# git rev-parse -q --verify db972a3787d12b1ce9ba7a31ec376d8a79e04c47^{commit}
db972a3787d12b1ce9ba7a31ec376d8a79e04c47
already have revision, skipping fetch
# git checkout -q -f -B kisskb db972a3787d12b1ce9ba7a31ec376d8a79e04c47
# git clean -qxdf
# < git log -1
# commit db972a3787d12b1ce9ba7a31ec376d8a79e04c47
# Author: Christophe Leroy <christophe.leroy@csgroup.eu>
# Date:   Tue Dec 8 05:24:19 2020 +0000
# 
#     powerpc/powermac: Fix low_sleep_handler with CONFIG_VMAP_STACK
#     
#     low_sleep_handler() can't restore the context from standard
#     stack because the stack can hardly be accessed with MMU OFF.
#     
#     Store everything in a global storage area instead of storing
#     a pointer to the stack in that global storage area.
#     
#     To avoid a complete churn of the function, still use r1 as
#     the pointer to the storage area during restore.
#     
#     Fixes: cd08f109e262 ("powerpc/32s: Enable CONFIG_VMAP_STACK")
#     Reported-by: Giuseppe Sacco <giuseppe@sguazz.it>
#     Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
#     Tested-by: Giuseppe Sacco <giuseppe@sguazz.it>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/e3e0d8042a3ba75cb4a9546c19c408b5b5b28994.1607404931.git.christophe.leroy@csgroup.eu
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version
# < git log --format=%s --max-count=1 db972a3787d12b1ce9ba7a31ec376d8a79e04c47
# < make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_85xx_mpc8540_ads_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  85xx/mpc8540_ads_defconfig
# make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_85xx_mpc8540_ads_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  
cc1: fatal error: opening output file arch/powerpc/boot/dts/fsl/.mpc8540ads.dtb.dts.tmp: No such file or directory
compilation terminated.
make[2]: *** [scripts/Makefile.lib:326: arch/powerpc/boot/dts/fsl/mpc8540ads.dtb] Error 1
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [arch/powerpc/Makefile:294: zImage] Error 2
make: *** [Makefile:185: __sub-make] Error 2
Command 'make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_85xx_mpc8540_ads_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/powerpc-next_85xx_mpc8540_ads_defconfig_powerpc-gcc4.9
# Build took: 0:00:26.492174