# git rev-parse -q --verify 397758385ba96da48a96f82cf3521f994f3a78b3^{commit}
397758385ba96da48a96f82cf3521f994f3a78b3
already have revision, skipping fetch
# git checkout -q -f -B kisskb 397758385ba96da48a96f82cf3521f994f3a78b3
# git clean -qxdf
# < git log -1
# commit 397758385ba96da48a96f82cf3521f994f3a78b3
# Author: Michael Ellerman <mpe@ellerman.id.au>
# Date:   Tue Jul 10 16:20:56 2018 +1000
# 
#     powerpc/uaccess: Enable get_user(u64, *p) on 32-bit
#     
#     Currently if you build a 32-bit powerpc kernel and use get_user() to
#     load a u64 value it will fail to build with eg:
#     
#       kernel/rseq.o: In function `rseq_get_rseq_cs':
#       kernel/rseq.c:123: undefined reference to `__get_user_bad'
#     
#     This is hitting the check in __get_user_size() that makes sure the
#     size we're copying doesn't exceed the size of the destination:
#     
#       #define __get_user_size(x, ptr, size, retval)
#       do {
#       	retval = 0;
#       	__chk_user_ptr(ptr);
#       	if (size > sizeof(x))
#       		(x) = __get_user_bad();
#     
#     Which doesn't immediately make sense because the size of the
#     destination is u64, but it's not really, because __get_user_check()
#     etc. internally create an unsigned long and copy into that:
#     
#       #define __get_user_check(x, ptr, size)
#       ({
#       	long __gu_err = -EFAULT;
#       	unsigned long  __gu_val = 0;
#     
#     The problem being that on 32-bit unsigned long is not big enough to
#     hold a u64. We can fix this with a trick from hpa in the x86 code, we
#     statically check the type of x and set the type of __gu_val to either
#     unsigned long or unsigned long long.
#     
#     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 397758385ba96da48a96f82cf3521f994f3a78b3
# < make -s -j 10 ARCH=powerpc O=/kisskb/build/powerpc-next-rand_powerpc-randconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  randconfig
KCONFIG_SEED=0x861DB5BF

WARNING: unmet direct dependencies detected for LEDS_TRIGGER_DISK
  Depends on [n]: NEW_LEDS [=y] && (IDE_GD_ATA [=n] || ATA [=n]) && LEDS_TRIGGERS [=y]
  Selected by [y]:
  - ADB_PMU_LED_DISK [=y] && MACINTOSH_DRIVERS [=y] && ADB_PMU_LED [=y] && LEDS_CLASS [=y]
# Added to kconfig CONFIG_STANDALONE=y
# Added to kconfig CONFIG_BUILD_DOCSRC=n
# Added to kconfig CONFIG_MODULE_SIG=n
# Added to kconfig CONFIG_CPU_BIG_ENDIAN=y
# Added to kconfig CONFIG_PPC64=y
# Added to kconfig CONFIG_PPC_DISABLE_WERROR=y
# Added to kconfig CONFIG_SECTION_MISMATCH_WARN_ONLY=y
# Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y
# Added to kconfig CONFIG_CC_STACKPROTECTOR_STRONG=n
# Added to kconfig CONFIG_GCC_PLUGINS=n
# Added to kconfig CONFIG_LD_HEAD_STUB_CATCH=y
# Added to kconfig 
# yes \n | make -s -j 10 ARCH=powerpc O=/kisskb/build/powerpc-next-rand_powerpc-randconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  oldconfig
yes: standard output: Broken pipe
yes: write error
# make -s -j 10 ARCH=powerpc O=/kisskb/build/powerpc-next-rand_powerpc-randconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  

WARNING: unmet direct dependencies detected for LEDS_TRIGGER_DISK
  Depends on [n]: NEW_LEDS [=y] && (IDE_GD_ATA [=n] || ATA [=n]) && LEDS_TRIGGERS [=y]
  Selected by [y]:
  - ADB_PMU_LED_DISK [=y] && MACINTOSH_DRIVERS [=y] && ADB_PMU_LED [=y] && LEDS_CLASS [=y]

WARNING: unmet direct dependencies detected for LEDS_TRIGGER_DISK
  Depends on [n]: NEW_LEDS [=y] && (IDE_GD_ATA [=n] || ATA [=n]) && LEDS_TRIGGERS [=y]
  Selected by [y]:
  - ADB_PMU_LED_DISK [=y] && MACINTOSH_DRIVERS [=y] && ADB_PMU_LED [=y] && LEDS_CLASS [=y]
/kisskb/src/arch/powerpc/kvm/book3s_hv.c: In function 'kvmppc_run_core':
/kisskb/src/arch/powerpc/kvm/book3s_hv.c:2997:2: error: implicit declaration of function 'this_cpu_disable_ftrace' [-Werror=implicit-function-declaration]
/kisskb/src/arch/powerpc/kvm/book3s_hv.c:3001:2: error: implicit declaration of function 'this_cpu_enable_ftrace' [-Werror=implicit-function-declaration]
cc1: some warnings being treated as errors
/kisskb/src/scripts/Makefile.build:317: recipe for target 'arch/powerpc/kvm/book3s_hv.o' failed
make[2]: *** [arch/powerpc/kvm/book3s_hv.o] Error 1
/kisskb/src/Makefile:1034: recipe for target 'arch/powerpc/kvm' failed
make[1]: *** [arch/powerpc/kvm] Error 2
make[1]: *** Waiting for unfinished jobs....
/kisskb/src/kernel/cgroup/cgroup-v1.c: In function 'cgroup1_mount':
/kisskb/src/kernel/cgroup/cgroup-v1.c:1256:20: warning: 'root' may be used uninitialized in this function [-Wuninitialized]
/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]
Makefile:146: recipe for target 'sub-make' failed
make: *** [sub-make] Error 2
Command 'make -s -j 10 ARCH=powerpc O=/kisskb/build/powerpc-next-rand_powerpc-randconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/powerpc-next-rand_powerpc-randconfig_powerpc
# Build took: 0:00:22.044796