# git rev-parse -q --verify 6ccb4ac2bf8a35c694ead92f8ac5530a16e8f2c8^{commit}
6ccb4ac2bf8a35c694ead92f8ac5530a16e8f2c8
already have revision, skipping fetch
# git checkout -q -f -B kisskb 6ccb4ac2bf8a35c694ead92f8ac5530a16e8f2c8
# git clean -qxdf
# < git log -1
# commit 6ccb4ac2bf8a35c694ead92f8ac5530a16e8f2c8
# Author: Greg Kurz <groug@kaod.org>
# Date:   Wed Sep 11 17:52:18 2019 +0200
# 
#     powerpc/xive: Fix bogus error code returned by OPAL
#     
#     There's a bug in skiboot that causes the OPAL_XIVE_ALLOCATE_IRQ call
#     to return the 32-bit value 0xffffffff when OPAL has run out of IRQs.
#     Unfortunatelty, OPAL return values are signed 64-bit entities and
#     errors are supposed to be negative. If that happens, the linux code
#     confusingly treats 0xffffffff as a valid IRQ number and panics at some
#     point.
#     
#     A fix was recently merged in skiboot:
#     
#     e97391ae2bb5 ("xive: fix return value of opal_xive_allocate_irq()")
#     
#     but we need a workaround anyway to support older skiboots already
#     in the field.
#     
#     Internally convert 0xffffffff to OPAL_RESOURCE which is the usual error
#     returned upon resource exhaustion.
#     
#     Cc: stable@vger.kernel.org # v4.12+
#     Signed-off-by: Greg Kurz <groug@kaod.org>
#     Reviewed-by: Cédric Le Goater <clg@kaod.org>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/156821713818.1985334.14123187368108582810.stgit@bahia.lan
# < /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 6ccb4ac2bf8a35c694ead92f8ac5530a16e8f2c8
# < make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-next_83xx_mpc832x_mds_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  83xx/mpc832x_mds_defconfig
# make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-next_83xx_mpc832x_mds_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
INFO: Uncompressed kernel (size 0x52e9c0) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x600000)
INFO: Uncompressed kernel (size 0x51e2a8) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x600000)
Image Name:   Linux-5.3.0-rc2-g6ccb4ac2bf8a
Created:      Fri Sep 13 21:52:29 2019
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    2604990 Bytes = 2543.94 KiB = 2.48 MiB
Load Address: 00000000
Entry Point:  00000000
Image Name:   Linux-5.3.0-rc2-g6ccb4ac2bf8a
Created:      Fri Sep 13 21:52:30 2019
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    2634741 Bytes = 2572.99 KiB = 2.51 MiB
Load Address: 00600000
Entry Point:  00600294
Completed OK
# rm -rf /kisskb/build/powerpc-next_83xx_mpc832x_mds_defconfig_powerpc-gcc5
# Build took: 0:00:42.100496