# git rev-parse -q --verify 92edf8df0ff2ae86cc632eeca0e651fd8431d40d^{commit}
92edf8df0ff2ae86cc632eeca0e651fd8431d40d
already have revision, skipping fetch
# git checkout -q -f -B kisskb 92edf8df0ff2ae86cc632eeca0e651fd8431d40d
# git clean -qxdf
# < git log -1
# commit 92edf8df0ff2ae86cc632eeca0e651fd8431d40d
# Author: Michael Ellerman <mpe@ellerman.id.au>
# Date:   Thu Mar 21 15:24:33 2019 +1100
# 
#     powerpc/security: Fix spectre_v2 reporting
#     
#     When I updated the spectre_v2 reporting to handle software count cache
#     flush I got the logic wrong when there's no software count cache
#     enabled at all.
#     
#     The result is that on systems with the software count cache flush
#     disabled we print:
#     
#       Mitigation: Indirect branch cache disabled, Software count cache flush
#     
#     Which correctly indicates that the count cache is disabled, but
#     incorrectly says the software count cache flush is enabled.
#     
#     The root of the problem is that we are trying to handle all
#     combinations of options. But we know now that we only expect to see
#     the software count cache flush enabled if the other options are false.
#     
#     So split the two cases, which simplifies the logic and fixes the bug.
#     We were also missing a space before "(hardware accelerated)".
#     
#     The result is we see one of:
#     
#       Mitigation: Indirect branch serialisation (kernel only)
#       Mitigation: Indirect branch cache disabled
#       Mitigation: Software count cache flush
#       Mitigation: Software count cache flush (hardware accelerated)
#     
#     Fixes: ee13cb249fab ("powerpc/64s: Add support for software count cache flush")
#     Cc: stable@vger.kernel.org # v4.19+
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Reviewed-by: Michael Neuling <mikey@neuling.org>
#     Reviewed-by: Diana Craciun <diana.craciun@nxp.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-ld --version
# < git log --format=%s --max-count=1 92edf8df0ff2ae86cc632eeca0e651fd8431d40d
# < make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-fixes_mpc885_ads_defconfig+HUGETLB_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  mpc885_ads_defconfig
# Added to kconfig CONFIG_HUGETLBFS=y
# yes \n | make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-fixes_mpc885_ads_defconfig+HUGETLB_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  oldconfig
yes: standard output: Broken pipe
# make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-fixes_mpc885_ads_defconfig+HUGETLB_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  
<stdin>:1478:2: warning: #warning syscall pidfd_send_signal not implemented [-Wcpp]
<stdin>:1481:2: warning: #warning syscall io_uring_setup not implemented [-Wcpp]
<stdin>:1484:2: warning: #warning syscall io_uring_enter not implemented [-Wcpp]
<stdin>:1487:2: warning: #warning syscall io_uring_register not implemented [-Wcpp]
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:187:16: warning: 'old' 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:337:21: note: 'pdeo' was declared here
/kisskb/src/fs/fs_parser.c: In function 'fs_validate_description':
/kisskb/src/fs/fs_parser.c:413:6: warning: format '%lu' expects argument of type 'long unsigned int', but argument 3 has type 'int' [-Wformat]
/kisskb/src/net/sunrpc/xprtsock.c: In function 'xs_stream_data_receive_workfn':
/kisskb/src/net/sunrpc/xprtsock.c:529:2: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/sunrpc/xprtsock.c:499:10: note: 'ret' was declared here
/kisskb/src/net/sunrpc/xprtsock.c:529:2: warning: 'read' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/sunrpc/xprtsock.c:498:15: note: 'read' was declared here
/kisskb/src/mm/hugetlb.c: In function 'alloc_pool_huge_page':
/kisskb/src/mm/hugetlb.c:1435:5: warning: 'page' may be used uninitialized in this function [-Wuninitialized]
Image Name:   Linux-5.1.0-rc1-g92edf8df0ff2
Created:      Fri Mar 22 01:18:58 2019
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    1867403 Bytes = 1823.64 KiB = 1.78 MiB
Load Address: 00400000
Entry Point:  004001dc
Completed OK
# rm -rf /kisskb/build/powerpc-fixes_mpc885_ads_defconfig+HUGETLB_powerpc-gcc4.6
# Build took: 0:00:25.226344