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| author | Josh Poimboeuf <jpoimboe@kernel.org> | 2022-06-15 01:07:19 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-07-25 12:26:45 +0300 |
| commit | fbab1c94eb1a3139d7ac0620dc6d7d6a33f3b255 (patch) | |
| tree | 6de717e981337e50b0b734b90a1dc924722ad3ba /scripts | |
| parent | c8845b875437b8ea9cd023f15b44c436c9c5b62d (diff) | |
| download | linux-fbab1c94eb1a3139d7ac0620dc6d7d6a33f3b255.tar.xz | |
x86/bugs: Do IBPB fallback check only once
commit 0fe4aeea9c01baabecc8c3afc7889c809d939bc2 upstream.
When booting with retbleed=auto, if the kernel wasn't built with
CONFIG_CC_HAS_RETURN_THUNK, the mitigation falls back to IBPB. Make
sure a warning is printed in that case. The IBPB fallback check is done
twice, but it really only needs to be done once.
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'scripts')
0 files changed, 0 insertions, 0 deletions