# git rev-parse -q --verify 3e22ed88f973d538104798edfa5140769483bce1^{commit}
3e22ed88f973d538104798edfa5140769483bce1
already have revision, skipping fetch
# git checkout -q -f -B kisskb 3e22ed88f973d538104798edfa5140769483bce1
# git clean -qxdf
# < git log -1
# commit 3e22ed88f973d538104798edfa5140769483bce1
# Author: Nicholas Piggin <npiggin@gmail.com>
# Date:   Wed Jul 25 19:54:28 2018 +1000
# 
#     powerpc/64s: free page table caches at exit_mmap time
#     
#     The kernel page table caches are tied to init_mm, so there is no
#     more need for them after userspace is finished.
#     
#     destroy_context() gets called when we drop the last reference for an
#     mm, which can be much later than the task exit due to other lazy mm
#     references to it. We can free the page table cache pages on task exit
#     because they only cache the userspace page tables and kernel threads
#     should not access user space addresses.
#     
#     The mapping for kernel threads itself is maintained in init_mm and
#     page table cache for that is attached to init_mm.
#     
#     Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
#     Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
#     [mpe: Merge change log additions from Aneesh]
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version
# < git log --format=%s --max-count=1 3e22ed88f973d538104798edfa5140769483bce1
# < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_44x_rainier_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  44x/rainier_defconfig
# make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_44x_rainier_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  
/kisskb/src/net/Makefile:24: CC cannot link executables. Skipping bpfilter.
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:183:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/Makefile:24: CC cannot link executables. Skipping bpfilter.
/kisskb/src/fs/proc/inode.c: In function 'proc_reg_open':
/kisskb/src/include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/proc/inode.c:339:21: note: 'pdeo' was declared here
/kisskb/src/drivers/tty/serial/8250/8250_core.c: In function 'univ8250_release_irq':
/kisskb/src/drivers/tty/serial/8250/8250_core.c:251:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/tty/serial/8250/8250_core.c:231:19: note: 'i' was declared here
INFO: Uncompressed kernel (size 0x45d744) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x500000)
Image Name:   Linux-4.18.0-rc3-g3e22ed88
Created:      Tue Jul 31 23:15:43 2018
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    2204091 Bytes = 2152.43 kB = 2.10 MB
Load Address: 00500000
Entry Point:  0050110c
Completed OK
# rm -rf /kisskb/build/powerpc-next_44x_rainier_defconfig_powerpc
# Build took: 0:00:36.670698