• Martin Schwidefsky's avatar
    s390: correct nospec auto detection init order · 906cd975
    Martin Schwidefsky authored
    [ Upstream commit 6a3d1e81a434fc311f224b8be77258bafc18ccc6 ]
    
    With CONFIG_EXPOLINE_AUTO=y the call of spectre_v2_auto_early() via
    early_initcall is done *after* the early_param functions. This
    overwrites any settings done with the nobp/no_spectre_v2/spectre_v2
    parameters. The code patching for the kernel is done after the
    evaluation of the early parameters but before the early_initcall
    is done. The end result is a kernel image that is patched correctly
    but the kernel modules are not.
    
    Make sure that the nospec auto detection function is called before the
    early parameters are evaluated and before the code patching is done.
    
    Fixes: 6e179d64126b ("s390: add automatic detection of the spectre defense")
    Signed-off-by: 's avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
    Signed-off-by: 's avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
    906cd975