# git rev-parse -q --verify 516627be26024f9952005a3116cbdb9d6dc24428^{commit}
516627be26024f9952005a3116cbdb9d6dc24428
already have revision, skipping fetch
# git checkout -q -f -B kisskb 516627be26024f9952005a3116cbdb9d6dc24428
# git clean -qxdf
# < git log -1
# commit 516627be26024f9952005a3116cbdb9d6dc24428
# Author: Jordan Niethe <jniethe5@gmail.com>
# Date:   Tue Sep 10 16:01:02 2019 +1000
# 
#     powerpc/64s: Set reserved PCR bits
#     
#     Currently the reserved bits of the Processor Compatibility
#     Register (PCR) are cleared as per the Programming Note in Section
#     1.3.3 of version 3.0B of the Power ISA. This causes all new
#     architecture features to be made available when running on newer
#     processors with new architecture features added to the PCR as bits
#     must be set to disable a given feature.
#     
#     For example to disable new features added as part of Version 2.07 of
#     the ISA the corresponding bit in the PCR needs to be set.
#     
#     As new processor features generally require explicit kernel support
#     they should be disabled until such support is implemented. Therefore
#     kernels should set all unknown/reserved bits in the PCR such that any
#     new architecture features which the kernel does not currently know
#     about get disabled.
#     
#     An update is planned to the ISA to clarify that the PCR is an
#     exception to the Programming Note on reserved bits in Section 1.3.3.
#     
#     Signed-off-by: Jordan Niethe <jniethe5@gmail.com>
#     [alistair: Added some clarifications to the commit message]
#     Signed-off-by: Alistair Popple <alistair@popple.id.au>
#     Tested-by: Joel Stanley <joel@jms.id.au>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/20190910060102.21597-1-alistair@popple.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 516627be26024f9952005a3116cbdb9d6dc24428
# < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_52xx_cm5200_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  52xx/cm5200_defconfig
# make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_52xx_cm5200_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:338:21: note: 'pdeo' was declared here
/kisskb/src/drivers/usb/core/devio.c: In function 'async_completed':
/kisskb/src/drivers/usb/core/devio.c:613:23: warning: 'errno' may be used uninitialized in this function [-Wuninitialized]
INFO: Uncompressed kernel (size 0x50d138) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x600000)
Image Name:   Linux-5.3.0-rc2-g516627be2602
Created:      Sat Sep 14 01:37:01 2019
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    2576921 Bytes = 2516.52 KiB = 2.46 MiB
Load Address: 00000000
Entry Point:  00000000
Completed OK
# rm -rf /kisskb/build/powerpc-next_52xx_cm5200_defconfig_powerpc-gcc4.6
# Build took: 0:00:40.102795