linux-kernel - arch/arm/kvm/../../../virt/kvm/kvm_main.c:633:12: warning: no previous prototype for 'kvm_arch_post_init

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Message-ID: <202007112151.J8f90Ftk%lkp@intel.com>
Date:   Sat, 11 Jul 2020 21:24:54 +0800
From:   kernel test robot <lkp@...el.com>
To:     Junaid Shahid <junaids@...gle.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Thomas Gleixner <tglx@...utronix.de>,
        Paolo Bonzini <pbonzini@...hat.com>
Subject: arch/arm/kvm/../../../virt/kvm/kvm_main.c:633:12: warning: no
 previous prototype for 'kvm_arch_post_init_vm'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   1df0d8960499e58963fd6c8ac75e544f2b417b29
commit: 1aa9b9572b10529c2e64e2b8f44025d86e124308 kvm: x86: mmu: Recovery of shattered NX large pages
date:   8 months ago
config: arm-axm55xx_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 1aa9b9572b10529c2e64e2b8f44025d86e124308
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

>> arch/arm/kvm/../../../virt/kvm/kvm_main.c:633:12: warning: no previous prototype for 'kvm_arch_post_init_vm' [-Wmissing-prototypes]
     633 | int __weak kvm_arch_post_init_vm(struct kvm *kvm)
         |            ^~~~~~~~~~~~~~~~~~~~~
>> arch/arm/kvm/../../../virt/kvm/kvm_main.c:642:13: warning: no previous prototype for 'kvm_arch_pre_destroy_vm' [-Wmissing-prototypes]
     642 | void __weak kvm_arch_pre_destroy_vm(struct kvm *kvm)
         |             ^~~~~~~~~~~~~~~~~~~~~~~

vim +/kvm_arch_post_init_vm +633 arch/arm/kvm/../../../virt/kvm/kvm_main.c

   628	
   629	/*
   630	 * Called after the VM is otherwise initialized, but just before adding it to
   631	 * the vm_list.
   632	 */
 > 633	int __weak kvm_arch_post_init_vm(struct kvm *kvm)
   634	{
   635		return 0;
   636	}
   637	
   638	/*
   639	 * Called just after removing the VM from the vm_list, but before doing any
   640	 * other destruction.
   641	 */
 > 642	void __weak kvm_arch_pre_destroy_vm(struct kvm *kvm)
   643	{
   644	}
   645	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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