# git rev-parse -q --verify 454099efd693c76a25d6326d2c5b1d7003b480f9^{commit}
# git fetch -q -n -f git://gitlab.ozlabs.ibm.com/linuxppc/linux.git fixes-test
warning: The last gc run reported the following. Please correct the root cause
and remove .git/gc.log.
Automatic cleanup will not be performed until the file is removed.

warning: There are too many unreachable loose objects; run 'git prune' to remove them.

# git rev-parse -q --verify 454099efd693c76a25d6326d2c5b1d7003b480f9^{commit}
454099efd693c76a25d6326d2c5b1d7003b480f9
# git checkout -q -f -B kisskb 454099efd693c76a25d6326d2c5b1d7003b480f9
# git clean -qxdf
# < git log -1
# commit 454099efd693c76a25d6326d2c5b1d7003b480f9
# Author: Christophe Leroy <christophe.leroy@c-s.fr>
# Date:   Fri Feb 14 06:53:00 2020 +0000
# 
#     powerpc/6xx: Fix power_save_ppc32_restore() with CONFIG_VMAP_STACK
#     
#     power_save_ppc32_restore() is called during exception entry, before
#     re-enabling the MMU. It substracts KERNELBASE from the address
#     of nap_save_msscr0 to access it.
#     
#     With CONFIG_VMAP_STACK enabled, data MMU translation has already been
#     re-enabled, so power_save_ppc32_restore() has to access
#     nap_save_msscr0 by its virtual address.
#     
#     Reported-by: Larry Finger <Larry.Finger@lwfinger.net>
#     Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
#     Fixes: cd08f109e262 ("powerpc/32s: Enable CONFIG_VMAP_STACK")
#     Tested-by: Larry Finger <Larry.Finger@lwfinger.net>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/7bce32ccbab3ba3e3e0f27da6961bf6313df97ed.1581663140.git.christophe.leroy@c-s.fr
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-ld --version
# < git log --format=%s --max-count=1 454099efd693c76a25d6326d2c5b1d7003b480f9
# < make -s -j 8 ARCH=x86_64 O=/kisskb/build/powerpc-fixes_x86_64-allnoconfig_x86_64-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-  allnoconfig
# make -s -j 8 ARCH=x86_64 O=/kisskb/build/powerpc-fixes_x86_64-allnoconfig_x86_64-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-  
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:204:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/arch/x86/kernel/apic/io_apic.c: In function 'mp_map_pin_to_irq':
/kisskb/src/arch/x86/kernel/apic/io_apic.c:1037:6: warning: 'irq' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/arch/x86/kernel/e820.c: In function 'e820__setup_pci_gap':
/kisskb/src/arch/x86/kernel/e820.c:665:16: warning: 'gapstart' may be used uninitialized in this function [-Wuninitialized]
Completed OK
# rm -rf /kisskb/build/powerpc-fixes_x86_64-allnoconfig_x86_64-gcc4.6
# Build took: 0:00:33.773365