[PATCH] driver/iommu/intel_irq_remapping: Print x2apic opt out info instead of printing a warning

[PATCH] driver/iommu/intel_irq_remapping: Print x2apic opt out info instead of printing a warning

[Fenghua Yu]

From: Fenghua Yu <fenghua.yu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>

BIOS can set up x2apic_opt_out bit on some platforms. This is not a BIOS
problem. A user can either disable the x2apic_opt_out bit in BIOS or by kernel
parameter "no_x2apic_optout". Instead of printing a warning, we just print
information of x2apic opt out.

Signed-off-by: Fenghua Yu <fenghua.yu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
---
 drivers/iommu/intel_irq_remapping.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/iommu/intel_irq_remapping.c b/drivers/iommu/intel_irq_remapping.c
index 14de1ab..cd3c4d6 100644
--- a/drivers/iommu/intel_irq_remapping.c
+++ b/drivers/iommu/intel_irq_remapping.c
@@ -637,10 +637,7 @@ static int __init intel_enable_irq_remapping(void)
 	if (x2apic_supported()) {
 		eim = !dmar_x2apic_optout();
 		if (!eim)
-			printk(KERN_WARNING
-				"Your BIOS is broken and requested that x2apic be disabled.\n"
-				"This will slightly decrease performance.\n"
-				"Use 'intremap=no_x2apic_optout' to override BIOS request.\n");
+			pr_info("x2apic is disabled because BIOS sets x2apic opt out bit. You can use 'intremap=no_x2apic_optout' to override the BIOS setting.\n");
 	}
 
 	for_each_iommu(iommu, drhd) {
-- 
1.8.1.2