# git rev-parse -q --verify e310e405015f48d18684d89aa27f8c7536b51268^{commit}
e310e405015f48d18684d89aa27f8c7536b51268
already have revision, skipping fetch
# git checkout -q -f -B kisskb e310e405015f48d18684d89aa27f8c7536b51268
# git clean -qxdf
# < git log -1
# commit e310e405015f48d18684d89aa27f8c7536b51268
# Author: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
# Date:   Sun Aug 19 22:38:32 2018 +0530
# 
#     powerpc/pseries: Dump the SLB contents on SLB MCE errors.
#     
#     If we get a machine check exceptions due to SLB errors then dump the
#     current SLB contents which will be very much helpful in debugging the
#     root cause of SLB errors. Introduce an exclusive buffer per cpu to hold
#     faulty SLB entries. In real mode mce handler saves the old SLB contents
#     into this buffer accessible through paca and print it out later in virtual
#     mode.
#     
#     With this patch the console will log SLB contents like below on SLB MCE
#     errors:
#     
#     [  507.297236] SLB contents of cpu 0x1
#     [  507.297237] Last SLB entry inserted at slot 16
#     [  507.297238] 00 c000000008000000 400ea1b217000500
#     [  507.297239]   1T  ESID=   c00000  VSID=      ea1b217 LLP:100
#     [  507.297240] 01 d000000008000000 400d43642f000510
#     [  507.297242]   1T  ESID=   d00000  VSID=      d43642f LLP:110
#     [  507.297243] 11 f000000008000000 400a86c85f000500
#     [  507.297244]   1T  ESID=   f00000  VSID=      a86c85f LLP:100
#     [  507.297245] 12 00007f0008000000 4008119624000d90
#     [  507.297246]   1T  ESID=       7f  VSID=      8119624 LLP:110
#     [  507.297247] 13 0000000018000000 00092885f5150d90
#     [  507.297247]  256M ESID=        1  VSID=   92885f5150 LLP:110
#     [  507.297248] 14 0000010008000000 4009e7cb50000d90
#     [  507.297249]   1T  ESID=        1  VSID=      9e7cb50 LLP:110
#     [  507.297250] 15 d000000008000000 400d43642f000510
#     [  507.297251]   1T  ESID=   d00000  VSID=      d43642f LLP:110
#     [  507.297252] 16 d000000008000000 400d43642f000510
#     [  507.297253]   1T  ESID=   d00000  VSID=      d43642f LLP:110
#     [  507.297253] ----------------------------------
#     [  507.297254] SLB cache ptr value = 3
#     [  507.297254] Valid SLB cache entries:
#     [  507.297255] 00 EA[0-35]=    7f000
#     [  507.297256] 01 EA[0-35]=        1
#     [  507.297257] 02 EA[0-35]=     1000
#     [  507.297257] Rest of SLB cache entries:
#     [  507.297258] 03 EA[0-35]=    7f000
#     [  507.297258] 04 EA[0-35]=        1
#     [  507.297259] 05 EA[0-35]=     1000
#     [  507.297260] 06 EA[0-35]=       12
#     [  507.297260] 07 EA[0-35]=    7f000
#     
#     Suggested-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
#     Suggested-by: Michael Ellerman <mpe@ellerman.id.au>
#     Signed-off-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
#     Reviewed-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 e310e405015f48d18684d89aa27f8c7536b51268
# < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_ps3_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  ps3_defconfig
# make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_ps3_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.
/kisskb/src/kernel/rcu/srcutree.c: In function 'init_srcu_struct_fields':
/kisskb/src/kernel/rcu/srcutree.c:146:32: warning: 'levelspread[<Ud6e0>]' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/kernel/rcu/srcutree.c:94:6: note: 'levelspread[<Ud6e0>]' was declared here
/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/ipc/shm.c: In function 'ksys_shmdt':
/kisskb/src/ipc/shm.c:1648:59: warning: 'file' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/Makefile:24: CC cannot link executables. Skipping bpfilter.
/kisskb/src/net/bluetooth/hidp/core.c: In function 'hidp_connection_add':
/kisskb/src/net/bluetooth/hidp/core.c:1378:18: warning: 'session' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/lib/mpi/mpicoder.c: In function 'mpi_read_raw_from_sgl':
/kisskb/src/lib/mpi/mpicoder.c:352:8: warning: 'buff' 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:339:21: note: 'pdeo' 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/lib/rhashtable.c: In function 'rht_deferred_worker':
/kisskb/src/lib/rhashtable.c:269:2: warning: 'next' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/lib/rhashtable.c:234:28: note: 'next' was declared here
/kisskb/src/net/core/gen_stats.c: In function '__gnet_stats_copy_basic':
/kisskb/src/net/core/gen_stats.c:149:19: warning: 'seq' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/core/flow_dissector.c: In function '__skb_flow_dissect':
/kisskb/src/net/core/flow_dissector.c:789:7: warning: 'vlan' 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:3161:15: warning: 'tail' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/mac80211/mlme.c: In function 'ieee80211_rx_mgmt_beacon':
/kisskb/src/net/mac80211/mlme.c:1353:3: warning: 'pwr_level_cisco' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/mac80211/mlme.c:1310:6: note: 'pwr_level_cisco' was declared here
/kisskb/src/net/mac80211/tx.c: In function 'ieee80211_build_hdr':
/kisskb/src/net/mac80211/tx.c:2468:27: warning: 'chanctx_conf' may be used uninitialized in this function [-Wuninitialized]
Completed OK
# rm -rf /kisskb/build/powerpc-next_ps3_defconfig_powerpc
# Build took: 0:01:10.735955