From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.19]) (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 2BD5A314D2D; Wed, 18 Feb 2026 12:35:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.19 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771418157; cv=none; b=Y/R9radv9QN7p7yLuunNijcxxpMycMYKDQeWEX811JwFO8/P+CKmVb2OD9wzhzSD71/whMHCTVsOinX1h+IGf4+kkIT1fAGHG3O819VupLfYWYpWE7OpICC4Gl9qSZj2vlfjrbhK+SzO91qFrSVsLTMj+TnGEBEcuoUooZtVG1Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771418157; c=relaxed/simple; bh=o0SwT6PYBpYEzsFfqbHKWMYYtkEGcaEQ+KeM+TT+0OY=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=K8l4GWwGdy+Q8Ck/1OoOjRIJ5SIuppGTWG469Vxuv07tHzTu5QTvOSXKGOXoVqiqLTkOJP51y/0whgf/8pCEGHXjVov56uWfL2UhQDIGiftOXcCqrx4PChmB+Vd+mLafPjMjyBTZSfFCbOfv33XtOhIiNeJawrv7yMferi84SHE= 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=Zk/deMNN; arc=none smtp.client-ip=192.198.163.19 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="Zk/deMNN" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1771418155; x=1802954155; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=o0SwT6PYBpYEzsFfqbHKWMYYtkEGcaEQ+KeM+TT+0OY=; b=Zk/deMNNjxfPrfhWoJfkO+q/qnd3ywWwb4bMZu7wQmOYYdRN348iDoVv I4XbljsuSBQHCmJRggrMAcoQRgaM/8BJMoTNfj2ElDn54ItIEjityMUkQ e6iHZcYyLuQFdVTdxThIJ0bYMDSH5kHZatHUJxazW05xJhobmhrj/eLbY VTjdOFhDEOAX4Xgyapdgme0SY3iOvgvai2UXOWRU/BCc4wz/ml2JjMmfE SdT8oxUMV1nAkGuITK1P3pAJGFDYJPWlTD4fL4EGpky+Xo9dFoltbEGl6 svmSO+aUZqe+e+xiLMoomJ9y1A/+VKWmcW6E3qXpc0x6IfHW0kHqEEjFf w==; X-CSE-ConnectionGUID: aHhLjZ5lSsWDlC9vyzipdg== X-CSE-MsgGUID: MDRxuwcBTj2F81iSodk0KQ== X-IronPort-AV: E=McAfee;i="6800,10657,11704"; a="71512364" X-IronPort-AV: E=Sophos;i="6.21,298,1763452800"; d="scan'208";a="71512364" Received: from orviesa010.jf.intel.com ([10.64.159.150]) by fmvoesa113.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Feb 2026 04:35:54 -0800 X-CSE-ConnectionGUID: vmHA2hqBRh+qBrhoJ0n5Tg== X-CSE-MsgGUID: sUEnwvBkSaSlIaNd1mGyOg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,298,1763452800"; d="scan'208";a="213424457" Received: from lkp-server01.sh.intel.com (HELO 765f4a05e27f) ([10.239.97.150]) by orviesa010.jf.intel.com with ESMTP; 18 Feb 2026 04:35:51 -0800 Received: from kbuild by 765f4a05e27f with local (Exim 4.98.2) (envelope-from ) id 1vsgmS-000000012L2-308U; Wed, 18 Feb 2026 12:35:48 +0000 Date: Wed, 18 Feb 2026 20:35:08 +0800 From: kernel test robot To: Mukesh R , linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org Cc: oe-kbuild-all@lists.linux.dev, kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, longli@microsoft.com, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com Subject: Re: [PATCH v2] x86/hyperv: Reserve 3 interrupt vectors used exclusively by mshv Message-ID: <202602182000.O5dSFVVd-lkp@intel.com> References: <20260217231158.1184736-1-mrathor@linux.microsoft.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=us-ascii Content-Disposition: inline In-Reply-To: <20260217231158.1184736-1-mrathor@linux.microsoft.com> Hi Mukesh, kernel test robot noticed the following build warnings: [auto build test WARNING on tip/x86/core] [also build test WARNING on linus/master v6.19 next-20260217] [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/Mukesh-R/x86-hyperv-Reserve-3-interrupt-vectors-used-exclusively-by-mshv/20260218-071406 base: tip/x86/core patch link: https://lore.kernel.org/r/20260217231158.1184736-1-mrathor%40linux.microsoft.com patch subject: [PATCH v2] x86/hyperv: Reserve 3 interrupt vectors used exclusively by mshv config: x86_64-rhel-9.4 (https://download.01.org/0day-ci/archive/20260218/202602182000.O5dSFVVd-lkp@intel.com/config) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260218/202602182000.O5dSFVVd-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/202602182000.O5dSFVVd-lkp@intel.com/ All warnings (new ones prefixed by >>): >> arch/x86/kernel/cpu/mshyperv.c:485:13: warning: 'hv_reserve_irq_vectors' defined but not used [-Wunused-function] 485 | static void hv_reserve_irq_vectors(void) | ^~~~~~~~~~~~~~~~~~~~~~ vim +/hv_reserve_irq_vectors +485 arch/x86/kernel/cpu/mshyperv.c 480 481 /* 482 * Reserve vectors hard coded in the hypervisor. If used outside, the hypervisor 483 * will either crash or hang or attempt to break into debugger. 484 */ > 485 static void hv_reserve_irq_vectors(void) 486 { 487 #define HYPERV_DBG_FASTFAIL_VECTOR 0x29 488 #define HYPERV_DBG_ASSERT_VECTOR 0x2C 489 #define HYPERV_DBG_SERVICE_VECTOR 0x2D 490 491 if (cpu_feature_enabled(X86_FEATURE_FRED)) 492 return; 493 494 if (test_and_set_bit(HYPERV_DBG_ASSERT_VECTOR, system_vectors) || 495 test_and_set_bit(HYPERV_DBG_SERVICE_VECTOR, system_vectors) || 496 test_and_set_bit(HYPERV_DBG_FASTFAIL_VECTOR, system_vectors)) 497 BUG(); 498 499 pr_info("Hyper-V:reserve vectors: %d %d %d\n", HYPERV_DBG_ASSERT_VECTOR, 500 HYPERV_DBG_SERVICE_VECTOR, HYPERV_DBG_FASTFAIL_VECTOR); 501 } 502 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki