# git rev-parse -q --verify b9ee5e04fd77898208c51b1395fa0b5e8536f9b6^{commit}
b9ee5e04fd77898208c51b1395fa0b5e8536f9b6
already have revision, skipping fetch
# 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/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-gcc --version
# < /opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-ld --version
# < git log --format=%s --max-count=1 b9ee5e04fd77898208c51b1395fa0b5e8536f9b6
# < make -s -j 48 ARCH=arm64 O=/kisskb/build/powerpc-fixes_arm64-defconfig_arm64-gcc5.4 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-  defconfig
# make -s -j 48 ARCH=arm64 O=/kisskb/build/powerpc-fixes_arm64-defconfig_arm64-gcc5.4 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-  
arch/arm64/Makefile:27: ld does not support --fix-cortex-a53-843419; kernel may be susceptible to erratum
arch/arm64/Makefile:38: LSE atomics not supported by binutils
arch/arm64/Makefile:56: CROSS_COMPILE_COMPAT not defined or empty, the compat vDSO will not be built
/kisskb/src/drivers/i2c/busses/i2c-sh_mobile.c: In function 'sh_mobile_i2c_isr':
/kisskb/src/drivers/i2c/busses/i2c-sh_mobile.c:399:26: warning: 'data' may be used uninitialized in this function [-Wmaybe-uninitialized]
   pd->msg->buf[real_pos] = data;
                          ^
/kisskb/src/drivers/i2c/busses/i2c-sh_mobile.c:372:16: note: 'data' was declared here
  unsigned char data;
                ^
In file included from /kisskb/src/include/linux/rwsem.h:16:0,
                 from /kisskb/src/include/linux/notifier.h:15,
                 from /kisskb/src/include/linux/clk.h:14,
                 from /kisskb/src/drivers/tty/serial/sh-sci.c:24:
/kisskb/src/drivers/tty/serial/sh-sci.c: In function 'sci_dma_rx_submit':
/kisskb/src/include/linux/spinlock.h:288:3: warning: 'flags' may be used uninitialized in this function [-Wmaybe-uninitialized]
   _raw_spin_unlock_irqrestore(lock, flags); \
   ^
/kisskb/src/drivers/tty/serial/sh-sci.c:1353:16: note: 'flags' was declared here
  unsigned long flags;
                ^
Completed OK
# rm -rf /kisskb/build/powerpc-fixes_arm64-defconfig_arm64-gcc5.4
# Build took: 0:04:25.512178