) by fmviesa002.fm.intel.com with ESMTP; 29 Apr 2026 17:29:29 -0700 Received: from kbuild by bdf09bfdbd5f with local (Exim 4.98.2) (envelope-from ) id 1wIFHS-000000004gn-2Zzy; Thu, 30 Apr 2026 00:29:26 +0000 Date: Thu, 30 Apr 2026 02:28:54 +0200 From: kernel test robot To: Aaron Tomlin , corbet@lwn.net, skhan@linuxfoundation.org Cc: oe-kbuild-all@lists.linux.dev, tglx@kernel.org, akpm@linux-foundation.org, bp@alien8.de, rdunlap@infradead.org, dave.hansen@linux.intel.com, feng.tang@linux.alibaba.com, pawan.kumar.gupta@linux.intel.com, dapeng1.mi@linux.intel.com, kees@kernel.org, elver@google.com, paulmck@kernel.org, lirongqing@baidu.com, bhelgaas@google.com, bigeasy@linutronix.de, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2] docs: kernel-parameters: document scope of irqaffinity= parameter Message-ID: <202604300215.1Alrqyxi-lkp@intel.com> References: <20260421150911.42404-1-atomlin@atomlin.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20260421150911.42404-1-atomlin@atomlin.com> Hi Aaron, kernel test robot noticed the following build warnings: [auto build test WARNING on lwn/docs-next] [also build test WARNING on linus/master v7.1-rc1 next-20260429] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Aaron-Tomlin/docs-kernel-parameters-document-scope-of-irqaffinity-parameter/20260423-221944 base: git://git.lwn.net/linux.git docs-next patch link: https://lore.kernel.org/r/20260421150911.42404-1-atomlin%40atomlin.com patch subject: [PATCH v2] docs: kernel-parameters: document scope of irqaffinity= parameter compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) docutils: docutils (Docutils 0.21.2, Python 3.13.5, on linux) reproduce: (https://download.01.org/0day-ci/archive/20260430/202604300215.1Alrqyxi-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202604300215.1Alrqyxi-lkp@intel.com/ All warnings (new ones prefixed by >>): Warning: tools/docs/documentation-file-ref-check references a file that doesn't exist: Documentation/devicetree/dt-object-internal.txt Warning: tools/docs/documentation-file-ref-check references a file that doesn't exist: m,^Documentation/scheduler/sched-pelt Warning: tools/docs/documentation-file-ref-check references a file that doesn't exist: m,(Documentation/translations/[ Using alabaster theme Documentation/core-api/irq/managed_irq.rst:97: ERROR: Unexpected indentation. [docutils] >> Documentation/core-api/irq/managed_irq.rst:104: WARNING: Block quote ends without a blank line; unexpected unindent. [docutils] Documentation/core-api/irq/managed_irq.rst:109: ERROR: Unexpected indentation. [docutils] Documentation/core-api/irq/managed_irq.rst:111: ERROR: Unexpected indentation. [docutils] Documentation/core-api/irq/managed_irq.rst:118: WARNING: Block quote ends without a blank line; unexpected unindent. [docutils] Documentation/core-api/irq/managed_irq.rst:122: ERROR: Unexpected indentation. [docutils] Documentation/core-api/irq/managed_irq.rst:123: WARNING: Block quote ends without a blank line; unexpected unindent. [docutils] vim +104 Documentation/core-api/irq/managed_irq.rst 65 66 - A QEMU instance is booted with "-device virtio-scsi-pci". 67 The MSI‑X device exposes 11 interrupts: 3 "management" interrupts and 8 68 "queue" interrupts. The driver requests the 8 queue interrupts, each of which 69 is affine to exactly one CPU. If that CPU goes offline, the interrupt is shut 70 down. 71 72 Assuming interrupt 48 is one of the queue interrupts, the following appears:: 73 74 /proc/irq/48/effective_affinity_list:7 75 /proc/irq/48/smp_affinity_list:7 76 77 This indicates that the interrupt is served only by CPU7. Shutting down CPU7 78 does not migrate the interrupt to another CPU:: 79 80 /proc/irq/48/effective_affinity_list:0 81 /proc/irq/48/smp_affinity_list:7 82 83 If the Linux kernel was built with Kconfig CONFIG_GENERIC_IRQ_DEBUGFS 84 enabled, this can be verified via the debugfs interface (e.g., 85 /sys/kernel/debug/irq/irqs/48). The dstate field will include 86 IRQD_IRQ_DISABLED, IRQD_IRQ_MASKED and IRQD_MANAGED_SHUTDOWN. 87 A managed IRQ will also include IRQD_AFFINITY_MANAGED. For example: 88 89 # cat /sys/kernel/debug/irq/irqs/87 90 handler: handle_edge_irq 91 device: 0000:41:00.0 92 status: 0x00000000 93 istate: 0x00004000 94 ddepth: 0 95 wdepth: 0 96 dstate: 0x19601200 97 IRQD_ACTIVATED 98 IRQD_IRQ_STARTED 99 IRQD_SINGLE_TARGET 100 IRQD_AFFINITY_SET 101 IRQD_AFFINITY_MANAGED 102 IRQD_AFFINITY_ON_ACTIVATE 103 IRQD_HANDLE_ENFORCE_IRQCTX > 104 node: 0 105 affinity: 9 106 effectiv: 9 107 pending: 108 domain: IR-PCI-MSIX-0000:41:00.0-12 109 hwirq: 0x8 110 chip: IR-PCI-MSIX-0000:41:00.0 111 flags: 0x430 112 IRQCHIP_SKIP_SET_WAKE 113 IRQCHIP_ONESHOT_SAFE 114 115 address_hi: 0x00000000 116 address_lo: 0xfee00000 117 msg_data: 0x00000008 118 parent: 119 domain: AMD-IR-3-14 120 hwirq: 0x41000000 121 chip: AMD-IR 122 flags: 0x0 123 parent: 124 domain: VECTOR 125 hwirq: 0x57 126 chip: APIC 127 flags: 0x0 128 Vector: 33 129 Target: 9 130 move_in_progress: 0 131 is_managed: 1 132 can_reserve: 0 133 has_reserved: 0 134 cleanup_pending: 0 135 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki