# git rev-parse -q --verify b12483618d73c954c00faa49c276b4d9995fb95a^{commit}
b12483618d73c954c00faa49c276b4d9995fb95a
already have revision, skipping fetch
# git checkout -q -f -B kisskb b12483618d73c954c00faa49c276b4d9995fb95a
# git clean -qxdf
# < git log -1
# commit b12483618d73c954c00faa49c276b4d9995fb95a
# Author: Michael Ellerman <mpe@ellerman.id.au>
# Date:   Thu Feb 18 23:30:58 2021 +1100
# 
#     powerpc/4xx: Fix build errors from mfdcr()
#     
#     lkp reported a build error in fsp2.o:
#     
#       CC      arch/powerpc/platforms/44x/fsp2.o
#       {standard input}:577: Error: unsupported relocation against base
#     
#     Which comes from:
#     
#       pr_err("GESR0: 0x%08x\n", mfdcr(base + PLB4OPB_GESR0));
#     
#     Where our mfdcr() macro is stringifying "base + PLB4OPB_GESR0", and
#     passing that to the assembler, which obviously doesn't work.
#     
#     The mfdcr() macro already checks that the argument is constant using
#     __builtin_constant_p(), and if not calls the out-of-line version of
#     mfdcr(). But in this case GCC is smart enough to notice that "base +
#     PLB4OPB_GESR0" will be constant, even though it's not something we can
#     immediately stringify into a register number.
#     
#     Segher pointed out that passing the register number to the inline asm
#     as a constant would be better, and in fact it fixes the build error,
#     presumably because it gives GCC a chance to resolve the value.
#     
#     While we're at it, change mtdcr() similarly.
#     
#     Reported-by: kernel test robot <lkp@intel.com>
#     Suggested-by: Segher Boessenkool <segher@kernel.crashing.org>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Acked-by: Feng Tang <feng.tang@intel.com>
#     Link: https://lore.kernel.org/r/20210218123058.748882-1-mpe@ellerman.id.au
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/ia64-linux/bin/ia64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/ia64-linux/bin/ia64-linux-ld --version
# < git log --format=%s --max-count=1 b12483618d73c954c00faa49c276b4d9995fb95a
# < make -s -j 48 ARCH=ia64 O=/kisskb/build/powerpc-next_ia64-defconfig_ia64-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/ia64-linux/bin/ia64-linux-  defconfig
arch/ia64/configs/generic_defconfig:58:warning: override: reassigning to symbol ATA
arch/ia64/configs/generic_defconfig:59:warning: override: reassigning to symbol ATA_PIIX
# < make -s -j 48 ARCH=ia64 O=/kisskb/build/powerpc-next_ia64-defconfig_ia64-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/ia64-linux/bin/ia64-linux-  help
# make -s -j 48 ARCH=ia64 O=/kisskb/build/powerpc-next_ia64-defconfig_ia64-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/ia64-linux/bin/ia64-linux-  olddefconfig
# make -s -j 48 ARCH=ia64 O=/kisskb/build/powerpc-next_ia64-defconfig_ia64-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/ia64-linux/bin/ia64-linux-  
<stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp]
In file included from /kisskb/src/include/linux/numa.h:25:0,
                 from /kisskb/src/include/linux/async.h:13,
                 from /kisskb/src/kernel/async.c:47:
/kisskb/src/arch/ia64/include/asm/sparsemem.h:14:40: warning: "PAGE_SHIFT" is not defined [-Wundef]
 #if ((CONFIG_FORCE_MAX_ZONEORDER - 1 + PAGE_SHIFT) > SECTION_SIZE_BITS)
                                        ^
In file included from /kisskb/src/include/linux/gfp.h:6:0,
                 from /kisskb/src/include/linux/xarray.h:14,
                 from /kisskb/src/include/linux/radix-tree.h:19,
                 from /kisskb/src/include/linux/idr.h:15,
                 from /kisskb/src/include/linux/kernfs.h:13,
                 from /kisskb/src/include/linux/sysfs.h:16,
                 from /kisskb/src/include/linux/kobject.h:20,
                 from /kisskb/src/include/linux/energy_model.h:7,
                 from /kisskb/src/include/linux/device.h:16,
                 from /kisskb/src/include/linux/async.h:14,
                 from /kisskb/src/kernel/async.c:47:
/kisskb/src/include/linux/mmzone.h:1156:2: error: #error Allocator MAX_ORDER exceeds SECTION_SIZE
 #error Allocator MAX_ORDER exceeds SECTION_SIZE
  ^
make[2]: *** [/kisskb/src/scripts/Makefile.build:279: kernel/async.o] Error 1
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [/kisskb/src/Makefile:1805: kernel] Error 2
make[1]: *** Waiting for unfinished jobs....
