# git rev-parse -q --verify 9ede3728899d26f7bd67fd6b8830d58b9ac1a569^{commit}
# git fetch -q -n -f git://gitlab.ozlabs.ibm.com/linuxppc/linux.git fixes-test
error: The last gc run reported the following. Please correct the root cause
and remove .git/gc.log.
Automatic cleanup will not be performed until the file is removed.

warning: There are too many unreachable loose objects; run 'git prune' to remove them.

# git rev-parse -q --verify 9ede3728899d26f7bd67fd6b8830d58b9ac1a569^{commit}
9ede3728899d26f7bd67fd6b8830d58b9ac1a569
# git checkout -q -f -B kisskb 9ede3728899d26f7bd67fd6b8830d58b9ac1a569
# git clean -qxdf
# < git log -1
# commit 9ede3728899d26f7bd67fd6b8830d58b9ac1a569
# Author: Michael Ellerman <mpe@ellerman.id.au>
# Date:   Tue Jan 15 16:19:05 2019 +1100
# 
#     powerpc/syscalls: Fix syscall tracing
#     
#     Recently in commit fbf508da7440 ("powerpc: split compat syscall table
#     out from native table") we change the layout of the system call table.
#     Instead of having two entries for each syscall number, one for the
#     regular entry point and one for the compat entry point, we now have
#     separate tables for regular and compat.
#     
#     This inadvertently broke syscall tracing (CONFIG_FTRACE_SYSCALLS),
#     because our implementation of arch_syscall_addr() knew about the
#     layout of the table (it did nr * 2).
#     
#     We can fix it just by dropping our version of arch_syscall_addr() and
#     using the generic version which does:
#     
#             return (unsigned long)sys_call_table[nr];
#     
#     Fixes: fbf508da7440 ("powerpc: split compat syscall table out from native table")
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-ld --version
# < git log --format=%s --max-count=1 9ede3728899d26f7bd67fd6b8830d58b9ac1a569
# < make -s -j 80 ARCH=x86_64 O=/kisskb/build/powerpc-fixes_x86_64-allnoconfig_x86_64-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-  allnoconfig
# make -s -j 80 ARCH=x86_64 O=/kisskb/build/powerpc-fixes_x86_64-allnoconfig_x86_64-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-  
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:186:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/arch/x86/kernel/apic/io_apic.c: In function 'mp_map_pin_to_irq':
/kisskb/src/arch/x86/kernel/apic/io_apic.c:1034:6: warning: 'irq' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/arch/x86/kernel/e820.c: In function 'e820__setup_pci_gap':
/kisskb/src/arch/x86/kernel/e820.c:650:16: warning: 'gapstart' may be used uninitialized in this function [-Wuninitialized]
Completed OK
# rm -rf /kisskb/build/powerpc-fixes_x86_64-allnoconfig_x86_64-gcc4.6
# Build took: 0:00:19.011294