summaryrefslogtreecommitdiffstats
path: root/arch/x86/kernel/apic/x2apic_phys.c
diff options
context:
space:
mode:
authorKukjin Kim <kgene.kim@samsung.com>2012-05-13 06:48:21 +0900
committerKukjin Kim <kgene.kim@samsung.com>2012-05-13 06:48:21 +0900
commit2870f5352451a99a364a807803e4c39477264c3c (patch)
tree11ee9795559bdc9645a0a17815611c624066c515 /arch/x86/kernel/apic/x2apic_phys.c
parent06c77b3ce1b81163d74d9d5e904de731934e8510 (diff)
parent5fdbdd1d4b9ec58e51092e24c231a303b38cdb94 (diff)
Merge branch 'next/cleanup-samsung-macro' into next/cleanup-samsung
Diffstat (limited to 'arch/x86/kernel/apic/x2apic_phys.c')
-rw-r--r--arch/x86/kernel/apic/x2apic_phys.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/kernel/apic/x2apic_phys.c b/arch/x86/kernel/apic/x2apic_phys.c
index 8a778db45e3..991e315f422 100644
--- a/arch/x86/kernel/apic/x2apic_phys.c
+++ b/arch/x86/kernel/apic/x2apic_phys.c
@@ -24,6 +24,12 @@ static int x2apic_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
{
if (x2apic_phys)
return x2apic_enabled();
+ else if ((acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) &&
+ (acpi_gbl_FADT.flags & ACPI_FADT_APIC_PHYSICAL) &&
+ x2apic_enabled()) {
+ printk(KERN_DEBUG "System requires x2apic physical mode\n");
+ return 1;
+ }
else
return 0;
}