diff options
| author | Suresh Siddha <suresh.b.siddha@intel.com> | 2009-02-21 22:23:21 (GMT) |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-02-22 17:20:50 (GMT) |
| commit | ef1f87aa7ba6224bef1b750b3272ba281d8f43ed (patch) | |
| tree | aa20b7b3c6ff0eefccb17c02589f02c624bba8df /arch/x86/kernel/apic/x2apic_cluster.c | |
| parent | 9be1b56a3e718aa998772019c57c398dbb19e258 (diff) | |
| download | linux-fsl-qoriq-ef1f87aa7ba6224bef1b750b3272ba281d8f43ed.tar.xz | |
x86: select x2apic ops in early apic probe only if x2apic mode is enabled
If BIOS hands over the control to OS in legacy xapic mode, select
legacy xapic related ops in the early apic probe and shift to x2apic
ops later in the boot sequence, only after enabling x2apic mode.
If BIOS hands over the control in x2apic mode, select x2apic related
ops in the early apic probe.
This fixes the early boot panic, where we were selecting x2apic ops,
while the cpu is still in legacy xapic mode.
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/apic/x2apic_cluster.c')
| -rw-r--r-- | arch/x86/kernel/apic/x2apic_cluster.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/arch/x86/kernel/apic/x2apic_cluster.c b/arch/x86/kernel/apic/x2apic_cluster.c index 4e39d9a..354b9c4 100644 --- a/arch/x86/kernel/apic/x2apic_cluster.c +++ b/arch/x86/kernel/apic/x2apic_cluster.c @@ -14,10 +14,7 @@ DEFINE_PER_CPU(u32, x86_cpu_to_logical_apicid); static int x2apic_acpi_madt_oem_check(char *oem_id, char *oem_table_id) { - if (cpu_has_x2apic) - return 1; - - return 0; + return x2apic_enabled(); } /* Start with all IRQs pointing to boot CPU. IRQ balancing will shift them. */ |