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x86/microcode: Issue update message only once

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This is especially annoying on large boxes:

  x86: Booting SMP configuration:
  .... node  #0, CPUs:          #1
  microcode: CPU1 microcode updated early to revision 0x428, date = 2014-05-29
     #2
  microcode: CPU2 microcode updated early to revision 0x428, date = 2014-05-29
     #3
  ...

so issue the update message only once.

$ grep microcode /proc/cpuinfo

shows whether every core got updated properly.

Reported-by: Ingo Molnar <mingo@kernel.org>
Tested-by: Thomas Voegtle <tv@lio96.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1454499225-21544-6-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Borislav Petkov 2016-02-03 12:33:33 +01:00 committed by Ingo Molnar
parent 43858f57bc
commit b7f500aedd
2 changed files with 7 additions and 10 deletions
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4
arch/x86/kernel/cpu/microcode/amd.c
View file

@ -432,8 +432,8 @@ int __init save_microcode_in_initrd_amd(void)
container = cont_va;
if (ucode_new_rev)
pr_info("microcode: updated early to new patch_level=0x%08x\n",
ucode_new_rev);
pr_info_once("microcode updated early to new patch_level=0x%08x\n",
ucode_new_rev);
eax = cpuid_eax(0x00000001);
eax = ((eax >> 8) & 0xf) + ((eax >> 20) & 0xff);

13
arch/x86/kernel/cpu/microcode/intel.c
View file

@ -571,14 +571,11 @@ scan_microcode(struct mc_saved_data *mc_saved_data, unsigned long *initrd,
static void
print_ucode_info(struct ucode_cpu_info *uci, unsigned int date)
{
int cpu = smp_processor_id();
pr_info("CPU%d microcode updated early to revision 0x%x, date = %04x-%02x-%02x\n",
cpu,
uci->cpu_sig.rev,
date & 0xffff,
date >> 24,
(date >> 16) & 0xff);
pr_info_once("microcode updated early to revision 0x%x, date = %04x-%02x-%02x\n",
uci->cpu_sig.rev,
date & 0xffff,
date >> 24,
(date >> 16) & 0xff);
}
#ifdef CONFIG_X86_32