# 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/gcc-4.6.3-nolibc/mips-linux/bin/mips-linux-gcc --version
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/mips-linux/bin/mips-linux-ld --version
# < git log --format=%s --max-count=1 736706bee3298208343a76096370e4f6a5c55915
# < make -s -j 80 ARCH=mips O=/kisskb/build/linus_malta_defconfig_mips CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/mips-linux/bin/mips-linux-  malta_defconfig
# make -s -j 80 ARCH=mips O=/kisskb/build/linus_malta_defconfig_mips CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/mips-linux/bin/mips-linux-  
/kisskb/src/arch/mips/vdso/Makefile:39: MIPS VDSO requires binutils >= 2.25
/kisskb/src/arch/mips/vdso/Makefile:39: MIPS VDSO requires binutils >= 2.25
/kisskb/src/kernel/rcu/srcutree.c: In function 'init_srcu_struct_fields':
/kisskb/src/kernel/rcu/srcutree.c:152:32: warning: 'levelspread[<U3be0>]' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/kernel/rcu/srcutree.c:100:6: note: 'levelspread[<U3be0>]' was declared here
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:186:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/base/regmap/regmap.c: In function 'regmap_raw_read':
/kisskb/src/drivers/base/regmap/regmap.c:2594:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/base/regmap/regmap.c: In function '_regmap_raw_write':
/kisskb/src/drivers/base/regmap/regmap.c:1855:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/proc/inode.c: In function 'proc_reg_open':
/kisskb/src/include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/proc/inode.c:339:21: note: 'pdeo' was declared here
/kisskb/src/drivers/tty/serial/8250/8250_core.c: In function 'univ8250_release_irq':
/kisskb/src/drivers/tty/serial/8250/8250_core.c:247:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/tty/serial/8250/8250_core.c:227:19: note: 'i' was declared here
/kisskb/src/net/bridge/br_netlink.c: In function 'br_afspec.isra.21':
/kisskb/src/net/bridge/br_netlink.c:652:7: warning: 'err' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/udf/unicode.c: In function 'udf_name_conv_char':
/kisskb/src/fs/udf/unicode.c:132:8: warning: 'c' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/mac80211/mlme.c: In function 'ieee80211_rx_mgmt_beacon':
/kisskb/src/net/mac80211/mlme.c:1522:3: warning: 'pwr_level_cisco' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/mac80211/mlme.c:1479:6: note: 'pwr_level_cisco' was declared here
/kisskb/src/drivers/net/tun.c: In function 'tun_get_user':
/kisskb/src/drivers/net/tun.c:1845:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/tun.c:1755:46: warning: 'linear' may be used uninitialized in this function [-Wuninitialized]
Completed OK
# rm -rf /kisskb/build/linus_malta_defconfig_mips
# Build took: 0:01:43.078581