# git rev-parse -q --verify d799769188529abc6cbf035a10087a51f7832b6b^{commit} d799769188529abc6cbf035a10087a51f7832b6b already have revision, skipping fetch # git checkout -q -f -B kisskb d799769188529abc6cbf035a10087a51f7832b6b # git clean -qxdf # < git log -1 # commit d799769188529abc6cbf035a10087a51f7832b6b # Author: Alexey Kardashevskiy # Date: Wed Mar 9 17:18:22 2022 +1100 # # powerpc/64: Add UADDR64 relocation support # # When ld detects unaligned relocations, it emits R_PPC64_UADDR64 # relocations instead of R_PPC64_RELATIVE. Currently R_PPC64_UADDR64 are # detected by arch/powerpc/tools/relocs_check.sh and expected not to work. # Below is a simple chunk to trigger this behaviour (this disables # optimization for the demonstration purposes only, this also happens with # -O1/-O2 when CONFIG_PRINTK_INDEX=y, for example): # # \#pragma GCC push_options # \#pragma GCC optimize ("O0") # struct entry { # const char *file; # int line; # } __attribute__((packed)); # static const struct entry e1 = { .file = __FILE__, .line = __LINE__ }; # static const struct entry e2 = { .file = __FILE__, .line = __LINE__ }; # ... # prom_printf("e1=%s %lx %lx\n", e1.file, (unsigned long) e1.file, mfmsr()); # prom_printf("e2=%s %lx\n", e2.file, (unsigned long) e2.file); # \#pragma GCC pop_options # # This adds support for UADDR64 for 64bit. This reuses __dynamic_symtab # from the 32bit code which supports more relocation types already. # # Because RELACOUNT includes only R_PPC64_RELATIVE, this replaces it with # RELASZ which is the size of all relocation records. # # Signed-off-by: Alexey Kardashevskiy # Signed-off-by: Michael Ellerman # Link: https://lore.kernel.org/r/20220309061822.168173-1-aik@ozlabs.ru # < /opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version # < git log --format=%s --max-count=1 d799769188529abc6cbf035a10087a51f7832b6b # < make -s -j 10 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc85xx_defconfig+KVM_powerpc-gcc9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux- mpc85xx_defconfig # Added to kconfig CONFIG_PPC_E500MC=y # Added to kconfig CONFIG_VIRTUALIZATION=y # Added to kconfig CONFIG_KVM_E500MC=y # Added to kconfig # < make -s -j 10 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc85xx_defconfig+KVM_powerpc-gcc9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux- help # make -s -j 10 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc85xx_defconfig+KVM_powerpc-gcc9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux- olddefconfig .config:4324:warning: override: reassigning to symbol PPC_E500MC .config:4325:warning: override: reassigning to symbol VIRTUALIZATION # make -s -j 10 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc85xx_defconfig+KVM_powerpc-gcc9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux- In file included from /kisskb/src/include/linux/bitops.h:33, from /kisskb/src/include/linux/kernel.h:22, from /kisskb/src/include/linux/cpumask.h:10, from /kisskb/src/include/linux/smp.h:13, from /kisskb/src/include/linux/lockdep.h:14, from /kisskb/src/include/linux/mutex.h:17, from /kisskb/src/arch/powerpc/include/asm/kvm_ppc.h:15, from /kisskb/src/arch/powerpc/kvm/e500_emulate.c:12: /kisskb/src/arch/powerpc/include/asm/bitops.h: In function 'kvmppc_core_emulate_op_e500': /kisskb/src/arch/powerpc/include/asm/bitops.h:104:3: error: asm operand 2 probably doesn't match constraints [-Werror] 104 | asm volatile ( \ | ^~~ /kisskb/src/arch/powerpc/include/asm/bitops.h:126:1: note: in expansion of macro 'DEFINE_CLROP' 126 | DEFINE_CLROP(clear_bits, "") | ^~~~~~~~~~~~ /kisskb/src/arch/powerpc/include/asm/bitops.h:104:3: error: impossible constraint in 'asm' 104 | asm volatile ( \ | ^~~ /kisskb/src/arch/powerpc/include/asm/bitops.h:126:1: note: in expansion of macro 'DEFINE_CLROP' 126 | DEFINE_CLROP(clear_bits, "") | ^~~~~~~~~~~~ cc1: all warnings being treated as errors make[3]: *** [/kisskb/src/scripts/Makefile.build:288: arch/powerpc/kvm/e500_emulate.o] Error 1 make[2]: *** [/kisskb/src/scripts/Makefile.build:550: arch/powerpc/kvm] Error 2 make[2]: *** Waiting for unfinished jobs.... make[1]: *** [/kisskb/src/Makefile:1831: arch/powerpc] Error 2 make[1]: *** Waiting for unfinished jobs.... make: *** [Makefile:219: __sub-make] Error 2 Command 'make -s -j 10 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc85xx_defconfig+KVM_powerpc-gcc9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux- ' returned non-zero exit status 2 # rm -rf /kisskb/build/powerpc-next_mpc85xx_defconfig+KVM_powerpc-gcc9 # Build took: 0:02:46.661131