linux-kernel - Re: [PATCH 2/3] LoongArch: Add paravirt support with vcpu_is

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Message-ID: <202511201009.WLpYNMAM-lkp@intel.com>
Date: Thu, 20 Nov 2025 10:51:50 +0800
From: kernel test robot <lkp@...el.com>
To: Bibo Mao <maobibo@...ngson.cn>, Paolo Bonzini <pbonzini@...hat.com>,
	Huacai Chen <chenhuacai@...nel.org>,
	WANG Xuerui <kernel@...0n.name>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...hat.com>, Will Deacon <will@...nel.org>,
	Boqun Feng <boqun.feng@...il.com>, Waiman Long <longman@...hat.com>,
	Juergen Gross <jgross@...e.com>,
	Ajay Kaher <ajay.kaher@...adcom.com>,
	Alexey Makhalov <alexey.makhalov@...adcom.com>,
	Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>
Cc: oe-kbuild-all@...ts.linux.dev, kvm@...r.kernel.org,
	loongarch@...ts.linux.dev, linux-kernel@...r.kernel.org,
	virtualization@...ts.linux.dev, x86@...nel.org
Subject: Re: [PATCH 2/3] LoongArch: Add paravirt support with
 vcpu_is_preempted()

Hi Bibo,

kernel test robot noticed the following build errors:

[auto build test ERROR on 6a23ae0a96a600d1d12557add110e0bb6e32730c]

url:    https://github.com/intel-lab-lkp/linux/commits/Bibo-Mao/LoongArch-KVM-Add-preempt-hint-feature-in-hypervisor-side/20251118-161212
base:   6a23ae0a96a600d1d12557add110e0bb6e32730c
patch link:    https://lore.kernel.org/r/20251118080656.2012805-3-maobibo%40loongson.cn
patch subject: [PATCH 2/3] LoongArch: Add paravirt support with vcpu_is_preempted()
config: loongarch-randconfig-r052-20251120 (https://download.01.org/0day-ci/archive/20251120/202511201009.WLpYNMAM-lkp@intel.com/config)
compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251120/202511201009.WLpYNMAM-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 <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202511201009.WLpYNMAM-lkp@intel.com/

All errors (new ones prefixed by >>):

>> arch/loongarch/kernel/paravirt.c:346:14: error: redefinition of 'vcpu_is_preempted'
     346 | bool notrace vcpu_is_preempted(int cpu)
         |              ^
   include/linux/sched.h:2263:20: note: previous definition is here
    2263 | static inline bool vcpu_is_preempted(int cpu)
         |                    ^
>> arch/loongarch/kernel/paravirt.c:348:9: error: use of undeclared identifier 'mp_ops'
     348 |         return mp_ops.vcpu_is_preempted(cpu);
         |                ^
   2 errors generated.


vim +/vcpu_is_preempted +346 arch/loongarch/kernel/paravirt.c

   345	
 > 346	bool notrace vcpu_is_preempted(int cpu)
   347	{
 > 348		return mp_ops.vcpu_is_preempted(cpu);

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki