tree: https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git queue-4.19 head: 7a462d454a5354302318d17cb32da8ec0c8e1a35 commit: 763f7e59b05ade60cfafee61e37cb10b3a2a013f [201/440] PCI: Add ACS quirk for Intel Root Complex Integrated Endpoints config: xtensa-allyesconfig (attached as .config) compiler: xtensa-linux-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 763f7e59b05ade60cfafee61e37cb10b3a2a013f # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=xtensa If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; Note: the sashal-linux-stable/queue-4.19 HEAD 7a462d454a5354302318d17cb32da8ec0c8e1a35 builds fine. It only hurts bisectibility. All errors (new ones prefixed by >>): In file included from include/linux/kernel.h:10, from drivers/pci/quirks.c:16: include/linux/scatterlist.h: In function 'sg_set_buf': arch/xtensa/include/asm/page.h:182:9: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] 182 | ((pfn) >= ARCH_PFN_OFFSET && ((pfn) - ARCH_PFN_OFFSET) < max_mapnr) | ^~ include/linux/compiler.h:77:42: note: in definition of macro 'unlikely' 77 | # define unlikely(x) __builtin_expect(!!(x), 0) | ^ include/linux/scatterlist.h:143:2: note: in expansion of macro 'BUG_ON' 143 | BUG_ON(!virt_addr_valid(buf)); | ^~~~~~ arch/xtensa/include/asm/page.h:190:32: note: in expansion of macro 'pfn_valid' 190 | #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) | ^~~~~~~~~ include/linux/scatterlist.h:143:10: note: in expansion of macro 'virt_addr_valid' 143 | BUG_ON(!virt_addr_valid(buf)); | ^~~~~~~~~~~~~~~ include/linux/dma-mapping.h: In function 'dma_map_resource': arch/xtensa/include/asm/page.h:182:9: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] 182 | ((pfn) >= ARCH_PFN_OFFSET && ((pfn) - ARCH_PFN_OFFSET) < max_mapnr) | ^~ include/linux/compiler.h:77:42: note: in definition of macro 'unlikely' 77 | # define unlikely(x) __builtin_expect(!!(x), 0) | ^ include/linux/dma-mapping.h:329:2: note: in expansion of macro 'BUG_ON' 329 | BUG_ON(pfn_valid(PHYS_PFN(phys_addr))); | ^~~~~~ include/linux/dma-mapping.h:329:9: note: in expansion of macro 'pfn_valid' 329 | BUG_ON(pfn_valid(PHYS_PFN(phys_addr))); | ^~~~~~~~~ drivers/pci/quirks.c: In function 'pci_quirk_rciep_acs': 4556 | return pci_acs_ctrl_enabled(acs_flags, | ^~~~~~~~~~~~~~~~~~~~ | pci_acs_path_enabled drivers/pci/quirks.c: In function 'quirk_switchtec_ntb_dma_alias': drivers/pci/quirks.c:5164:32: warning: variable 'mmio_sys_info' set but not used [-Wunused-but-set-variable] 5164 | struct sys_info_regs __iomem *mmio_sys_info; | ^~~~~~~~~~~~~ In file included from drivers/pci/quirks.c:18: drivers/pci/quirks.c: At top level: drivers/pci/quirks.c:5348:25: error: 'PCI_VENDOR_ID_PERICOM' undeclared here (not in a function); did you mean 'PCI_VENDOR_ID_MYRICOM'? 5348 | DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_PERICOM, 0x400e, pci_fixup_no_pme); | ^~~~~~~~~~~~~~~~~~~~~ include/linux/pci.h:1855:7: note: in definition of macro 'DECLARE_PCI_FIXUP_SECTION' 1855 | = { vendor, device, class, class_shift, hook }; | ^~~~~~ drivers/pci/quirks.c:5348:1: note: in expansion of macro 'DECLARE_PCI_FIXUP_FINAL' 5348 | DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_PERICOM, 0x400e, pci_fixup_no_pme); | ^~~~~~~~~~~~~~~~~~~~~~~ drivers/pci/quirks.c: In function 'quirk_netmos': drivers/pci/quirks.c:2201:6: warning: this statement may fall through [-Wimplicit-fallthrough=] 2201 | if (dev->subsystem_vendor == PCI_VENDOR_ID_IBM && | ^ drivers/pci/quirks.c:2205:2: note: here 2205 | case PCI_DEVICE_ID_NETMOS_9735: | ^~~~ cc1: some warnings being treated as errors vim +4556 drivers/pci/quirks.c 4545 4546 static int pci_quirk_rciep_acs(struct pci_dev *dev, u16 acs_flags) 4547 { 4548 /* 4549 * Intel RCiEP's are required to allow p2p only on translated 4550 * addresses. Refer to Intel VT-d specification, r3.1, sec 3.16, 4551 * "Root-Complex Peer to Peer Considerations". 4552 */ 4553 if (pci_pcie_type(dev) != PCI_EXP_TYPE_RC_END) 4554 return -ENOTTY; 4555 4557 PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF); 4558 } 4559 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org