# git rev-parse -q --verify 14d7c92f8df9c0964ae6f8b813c1b3ac38120825^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/linus master
# git rev-parse -q --verify 14d7c92f8df9c0964ae6f8b813c1b3ac38120825^{commit}
14d7c92f8df9c0964ae6f8b813c1b3ac38120825
# git checkout -q -f -B kisskb 14d7c92f8df9c0964ae6f8b813c1b3ac38120825
# git clean -qxdf
# < git log -1
# commit 14d7c92f8df9c0964ae6f8b813c1b3ac38120825
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Mon Jun 17 12:57:03 2024 -0700
# 
#     Revert "mm: mmap: allow for the maximum number of bits for randomizing mmap_base by default"
#     
#     This reverts commit 3afb76a66b5559a7b595155803ce23801558a7a9.
#     
#     This was a wrongheaded workaround for an issue that had already been
#     fixed much better by commit 4ef9ad19e176 ("mm: huge_memory: don't force
#     huge page alignment on 32 bit").
#     
#     Asking users questions at kernel compile time that they can't make sense
#     of is not a viable strategy.  And the fact that even the kernel VM
#     maintainers apparently didn't catch that this "fix" is not a fix any
#     more pretty much proves the point that people can't be expected to
#     understand the implications of the question.
#     
#     It may well be the case that we could improve things further, and that
#     __thp_get_unmapped_area() should take the mapping randomization into
#     account even for 64-bit kernels.  Maybe we should not be so eager to use
#     THP mappings.
#     
#     But in no case should this be a kernel config option.
#     
#     Cc: Rafael Aquini <aquini@redhat.com>
#     Cc: Andrew Morton <akpm@linux-foundation.org>
#     Cc: Jiri Slaby <jirislaby@kernel.org>
#     Cc: Suren Baghdasaryan <surenb@google.com>
#     Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
#     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
# < /opt/cross/kisskb/korg/gcc-13.1.0-nolibc/sparc64-linux/bin/sparc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-13.1.0-nolibc/sparc64-linux/bin/sparc64-linux-ld --version
# < git log --format=%s --max-count=1 14d7c92f8df9c0964ae6f8b813c1b3ac38120825
# make -s -j 160 ARCH=sparc64 O=/kisskb/build/linus_allmodconfig_sparc64-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/sparc64-linux/bin/sparc64-linux-  allmodconfig
# < make -s -j 160 ARCH=sparc64 O=/kisskb/build/linus_allmodconfig_sparc64-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/sparc64-linux/bin/sparc64-linux-  help
# make -s -j 160 ARCH=sparc64 O=/kisskb/build/linus_allmodconfig_sparc64-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/sparc64-linux/bin/sparc64-linux-  olddefconfig
# make -s -j 160 ARCH=sparc64 O=/kisskb/build/linus_allmodconfig_sparc64-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/sparc64-linux/bin/sparc64-linux-  
<stdin>:1519:2: warning: #warning syscall clone3 not implemented [-Wcpp]
/kisskb/src/arch/sparc/prom/p1275.c:52:6: error: no previous prototype for 'prom_cif_init' [-Werror=missing-prototypes]
   52 | void prom_cif_init(void *cif_handler, void *cif_stack)
      |      ^~~~~~~~~~~~~
cc1: all warnings being treated as errors
make[4]: *** [/kisskb/src/scripts/Makefile.build:244: arch/sparc/prom/p1275.o] Error 1
make[4]: *** Waiting for unfinished jobs....
/kisskb/src/arch/sparc/prom/misc_64.c:165:5: error: no previous prototype for 'prom_get_mmu_ihandle' [-Werror=missing-prototypes]
  165 | int prom_get_mmu_ihandle(void)
      |     ^~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
make[4]: *** [/kisskb/src/scripts/Makefile.build:244: arch/sparc/prom/misc_64.o] Error 1
make[3]: *** [/kisskb/src/scripts/Makefile.build:485: arch/sparc/prom] Error 2
make[3]: *** Waiting for unfinished jobs....
