# git rev-parse -q --verify af3d0a68698c7e5df8b72267086b23422a3954bb^{commit}
# git fetch -q -n -f git://gitlab.ozlabs.ibm.com/linuxppc/linux.git fixes-test
# git rev-parse -q --verify af3d0a68698c7e5df8b72267086b23422a3954bb^{commit}
af3d0a68698c7e5df8b72267086b23422a3954bb
# git checkout -q -f -B kisskb af3d0a68698c7e5df8b72267086b23422a3954bb
# git clean -qxdf
# < git log -1
# commit af3d0a68698c7e5df8b72267086b23422a3954bb
# Author: Christophe Leroy <christophe.leroy@c-s.fr>
# Date:   Fri Mar 6 16:49:49 2020 +0000
# 
#     powerpc/kasan: Fix shadow memory protection with CONFIG_KASAN_VMALLOC
#     
#     With CONFIG_KASAN_VMALLOC, new page tables are created at the time
#     shadow memory for vmalloc area is unmapped. If some parts of the
#     page table still have entries to the zero page shadow memory, the
#     entries are wrongly marked RW.
#     
#     With CONFIG_KASAN_VMALLOC, almost the entire kernel address space
#     is managed by KASAN. To make it simple, just create KASAN page tables
#     for the entire kernel space at kasan_init(). That doesn't use much
#     more space, and that's anyway already done for hash platforms.
#     
#     Fixes: 3d4247fcc938 ("powerpc/32: Add support of KASAN_VMALLOC")
#     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/ef5248fc1f496c6b0dfdb59380f24968f25f75c5.1583513368.git.christophe.leroy@c-s.fr
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-ld --version
# < git log --format=%s --max-count=1 af3d0a68698c7e5df8b72267086b23422a3954bb
# < make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_powerpc-allnoconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  allnoconfig
# < make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_powerpc-allnoconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  help
# make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_powerpc-allnoconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  olddefconfig
# make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_powerpc-allnoconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:204:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
Completed OK
# rm -rf /kisskb/build/powerpc-fixes_powerpc-allnoconfig_powerpc-gcc4.6
# Build took: 0:00:34.668128