On Fri, Jan 05, 2018 at 06:12:19PM -0800, Tim Chen wrote: > +void scan_spec_ctrl_feature(struct cpuinfo_x86 *c) > +{ > + if ((!c->cpu_index) && (boot_cpu_has(X86_FEATURE_SPEC_CTRL))) {
We should test X86_BUG_SPECTRE_V1 here too before default enabling this, no? > + if (!ibrs_admin_disabled) { > + dynamic_ibrs = 1; > + ibrs_enabled = IBRS_ENABLED; > + } > + } > +}