# 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 48 ARCH=powerpc O=/kisskb/build/powerpc-fixes_85xx_tqm8555_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  85xx/tqm8555_defconfig
# make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-fixes_85xx_tqm8555_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
INFO: Uncompressed kernel (size 0x502e48) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x600000)
INFO: Uncompressed kernel (size 0x4f274c) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x500000)
Image Name:   Linux-5.5.0-rc3-g91a063c95608
Created:      Mon Dec 23 23:20:23 2019
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    2569646 Bytes = 2509.42 KiB = 2.45 MiB
Load Address: 00000000
Entry Point:  00000000
Image Name:   Linux-5.5.0-rc3-g91a063c95608
Created:      Mon Dec 23 23:20:23 2019
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    2599647 Bytes = 2538.72 KiB = 2.48 MiB
Load Address: 00600000
Entry Point:  00600314
Completed OK
# rm -rf /kisskb/build/powerpc-fixes_85xx_tqm8555_defconfig_powerpc-gcc5
# Build took: 0:00:45.332499