# git rev-parse -q --verify e13e7cd4c0c1cc9984d9b6a8663e10d76b53f2aa^{commit}
e13e7cd4c0c1cc9984d9b6a8663e10d76b53f2aa
already have revision, skipping fetch
# git checkout -q -f -B kisskb e13e7cd4c0c1cc9984d9b6a8663e10d76b53f2aa
# git clean -qxdf
# < git log -1
# commit e13e7cd4c0c1cc9984d9b6a8663e10d76b53f2aa
# Author: Nicholas Piggin <npiggin@gmail.com>
# Date:   Sat Jun 22 08:55:54 2019 +1000
# 
#     powerpc/64s/exception: Fix machine check early corrupting AMR
#     
#     The early machine check runs in real mode, so locking is unnecessary.
#     Worse, the windup does not restore AMR, so this can result in a false
#     KUAP fault after a recoverable machine check hits inside a user copy
#     operation.
#     
#     Fix this similarly to HMI by just avoiding the kuap lock in the
#     early machine check handler (it will be set by the late handler that
#     runs in virtual mode if that runs). If the virtual mode handler is
#     reached, it will lock and restore the AMR.
#     
#     Fixes: 890274c2dc4c0 ("powerpc/64s: Implement KUAP for Radix MMU")
#     Cc: Russell Currey <ruscur@russell.cc>
#     Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
# < /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 e13e7cd4c0c1cc9984d9b6a8663e10d76b53f2aa
# < make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-fixes_44x_rainier_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  44x/rainier_defconfig
# make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-fixes_44x_rainier_defconfig_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:194:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
/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:331:21: 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:247:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/tty/serial/8250/8250_core.c:227:19: note: 'i' was declared here
INFO: Uncompressed kernel (size 0x49f6ac) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x500000)
Image Name:   Linux-5.2.0-rc2-ge13e7cd4c0c1
Created:      Tue Jun 25 23:53:07 2019
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    2344699 Bytes = 2289.75 KiB = 2.24 MiB
Load Address: 00500000
Entry Point:  005014e0
Completed OK
# rm -rf /kisskb/build/powerpc-fixes_44x_rainier_defconfig_powerpc-gcc4.6
# Build took: 0:00:35.145679