> -----Original Message----- > From: [email protected] [mailto:linux-kernel- > [email protected]] On Behalf Of Andi Kleen > Sent: Tuesday, May 31, 2016 4:23 PM > To: [email protected] > Cc: [email protected]; Andi Kleen <[email protected]> > Subject: [PATCH] x86/microcode/intel: Quieten down microcode updates > on large systems ... > diff --git a/arch/x86/kernel/cpu/microcode/intel.c > @@ -808,8 +809,14 @@ static int collect_cpu_info(int cpu_num, struct > cpu_signature *csig) > } > > csig->rev = c->microcode; > - pr_info("CPU%d sig=0x%x, pf=0x%x, revision=0x%x\n", > - cpu_num, csig->sig, csig->pf, csig->rev); > + > + /* No extra locking on prev, races are harmless. */ > + if (csig->sig != prev.sig || csig->pf != prev.pf || > + csig->rev != prev.rev) { > + pr_info("CPU sig=0x%x, pf=0x%x, revision=0x%x\n", > + csig->sig, csig->pf, csig->rev); > + prev = *csig; > + } ... > - pr_info("CPU%d updated to revision 0x%x, date = %04x-%02x- > %02x\n", > - cpu, val[1], > - mc->hdr.date & 0xffff, > - mc->hdr.date >> 24, > - (mc->hdr.date >> 16) & 0xff); > + if (val[1] != prev_rev) { > + pr_info("CPU updated to revision 0x%x, date = %04x-%02x- > %02x\n",
"CPU(s)" would help convey that the messages now apply to one or more CPUs.
