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| author | Johannes Wikner <[email protected]> | 2024-09-23 20:49:36 +0200 |
|---|---|---|
| committer | Borislav Petkov (AMD) <[email protected]> | 2024-10-10 10:35:27 +0200 |
| commit | 50e4b3b94090babe8d4bb85c95f0d3e6b07ea86e (patch) | |
| tree | 5bf24bfdf5c982ad990378274a5c8330a3c7a2f8 /tools/testing/selftests/bpf/prog_tests/autoload.c | |
| parent | 3ea87dfa31a7b0bb0ff1675e67b9e54883013074 (diff) | |
x86/entry: Have entry_ibpb() invalidate return predictions
entry_ibpb() should invalidate all indirect predictions, including return
target predictions. Not all IBPB implementations do this, in which case the
fallback is RSB filling.
Prevent SRSO-style hijacks of return predictions following IBPB, as the return
target predictor can be corrupted before the IBPB completes.
[ bp: Massage. ]
Signed-off-by: Johannes Wikner <[email protected]>
Signed-off-by: Borislav Petkov (AMD) <[email protected]>
Cc: <[email protected]>
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/autoload.c')
0 files changed, 0 insertions, 0 deletions