# git rev-parse -q --verify 57fa2369ab17d67e6232f85b868652fbf4407206^{commit}
57fa2369ab17d67e6232f85b868652fbf4407206
already have revision, skipping fetch
# git checkout -q -f -B kisskb 57fa2369ab17d67e6232f85b868652fbf4407206
# git clean -qxdf
# < git log -1
# commit 57fa2369ab17d67e6232f85b868652fbf4407206
# Merge: 2fbc66c7838a 9186ad8e66ba
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Tue Apr 27 10:16:46 2021 -0700
# 
#     Merge tag 'cfi-v5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
#     
#     Pull CFI on arm64 support from Kees Cook:
#      "This builds on last cycle's LTO work, and allows the arm64 kernels to
#       be built with Clang's Control Flow Integrity feature. This feature has
#       happily lived in Android kernels for almost 3 years[1], so I'm excited
#       to have it ready for upstream.
#     
#       The wide diffstat is mainly due to the treewide fixing of mismatched
#       list_sort prototypes. Other things in core kernel are to address
#       various CFI corner cases. The largest code portion is the CFI runtime
#       implementation itself (which will be shared by all architectures
#       implementing support for CFI). The arm64 pieces are Acked by arm64
#       maintainers rather than coming through the arm64 tree since carrying
#       this tree over there was going to be awkward.
#     
#       CFI support for x86 is still under development, but is pretty close.
#       There are a handful of corner cases on x86 that need some improvements
#       to Clang and objtool, but otherwise works well.
#     
#       Summary:
#     
#        - Clean up list_sort prototypes (Sami Tolvanen)
#     
#        - Introduce CONFIG_CFI_CLANG for arm64 (Sami Tolvanen)"
#     
#     * tag 'cfi-v5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
#       arm64: allow CONFIG_CFI_CLANG to be selected
#       KVM: arm64: Disable CFI for nVHE
#       arm64: ftrace: use function_nocfi for ftrace_call
#       arm64: add __nocfi to __apply_alternatives
#       arm64: add __nocfi to functions that jump to a physical address
#       arm64: use function_nocfi with __pa_symbol
#       arm64: implement function_nocfi
#       psci: use function_nocfi for cpu_resume
#       lkdtm: use function_nocfi
#       treewide: Change list_sort to use const pointers
#       bpf: disable CFI in dispatcher functions
#       kallsyms: strip ThinLTO hashes from static functions
#       kthread: use WARN_ON_FUNCTION_MISMATCH
#       workqueue: use WARN_ON_FUNCTION_MISMATCH
#       module: ensure __cfi_check alignment
#       mm: add generic function_nocfi macro
#       cfi: add __cficanonical
#       add support for Clang CFI
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/s390-linux/bin/s390-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/s390-linux/bin/s390-linux-ld --version
# < git log --format=%s --max-count=1 57fa2369ab17d67e6232f85b868652fbf4407206
# < make -s -j 120 ARCH=s390 O=/kisskb/build/linus_s390-allyesconfig_s390x-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/s390-linux/bin/s390-linux-  allyesconfig
# Added to kconfig CONFIG_BUILD_DOCSRC=n
# Added to kconfig CONFIG_MODULE_SIG=n
# < make -s -j 120 ARCH=s390 O=/kisskb/build/linus_s390-allyesconfig_s390x-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/s390-linux/bin/s390-linux-  help
# make -s -j 120 ARCH=s390 O=/kisskb/build/linus_s390-allyesconfig_s390x-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/s390-linux/bin/s390-linux-  olddefconfig
# make -s -j 120 ARCH=s390 O=/kisskb/build/linus_s390-allyesconfig_s390x-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/s390-linux/bin/s390-linux-  
/kisskb/src/drivers/gpu/drm/rockchip/cdn-dp-core.c:1124:12: warning: 'cdn_dp_resume' defined but not used [-Wunused-function]
 static int cdn_dp_resume(struct device *dev)
            ^~~~~~~~~~~~~
/kisskb/src/lib/bitfield_kunit.c: In function 'test_bitfields_constants':
/kisskb/src/lib/bitfield_kunit.c:93:1: warning: the frame size of 7424 bytes is larger than 2048 bytes [-Wframe-larger-than=]
 }
 ^
/kisskb/src/drivers/input/joystick/analog.c:160:2: warning: #warning Precise timer not defined for this architecture. [-Wcpp]
 #warning Precise timer not defined for this architecture.
  ^~~~~~~
In file included from /kisskb/src/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c:42:
/kisskb/src/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c: In function 'mvpp2_setup_bm_pool':
/kisskb/src/drivers/net/ethernet/marvell/mvpp2/mvpp2.h:844:2: warning: overflow in conversion from 'long unsigned int' to 'int' changes value from '18446744073709551584' to '-32' [-Woverflow]
  ((total_size) - MVPP2_SKB_HEADROOM - MVPP2_SKB_SHINFO_SIZE)
  ^
/kisskb/src/drivers/net/ethernet/marvell/mvpp2/mvpp2.h:948:33: note: in expansion of macro 'MVPP2_RX_MAX_PKT_SIZE'
 #define MVPP2_BM_SHORT_PKT_SIZE MVPP2_RX_MAX_PKT_SIZE(MVPP2_BM_SHORT_FRAME_SIZE)
                                 ^~~~~~~~~~~~~~~~~~~~~
/kisskb/src/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c:683:41: note: in expansion of macro 'MVPP2_BM_SHORT_PKT_SIZE'
  mvpp2_pools[MVPP2_BM_SHORT].pkt_size = MVPP2_BM_SHORT_PKT_SIZE;
                                         ^~~~~~~~~~~~~~~~~~~~~~~
/kisskb/src/drivers/iio/test/iio-test-format.c: In function 'iio_test_iio_format_value_fixedpoint':
/kisskb/src/drivers/iio/test/iio-test-format.c:98:1: warning: the frame size of 2320 bytes is larger than 2048 bytes [-Wframe-larger-than=]
 }
 ^
Completed OK
# rm -rf /kisskb/build/linus_s390-allyesconfig_s390x-gcc8
# Build took: 0:12:22.374054