In file included from /kisskb/src/include/linux/numa.h:25:0,
                 from /kisskb/src/include/linux/async.h:13,
                 from /kisskb/src/drivers/acpi/battery.c:13:
/kisskb/src/arch/ia64/include/asm/sparsemem.h:14:40: warning: "PAGE_SHIFT" is not defined [-Wundef]
 #if ((CONFIG_FORCE_MAX_ZONEORDER - 1 + PAGE_SHIFT) > SECTION_SIZE_BITS)
                                        ^
In file included from /kisskb/src/include/linux/gfp.h:6:0,
                 from /kisskb/src/include/linux/xarray.h:14,
                 from /kisskb/src/include/linux/radix-tree.h:19,
                 from /kisskb/src/include/linux/idr.h:15,
                 from /kisskb/src/include/linux/kernfs.h:13,
                 from /kisskb/src/include/linux/sysfs.h:16,
                 from /kisskb/src/include/linux/kobject.h:20,
                 from /kisskb/src/include/linux/energy_model.h:7,
                 from /kisskb/src/include/linux/device.h:16,
                 from /kisskb/src/include/linux/async.h:14,
                 from /kisskb/src/drivers/acpi/battery.c:13:
/kisskb/src/include/linux/mmzone.h:1156:2: error: #error Allocator MAX_ORDER exceeds SECTION_SIZE
 #error Allocator MAX_ORDER exceeds SECTION_SIZE
  ^
In file included from /kisskb/src/include/linux/numa.h:25:0,
                 from /kisskb/src/include/linux/nodemask.h:96,
                 from /kisskb/src/lib/nodemask.c:2:
/kisskb/src/arch/ia64/include/asm/sparsemem.h:14:40: warning: "PAGE_SHIFT" is not defined [-Wundef]
 #if ((CONFIG_FORCE_MAX_ZONEORDER - 1 + PAGE_SHIFT) > SECTION_SIZE_BITS)
                                        ^
In file included from /kisskb/src/include/linux/gfp.h:6:0,
                 from /kisskb/src/include/linux/umh.h:4,
                 from /kisskb/src/include/linux/kmod.h:9,
                 from /kisskb/src/include/linux/module.h:16,
                 from /kisskb/src/lib/nodemask.c:3:
/kisskb/src/include/linux/mmzone.h:1156:2: error: #error Allocator MAX_ORDER exceeds SECTION_SIZE
 #error Allocator MAX_ORDER exceeds SECTION_SIZE
  ^
make[3]: *** [/kisskb/src/scripts/Makefile.build:279: drivers/acpi/battery.o] Error 1
make[3]: *** Waiting for unfinished jobs....
make[2]: *** [/kisskb/src/scripts/Makefile.build:279: lib/nodemask.o] Error 1
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [/kisskb/src/Makefile:1805: lib] Error 2
In file included from /kisskb/src/include/linux/numa.h:25:0,
                 from /kisskb/src/include/linux/async.h:13,
                 from /kisskb/src/drivers/base/bus.c:11:
/kisskb/src/arch/ia64/include/asm/sparsemem.h:14:40: warning: "PAGE_SHIFT" is not defined [-Wundef]
 #if ((CONFIG_FORCE_MAX_ZONEORDER - 1 + PAGE_SHIFT) > SECTION_SIZE_BITS)
                                        ^
In file included from /kisskb/src/include/linux/gfp.h:6:0,
                 from /kisskb/src/include/linux/xarray.h:14,
                 from /kisskb/src/include/linux/radix-tree.h:19,
                 from /kisskb/src/include/linux/idr.h:15,
                 from /kisskb/src/include/linux/kernfs.h:13,
                 from /kisskb/src/include/linux/sysfs.h:16,
                 from /kisskb/src/include/linux/kobject.h:20,
                 from /kisskb/src/include/linux/energy_model.h:7,
                 from /kisskb/src/include/linux/device.h:16,
                 from /kisskb/src/include/linux/async.h:14,
                 from /kisskb/src/drivers/base/bus.c:11:
/kisskb/src/include/linux/mmzone.h:1156:2: error: #error Allocator MAX_ORDER exceeds SECTION_SIZE
 #error Allocator MAX_ORDER exceeds SECTION_SIZE
  ^
make[3]: *** [/kisskb/src/scripts/Makefile.build:279: drivers/base/bus.o] Error 1
make[3]: *** Waiting for unfinished jobs....
make[2]: *** [/kisskb/src/scripts/Makefile.build:496: drivers/base] Error 2
make[2]: *** Waiting for unfinished jobs....
