# git rev-parse -q --verify b9ee5e04fd77898208c51b1395fa0b5e8536f9b6^{commit}
# git fetch -q -n -f git://gitlab.ozlabs.ibm.com/linuxppc/linux.git fixes-test
# git rev-parse -q --verify b9ee5e04fd77898208c51b1395fa0b5e8536f9b6^{commit}
b9ee5e04fd77898208c51b1395fa0b5e8536f9b6
# git checkout -q -f -B kisskb b9ee5e04fd77898208c51b1395fa0b5e8536f9b6
# git clean -qxdf
# < git log -1
# commit b9ee5e04fd77898208c51b1395fa0b5e8536f9b6
# Author: Christophe Leroy <christophe.leroy@c-s.fr>
# Date:   Thu Aug 8 12:48:26 2019 +0000
# 
#     powerpc/64e: Drop stale call to smp_processor_id() which hangs SMP startup
#     
#     Commit ebb9d30a6a74 ("powerpc/mm: any thread in one core can be the
#     first to setup TLB1") removed the need to know the cpu_id in
#     early_init_this_mmu(), but the call to smp_processor_id() which was
#     marked __maybe_used remained.
#     
#     Since commit ed1cd6deb013 ("powerpc: Activate CONFIG_THREAD_INFO_IN_TASK")
#     thread_info cannot be reached before MMU is properly set up.
#     
#     Drop this stale call to smp_processor_id() which makes SMP hang when
#     CONFIG_PREEMPT is set.
#     
#     Fixes: ebb9d30a6a74 ("powerpc/mm: any thread in one core can be the first to setup TLB1")
#     Fixes: ed1cd6deb013 ("powerpc: Activate CONFIG_THREAD_INFO_IN_TASK")
#     Cc: stable@vger.kernel.org # v5.1+
#     Reported-by: Chris Packham <Chris.Packham@alliedtelesis.co.nz>
#     Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
#     Tested-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/bef479514f4c08329fa649f67735df8918bc0976.1565268248.git.christophe.leroy@c-s.fr
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/ia64-linux/bin/ia64-linux-gcc --version
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/ia64-linux/bin/ia64-linux-ld --version
# < git log --format=%s --max-count=1 b9ee5e04fd77898208c51b1395fa0b5e8536f9b6
# < make -s -j 80 ARCH=ia64 O=/kisskb/build/powerpc-fixes_ia64-defconfig_ia64 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/ia64-linux/bin/ia64-linux-  defconfig
# make -s -j 80 ARCH=ia64 O=/kisskb/build/powerpc-fixes_ia64-defconfig_ia64 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/ia64-linux/bin/ia64-linux-  
<stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp]
/kisskb/src/kernel/fork.c:771:13: warning: 'task_struct_whitelist' defined but not used [-Wunused-function]
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:194:16: 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:90:5: warning: 'oldval' 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:338:21: note: 'pdeo' was declared here
/kisskb/src/fs/nfsd/nfs4xdr.c: In function 'nfsd4_encode_components_esc':
/kisskb/src/fs/nfsd/nfs4xdr.c:2065:9: warning: 'str' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/mm/hugetlb.c: In function 'alloc_pool_huge_page':
/kisskb/src/mm/hugetlb.c:1465:5: warning: 'page' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/udf/unicode.c: In function 'udf_name_conv_char':
/kisskb/src/fs/udf/unicode.c:132:8: warning: 'c' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/usb/core/devio.c: In function 'async_completed':
/kisskb/src/drivers/usb/core/devio.c:613:23: warning: 'errno' may be used uninitialized in this function [-Wuninitialized]
No errors detected in 21595 functions.
  Kernel: vmlinux.gz is ready
Completed OK
# rm -rf /kisskb/build/powerpc-fixes_ia64-defconfig_ia64
# Build took: 0:02:04.511707