# git rev-parse -q --verify 16d83a540ca4e7f1ebb2b3756869b77451d31414^{commit}
16d83a540ca4e7f1ebb2b3756869b77451d31414
already have revision, skipping fetch
# git checkout -q -f -B kisskb 16d83a540ca4e7f1ebb2b3756869b77451d31414
# git clean -qxdf
# < git log -1
# commit 16d83a540ca4e7f1ebb2b3756869b77451d31414
# Author: Pratik Rajesh Sampat <psampat@linux.ibm.com>
# Date:   Wed Aug 26 13:59:18 2020 +0530
# 
#     Revert "powerpc/powernv/idle: Replace CPU feature check with PVR check"
#     
#     cpuidle stop state implementation has minor optimizations for P10
#     where hardware preserves more SPR registers compared to P9. The
#     current P9 driver works for P10, although does few extra
#     save-restores. P9 driver can provide the required power management
#     features like SMT thread folding and core level power savings on a P10
#     platform.
#     
#     Until the P10 stop driver is available, revert the commit which allows
#     for only P9 systems to utilize cpuidle and blocks all idle stop states
#     for P10. CPU idle states are enabled and tested on the P10 platform
#     with this fix.
#     
#     This reverts commit 8747bf36f312356f8a295a0c39ff092d65ce75ae.
#     
#     Fixes: 8747bf36f312 ("powerpc/powernv/idle: Replace CPU feature check with PVR check")
#     Signed-off-by: Pratik Rajesh Sampat <psampat@linux.ibm.com>
#     Reviewed-by: Vaidyanathan Srinivasan <svaidy@linux.ibm.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/20200826082918.89306-1-psampat@linux.ibm.com
# < /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 16d83a540ca4e7f1ebb2b3756869b77451d31414
# < make -s -j 48 ARCH=ia64 O=/kisskb/build/powerpc-fixes_ia64-defconfig_ia64-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/ia64-linux/bin/ia64-linux-  defconfig
# < make -s -j 48 ARCH=ia64 O=/kisskb/build/powerpc-fixes_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-fixes_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-fixes_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 22420 functions.
Completed OK
# rm -rf /kisskb/build/powerpc-fixes_ia64-defconfig_ia64-gcc4.9
# Build took: 0:02:16.088083