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| author | Pawan Gupta <pawan.kumar.gupta@linux.intel.com> | 2025-06-11 10:29:00 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-08-15 16:38:28 +0200 |
| commit | c989f3fe63c71b4a8105908eb12f6d491d1d0d00 (patch) | |
| tree | 1ed4b3620160d8898a9645240f4f872a9a0e711b /rust/kernel | |
| parent | 3b9405ca52a4e2ba876b63f0cccba63d6335ae5f (diff) | |
x86/bugs: Avoid AUTO after the select step in the retbleed mitigation
[ Upstream commit 98ff5c071d1cde9426b0bfa449c43d49ec58f1c4 ]
The retbleed select function leaves the mitigation to AUTO in some cases.
Moreover, the update function can also set the mitigation to AUTO. This
is inconsistent with other mitigations and requires explicit handling of
AUTO at the end of update step.
Make sure a mitigation gets selected in the select step, and do not change
it to AUTO in the update step. When no mitigation can be selected leave it
to NONE, which is what AUTO was getting changed to in the end.
Suggested-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Acked-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/20250611-eibrs-fix-v4-1-5ff86cac6c61@linux.intel.com
Stable-dep-of: ab9f2388e0b9 ("x86/bugs: Allow ITS stuffing in eIBRS+retpoline mode also")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'rust/kernel')
0 files changed, 0 insertions, 0 deletions