# git rev-parse -q --verify 7acf50e4efa60270edcb95107f660f5e258a90f2^{commit}
7acf50e4efa60270edcb95107f660f5e258a90f2
already have revision, skipping fetch
# git checkout -q -f -B kisskb 7acf50e4efa60270edcb95107f660f5e258a90f2
# git clean -qxdf
# < git log -1
# commit 7acf50e4efa60270edcb95107f660f5e258a90f2
# Author: Balbir Singh <bsingharora@gmail.com>
# Date:   Tue May 1 12:57:25 2018 +1000
# 
#     Revert "powerpc/powernv: Increase memory block size to 1GB on radix"
#     
#     This commit was a stop-gap to prevent crashes on hotunplug, caused by
#     the mismatch between the 1G mappings used for the linear mapping and the
#     memory block size. Those issues are now resolved because we split the
#     linear mapping at hotunplug time if necessary, as implemented in commit
#     4dd5f8a99e79 ("powerpc/mm/radix: Split linear mapping on hot-unplug").
#     
#     Signed-off-by: Balbir Singh <bsingharora@gmail.com>
#     Signed-off-by: Michael Neuling <mikey@neuling.org>
#     Tested-by: Rashmica Gupta <rashmica.g@gmail.com>
#     Tested-by: Balbir Singh <bsingharora@gmail.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-gcc --version
# < git log --format=%s --max-count=1 7acf50e4efa60270edcb95107f660f5e258a90f2
# < make -s -j 120 ARCH=s390 O=/kisskb/build/powerpc-next_s390-defconfig_s390x CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-  defconfig
# make -s -j 120 ARCH=s390 O=/kisskb/build/powerpc-next_s390-defconfig_s390x CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-  
/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/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/fs/proc/inode.c: In function 'proc_reg_open':
/kisskb/src/include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/proc/inode.c:340:21: note: 'pdeo' was declared here
/kisskb/src/drivers/net/tun.c: In function 'tun_get_user':
/kisskb/src/drivers/net/tun.c:1822:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/tun.c:1732:46: warning: 'linear' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/mm/hugetlb.c: In function 'alloc_pool_huge_page':
/kisskb/src/mm/hugetlb.c:1433:5: warning: 'page' may be used uninitialized in this function [-Wuninitialized]
Completed OK
# rm -rf /kisskb/build/powerpc-next_s390-defconfig_s390x
# Build took: 0:01:23.366622