# git rev-parse -q --verify 9c1a41149230e5e2d48c8948943306b8c0c9f242^{commit}
9c1a41149230e5e2d48c8948943306b8c0c9f242
already have revision, skipping fetch
# git checkout -q -f -B kisskb 9c1a41149230e5e2d48c8948943306b8c0c9f242
# git clean -qxdf
# < git log -1
# commit 9c1a41149230e5e2d48c8948943306b8c0c9f242
# Author: Nicholas Piggin <npiggin@gmail.com>
# Date:   Fri Mar 23 15:53:38 2018 +1000
# 
#     powerpc/64s: Fix i-side SLB miss bad address handler saving nonvolatile GPRs
#     
#     The SLB bad address handler's trap number fixup does not preserve the
#     low bit that indicates nonvolatile GPRs have not been saved. This
#     leads save_nvgprs to skip saving them, and subsequent functions and
#     return from interrupt will think they are saved.
#     
#     This causes kernel branch-to-garbage debugging to not have correct
#     registers, can also cause userspace to have its registers clobbered
#     after a segfault.
#     
#     Fixes: f0f558b131 ("powerpc/mm: Preserve CFAR value on SLB miss caused by access to bogus address")
#     Cc: Paul Mackerras <paulus@ozlabs.org>
#     Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
#     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 9c1a41149230e5e2d48c8948943306b8c0c9f242
# < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-fixes_c2k_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  c2k_defconfig
warning: (PPC_C2K && AMIGAONE) selects NOT_COHERENT_CACHE which has unmet direct dependencies (4xx || PPC_8xx || E200 || PPC_MPC512x || GAMECUBE_COMMON)
warning: (PPC_C2K && AMIGAONE) selects NOT_COHERENT_CACHE which has unmet direct dependencies (4xx || PPC_8xx || E200 || PPC_MPC512x || GAMECUBE_COMMON)
# make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-fixes_c2k_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  
warning: (PPC_C2K && AMIGAONE) selects NOT_COHERENT_CACHE which has unmet direct dependencies (4xx || PPC_8xx || E200 || PPC_MPC512x || GAMECUBE_COMMON)
warning: (PPC_C2K && AMIGAONE) selects NOT_COHERENT_CACHE which has unmet direct dependencies (4xx || PPC_8xx || E200 || PPC_MPC512x || GAMECUBE_COMMON)
/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/bridge/br_netlink.c: In function 'br_afspec':
/kisskb/src/net/bridge/br_netlink.c:635:7: warning: 'err' 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:1820:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/tun.c:1730:46: warning: 'linear' may be used uninitialized in this function [-Wuninitialized]
INFO: Uncompressed kernel (size 0x6b3e94) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x700000)
Image Name:   Linux-4.16.0-rc2-g9c1a411
Created:      Sat Mar 24 23:29:22 2018
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    3245113 Bytes = 3169.06 kB = 3.09 MB
Load Address: 00700000
Entry Point:  007004fc
Completed OK
# rm -rf /kisskb/build/powerpc-fixes_c2k_defconfig_powerpc
# Build took: 0:01:25.623197