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authorCyrill Gorcunov <gorcunov@gmail.com>2008-08-24 02:01:40 -0700
committerIngo Molnar <mingo@elte.hu>2008-10-16 16:53:00 +0200
commit7c37e48b5125fdb0acac846a0a3af42806175d44 (patch)
tree4960e3c9b0ffae7ca79cfe189b7b11632b2acc76 /arch/x86
parentdb4b5525caafd846ec20f95afbc6403c792e22cf (diff)
x86: apic - introduce get_physical_broadcast for 64bit
We don't really use it now on 64bit mode but could reserve it for future. Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/kernel/apic_64.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/x86/kernel/apic_64.c b/arch/x86/kernel/apic_64.c
index 8f551276681..bb46711a0b1 100644
--- a/arch/x86/kernel/apic_64.c
+++ b/arch/x86/kernel/apic_64.c
@@ -244,6 +244,16 @@ void __cpuinit enable_NMI_through_LVT0(void)
apic_write(APIC_LVT0, v);
}
+#ifdef CONFIG_X86_32
+/**
+ * get_physical_broadcast - Get number of physical broadcast IDs
+ */
+int get_physical_broadcast(void)
+{
+ return modern_apic() ? 0xff : 0xf;
+}
+#endif
+
/**
* lapic_get_maxlvt - get the maximum number of local vector table entries
*/