# git rev-parse -q --verify bb845a8ed3c69eee961e8d5b2d86f6e2a7e83c6a^{commit}
bb845a8ed3c69eee961e8d5b2d86f6e2a7e83c6a
already have revision, skipping fetch
# git checkout -q -f -B kisskb bb845a8ed3c69eee961e8d5b2d86f6e2a7e83c6a
# git clean -qxdf
# < git log -1
# commit bb845a8ed3c69eee961e8d5b2d86f6e2a7e83c6a
# Author: Mauricio Faria de Oliveira <mauricfo@linux.vnet.ibm.com>
# Date:   Fri Mar 9 17:45:58 2018 -0300
# 
#     powerpc/mm: Fix section mismatch warning in stop_machine_change_mapping()
#     
#     Fix the warning messages for stop_machine_change_mapping(), and a number
#     of other affected functions in its call chain.
#     
#     All modified functions are under CONFIG_MEMORY_HOTPLUG, so __meminit
#     is okay (keeps them / does not discard them).
#     
#     Boot-tested on powernv/power9/radix-mmu and pseries/power8/hash-mmu.
#     
#         $ make -j$(nproc) CONFIG_DEBUG_SECTION_MISMATCH=y vmlinux
#         ...
#           MODPOST vmlinux.o
#         WARNING: vmlinux.o(.text+0x6b130): Section mismatch in reference from the function stop_machine_change_mapping() to the function .meminit.text:create_physical_mapping()
#         The function stop_machine_change_mapping() references
#         the function __meminit create_physical_mapping().
#         This is often because stop_machine_change_mapping lacks a __meminit
#         annotation or the annotation of create_physical_mapping is wrong.
#     
#         WARNING: vmlinux.o(.text+0x6b13c): Section mismatch in reference from the function stop_machine_change_mapping() to the function .meminit.text:create_physical_mapping()
#         The function stop_machine_change_mapping() references
#         the function __meminit create_physical_mapping().
#         This is often because stop_machine_change_mapping lacks a __meminit
#         annotation or the annotation of create_physical_mapping is wrong.
#         ...
#     
#     Signed-off-by: Mauricio Faria de Oliveira <mauricfo@linux.vnet.ibm.com>
#     Acked-by: Balbir Singh <bsingharora@gmail.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version
# < git log --format=%s --max-count=1 bb845a8ed3c69eee961e8d5b2d86f6e2a7e83c6a
# < make -s -j 48 ARCH=x86 O=/kisskb/build/powerpc-next_x86_64_defconfig_x86_64 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-  x86_64_defconfig
# make -s -j 48 ARCH=x86 O=/kisskb/build/powerpc-next_x86_64_defconfig_x86_64 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-  
/kisskb/src/arch/x86/kernel/e820.c: In function 'e820__setup_pci_gap':
/kisskb/src/arch/x86/kernel/e820.c:652:2: warning: 'gapstart' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:183:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/mm/vmstat.c: In function 'sysctl_vm_numa_stat_handler':
/kisskb/src/mm/vmstat.c:89:5: warning: 'oldval' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/arch/x86/kernel/apic/io_apic.c: In function 'mp_map_pin_to_irq':
/kisskb/src/arch/x86/kernel/apic/io_apic.c:1033:6: warning: 'irq' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/sound/hda/hdac_regmap.c: In function 'hda_reg_write':
/kisskb/src/sound/hda/hdac_regmap.c:282:16: warning: 'err' may be used uninitialized in this function [-Wuninitialized]
kernel/rcu/tree.o: warning: objtool: rcu_init()+0x1c5: unreachable instruction
/kisskb/src/kernel/cgroup/cgroup-v1.c: In function 'cgroup1_mount':
/kisskb/src/kernel/cgroup/cgroup-v1.c:1268:20: warning: 'root' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/mm/hugetlb.c: In function 'alloc_pool_huge_page':
/kisskb/src/mm/hugetlb.c:1439:5: warning: 'page' may be used uninitialized in this function [-Wuninitialized]
kernel/trace/trace.o: warning: objtool: tracing_start()+0x6f: unreachable instruction
fs/aio.o: warning: objtool: aio_nr_sub()+0x2d: unreachable instruction
drivers/clk/clk.o: warning: objtool: clk_prepare_unlock()+0x44: unreachable instruction
/kisskb/src/drivers/dma-buf/reservation.c: In function 'reservation_object_add_shared_fence':
/kisskb/src/drivers/dma-buf/reservation.c:207:2: warning: 'k' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/dma-buf/reservation.c:160:17: note: 'k' was declared here
/kisskb/src/net/mac80211/mlme.c: In function 'ieee80211_rx_mgmt_beacon':
/kisskb/src/net/mac80211/mlme.c:1350:3: warning: 'pwr_level_cisco' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/mac80211/mlme.c:1307:6: note: 'pwr_level_cisco' was declared here
Completed OK
# rm -rf /kisskb/build/powerpc-next_x86_64_defconfig_x86_64
# Build took: 0:01:22.377973