8:43 p.m.
Hi Haiwei,
FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 325d0eab4f31c6240b59d5b2b8042c88f59405b5
commit: 0f990222108d214a0924d920e6095b58107d7b59 KVM: Check the allocation of pv cpu mask
date: 9 days ago
config: i386-randconfig-a003-20200920 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
reproduce (this is a W=1 build):
git checkout 0f990222108d214a0924d920e6095b58107d7b59
# save the attached .config to linux build tree
make W=1 ARCH=i386
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
All errors (new ones prefixed by >>):
arch/x86/kernel/kvm.c: In function 'kvm_alloc_cpumask':
> arch/x86/kernel/kvm.c:802:35: error:
'kvm_send_ipi_mask_allbutself' undeclared (first use in this function)
802 | apic->send_IPI_mask_allbutself = kvm_send_ipi_mask_allbutself;
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/x86/kernel/kvm.c:802:35: note: each undeclared identifier is reported only once
for each function it appears in
#
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit...
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 0f990222108d214a0924d920e6095b58107d7b59
vim +/kvm_send_ipi_mask_allbutself +802 arch/x86/kernel/kvm.c
792
793 if (alloc)
794 for_each_possible_cpu(cpu) {
795 if (!zalloc_cpumask_var_node(
796 per_cpu_ptr(&__pv_cpu_mask, cpu),
797 GFP_KERNEL, cpu_to_node(cpu))) {
798 goto zalloc_cpumask_fail;
799 }
800 }
801
802 apic->send_IPI_mask_allbutself =
kvm_send_ipi_mask_allbutself;
803 pv_ops.mmu.flush_tlb_others =
kvm_flush_tlb_others;
804 return 0;
805
806 zalloc_cpumask_fail:
807 kvm_free_pv_cpu_mask();
808 return -ENOMEM;
809 }
810 arch_initcall(kvm_alloc_cpumask);
811
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0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org