x86: print out if acpi want physical flat of all

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 3 insertions, 1 deletions

diff --git a/arch/x86/kernel/genapic_flat_64.c b/arch/x86/kernel/genapic_flat_64.c
index 9eca5ba7a6b..2ec2de8d8c4 100644
--- a/arch/x86/kernel/genapic_flat_64.c
+++ b/arch/x86/kernel/genapic_flat_64.c
@@ -179,8 +179,10 @@ static int __init physflat_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
          * is an example).
          */
         if (acpi_gbl_FADT.header.revision > FADT2_REVISION_ID &&
-                (acpi_gbl_FADT.flags & ACPI_FADT_APIC_PHYSICAL))
+                (acpi_gbl_FADT.flags & ACPI_FADT_APIC_PHYSICAL)) {
+                printk(KERN_DEBUG "system APIC only can use physical flat");
                 return 1;
+        }
 #endif
 
         return 0;