# git rev-parse -q --verify 91a063c956084fb21cf2523bce6892514e3f1799^{commit}
91a063c956084fb21cf2523bce6892514e3f1799
already have revision, skipping fetch
# git checkout -q -f -B kisskb 91a063c956084fb21cf2523bce6892514e3f1799
# git clean -qxdf
# < git log -1
# commit 91a063c956084fb21cf2523bce6892514e3f1799
# Author: Michael Ellerman <mpe@ellerman.id.au>
# Date:   Sat Dec 21 14:16:54 2019 +1100
# 
#     powerpc/mm: Mark get_slice_psize() & slice_addr_is_low() as notrace
#     
#     These slice routines are called from the SLB miss handler, which can
#     lead to warnings from the IRQ code, because we have not reconciled the
#     IRQ state properly:
#     
#       WARNING: CPU: 72 PID: 30150 at arch/powerpc/kernel/irq.c:258 arch_local_irq_restore.part.0+0xcc/0x100
#       Modules linked in:
#       CPU: 72 PID: 30150 Comm: ftracetest Not tainted 5.5.0-rc2-gcc9x-g7e0165b2f1a9 #1
#       NIP:  c00000000001d83c LR: c00000000029ab90 CTR: c00000000026cf90
#       REGS: c0000007eee3b960 TRAP: 0700   Not tainted  (5.5.0-rc2-gcc9x-g7e0165b2f1a9)
#       MSR:  8000000000021033 <SF,ME,IR,DR,RI,LE>  CR: 22242844  XER: 20000000
#       CFAR: c00000000001d780 IRQMASK: 0
#       ...
#       NIP arch_local_irq_restore.part.0+0xcc/0x100
#       LR  trace_graph_entry+0x270/0x340
#       Call Trace:
#         trace_graph_entry+0x254/0x340 (unreliable)
#         function_graph_enter+0xe4/0x1a0
#         prepare_ftrace_return+0xa0/0x130
#         ftrace_graph_caller+0x44/0x94       # (get_slice_psize())
#         slb_allocate_user+0x7c/0x100
#         do_slb_fault+0xf8/0x300
#         instruction_access_slb_common+0x140/0x180
#     
#     Fixes: 48e7b7695745 ("powerpc/64s/hash: Convert SLB miss handlers to C")
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/20191221121337.4894-1-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 91a063c956084fb21cf2523bce6892514e3f1799
# < make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_ppc64e_defconfig+KEXEC_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  ppc64e_defconfig
# Added to kconfig CONFIG_KEXEC=y
# yes \n | make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_ppc64e_defconfig+KEXEC_powerpc-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 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_ppc64e_defconfig+KEXEC_powerpc-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/fs_enet_pd.h:21:0,
                 from /kisskb/src/arch/powerpc/sysdev/fsl_soc.c:26:
/kisskb/src/include/linux/of_mdio.h:58:13: error: 'of_mdiobus_child_is_phy' defined but not used [-Werror=unused-function]
 static bool of_mdiobus_child_is_phy(struct device_node *child)
             ^
cc1: all warnings being treated as errors
make[3]: *** [/kisskb/src/scripts/Makefile.build:265: arch/powerpc/sysdev/fsl_soc.o] Error 1
make[3]: *** Waiting for unfinished jobs....
make[2]: *** [/kisskb/src/scripts/Makefile.build:503: arch/powerpc/sysdev] Error 2
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [/kisskb/src/Makefile:1693: arch/powerpc] Error 2
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:179: sub-make] Error 2
Command 'make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_ppc64e_defconfig+KEXEC_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/powerpc-fixes_ppc64e_defconfig+KEXEC_powerpc-gcc5
# Build took: 0:01:01.831761