Fix the "IBPB mitigated RETBleed" mode of operation on AMD CPUs (not turned on by default), which also need STIBP enabled (if available) to be '100% safe' on even the shortest speculation windows. Signed-off-by: Ingo Molnar <mingo@kernel.org>
Fix the "IBPB mitigated RETBleed" mode of operation on AMD CPUs (not turned on by default), which also need STIBP enabled (if available) to be '100% safe' on even the shortest speculation windows. Signed-off-by: Ingo Molnar <mingo@kernel.org>