# git rev-parse -q --verify 91288fcc5a7ebb6378f442916299dc20d037aa72^{commit}
91288fcc5a7ebb6378f442916299dc20d037aa72
already have revision, skipping fetch
# git checkout -q -f -B kisskb 91288fcc5a7ebb6378f442916299dc20d037aa72
# git clean -qxdf
# < git log -1
# commit 91288fcc5a7ebb6378f442916299dc20d037aa72
# Author: Oliver O'Halloran <oohall@gmail.com>
# Date:   Wed Oct 23 12:36:35 2019 +1100
# 
#     powerpc/boot: Fix the initrd being overwritten under qemu
#     
#     When booting under OF the zImage expects the initrd address and size
#     to be passed to it using registers r3 and r4. SLOF (guest firmware
#     used by QEMU) currently doesn't do this so the zImage is not aware of
#     the initrd location. This can result in initrd corruption either
#     though the zImage extracting the vmlinux over the initrd, or by the
#     vmlinux overwriting the initrd when relocating itself.
#     
#     QEMU does put the linux,initrd-start and linux,initrd-end properties
#     into the devicetree to vmlinux to find the initrd. So we can work
#     around the problem by also looking for those properties in the zImage.
#     
#     Cc: stable@vger.kernel.org
#     Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/20191023013635.2512-1-oohall@gmail.com
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version
# < git log --format=%s --max-count=1 91288fcc5a7ebb6378f442916299dc20d037aa72
# < make -s -j 32 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc40x_defconfig_powerpc-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  ppc40x_defconfig
# make -s -j 32 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc40x_defconfig_powerpc-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
/kisskb/src/arch/powerpc/kernel/head_40x.S: Assembler messages:
/kisskb/src/arch/powerpc/kernel/head_40x.S:802: Warning: invalid register expression
INFO: Uncompressed kernel (size 0x5fe050) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x600000)
INFO: Uncompressed kernel (size 0x5fe050) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x600000)
INFO: Uncompressed kernel (size 0x5fe050) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x600000)
INFO: Uncompressed kernel (size 0x5ed9a0) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x600000)
INFO: Uncompressed kernel (size 0x5fe050) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x600000)
Image Name:   Linux-5.5.0-rc5-g91288fcc5a7e
Created:      Thu Jan 16 08:12:41 2020
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    2982943 Bytes = 2913.03 KiB = 2.84 MiB
Load Address: 00000000
Entry Point:  00000000
Image Name:   Linux-5.5.0-rc5-g91288fcc5a7e
Created:      Thu Jan 16 08:12:41 2020
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    3019814 Bytes = 2949.04 KiB = 2.88 MiB
Load Address: 00600000
Entry Point:  00601ad4
Image Name:   Linux-5.5.0-rc5-g91288fcc5a7e
Created:      Thu Jan 16 08:12:41 2020
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    3019779 Bytes = 2949.00 KiB = 2.88 MiB
Load Address: 00600000
Entry Point:  00601860
Completed OK
# rm -rf /kisskb/build/powerpc-next_ppc40x_defconfig_powerpc-gcc8
# Build took: 0:01:04.637865