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| author | Johannes Wikner <kwikner@ethz.ch> | 2024-10-08 13:58:03 +0300 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2024-10-10 11:38:21 +0300 |
| commit | c62fa117c32bd1abed9304c58e0da6940f8c7fc2 (patch) | |
| tree | d28b915af0b18aecc4942cb0156a42afe63b3ac0 /arch/arm/mach-rpc/ecard-loader.S | |
| parent | 0fad2878642ec46225af2054564932745ac5c765 (diff) | |
| download | linux-c62fa117c32bd1abed9304c58e0da6940f8c7fc2.tar.xz | |
x86/bugs: Do not use UNTRAIN_RET with IBPB on entry
Since X86_FEATURE_ENTRY_IBPB will invalidate all harmful predictions
with IBPB, no software-based untraining of returns is needed anymore.
Currently, this change affects retbleed and SRSO mitigations so if
either of the mitigations is doing IBPB and the other one does the
software sequence, the latter is not needed 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 'arch/arm/mach-rpc/ecard-loader.S')
0 files changed, 0 insertions, 0 deletions