Buildresult: powerpc-fixes/versatile_defconfig/arm-gcc4.6 built on Jul 19 2018, 00:37

kisskb

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Status:	OK
Date/Time:	Jul 19 2018, 00:37
Duration:	0:01:13.703713
Builder:	ka1
Revision:	powerpc/powernv: Fix save/restore of SPRG3 on entry/exit from stop (idle) (`b03897cf318dfc47de33a7ecbc7655584266f034)`
Target:	powerpc-fixes/versatile_defconfig/arm-gcc4.6
Branch:	powerpc-fixes
Compiler:	arm-gcc4.6 (arm-unknown-linux-gnueabi-gcc (GCC) 4.6.3)
Config:	versatile_defconfig (download)
Log:	Download original Possible warnings (6) <stdin>:1332:2: warning: #warning syscall io_pgetevents not implemented [-Wcpp] kernel/printk/printk.c:183:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized] drivers/base/regmap/regmap.c:2497:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] drivers/base/regmap/regmap.c:1819:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] drivers/dma-buf/reservation.c:225:6: warning: 'k' may be used uninitialized in this function [-Wuninitialized] Full Log # git rev-parse -q --verify b03897cf318dfc47de33a7ecbc7655584266f034^{commit} # git fetch -q -n -f git://gitlab.ozlabs.ibm.com/linuxppc/linux.git fixes-test # git rev-parse -q --verify b03897cf318dfc47de33a7ecbc7655584266f034^{commit} b03897cf318dfc47de33a7ecbc7655584266f034 # git checkout -q -f -B kisskb b03897cf318dfc47de33a7ecbc7655584266f034 # git clean -qxdf # < git log -1 # commit b03897cf318dfc47de33a7ecbc7655584266f034 # Author: Gautham R. Shenoy <ego@linux.vnet.ibm.com> # Date: Wed Jul 18 14:03:16 2018 +0530 # # powerpc/powernv: Fix save/restore of SPRG3 on entry/exit from stop (idle) # # On 64-bit servers, SPRN_SPRG3 and its userspace read-only mirror # SPRN_USPRG3 are used as userspace VDSO write and read registers # respectively. # # SPRN_SPRG3 is lost when we enter stop4 and above, and is currently not # restored. As a result, any read from SPRN_USPRG3 returns zero on an # exit from stop4 (Power9 only) and above. # # Thus in this situation, on POWER9, any call from sched_getcpu() always # returns zero, as on powerpc, we call __kernel_getcpu() which relies # upon SPRN_USPRG3 to report the CPU and NUMA node information. # # Fix this by restoring SPRN_SPRG3 on wake up from a deep stop state # with the sprg_vdso value that is cached in PACA. # # Fixes: e1c1cfed5432 ("powerpc/powernv: Save/Restore additional SPRs for stop4 cpuidle") # Cc: stable@vger.kernel.org # v4.14+ # Reported-by: Florian Weimer <fweimer@redhat.com> # Signed-off-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com> # Reviewed-by: Michael Ellerman <mpe@ellerman.id.au> # Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # < /opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-gcc --version # < git log --format=%s --max-count=1 b03897cf318dfc47de33a7ecbc7655584266f034 # < make -s -j 48 ARCH=arm O=/kisskb/build/powerpc-fixes_versatile_defconfig_arm CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi- versatile_defconfig # make -s -j 48 ARCH=arm O=/kisskb/build/powerpc-fixes_versatile_defconfig_arm CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi- /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/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/net/Makefile:24: CC cannot link executables. Skipping bpfilter. /kisskb/src/drivers/dma-buf/reservation.c: In function 'reservation_object_add_shared_fence': /kisskb/src/drivers/dma-buf/reservation.c:225:6: warning: 'k' may be used uninitialized in this function [-Wuninitialized] Completed OK # rm -rf /kisskb/build/powerpc-fixes_versatile_defconfig_arm # Build took: 0:01:13.703713

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