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SubjectRe: [PATCH] KVM: Check the allocation of pv cpu mask
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On 20/9/2 01:35, kernel test robot wrote:
> Hi Haiwei,
>
> Thank you for the patch! Yet something to improve:
>
> [auto build test ERROR on kvm/linux-next]
> [also build test ERROR on linus/master v5.9-rc3 next-20200828]
> [cannot apply to linux/master vhost/linux-next]
> [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]
>
> url: https://github.com/0day-ci/linux/commits/Haiwei-Li/KVM-Check-the-allocation-of-pv-cpu-mask/20200901-195412
> base: https://git.kernel.org/pub/scm/virt/kvm/kvm.git linux-next
> config: x86_64-randconfig-a011-20200901 (attached as .config)
> compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project c10e63677f5d20f18010f8f68c631ddc97546f7d)
> 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
> # install x86_64 cross compiling tool for clang build
> # apt-get install binutils-x86-64-linux-gnu
> # save the attached .config to linux build tree
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@intel.com>
>
> All errors (new ones prefixed by >>):
>
>>> arch/x86/kernel/kvm.c:801:35: error: use of undeclared identifier 'kvm_send_ipi_mask_allbutself'
> apic->send_IPI_mask_allbutself = kvm_send_ipi_mask_allbutself;
> ^
> 1 error generated.

THX, i will fix and resend.

>
> # https://github.com/0day-ci/linux/commit/13dd13ab0aefbb5c31bd8681831e6a11ac381509
> git remote add linux-review https://github.com/0day-ci/linux
> git fetch --no-tags linux-review Haiwei-Li/KVM-Check-the-allocation-of-pv-cpu-mask/20200901-195412
> git checkout 13dd13ab0aefbb5c31bd8681831e6a11ac381509
> vim +/kvm_send_ipi_mask_allbutself +801 arch/x86/kernel/kvm.c
>
> 791
> 792 if (alloc)
> 793 for_each_possible_cpu(cpu) {
> 794 if (!zalloc_cpumask_var_node(
> 795 per_cpu_ptr(&__pv_cpu_mask, cpu),
> 796 GFP_KERNEL, cpu_to_node(cpu))) {
> 797 goto zalloc_cpumask_fail;
> 798 }
> 799 }
> 800
> > 801 apic->send_IPI_mask_allbutself = kvm_send_ipi_mask_allbutself;
> 802 pv_ops.mmu.flush_tlb_others = kvm_flush_tlb_others;
> 803 return 0;
> 804
> 805 zalloc_cpumask_fail:
> 806 kvm_free_pv_cpu_mask();
> 807 return -ENOMEM;
> 808 }
> 809 arch_initcall(kvm_alloc_cpumask);
> 810
>
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
>

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