tree: https://git.kernel.org/pub/scm/linux/kernel/git/luto/linux.git x86/fixes head: 9161537ca9aace2dc6378f51ce1b983f22c4b860 commit: a64327dc8b9ba8516b68f62da88dc52856fc256f [24/25] x86/fpu: Make the EFI FPU calling convention explicit config: i386-randconfig-a006-20210118 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/luto/linux.git/commit/?id... git remote add luto https://git.kernel.org/pub/scm/linux/kernel/git/luto/linux.git git fetch --no-tags luto x86/fixes git checkout a64327dc8b9ba8516b68f62da88dc52856fc256f # 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&gt; All errors (new ones prefixed by >>): In file included from arch/x86/platform/efi/quirks.c:16: arch/x86/platform/efi/quirks.c: In function 'efi_recover_from_page_fault': 81 | efi_fpu_end(); \ | ^~~~~~~~~~~ arch/x86/platform/efi/quirks.c:733:2: note: in expansion of macro 'arch_efi_call_virt_teardown' 733 | arch_efi_call_virt_teardown(); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors -- In file included from drivers/firmware/efi/runtime-wrappers.c:36: drivers/firmware/efi/runtime-wrappers.c: In function 'efi_call_rts': 74 | efi_fpu_begin(); \ | ^~~~~~~~~~~~~ include/linux/efi.h:1136:2: note: in expansion of macro 'arch_efi_call_virt_setup' 1136 | arch_efi_call_virt_setup(); \ | ^~~~~~~~~~~~~~~~~~~~~~~~ drivers/firmware/efi/runtime-wrappers.c:43:2: note: in expansion of macro 'efi_call_virt_pointer' 43 | efi_call_virt_pointer(efi.runtime, f, args) | ^~~~~~~~~~~~~~~~~~~~~ drivers/firmware/efi/runtime-wrappers.c:191:12: note: in expansion of macro 'efi_call_virt' 191 | status = efi_call_virt(get_time, (efi_time_t *)arg1, | ^~~~~~~~~~~~~ 81 | efi_fpu_end(); \ | ^~~~~~~~~~~ include/linux/efi.h:1142:2: note: in expansion of macro 'arch_efi_call_virt_teardown' 1142 | arch_efi_call_virt_teardown(); \ | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/firmware/efi/runtime-wrappers.c:43:2: note: in expansion of macro 'efi_call_virt_pointer' 43 | efi_call_virt_pointer(efi.runtime, f, args) | ^~~~~~~~~~~~~~~~~~~~~ drivers/firmware/efi/runtime-wrappers.c:191:12: note: in expansion of macro 'efi_call_virt' 191 | status = efi_call_virt(get_time, (efi_time_t *)arg1, | ^~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +81 arch/x86/include/asm/efi.h 70 71 #ifdef CONFIG_X86_32 72 #define arch_efi_call_virt_setup() \ 73 ({ \ 75 firmware_restrict_branch_speculation_start(); \ 76 }) 77 78 #define arch_efi_call_virt_teardown() \ 79 ({ \ 80 firmware_restrict_branch_speculation_end(); \ 82 }) 83 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org