On 12/20/24 13:36, Sohil Mehta wrote: > The MP specification version 1.4 references the i486 and early Pentium > processors in family 5. Can you please elaborate on how this reference is relevant to the patch at hand? > However, all processors starting with family 6 likely do not need the > 10 msec INIT delay. The omission of the Pentium 4s (family 15) seems > like an oversight in the original check. > > With some risk, choose a simpler check and extend the quirk to all > recent and upcoming Intel processors. I'm struggling to follow this a bit. I think these are the facts that matter: * init_udelay=0 means "no quirk" * Modern CPUs don't have the quirk * The current check says "only family 6 is modern" * Family 15 is _probably_ modern and just forgotten about And this is what you're doing in the end: Consider everything PPro and later to be modern, including all of families 6, 15 and the new 18/19 CPUs. Right?