# git rev-parse -q --verify 3a7e02c040b130b5545e4b115aada7bacd80a2b6^{commit}
3a7e02c040b130b5545e4b115aada7bacd80a2b6
already have revision, skipping fetch
# git checkout -q -f -B kisskb 3a7e02c040b130b5545e4b115aada7bacd80a2b6
# git clean -qxdf
# < git log -1
# commit 3a7e02c040b130b5545e4b115aada7bacd80a2b6
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Fri Jul 26 15:32:27 2024 -0700
# 
#     minmax: avoid overly complicated constant expressions in VM code
#     
#     The minmax infrastructure is overkill for simple constants, and can
#     cause huge expansions because those simple constants are then used by
#     other things.
#     
#     For example, 'pageblock_order' is a core VM constant, but because it was
#     implemented using 'min_t()' and all the type-checking that involves, it
#     actually expanded to something like 2.5kB of preprocessor noise.
#     
#     And when that simple constant was then used inside other expansions:
#     
#       #define pageblock_nr_pages      (1UL << pageblock_order)
#       #define pageblock_start_pfn(pfn)  ALIGN_DOWN((pfn), pageblock_nr_pages)
#     
#     and we then use that inside a 'max()' macro:
#     
#             case ISOLATE_SUCCESS:
#                     update_cached = false;
#                     last_migrated_pfn = max(cc->zone->zone_start_pfn,
#                             pageblock_start_pfn(cc->migrate_pfn - 1));
#     
#     the end result was that one statement expanding to 253kB in size.
#     
#     There are probably other cases of this, but this one case certainly
#     stood out.
#     
#     I've added 'MIN_T()' and 'MAX_T()' macros for this kind of "core simple
#     constant with specific type" use.  These macros skip the type checking,
#     and as such need to be very sparingly used only for obvious cases that
#     have active issues like this.
#     
#     Reported-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
#     Link: https://lore.kernel.org/all/36aa2cad-1db1-4abf-8dd2-fb20484aabc3@lucifer.local/
#     Cc: David Laight <David.Laight@aculab.com>
#     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
# < /opt/cross/kisskb/korg/gcc-13.1.0-nolibc/sh4-linux/bin/sh4-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-13.1.0-nolibc/sh4-linux/bin/sh4-linux-ld --version
# < git log --format=%s --max-count=1 3a7e02c040b130b5545e4b115aada7bacd80a2b6
# make -s -j 160 ARCH=sh O=/kisskb/build/linus_allmodconfig_sh4-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/sh4-linux/bin/sh4-linux-  allmodconfig
# Added to kconfig CONFIG_BUILD_DOCSRC=n
# Added to kconfig CONFIG_MODULE_SIG=n
# Added to kconfig CONFIG_SAMPLES=n
# < make -s -j 160 ARCH=sh O=/kisskb/build/linus_allmodconfig_sh4-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/sh4-linux/bin/sh4-linux-  help
# make -s -j 160 ARCH=sh O=/kisskb/build/linus_allmodconfig_sh4-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/sh4-linux/bin/sh4-linux-  olddefconfig
# make -s -j 160 ARCH=sh O=/kisskb/build/linus_allmodconfig_sh4-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/sh4-linux/bin/sh4-linux-  
  Generating include/generated/machtypes.h
<stdin>:1519:2: warning: #warning syscall clone3 not implemented [-Wcpp]
/kisskb/src/arch/sh/kernel/cpu/sh2/../../entry-common.S: Assembler messages:
/kisskb/src/arch/sh/kernel/cpu/sh2/../../entry-common.S:85: Warning: overflow in branch to __restore_all; converted into longer instruction sequence
/kisskb/src/arch/sh/kernel/cpu/sh2/../../entry-common.S:357: Warning: overflow in branch to syscall_exit_work; converted into longer instruction sequence
/kisskb/src/arch/sh/kernel/cpu/sh2/../../entry-common.S:360: Warning: overflow in branch to syscall_exit_work; converted into longer instruction sequence
/kisskb/src/kernel/fork.c: In function '__do_sys_clone3':
/kisskb/src/kernel/fork.c:3072:2: error: #warning clone3() entry point is missing, please fix [-Werror=cpp]
 3072 | #warning clone3() entry point is missing, please fix
      |  ^~~~~~~
cc1: all warnings being treated as errors
make[4]: *** [/kisskb/src/scripts/Makefile.build:244: kernel/fork.o] Error 1
make[4]: *** Waiting for unfinished jobs....
make[3]: *** [/kisskb/src/scripts/Makefile.build:485: kernel] Error 2
make[3]: *** Waiting for unfinished jobs....
{standard input}: Assembler messages:
{standard input}: Warning: end of file not at end of a line; newline inserted
{standard input}:1111: Error: unknown pseudo-op: `.l18'
{standard input}: Error: open CFI at the end of file; missing .cfi_endproc directive
{standard input}:1070: Error: displacement to undefined symbol .L142 overflows 8-bit field 
{standard input}:1075: Error: displacement to undefined symbol .L161 overflows 8-bit field 
{standard input}:1059: Error: pcrel too far
{standard input}:1060: Error: pcrel too far
{standard input}:1061: Error: pcrel too far
sh4-linux-gcc: internal compiler error: Segmentation fault signal terminated program cc1
Please submit a full bug report, with preprocessed source (by using -freport-bug).
See <https://gcc.gnu.org/bugs/> for instructions.
make[6]: *** [/kisskb/src/scripts/Makefile.build:244: drivers/net/pcs/pcs-xpcs.o] Error 4
make[6]: *** Waiting for unfinished jobs....
make[5]: *** [/kisskb/src/scripts/Makefile.build:485: drivers/net/pcs] Error 2
make[5]: *** Waiting for unfinished jobs....
make[4]: *** [/kisskb/src/scripts/Makefile.build:485: drivers/net] Error 2
make[4]: *** Waiting for unfinished jobs....
{standard input}: Assembler messages:
{standard input}: Warning: end of file not at end of a line; newline inserted
{standard input}:1270: Error: unknown pseudo-op: `.al'
{standard input}: Error: open CFI at the end of file; missing .cfi_endproc directive
{standard input}:1254: Error: pcrel too far
{standard input}:1255: Error: pcrel too far
sh4-linux-gcc: internal compiler error: Segmentation fault signal terminated program cc1
Please submit a full bug report, with preprocessed source (by using -freport-bug).
See <https://gcc.gnu.org/bugs/> for instructions.
make[6]: *** [/kisskb/src/scripts/Makefile.build:244: drivers/hwmon/pmbus/mp2975.o] Error 4
make[6]: *** Waiting for unfinished jobs....
make[5]: *** [/kisskb/src/scripts/Makefile.build:485: drivers/hwmon/pmbus] Error 2
make[5]: *** Waiting for unfinished jobs....
make[4]: *** [/kisskb/src/scripts/Makefile.build:485: drivers/hwmon] Error 2
make[3]: *** [/kisskb/src/scripts/Makefile.build:485: drivers] Error 2
make[2]: *** [/kisskb/src/Makefile:1926: .] Error 2
make[1]: *** [/kisskb/src/Makefile:224: __sub-make] Error 2
make: *** [Makefile:224: __sub-make] Error 2
Command 'make -s -j 160 ARCH=sh O=/kisskb/build/linus_allmodconfig_sh4-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/sh4-linux/bin/sh4-linux-  ' returned non-zero exit status 2.
# rm -rf /kisskb/build/linus_allmodconfig_sh4-gcc13
# Build took: 0:07:29.989280