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    SubjectRe: [PATCH v2 8/8] x86: Use IBRS for firmware update path
    On Fri, Jan 05, 2018 at 06:12:23PM -0800, Tim Chen wrote:
    > +void unprotected_firmware_begin(void)
    > +{
    > + if (firmware_ibrs) {
    > + __disable_indirect_speculation();
    > + } else {
    > + /*
    > + * rmb prevent unwanted speculation when we
    > + * are setting IBRS
    > + */
    > + rmb();
    > + }
    > +}
    > +EXPORT_SYMBOL_GPL(unprotected_firmware_begin);

    What modules need these functions?

    And again, if they are needed, we need a better naming scheme for them.
    Prefix them all with "firmware_" perhaps to make it a bit nicer?

    thanks,

    greg k-h

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