# 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/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version
# < git log --format=%s --max-count=1 031d94b0f4799478367ec10babdd755123142ed6
# < make -s -j 32 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc8272_ads_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  mpc8272_ads_defconfig
# make -s -j 32 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc8272_ads_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
/kisskb/src/arch/powerpc/kernel/head_32.S: Assembler messages:
/kisskb/src/arch/powerpc/kernel/head_32.S:946: Warning: invalid register expression
INFO: Uncompressed kernel (size 0x5a3df0) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x600000)
INFO: Uncompressed kernel (size 0x5937dc) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x600000)
Image Name:   Linux-5.6.0-rc2-g031d94b0f479
Created:      Fri Feb 21 00:05:02 2020
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    2900466 Bytes = 2832.49 KiB = 2.77 MiB
Load Address: 00000000
Entry Point:  00000000
Image Name:   Linux-5.6.0-rc2-g031d94b0f479
Created:      Fri Feb 21 00:05:02 2020
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    2930805 Bytes = 2862.11 KiB = 2.80 MiB
Load Address: 00600000
Entry Point:  00600894
Completed OK
# rm -rf /kisskb/build/powerpc-next_mpc8272_ads_defconfig_powerpc-gcc5
# Build took: 0:01:03.438166