From: Fenghua Yu <fenghua...@intel.com>
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...@intel.com>
---
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
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