• Andre Przywara's avatar
    arm64: detect silicon revisions and set cap bits accordingly · e116a375
    Andre Przywara authored
    After each CPU has been started, we iterate through a list of
    CPU features or bugs to detect CPUs which need (or could benefit
    from) kernel code patches.
    For each feature/bug there is a function which checks if that
    particular CPU is affected. We will later provide some more generic
    functions for common things like testing for certain MIDR ranges.
    We do this for every CPU to cover big.LITTLE systems properly as
    If a certain feature/bug has been detected, the capability bit will
    be set, so that later the call to apply_alternatives() will trigger
    the actual code patching.
    Signed-off-by: default avatarAndre Przywara <andre.przywara@arm.com>
    Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
cpuinfo.c 6.67 KB