# git rev-parse -q --verify 0be47634db0baa9e91c7e635e7e73355d6a5cf43^{commit}
0be47634db0baa9e91c7e635e7e73355d6a5cf43
already have revision, skipping fetch
# git checkout -q -f -B kisskb 0be47634db0baa9e91c7e635e7e73355d6a5cf43
# git clean -qxdf
# < git log -1
# commit 0be47634db0baa9e91c7e635e7e73355d6a5cf43
# Author: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
# Date:   Thu Dec 10 16:08:59 2020 +0530
# 
#     powerpc/cacheinfo: Print correct cache-sibling map/list for L2 cache
#     
#     On POWER platforms where only some groups of threads within a core
#     share the L2-cache (indicated by the ibm,thread-groups device-tree
#     property), we currently print the incorrect shared_cpu_map/list for
#     L2-cache in the sysfs.
#     
#     This patch reports the correct shared_cpu_map/list on such platforms.
#     
#     Example:
#     On a platform with "ibm,thread-groups" set to
#                      00000001 00000002 00000004 00000000
#                      00000002 00000004 00000006 00000001
#                      00000003 00000005 00000007 00000002
#                      00000002 00000004 00000000 00000002
#                      00000004 00000006 00000001 00000003
#                      00000005 00000007
#     
#     This indicates that threads {0,2,4,6} in the core share the L2-cache
#     and threads {1,3,5,7} in the core share the L2 cache.
#     
#     However, without the patch, the shared_cpu_map/list for L2 for CPUs 0,
#     1 is reported in the sysfs as follows:
#     
#     /sys/devices/system/cpu/cpu0/cache/index2/shared_cpu_list:0-7
#     /sys/devices/system/cpu/cpu0/cache/index2/shared_cpu_map:000000,000000ff
#     
#     /sys/devices/system/cpu/cpu1/cache/index2/shared_cpu_list:0-7
#     /sys/devices/system/cpu/cpu1/cache/index2/shared_cpu_map:000000,000000ff
#     
#     With the patch, the shared_cpu_map/list for L2 cache for CPUs 0, 1 is
#     correctly reported as follows:
#     
#     /sys/devices/system/cpu/cpu0/cache/index2/shared_cpu_list:0,2,4,6
#     /sys/devices/system/cpu/cpu0/cache/index2/shared_cpu_map:000000,00000055
#     
#     /sys/devices/system/cpu/cpu1/cache/index2/shared_cpu_list:1,3,5,7
#     /sys/devices/system/cpu/cpu1/cache/index2/shared_cpu_map:000000,000000aa
#     
#     This patch also defines cpu_l2_cache_mask() for !CONFIG_SMP case.
#     
#     Signed-off-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/1607596739-32439-6-git-send-email-ego@linux.vnet.ibm.com
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version
# < git log --format=%s --max-count=1 0be47634db0baa9e91c7e635e7e73355d6a5cf43
# < make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_gamecube_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  gamecube_defconfig
# make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_gamecube_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
INFO: Uncompressed kernel (size 0x875780) overlaps the address of the wrapper(0x600000)
INFO: Fixing the link_address of wrapper to (0x900000)
Completed OK
# rm -rf /kisskb/build/powerpc-next_gamecube_defconfig_powerpc-gcc5
# Build took: 0:00:32.763222