# git rev-parse -q --verify 031d94b0f4799478367ec10babdd755123142ed6^{commit}
031d94b0f4799478367ec10babdd755123142ed6
already have revision, skipping fetch
# git checkout -q -f -B kisskb 031d94b0f4799478367ec10babdd755123142ed6
# git clean -qxdf
# < git log -1
# commit 031d94b0f4799478367ec10babdd755123142ed6
# Author: Christophe Leroy <christophe.leroy@c-s.fr>
# Date:   Fri Jan 24 07:07:54 2020 +0000
# 
#     powerpc/irq: Use current_stack_pointer in do_IRQ()
#     
#     Until commit 7306e83ccf5c ("powerpc: Don't use CURRENT_THREAD_INFO to
#     find the stack"), the current stack base address was obtained by
#     calling current_thread_info(). That inline function was simply masking
#     out the value of r1.
#     
#     In that commit, it was changed to using current_stack_pointer() (since
#     renamed current_stack_frame()), which is a heavier function as it is
#     an outline assembly function which cannot be inlined and which reads
#     the content of the stack at 0(r1).
#     
#     Convert to using current_stack_pointer for geting r1 and masking out
#     its value to obtain the base address of the stack pointer as before.
#     
#     Fixes: 7306e83ccf5c ("powerpc: Don't use CURRENT_THREAD_INFO to find the stack")
#     Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/a37e699e7ab897742c07b6838a08af33bc9217e3.1579849665.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 031d94b0f4799478367ec10babdd755123142ed6
# < make -s -j 24 ARCH=arm64 O=/kisskb/build/powerpc-next_arm64-defconfig_arm64-gcc5.4 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-  defconfig
# make -s -j 24 ARCH=arm64 O=/kisskb/build/powerpc-next_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:35: LSE atomics not supported by binutils
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:20:
/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:1348:16: note: 'flags' was declared here
  unsigned long flags;
                ^
/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;
                ^
Completed OK
# rm -rf /kisskb/build/powerpc-next_arm64-defconfig_arm64-gcc5.4
# Build took: 0:05:58.120284