# git rev-parse -q --verify c72f04dc46f466a7574a204bf2e965aa1c5cf277^{commit}
c72f04dc46f466a7574a204bf2e965aa1c5cf277
already have revision, skipping fetch
# git checkout -q -f -B kisskb c72f04dc46f466a7574a204bf2e965aa1c5cf277
# git clean -qxdf
# < git log -1
# commit c72f04dc46f466a7574a204bf2e965aa1c5cf277
# Author: Petr Mladek <pmladek@suse.com>
# Date:   Wed May 27 14:28:44 2020 +0200
# 
#     powerpc/bpf: Enable bpf_probe_read{, str}() on powerpc again
#     
#     The commit 0ebeea8ca8a4d1d453a ("bpf: Restrict bpf_probe_read{, str}()
#     only to archs where they work") caused that bpf_probe_read{, str}()
#     functions were not longer available on architectures where the same
#     logical address might have different content in kernel and user memory
#     mapping. These architectures should use probe_read_{user,kernel}_str
#     helpers.
#     
#     For backward compatibility, the problematic functions are still
#     available on architectures where the user and kernel address spaces
#     are not overlapping. This is defined
#     CONFIG_ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE.
#     
#     At the moment, these backward compatible functions are enabled only on
#     x86_64, arm, and arm64. Let's do it also on powerpc that has the non
#     overlapping address space as well.
#     
#     Fixes: 0ebeea8ca8a4 ("bpf: Restrict bpf_probe_read{, str}() only to archs where they work")
#     Signed-off-by: Petr Mladek <pmladek@suse.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/20200527122844.19524-1-pmladek@suse.com
# < /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 c72f04dc46f466a7574a204bf2e965aa1c5cf277
# < make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-fixes_ppc64le_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  ppc64le_defconfig
# < make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-fixes_ppc64le_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-fixes_ppc64le_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
# make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-fixes_ppc64le_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
/kisskb/src/kernel/trace/ftrace.c: In function 'pid_open':
/kisskb/src/kernel/trace/ftrace.c:7166:6: warning: 'seq_ops' may be used uninitialized in this function [-Wmaybe-uninitialized]
  ret = seq_open(file, seq_ops);
      ^
/kisskb/src/kernel/trace/ftrace.c: In function 'pid_write':
/kisskb/src/kernel/trace/ftrace.c:7244:8: warning: 'filtered_pids' may be used uninitialized in this function [-Wmaybe-uninitialized]
  ret = trace_pid_write(filtered_pids, &pid_list, ubuf, cnt);
        ^
/kisskb/src/kernel/trace/ftrace.c:7261:22: warning: 'other_pids' may be used uninitialized in this function [-Wmaybe-uninitialized]
  } else if (pid_list && !other_pids) {
                      ^
WARNING: modpost: vmlinux.o(.text.unlikely+0x2b0): Section mismatch in reference from the function early_init_mmu() to the function .init.text:radix__early_init_mmu()
The function early_init_mmu() references
the function __init radix__early_init_mmu().
This is often because early_init_mmu lacks a __init 
annotation or the annotation of radix__early_init_mmu is wrong.

WARNING: modpost: vmlinux.o(.text.unlikely+0x2bc): Section mismatch in reference from the function early_init_mmu() to the function .init.text:hash__early_init_mmu()
The function early_init_mmu() references
the function __init hash__early_init_mmu().
This is often because early_init_mmu lacks a __init 
annotation or the annotation of hash__early_init_mmu is wrong.

Completed OK
# rm -rf /kisskb/build/powerpc-fixes_ppc64le_defconfig_powerpc-gcc5
# Build took: 0:02:58.665438