On Sun, Jan 31, 2021 at 09:24:37AM -0800, Andy Lutomirski wrote: > #if defined(CONFIG_X86_64) && defined(CONFIG_CPU_SUP_AMD) > + if (likely(boot_cpu_data.x86_vendor != X86_VENDOR_AMD > + || boot_cpu_data.x86 != 0xf))
Same nitpick as for the other patch. Maybe we wan a little inline helper for the specific erratum that includes the vendor and family checks in adddition to using IS_ENABLED for the config options?