# git rev-parse -q --verify 2e839bed5f405e0d184bb6041df48270e8846033^{commit}
2e839bed5f405e0d184bb6041df48270e8846033
already have revision, skipping fetch
# git checkout -q -f -B kisskb 2e839bed5f405e0d184bb6041df48270e8846033
# git clean -qxdf
# < git log -1
# commit 2e839bed5f405e0d184bb6041df48270e8846033
# Author: Michael Ellerman <mpe@ellerman.id.au>
# Date:   Sun Oct 13 21:23:51 2019 +1100
# 
#     powerpc/pseries: Mark accumulate_stolen_time() as notrace
#     
#     accumulate_stolen_time() is called prior to interrupt state being
#     reconciled, which can trip the warning in arch_local_irq_restore():
#     
#       WARNING: CPU: 5 PID: 1017 at arch/powerpc/kernel/irq.c:258 .arch_local_irq_restore+0x9c/0x130
#       ...
#       NIP .arch_local_irq_restore+0x9c/0x130
#       LR  .rb_start_commit+0x38/0x80
#       Call Trace:
#         .ring_buffer_lock_reserve+0xe4/0x620
#         .trace_function+0x44/0x210
#         .function_trace_call+0x148/0x170
#         .ftrace_ops_no_ops+0x180/0x1d0
#         ftrace_call+0x4/0x8
#         .accumulate_stolen_time+0x1c/0xb0
#         decrementer_common+0x124/0x160
#     
#     For now just mark it as notrace. We may change the ordering to call it
#     after interrupt state has been reconciled, but that is a larger
#     change.
#     
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/20191024055932.27940-1-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 2e839bed5f405e0d184bb6041df48270e8846033
# < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc64le_defconfig+NO_KVM_ppc64le-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  ppc64le_defconfig
# Added to kconfig CONFIG_KVM_BOOK3S_64=n
# Added to kconfig CONFIG_KVM=n
# yes \n | make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc64le_defconfig+NO_KVM_ppc64le-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  oldconfig
yes: standard output: Broken pipe
# make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc64le_defconfig+NO_KVM_ppc64le-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
In file included from /kisskb/src/include/linux/list.h:9:0,
                 from /kisskb/src/include/linux/wait.h:7,
                 from /kisskb/src/include/linux/wait_bit.h:8,
                 from /kisskb/src/include/linux/fs.h:6,
                 from /kisskb/src/fs/btrfs/send.c:7:
/kisskb/src/fs/btrfs/send.c: In function 'process_extent':
/kisskb/src/include/linux/kernel.h:37:33: warning: 'clone_src_i_size' may be used uninitialized in this function [-Wmaybe-uninitialized]
 #define IS_ALIGNED(x, a)  (((x) & ((typeof(x))(a) - 1)) == 0)
                                 ^
/kisskb/src/fs/btrfs/send.c:5088:6: note: 'clone_src_i_size' was declared here
  u64 clone_src_i_size;
      ^
WARNING: vmlinux.o(.text+0x31d4): Section mismatch in reference from the variable __boot_from_prom to the function .init.text:prom_init()
The function __boot_from_prom() references
the function __init prom_init().
This is often because __boot_from_prom lacks a __init 
annotation or the annotation of prom_init is wrong.

WARNING: vmlinux.o(.text+0x33c8): Section mismatch in reference from the variable start_here_common to the function .init.text:start_kernel()
The function start_here_common() references
the function __init start_kernel().
This is often because start_here_common lacks a __init 
annotation or the annotation of start_kernel is wrong.

Completed OK
# rm -rf /kisskb/build/powerpc-next_ppc64le_defconfig+NO_KVM_ppc64le-gcc5
# Build took: 0:02:56.269877