# git rev-parse -q --verify aa5e20e2b0e02d87d5883f534189135b677eedb5^{commit}
aa5e20e2b0e02d87d5883f534189135b677eedb5
already have revision, skipping fetch
# git checkout -q -f -B kisskb aa5e20e2b0e02d87d5883f534189135b677eedb5
# git clean -qxdf
# < git log -1
# commit aa5e20e2b0e02d87d5883f534189135b677eedb5
# Author: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
# Date:   Tue Dec 18 15:11:37 2018 +0530
# 
#     arch/powerpc/mm/hugetlb: NestMMU workaround for hugetlb mprotect RW upgrade
#     
#     NestMMU requires us to mark the pte invalid and flush the tlb when we do a
#     RW upgrade of pte. We fixed a variant of this in the fault path in commit
#     Fixes: bd5050e38aec ("powerpc/mm/radix: Change pte relax sequence to handle nest MMU hang")
#     
#     Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
# < /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 aa5e20e2b0e02d87d5883f534189135b677eedb5
# < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_corenet64_smp_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  corenet64_smp_defconfig
# make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_corenet64_smp_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
/kisskb/src/arch/powerpc/kernel/iommu.c: In function 'iommu_tce_xchg':
/kisskb/src/arch/powerpc/kernel/iommu.c:1008:5: error: implicit declaration of function 'mm_iommu_is_devmem' [-Werror=implicit-function-declaration]
    !mm_iommu_is_devmem(mm, *hpa, tbl->it_page_shift,
     ^
cc1: all warnings being treated as errors
make[3]: *** [/kisskb/src/scripts/Makefile.build:293: arch/powerpc/kernel/iommu.o] Error 1
make[3]: *** Waiting for unfinished jobs....
make[2]: *** [/kisskb/src/scripts/Makefile.build:518: arch/powerpc/kernel] Error 2
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [/kisskb/src/Makefile:1060: arch/powerpc] Error 2
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:152: sub-make] Error 2
Command 'make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_corenet64_smp_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/powerpc-next_corenet64_smp_defconfig_powerpc-gcc5
# Build took: 0:00:39.228525