# git rev-parse -q --verify 8b62a2b95d17d0b7d12b059a8a6e287009300fca^{commit}
# git fetch -q -n -f git://gitlab.ozlabs.ibm.com/linuxppc/linux.git fixes-test
error: The last gc run reported the following. Please correct the root cause
and remove .git/gc.log.
Automatic cleanup will not be performed until the file is removed.

warning: There are too many unreachable loose objects; run 'git prune' to remove them.

# git rev-parse -q --verify 8b62a2b95d17d0b7d12b059a8a6e287009300fca^{commit}
8b62a2b95d17d0b7d12b059a8a6e287009300fca
# git checkout -q -f -B kisskb 8b62a2b95d17d0b7d12b059a8a6e287009300fca
# git clean -qxdf
# < git log -1
# commit 8b62a2b95d17d0b7d12b059a8a6e287009300fca
# Author: Michael Ellerman <mpe@ellerman.id.au>
# Date:   Tue Apr 9 15:43:11 2019 +1000
# 
#     powerpc/mm: Define MAX_PHYSMEM_BITS for all 64-bit configs
#     
#     The recent commit 8bc086899816 ("powerpc/mm: Only define
#     MAX_PHYSMEM_BITS in SPARSEMEM configurations") removed our definition
#     of MAX_PHYSMEM_BITS when SPARSEMEM is disabled.
#     
#     This inadvertently broke some 64-bit FLATMEM using configs with eg:
#     
#       arch/powerpc/include/asm/book3s/64/mmu-hash.h:584:6: error: "MAX_PHYSMEM_BITS" is not defined, evaluates to 0
#        #if (MAX_PHYSMEM_BITS > MAX_EA_BITS_PER_CONTEXT)
#             ^~~~~~~~~~~~~~~~
#     
#     Fix it by making sure we define MAX_PHYSMEM_BITS for all 64-bit
#     configs regardless of SPARSEMEM.
#     
#     Fixes: 8bc086899816 ("powerpc/mm: Only define MAX_PHYSMEM_BITS in SPARSEMEM configurations")
#     Reported-by: Andreas Schwab <schwab@linux-m68k.org>
#     Reported-by: Hugh Dickins <hughd@google.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-ld --version
# < git log --format=%s --max-count=1 8b62a2b95d17d0b7d12b059a8a6e287009300fca
# < make -s -j 10 ARCH=x86_64 O=/kisskb/build/powerpc-fixes_x86_64-allnoconfig_x86_64-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-  allnoconfig
# make -s -j 10 ARCH=x86_64 O=/kisskb/build/powerpc-fixes_x86_64-allnoconfig_x86_64-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-  
/kisskb/src/arch/x86/kernel/apic/io_apic.c: In function 'mp_map_pin_to_irq':
/kisskb/src/arch/x86/kernel/apic/io_apic.c:1036:6: warning: 'irq' 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:187:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/arch/x86/kernel/e820.c: In function 'e820__setup_pci_gap':
/kisskb/src/arch/x86/kernel/e820.c:651:16: warning: 'gapstart' may be used uninitialized in this function [-Wuninitialized]
Completed OK
# rm -rf /kisskb/build/powerpc-fixes_x86_64-allnoconfig_x86_64-gcc4.6
# Build took: 0:00:30.747286