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author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2018-04-20 12:48:52 +0200 |
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committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2018-04-23 07:57:17 +0200 |
commit | 6cf09958f32b9667bb3ebadf74367c791112771b (patch) | |
tree | 78cac8001df28cbf073c3ca8cb6953a972b4ffea /drivers | |
parent | 3368e547c52b96586f0edf9657ca12b94d8e61a7 (diff) |
s390: correct module section names for expoline code revert
The main linker script vmlinux.lds.S for the kernel image merges
the expoline code patch tables into two section ".nospec_call_table"
and ".nospec_return_table". This is *not* done for the modules,
there the sections retain their original names as generated by gcc:
".s390_indirect_call", ".s390_return_mem" and ".s390_return_reg".
The module_finalize code has to check for the compiler generated
section names, otherwise no code patching is done. This slows down
the module code in case of "spectre_v2=off".
Cc: stable@vger.kernel.org # 4.16
Fixes: f19fbd5ed6 ("s390: introduce execute-trampolines for branches")
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers')
0 files changed, 0 insertions, 0 deletions