# git rev-parse -q --verify 210453542946c37317478591cc9ca4a53c062aeb^{commit}
210453542946c37317478591cc9ca4a53c062aeb
already have revision, skipping fetch
# git checkout -q -f -B kisskb 210453542946c37317478591cc9ca4a53c062aeb
# git clean -qxdf
# < git log -1
# commit 210453542946c37317478591cc9ca4a53c062aeb
# Author: Alexey Kardashevskiy <aik@ozlabs.ru>
# Date:   Fri Jun 1 18:06:16 2018 +1000
# 
#     powerpc/powernv/ioda2: Reduce upper limit for DMA window size
#     
#     We use PHB in mode1 which uses bit 59 to select a correct DMA window.
#     However there is mode2 which uses bits 59:55 and allows up to 32 DMA
#     windows per a PE.
#     
#     Even though documentation does not clearly specify that, it seems that
#     the actual hardware does not support bits 59:55 even in mode1, in other
#     words we can create a window as big as 1<<58 but DMA simply won't work.
#     
#     This reduces the upper limit from 59 to 55 bits to let the userspace know
#     about the hardware limits.
#     
#     Fixes: 7aafac11e3 "powerpc/powernv/ioda2: Gracefully fail if too many TCE levels requested"
#     Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
#     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 210453542946c37317478591cc9ca4a53c062aeb
# < make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_40x_obs600_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  40x/obs600_defconfig
# make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_40x_obs600_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.
<stdin>:1332:2: warning: #warning syscall io_pgetevents not implemented [-Wcpp]
/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/base/regmap/regmap.c: In function 'regmap_raw_read':
/kisskb/src/drivers/base/regmap/regmap.c:2497:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/base/regmap/regmap.c: In function '_regmap_raw_write':
/kisskb/src/drivers/base/regmap/regmap.c:1819:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/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 0x485a70) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x500000)
Image Name:   Linux-4.18.0-rc2-g2104535
Created:      Thu Jun 28 00:35:35 2018
Image Type:   PowerPC Linux Multi-File Image (gzip compressed)
Data Size:    2289634 Bytes = 2235.97 kB = 2.18 MB
Load Address: 00000000
Entry Point:  00000000
Contents:
   Image 0: 2282747 Bytes = 2229.25 kB = 2.18 MB
   Image 1: 3 Bytes = 0.00 kB = 0.00 MB
   Image 2: 6866 Bytes = 6.71 kB = 0.01 MB
Completed OK
# rm -rf /kisskb/build/powerpc-next_40x_obs600_defconfig_powerpc
# Build took: 0:00:16.073614