# git rev-parse -q --verify 736706bee3298208343a76096370e4f6a5c55915^{commit}
736706bee3298208343a76096370e4f6a5c55915
already have revision, skipping fetch
# git checkout -q -f -B kisskb 736706bee3298208343a76096370e4f6a5c55915
# git clean -qxdf
# < git log -1
# commit 736706bee3298208343a76096370e4f6a5c55915
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Mon Mar 4 10:39:05 2019 -0800
# 
#     get rid of legacy 'get_ds()' function
#     
#     Every in-kernel use of this function defined it to KERNEL_DS (either as
#     an actual define, or as an inline function).  It's an entirely
#     historical artifact, and long long long ago used to actually read the
#     segment selector valueof '%ds' on x86.
#     
#     Which in the kernel is always KERNEL_DS.
#     
#     Inspired by a patch from Jann Horn that just did this for a very small
#     subset of users (the ones in fs/), along with Al who suggested a script.
#     I then just took it to the logical extreme and removed all the remaining
#     gunk.
#     
#     Roughly scripted with
#     
#        git grep -l '(get_ds())' -- :^tools/ | xargs sed -i 's/(get_ds())/(KERNEL_DS)/'
#        git grep -lw 'get_ds' -- :^tools/ | xargs sed -i '/^#define get_ds()/d'
#     
#     plus manual fixups to remove a few unusual usage patterns, the couple of
#     inline function cases and to fix up a comment that had become stale.
#     
#     The 'get_ds()' function remains in an x86 kvm selftest, since in user
#     space it actually does something relevant.
#     
#     Inspired-by: Jann Horn <jannh@google.com>
#     Inspired-by: Al Viro <viro@zeniv.linux.org.uk>
#     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
# < /opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-gcc --version
# < /opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-ld --version
# < git log --format=%s --max-count=1 736706bee3298208343a76096370e4f6a5c55915
# < make -s -j 120 ARCH=sparc64 O=/kisskb/build/linus_sparc64-allmodconfig_sparc64 CROSS_COMPILE=/opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-  allmodconfig
# Added to kconfig CONFIG_BUILD_DOCSRC=n
# Added to kconfig CONFIG_HAVE_FTRACE_MCOUNT_RECORD=n
# Added to kconfig CONFIG_SAMPLES=n
# Added to kconfig CONFIG_MODULE_SIG=n
# yes \n | make -s -j 120 ARCH=sparc64 O=/kisskb/build/linus_sparc64-allmodconfig_sparc64 CROSS_COMPILE=/opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-  oldconfig
yes: standard output: Broken pipe
# make -s -j 120 ARCH=sparc64 O=/kisskb/build/linus_sparc64-allmodconfig_sparc64 CROSS_COMPILE=/opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-  
<stdin>:1336:2: warning: #warning syscall rseq not implemented [-Wcpp]
/kisskb/src/drivers/input/joystick/analog.c:172:2: warning: #warning Precise timer not defined for this architecture. [-Wcpp]
 #warning Precise timer not defined for this architecture.
  ^
In file included from /kisskb/src/include/linux/rwsem.h:16:0,
                 from /kisskb/src/include/linux/notifier.h:15,
                 from /kisskb/src/include/linux/clk.h:17,
                 from /kisskb/src/drivers/tty/serial/sh-sci.c:24:
/kisskb/src/drivers/tty/serial/sh-sci.c: In function 'sci_submit_rx':
/kisskb/src/include/linux/spinlock.h:279:3: warning: 'flags' may be used uninitialized in this function [-Wmaybe-uninitialized]
   _raw_spin_unlock_irqrestore(lock, flags); \
   ^
/kisskb/src/drivers/tty/serial/sh-sci.c:1338:16: note: 'flags' was declared here
  unsigned long flags;
                ^
/kisskb/src/drivers/scsi/myrs.c: In function 'myrs_log_event':
/kisskb/src/drivers/scsi/myrs.c:821:24: warning: 'sshdr.sense_key' may be used uninitialized in this function [-Wmaybe-uninitialized]
  struct scsi_sense_hdr sshdr;
                        ^
  kernel: arch/sparc/boot/image is ready
  kernel: arch/sparc/boot/zImage is ready
Completed OK
# rm -rf /kisskb/build/linus_sparc64-allmodconfig_sparc64
# Build took: 0:06:13.926419