On Tue, Feb 13, 2018 at 05:02:59PM +0100, Thomas Gleixner wrote: > No. The table is basically excluding families <=5 and a few individual > ones. Anything newer than that should tell via ARCH_CAP_RDCL_NO and not > need any entry. It looks to me like Nick wants 4.9 to test X86_BUG_CPU_MELTDOWN in kaiser_check_boottime_disable() not X86_VENDOR_AMD. I.e., the auto disable should pay attention to the CPUs in the table like upstream. 4.9 got the kaiser backports which explains the difference. IMHO, of course. -- Regards/Gruss, Boris. SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg) --