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| author | Peter Zijlstra <[email protected]> | 2022-06-14 23:15:36 +0200 |
|---|---|---|
| committer | Borislav Petkov <[email protected]> | 2022-06-27 10:33:58 +0200 |
| commit | 0b53c374b9eff2255a386f1f1cfb9a928e52a5ae (patch) | |
| tree | 6c68189d053efd4ff530c6ba2b0bb86c7298d6f0 /tools/perf/scripts/python/bin | |
| parent | 00e1533325fd1fb5459229fe37f235462649f668 (diff) | |
x86/retpoline: Use -mfunction-return
Utilize -mfunction-return=thunk-extern when available to have the
compiler replace RET instructions with direct JMPs to the symbol
__x86_return_thunk. This does not affect assembler (.S) sources, only C
sources.
-mfunction-return=thunk-extern has been available since gcc 7.3 and
clang 15.
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Signed-off-by: Borislav Petkov <[email protected]>
Reviewed-by: Nick Desaulniers <[email protected]>
Reviewed-by: Josh Poimboeuf <[email protected]>
Tested-by: Nick Desaulniers <[email protected]>
Signed-off-by: Borislav Petkov <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/bin')
0 files changed, 0 insertions, 0 deletions