/kisskb/src/arch/sparc/power/hibernate.c:22:5: error: no previous prototype for 'pfn_is_nosave' [-Werror=missing-prototypes]
   22 | int pfn_is_nosave(unsigned long pfn)
      |     ^~~~~~~~~~~~~
/kisskb/src/arch/sparc/power/hibernate.c:30:6: error: no previous prototype for 'save_processor_state' [-Werror=missing-prototypes]
   30 | void save_processor_state(void)
      |      ^~~~~~~~~~~~~~~~~~~~
/kisskb/src/arch/sparc/power/hibernate.c:35:6: error: no previous prototype for 'restore_processor_state' [-Werror=missing-prototypes]
   35 | void restore_processor_state(void)
      |      ^~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
make[4]: *** [/kisskb/src/scripts/Makefile.build:244: arch/sparc/power/hibernate.o] Error 1
make[3]: *** [/kisskb/src/scripts/Makefile.build:485: arch/sparc/power] Error 2
/kisskb/src/arch/sparc/vdso/vclock_gettime.c:254:1: error: no previous prototype for '__vdso_clock_gettime' [-Werror=missing-prototypes]
  254 | __vdso_clock_gettime(clockid_t clock, struct __kernel_old_timespec *ts)
      | ^~~~~~~~~~~~~~~~~~~~
/kisskb/src/arch/sparc/vdso/vclock_gettime.c:282:1: error: no previous prototype for '__vdso_clock_gettime_stick' [-Werror=missing-prototypes]
  282 | __vdso_clock_gettime_stick(clockid_t clock, struct __kernel_old_timespec *ts)
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~
/kisskb/src/arch/sparc/vdso/vclock_gettime.c:307:1: error: no previous prototype for '__vdso_gettimeofday' [-Werror=missing-prototypes]
  307 | __vdso_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz)
      | ^~~~~~~~~~~~~~~~~~~
/kisskb/src/arch/sparc/vdso/vclock_gettime.c:343:1: error: no previous prototype for '__vdso_gettimeofday_stick' [-Werror=missing-prototypes]
  343 | __vdso_gettimeofday_stick(struct __kernel_old_timeval *tv, struct timezone *tz)
      | ^~~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
make[5]: *** [/kisskb/src/scripts/Makefile.build:244: arch/sparc/vdso/vclock_gettime.o] Error 1
make[4]: *** [/kisskb/src/scripts/Makefile.build:485: arch/sparc/vdso] Error 2
make[4]: *** Waiting for unfinished jobs....
In file included from /kisskb/src/arch/sparc/include/asm/floppy.h:5,
                 from /kisskb/src/drivers/block/floppy.c:250:
/kisskb/src/arch/sparc/include/asm/floppy_64.h:200:13: error: no previous prototype for 'sparc_floppy_irq' [-Werror=missing-prototypes]
  200 | irqreturn_t sparc_floppy_irq(int irq, void *dev_cookie)
      |             ^~~~~~~~~~~~~~~~
/kisskb/src/arch/sparc/include/asm/floppy_64.h:437:6: error: no previous prototype for 'sun_pci_fd_dma_callback' [-Werror=missing-prototypes]
  437 | void sun_pci_fd_dma_callback(struct ebus_dma_info *p, int event, void *cookie)
      |      ^~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
make[5]: *** [/kisskb/src/scripts/Makefile.build:244: drivers/block/floppy.o] Error 1
make[5]: *** Waiting for unfinished jobs....
make[4]: *** [/kisskb/src/scripts/Makefile.build:485: drivers/block] Error 2
make[4]: *** Waiting for unfinished jobs....
make[3]: *** [/kisskb/src/scripts/Makefile.build:485: arch/sparc] Error 2
make[3]: *** [/kisskb/src/scripts/Makefile.build:485: drivers] Error 2
make[2]: *** [/kisskb/src/Makefile:1934: .] Error 2
make[1]: *** [/kisskb/src/Makefile:240: __sub-make] Error 2
make: *** [Makefile:240: __sub-make] Error 2
Command 'make -s -j 160 ARCH=sparc64 O=/kisskb/build/linus_allmodconfig_sparc64-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/sparc64-linux/bin/sparc64-linux-  ' returned non-zero exit status 2.
# rm -rf /kisskb/build/linus_allmodconfig_sparc64-gcc13
# Build took: 0:07:15.020669