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x86/microcode/intel: Issue the revision updated message only on the BSP

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... in order to not pollute dmesg with a line for each updated microcode
engine.

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Ashok Raj <ashok.raj@intel.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jon Grimm <Jon.Grimm@amd.com>
Cc: kanth.ghatraju@oracle.com
Cc: konrad.wilk@oracle.com
Cc: Mihai Carabas <mihai.carabas@oracle.com>
Cc: patrick.colp@oracle.com
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: x86-ml <x86@kernel.org>
Link: https://lkml.kernel.org/r/20190824085341.GC16813@zn.tnic
This commit is contained in:
Borislav Petkov 2019-08-24 10:01:53 +02:00
parent 93946a33b5
commit 811ae8ba6d
1 changed files with 3 additions and 2 deletions
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5
arch/x86/kernel/cpu/microcode/intel.c
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@ -791,6 +791,7 @@ static enum ucode_state apply_microcode_intel(int cpu)
{
struct ucode_cpu_info *uci = ucode_cpu_info + cpu;
struct cpuinfo_x86 *c = &cpu_data(cpu);
bool bsp = c->cpu_index == boot_cpu_data.cpu_index;
struct microcode_intel *mc;
enum ucode_state ret;
static int prev_rev;
@ -836,7 +837,7 @@ static enum ucode_state apply_microcode_intel(int cpu)
return UCODE_ERROR;
}
if (rev != prev_rev) {
if (bsp && rev != prev_rev) {
pr_info("updated to revision 0x%x, date = %04x-%02x-%02x\n",
rev,
mc->hdr.date & 0xffff,
@ -852,7 +853,7 @@ out:
c->microcode = rev;
/* Update boot_cpu_data's revision too, if we're on the BSP: */
if (c->cpu_index == boot_cpu_data.cpu_index)
if (bsp)
boot_cpu_data.microcode = rev;
return ret;