# git rev-parse -q --verify 4b058c9f281f5b100efbf665dd5a1a05e1654d6d^{commit}
4b058c9f281f5b100efbf665dd5a1a05e1654d6d
already have revision, skipping fetch
# git checkout -q -f -B kisskb 4b058c9f281f5b100efbf665dd5a1a05e1654d6d
# git clean -qxdf
# < git log -1
# commit 4b058c9f281f5b100efbf665dd5a1a05e1654d6d
# Author: Jason A. Donenfeld <Jason@zx2c4.com>
# Date:   Wed Sep 25 19:50:22 2024 +0200
# 
#     powerpc/vdso: allow r30 in vDSO code generation of getrandom
#     
#     For gettimeofday, -ffixed-r30 was passed to work around a bug in Go
#     code, where the vDSO trampoline forgot to save and restore this register
#     across function calls. But Go requires a different trampoline for every
#     call, and there's no reason that new Go code needs to be broken and add
#     more bugs. So remove -ffixed-r30 for getrandom.
#     
#     Fixes: 8072b39c3a75 ("powerpc/vdso: Wire up getrandom() vDSO implementation on VDSO64")
#     Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://msgid.link/20240925175021.1526936-2-Jason@zx2c4.com
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/sparc64-linux/bin/sparc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/sparc64-linux/bin/sparc64-linux-ld --version
# < git log --format=%s --max-count=1 4b058c9f281f5b100efbf665dd5a1a05e1654d6d
# make -s -j 40 ARCH=sparc64 O=/kisskb/build/powerpc-fixes_defconfig_sparc64-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/sparc64-linux/bin/sparc64-linux-  defconfig
# < make -s -j 40 ARCH=sparc64 O=/kisskb/build/powerpc-fixes_defconfig_sparc64-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/sparc64-linux/bin/sparc64-linux-  help
# make -s -j 40 ARCH=sparc64 O=/kisskb/build/powerpc-fixes_defconfig_sparc64-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/sparc64-linux/bin/sparc64-linux-  olddefconfig
# make -s -j 40 ARCH=sparc64 O=/kisskb/build/powerpc-fixes_defconfig_sparc64-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/sparc64-linux/bin/sparc64-linux-  
<stdin>:1519:2: warning: #warning syscall clone3 not implemented [-Wcpp]
cc1: warning: unrecognized command line option '-Wno-shift-negative-value'
cc1: warning: unrecognized command line option '-Wno-stringop-overflow'
/kisskb/src/arch/sparc/vdso/vclock_gettime.c:254:1: warning: no previous prototype for '__vdso_clock_gettime' [-Wmissing-prototypes]
 __vdso_clock_gettime(clockid_t clock, struct __kernel_old_timespec *ts)
 ^
/kisskb/src/arch/sparc/vdso/vclock_gettime.c:282:1: warning: no previous prototype for '__vdso_clock_gettime_stick' [-Wmissing-prototypes]
 __vdso_clock_gettime_stick(clockid_t clock, struct __kernel_old_timespec *ts)
 ^
/kisskb/src/arch/sparc/vdso/vclock_gettime.c:307:1: warning: no previous prototype for '__vdso_gettimeofday' [-Wmissing-prototypes]
 __vdso_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz)
 ^
/kisskb/src/arch/sparc/vdso/vclock_gettime.c:343:1: warning: no previous prototype for '__vdso_gettimeofday_stick' [-Wmissing-prototypes]
 __vdso_gettimeofday_stick(struct __kernel_old_timeval *tv, struct timezone *tz)
 ^
cc1: warning: unrecognized command line option '-Wno-shift-negative-value'
cc1: warning: unrecognized command line option '-Wno-stringop-overflow'
In file included from /kisskb/src/arch/sparc/vdso/vdso32/vclock_gettime.c:22:0:
/kisskb/src/arch/sparc/vdso/vdso32/../vclock_gettime.c:254:1: warning: no previous prototype for '__vdso_clock_gettime' [-Wmissing-prototypes]
 __vdso_clock_gettime(clockid_t clock, struct __kernel_old_timespec *ts)
 ^
/kisskb/src/arch/sparc/vdso/vdso32/../vclock_gettime.c:282:1: warning: no previous prototype for '__vdso_clock_gettime_stick' [-Wmissing-prototypes]
 __vdso_clock_gettime_stick(clockid_t clock, struct __kernel_old_timespec *ts)
 ^
/kisskb/src/arch/sparc/vdso/vdso32/../vclock_gettime.c:307:1: warning: no previous prototype for '__vdso_gettimeofday' [-Wmissing-prototypes]
 __vdso_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz)
 ^
/kisskb/src/arch/sparc/vdso/vdso32/../vclock_gettime.c:343:1: warning: no previous prototype for '__vdso_gettimeofday_stick' [-Wmissing-prototypes]
 __vdso_gettimeofday_stick(struct __kernel_old_timeval *tv, struct timezone *tz)
 ^
cc1: warning: unrecognized command line option '-Wno-shift-negative-value'
cc1: warning: unrecognized command line option '-Wno-stringop-overflow'
/kisskb/src/kernel/fork.c: In function '__do_sys_clone3':
/kisskb/src/kernel/fork.c:3078:2: warning: #warning clone3() entry point is missing, please fix [-Wcpp]
 #warning clone3() entry point is missing, please fix
  ^
/kisskb/src/kernel/fork.c: At top level:
cc1: warning: unrecognized command line option '-Wno-shift-negative-value'
cc1: warning: unrecognized command line option '-Wno-stringop-overflow'
/kisskb/src/kernel/fork.c:3078:2: warning: #warning clone3() entry point is missing, please fix [-Wcpp]
 #warning clone3() entry point is missing, please fix
  ^
cc1: warning: unrecognized command line option '-Wno-shift-negative-value'
cc1: warning: unrecognized command line option '-Wno-stringop-overflow'
WARNING: modpost: EXPORT symbol "_mcount" [vmlinux] version generation failed, symbol will not be versioned.
Is "_mcount" prototyped in <asm/asm-prototypes.h>?
Completed OK
# rm -rf /kisskb/build/powerpc-fixes_defconfig_sparc64-gcc5
# Build took: 0:00:46.423850