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| author | Johannes Wikner <kwikner@ethz.ch> | 2024-10-08 12:36:30 +0200 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2024-10-10 10:35:53 +0200 |
| commit | 0fad2878642ec46225af2054564932745ac5c765 (patch) | |
| tree | f119cc0ab3c2db4baaff1bfd68fa89bb34933287 /tools/perf/scripts/python/exported-sql-viewer.py | |
| parent | 50e4b3b94090babe8d4bb85c95f0d3e6b07ea86e (diff) | |
x86/bugs: Skip RSB fill at VMEXIT
entry_ibpb() is designed to follow Intel's IBPB specification regardless
of CPU. This includes invalidating RSB entries.
Hence, if IBPB on VMEXIT has been selected, entry_ibpb() as part of the
RET untraining in the VMEXIT path will take care of all BTB and RSB
clearing so there's no need to explicitly fill the RSB anymore.
[ bp: Massage commit message. ]
Suggested-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Johannes Wikner <kwikner@ethz.ch>
Cc: <stable@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/exported-sql-viewer.py')
0 files changed, 0 insertions, 0 deletions