The following commit has been merged into the x86/microcode branch of tip:
Commit-ID: 811ae8ba6dca6b91a3ceccf9d40b98818cc4f400
Gitweb: https://git.kernel.org/tip/811ae8ba6dca6b91a3ceccf9d40b98818cc4f400
Author: Borislav Petkov <bp@xxxxxxx>
AuthorDate: Sat, 24 Aug 2019 10:01:53 +02:00
Committer: Borislav Petkov <bp@xxxxxxx>
CommitterDate: Tue, 01 Oct 2019 16:06:35 +02:00
x86/microcode/intel: Issue the revision updated message only on the BSP
... in order to not pollute dmesg with a line for each updated microcode
engine.
Signed-off-by: Borislav Petkov <bp@xxxxxxx>
Cc: Ashok Raj <ashok.raj@xxxxxxxxx>
Cc: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Jon Grimm <Jon.Grimm@xxxxxxx>
Cc: kanth.ghatraju@xxxxxxxxxx
Cc: konrad.wilk@xxxxxxxxxx
Cc: Mihai Carabas <mihai.carabas@xxxxxxxxxx>
Cc: patrick.colp@xxxxxxxxxx
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Tom Lendacky <thomas.lendacky@xxxxxxx>
Cc: x86-ml <x86@xxxxxxxxxx>
Link: https://lkml.kernel.org/r/20190824085341.GC16813@xxxxxxx
---
arch/x86/kernel/cpu/microcode/intel.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kernel/cpu/microcode/intel.c b/arch/x86/kernel/cpu/microcode/intel.c
index ce799cf..6a99535 100644
--- a/arch/x86/kernel/cpu/microcode/intel.c
+++ b/arch/x86/kernel/cpu/microcode/intel.c
@@ -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;
|