x86: Implement the default x86_32_early_logical_apicid()

Implement x86_32_early_logical_apicid() for the default apic
flat routing.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: eric.dumazet@gmail.com
Cc: yinghai@kernel.org
Cc: brgerst@gmail.com
Cc: gorcunov@gmail.com
Cc: penberg@kernel.org
Cc: shaohui.zheng@intel.com
Cc: rientjes@google.com
LKML-Reference: <1295789862-25482-9-git-send-email-tj@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 6 insertions, 1 deletions

diff --git a/arch/x86/kernel/apic/probe_32.c b/arch/x86/kernel/apic/probe_32.c
index 40be7c3cdfeb..0f9a9ab49e79 100644
--- a/arch/x86/kernel/apic/probe_32.c
+++ b/arch/x86/kernel/apic/probe_32.c
@@ -77,6 +77,11 @@ void __init default_setup_apic_routing(void)
                 apic->setup_apic_routing();
 }
 
+static int default_x86_32_early_logical_apicid(int cpu)
+{
+        return 1 << cpu;
+}
+
 static void setup_apic_flat_routing(void)
 {
 #ifdef CONFIG_X86_IO_APIC
@@ -167,7 +172,7 @@ struct apic apic_default = {
         .wait_icr_idle                  = native_apic_wait_icr_idle,
         .safe_wait_icr_idle             = native_safe_apic_wait_icr_idle,
 
-        .x86_32_early_logical_apicid    = noop_x86_32_early_logical_apicid,
+        .x86_32_early_logical_apicid    = default_x86_32_early_logical_apicid,
 };
 
 extern struct apic apic_numaq;