[PATCH 6/8] SGI x86_64 UV: Limit the number of microcode messages

[Mike Travis]

Limit number of microcode messages of the form:

[   50.887135] microcode: CPU0 sig=0x206e5, pf=0x4, revision=0xffff001

Cc: Tigran Aivazian <tigran@xxxxxxxxxxxxxxxxxxxx>
Cc: H. Peter Anvin <hpa@xxxxxxxxx>
Cc: x86@xxxxxxxxxx
Cc: Dmitry Adamushko <dmitry.adamushko@xxxxxxxxx>
Cc: Andreas Mohr <andi@xxxxxxxx>
Cc: Hugh Dickins <hugh@xxxxxxxxxxx>
Cc: Hannes Eder <hannes@xxxxxxxxxxxxxx>
Cc: linux-kernel@xxxxxxxxxxxxxxx
Signed-off-by: Mike Travis <travis@xxxxxxx>
---
 arch/x86/kernel/microcode_intel.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- linux.orig/arch/x86/kernel/microcode_intel.c
+++ linux/arch/x86/kernel/microcode_intel.c
@@ -165,7 +165,9 @@
 	/* get the current revision from MSR 0x8B */
 	rdmsr(MSR_IA32_UCODE_REV, val[0], csig->rev);
 
-	printk(KERN_INFO "microcode: CPU%d sig=0x%x, pf=0x%x, revision=0x%x\n",
+	if (cpu_num < 4 || !limit_console_output(false))
+		printk(KERN_INFO
+			"microcode: CPU%d sig=0x%x, pf=0x%x, revision=0x%x\n",
 			cpu_num, csig->sig, csig->pf, csig->rev);
 
 	return 0;

-- 
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