# git rev-parse -q --verify b12483618d73c954c00faa49c276b4d9995fb95a^{commit} b12483618d73c954c00faa49c276b4d9995fb95a already have revision, skipping fetch # git checkout -q -f -B kisskb b12483618d73c954c00faa49c276b4d9995fb95a # git clean -qxdf # < git log -1 # commit b12483618d73c954c00faa49c276b4d9995fb95a # Author: Michael Ellerman # Date: Thu Feb 18 23:30:58 2021 +1100 # # powerpc/4xx: Fix build errors from mfdcr() # # lkp reported a build error in fsp2.o: # # CC arch/powerpc/platforms/44x/fsp2.o # {standard input}:577: Error: unsupported relocation against base # # Which comes from: # # pr_err("GESR0: 0x%08x\n", mfdcr(base + PLB4OPB_GESR0)); # # Where our mfdcr() macro is stringifying "base + PLB4OPB_GESR0", and # passing that to the assembler, which obviously doesn't work. # # The mfdcr() macro already checks that the argument is constant using # __builtin_constant_p(), and if not calls the out-of-line version of # mfdcr(). But in this case GCC is smart enough to notice that "base + # PLB4OPB_GESR0" will be constant, even though it's not something we can # immediately stringify into a register number. # # Segher pointed out that passing the register number to the inline asm # as a constant would be better, and in fact it fixes the build error, # presumably because it gives GCC a chance to resolve the value. # # While we're at it, change mtdcr() similarly. # # Reported-by: kernel test robot # Suggested-by: Segher Boessenkool # Signed-off-by: Michael Ellerman # Acked-by: Feng Tang # Link: https://lore.kernel.org/r/20210218123058.748882-1-mpe@ellerman.id.au # < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version # < git log --format=%s --max-count=1 b12483618d73c954c00faa49c276b4d9995fb95a # < make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc44x_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- ppc44x_defconfig # < make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc44x_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- help # make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc44x_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- olddefconfig # make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc44x_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- INFO: Uncompressed kernel (size 0x5ff980) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x5ff980) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x5ff980) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x5ff980) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x5ff980) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x5ff980) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x5ff980) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x5ff980) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x5ff980) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x5ff980) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x5ff980) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) Image Name: Linux-5.11.0-rc2-gb12483618d73 Created: Sun Feb 21 23:32:04 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3058153 Bytes = 2986.48 KiB = 2.92 MiB Load Address: 00600000 Entry Point: 00601534 Image Name: Linux-5.11.0-rc2-gb12483618d73 Created: Sun Feb 21 23:32:04 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3058186 Bytes = 2986.51 KiB = 2.92 MiB Load Address: 00600000 Entry Point: 00601514 Image Name: Linux-5.11.0-rc2-gb12483618d73 Created: Sun Feb 21 23:32:04 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3058101 Bytes = 2986.43 KiB = 2.92 MiB Load Address: 00600000 Entry Point: 006000c4 Image Name: Linux-5.11.0-rc2-gb12483618d73 Created: Sun Feb 21 23:32:04 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3057845 Bytes = 2986.18 KiB = 2.92 MiB Load Address: 00600000 Entry Point: 00601524 Image Name: Linux-5.11.0-rc2-gb12483618d73 Created: Sun Feb 21 23:32:04 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3058309 Bytes = 2986.63 KiB = 2.92 MiB Load Address: 00600000 Entry Point: 0060152c Image Name: Linux-5.11.0-rc2-gb12483618d73 Created: Sun Feb 21 23:32:04 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3057931 Bytes = 2986.26 KiB = 2.92 MiB Load Address: 00600000 Entry Point: 00601534 Image Name: Linux-5.11.0-rc2-gb12483618d73 Created: Sun Feb 21 23:32:04 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3057789 Bytes = 2986.12 KiB = 2.92 MiB Load Address: 00600000 Entry Point: 006001b8 Image Name: Linux-5.11.0-rc2-gb12483618d73 Created: Sun Feb 21 23:32:04 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3057715 Bytes = 2986.05 KiB = 2.92 MiB Load Address: 00600000 Entry Point: 00601534 Image Name: Linux-5.11.0-rc2-gb12483618d73 Created: Sun Feb 21 23:32:04 2021 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3057886 Bytes = 2986.22 KiB = 2.92 MiB Load Address: 00600000 Entry Point: 00601544 Completed OK # rm -rf /kisskb/build/powerpc-next_ppc44x_defconfig_powerpc-gcc5 # Build took: 0:01:13.467407