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9687eb2399
Use attack vector controls to determine if retbleed mitigation is required. Disable SMT if cross-thread protection is desired and STIBP is not available. Signed-off-by: David Kaplan <david.kaplan@amd.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/20250707183316.1349127-13-david.kaplan@amd.com