Hi Wei, I love your patch! Perhaps something to improve: [auto build test WARNING on tip/x86/core] [also build test WARNING on asm-generic/master iommu/next tip/timers/core pci/next linus/master v5.10-rc5] [cannot apply to next-20201124] [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/Wei-Liu/Introducing-Linux-root-partition-support-for-Microsoft-Hypervisor/20201125-011026 base: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 238c91115cd05c71447ea071624a4c9fe661f970 config: x86_64-randconfig-a003-20201125 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 77e98eaee2e8d4b9b297b66fda5b1e51e2a69999) 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 # https://github.com/0day-ci/linux/commit/ae7533bcd9667c0f23b545d941d3c68460f91ea2 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Wei-Liu/Introducing-Linux-root-partition-support-for-Microsoft-Hypervisor/20201125-011026 git checkout ae7533bcd9667c0f23b545d941d3c68460f91ea2 # 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@xxxxxxxxx> All warnings (new ones prefixed by >>): arch/x86/hyperv/irqdomain.c:303:3: error: field designator 'domain_free_irqs' does not refer to any field in type 'struct msi_domain_ops' .domain_free_irqs = hv_msi_domain_free_irqs, ^ >> arch/x86/hyperv/irqdomain.c:316:28: warning: no previous prototype for function 'hv_create_pci_msi_domain' [-Wmissing-prototypes] struct irq_domain * __init hv_create_pci_msi_domain(void) ^ arch/x86/hyperv/irqdomain.c:316:1: note: declare 'static' if the function is not intended to be used outside of this translation unit struct irq_domain * __init hv_create_pci_msi_domain(void) ^ static 1 warning and 1 error generated. vim +/hv_create_pci_msi_domain +316 arch/x86/hyperv/irqdomain.c 301 302 static struct msi_domain_ops pci_msi_domain_ops = { > 303 .domain_free_irqs = hv_msi_domain_free_irqs, 304 .msi_prepare = pci_msi_prepare, 305 }; 306 307 static struct msi_domain_info hv_pci_msi_domain_info = { 308 .flags = MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS | 309 MSI_FLAG_PCI_MSIX, 310 .ops = &pci_msi_domain_ops, 311 .chip = &hv_pci_msi_controller, 312 .handler = handle_edge_irq, 313 .handler_name = "edge", 314 }; 315 > 316 struct irq_domain * __init hv_create_pci_msi_domain(void) 317 { 318 struct irq_domain *d = NULL; 319 struct fwnode_handle *fn; 320 321 fn = irq_domain_alloc_named_fwnode("HV-PCI-MSI"); 322 if (fn) 323 d = pci_msi_create_irq_domain(fn, &hv_pci_msi_domain_info, x86_vector_domain); 324 325 /* No point in going further if we can't get an irq domain */ 326 BUG_ON(!d); 327 328 return d; 329 } 330 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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