In file included from /kisskb/src/arch/ia64/include/uapi/asm/intrinsics.h:22:0,
                 from /kisskb/src/arch/ia64/include/asm/intrinsics.h:11,
                 from /kisskb/src/arch/ia64/include/asm/timex.h:14,
                 from /kisskb/src/include/linux/timex.h:65,
                 from /kisskb/src/include/linux/time32.h:13,
                 from /kisskb/src/include/linux/time.h:60,
                 from /kisskb/src/fs/nfs/read.c:11:
/kisskb/src/fs/nfs/read.c: In function 'nfs_read_completion':
/kisskb/src/arch/ia64/include/uapi/asm/cmpxchg.h:57:2: warning: value computed is not used [-Wunused-value]
 ((__typeof__(*(ptr))) __xchg((unsigned long) (x), (ptr), sizeof(*(ptr))))
  ^
/kisskb/src/fs/nfs/read.c:196:5: note: in expansion of macro 'xchg'
     xchg(&nfs_req_openctx(req)->error, error);
     ^
/kisskb/src/fs/nfs/read.c: In function 'nfs_readpage':
/kisskb/src/arch/ia64/include/uapi/asm/cmpxchg.h:57:2: warning: value computed is not used [-Wunused-value]
 ((__typeof__(*(ptr))) __xchg((unsigned long) (x), (ptr), sizeof(*(ptr))))
  ^
/kisskb/src/fs/nfs/read.c:355:2: note: in expansion of macro 'xchg'
  xchg(&ctx->error, 0);
  ^
In file included from /kisskb/src/include/linux/numa.h:25:0,
                 from /kisskb/src/include/linux/nodemask.h:96,
                 from /kisskb/src/include/linux/mount.h:15,
                 from /kisskb/src/fs/pnode.c:9:
/kisskb/src/arch/ia64/include/asm/sparsemem.h:14:40: warning: "PAGE_SHIFT" is not defined [-Wundef]
 #if ((CONFIG_FORCE_MAX_ZONEORDER - 1 + PAGE_SHIFT) > SECTION_SIZE_BITS)
                                        ^
In file included from /kisskb/src/include/linux/gfp.h:6:0,
                 from /kisskb/src/include/linux/xarray.h:14,
                 from /kisskb/src/include/linux/radix-tree.h:19,
                 from /kisskb/src/include/linux/fs.h:15,
                 from /kisskb/src/fs/pnode.c:10:
/kisskb/src/include/linux/mmzone.h:1156:2: error: #error Allocator MAX_ORDER exceeds SECTION_SIZE
 #error Allocator MAX_ORDER exceeds SECTION_SIZE
  ^
In file included from /kisskb/src/include/linux/numa.h:25:0,
                 from /kisskb/src/include/linux/nodemask.h:96,
                 from /kisskb/src/include/linux/mount.h:15,
                 from /kisskb/src/fs/utimes.c:3:
/kisskb/src/arch/ia64/include/asm/sparsemem.h:14:40: warning: "PAGE_SHIFT" is not defined [-Wundef]
 #if ((CONFIG_FORCE_MAX_ZONEORDER - 1 + PAGE_SHIFT) > SECTION_SIZE_BITS)
                                        ^
make[2]: *** [/kisskb/src/scripts/Makefile.build:279: fs/pnode.o] Error 1
make[2]: *** Waiting for unfinished jobs....
In file included from /kisskb/src/include/linux/gfp.h:6:0,
                 from /kisskb/src/include/linux/xarray.h:14,
                 from /kisskb/src/include/linux/radix-tree.h:19,
                 from /kisskb/src/include/linux/fs.h:15,
                 from /kisskb/src/include/linux/namei.h:5,
                 from /kisskb/src/fs/utimes.c:4:
/kisskb/src/include/linux/mmzone.h:1156:2: error: #error Allocator MAX_ORDER exceeds SECTION_SIZE
 #error Allocator MAX_ORDER exceeds SECTION_SIZE
  ^
make[2]: *** [/kisskb/src/scripts/Makefile.build:279: fs/utimes.o] Error 1
make[1]: *** [/kisskb/src/Makefile:1805: fs] Error 2
make[2]: *** [/kisskb/src/scripts/Makefile.build:496: drivers/acpi] Error 2
make[1]: *** [/kisskb/src/Makefile:1805: drivers] Error 2
make: *** [Makefile:185: __sub-make] Error 2
Command 'make -s -j 48 ARCH=ia64 O=/kisskb/build/powerpc-next_ia64-defconfig_ia64-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/ia64-linux/bin/ia64-linux-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/powerpc-next_ia64-defconfig_ia64-gcc4.9
# Build took: 0:01:44.254510