# git rev-parse -q --verify abd19d9b221d5f22c0f53ca3bc7366d824e7462f^{commit}
abd19d9b221d5f22c0f53ca3bc7366d824e7462f
already have revision, skipping fetch
# git checkout -q -f -B kisskb abd19d9b221d5f22c0f53ca3bc7366d824e7462f
# git clean -qxdf
# < git log -1
# commit abd19d9b221d5f22c0f53ca3bc7366d824e7462f
# Author: Alexey Kardashevskiy <aik@ozlabs.ru>
# Date:   Tue Sep 11 15:38:05 2018 +1000
# 
#     powerpc/powernv/ioda2: Reduce upper limit for DMA window size (retry)
#     
#     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: ce57c6610cc2 "Merge branch 'topic/ppc-kvm' into next"
#     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 abd19d9b221d5f22c0f53ca3bc7366d824e7462f
# < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-fixes_mvme5100_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  mvme5100_defconfig
# make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-fixes_mvme5100_defconfig_powerpc 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:185:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/ipc/shm.c: In function 'ksys_shmdt':
/kisskb/src/ipc/shm.c:1686:59: warning: 'file' 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:341:21: note: 'pdeo' was declared here
/kisskb/src/net/core/gen_stats.c: In function '__gnet_stats_copy_basic':
/kisskb/src/net/core/gen_stats.c:161:19: warning: 'seq' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/core/dev.c: In function 'validate_xmit_skb_list':
/kisskb/src/net/core/dev.c:3343:15: warning: 'tail' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/i2c/i2c-core-base.c: In function 'i2c_generic_scl_recovery':
/kisskb/src/drivers/i2c/i2c-core-base.c:235:5: 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:246:2: 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
/kisskb/src/lib/rhashtable.c: In function 'rht_deferred_worker':
/kisskb/src/lib/rhashtable.c:264:2: warning: 'next' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/lib/rhashtable.c:229:28: note: 'next' was declared here
/kisskb/src/fs/udf/unicode.c: In function 'udf_name_conv_char':
/kisskb/src/fs/udf/unicode.c:132:8: warning: 'c' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/tun.c: In function 'tun_get_user':
/kisskb/src/drivers/net/tun.c:1836:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/tun.c:1546:31: warning: 'linear' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/tun.c:1746:46: note: 'linear' was declared here
INFO: Uncompressed kernel (size 0x41c148) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x500000)
Completed OK
# rm -rf /kisskb/build/powerpc-fixes_mvme5100_defconfig_powerpc
# Build took: 0:00:41.739295