# git rev-parse -q --verify db972a3787d12b1ce9ba7a31ec376d8a79e04c47^{commit}
db972a3787d12b1ce9ba7a31ec376d8a79e04c47
already have revision, skipping fetch
# git checkout -q -f -B kisskb db972a3787d12b1ce9ba7a31ec376d8a79e04c47
# git clean -qxdf
# < git log -1
# commit db972a3787d12b1ce9ba7a31ec376d8a79e04c47
# Author: Christophe Leroy <christophe.leroy@csgroup.eu>
# Date:   Tue Dec 8 05:24:19 2020 +0000
# 
#     powerpc/powermac: Fix low_sleep_handler with CONFIG_VMAP_STACK
#     
#     low_sleep_handler() can't restore the context from standard
#     stack because the stack can hardly be accessed with MMU OFF.
#     
#     Store everything in a global storage area instead of storing
#     a pointer to the stack in that global storage area.
#     
#     To avoid a complete churn of the function, still use r1 as
#     the pointer to the storage area during restore.
#     
#     Fixes: cd08f109e262 ("powerpc/32s: Enable CONFIG_VMAP_STACK")
#     Reported-by: Giuseppe Sacco <giuseppe@sguazz.it>
#     Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
#     Tested-by: Giuseppe Sacco <giuseppe@sguazz.it>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/e3e0d8042a3ba75cb4a9546c19c408b5b5b28994.1607404931.git.christophe.leroy@csgroup.eu
# < /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 db972a3787d12b1ce9ba7a31ec376d8a79e04c47
# < 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/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:73,
                 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);
  ^
No errors detected in 22326 functions.
Completed OK
# rm -rf /kisskb/build/powerpc-next_ia64-defconfig_ia64-gcc4.9
# Build took: 0:02:17.035394