The _PAGE_NX macro is new. I will add it to smatch_data/kernel.unconstant_macros to silence this false positive.
regards, dan carpenter On Fri, Mar 07, 2014 at 08:02:15AM +0800, kbuild test robot wrote: > TO: Matt Fleming <matt.flem...@intel.com> > CC: Ingo Molnar <mi...@kernel.org> > > > Hi Ingo, > > FYI, there are new smatch warnings show up in > > tree: git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git master > head: 3a3dcbe22a11a5a0cc9310d5052be3edf4477e56 > commit: b448eb4a13cd5c469518e14e54fdb9bab66dfdcc [28/29] Merge branch > 'x86/efi' > :::::: branch date: 10 hours ago > :::::: commit date: 10 hours ago > > arch/x86/platform/efi/efi.c:1084 kexec_enter_virtual_mode() warn: bitwise AND > condition is false here > > git remote add tip git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git > git remote update tip > git checkout b448eb4a13cd5c469518e14e54fdb9bab66dfdcc > vim +1084 arch/x86/platform/efi/efi.c > > fabb37c7 Borislav Petkov 2014-01-18 1068 BUG_ON(!efi.systab); > fabb37c7 Borislav Petkov 2014-01-18 1069 > fabb37c7 Borislav Petkov 2014-01-18 1070 efi_sync_low_kernel_mappings(); > fabb37c7 Borislav Petkov 2014-01-18 1071 > fabb37c7 Borislav Petkov 2014-01-18 1072 /* > fabb37c7 Borislav Petkov 2014-01-18 1073 * Now that EFI is in virtual > mode, update the function > fabb37c7 Borislav Petkov 2014-01-18 1074 * pointers in the runtime > service table to the new virtual addresses. > fabb37c7 Borislav Petkov 2014-01-18 1075 * > fabb37c7 Borislav Petkov 2014-01-18 1076 * Call EFI services through > wrapper functions. > fabb37c7 Borislav Petkov 2014-01-18 1077 */ > fabb37c7 Borislav Petkov 2014-01-18 1078 efi.runtime_version = > efi_systab.hdr.revision; > 994448f1 Matt Fleming 2014-03-05 1079 > 994448f1 Matt Fleming 2014-03-05 1080 native_runtime_setup(); > 994448f1 Matt Fleming 2014-03-05 1081 > fabb37c7 Borislav Petkov 2014-01-18 1082 efi.set_virtual_address_map = > NULL; > fabb37c7 Borislav Petkov 2014-01-18 1083 > fabb37c7 Borislav Petkov 2014-01-18 @1084 if (efi_enabled(EFI_OLD_MEMMAP) > && (__supported_pte_mask & _PAGE_NX)) > fabb37c7 Borislav Petkov 2014-01-18 1085 > runtime_code_page_mkexec(); > fabb37c7 Borislav Petkov 2014-01-18 1086 > fabb37c7 Borislav Petkov 2014-01-18 1087 /* clean DUMMY object */ > fabb37c7 Borislav Petkov 2014-01-18 1088 > efi.set_variable(efi_dummy_name, &EFI_DUMMY_GUID, > fabb37c7 Borislav Petkov 2014-01-18 1089 > EFI_VARIABLE_NON_VOLATILE | > fabb37c7 Borislav Petkov 2014-01-18 1090 > EFI_VARIABLE_BOOTSERVICE_ACCESS | > fabb37c7 Borislav Petkov 2014-01-18 1091 > EFI_VARIABLE_RUNTIME_ACCESS, > fabb37c7 Borislav Petkov 2014-01-18 1092 0, NULL); > > :::::: The code at line 1084 was first introduced by commit > :::::: fabb37c736f9f688fe3eec98550a5c032a07cfaa x86/efi: Split > efi_enter_virtual_mode > > :::::: TO: Borislav Petkov <b...@suse.de> > :::::: CC: Matt Fleming <matt.flem...@intel.com> > > --- > 0-DAY kernel build testing backend Open Source Technology Center > http://lists.01.org/mailman/listinfo/kbuild Intel Corporation _______________________________________________ kbuild mailing list kbuild@lists.01.org https://lists.01.org/mailman/listinfo/kbuild
