linux-kernel - [PATCH 02/18] x86: apic - introduce get_physical

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Date:	Sun, 24 Aug 2008 02:01:40 -0700
From:	Yinghai Lu <yhlu.kernel@...il.com>
To:	Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, Cyrill Gorcunov <gorcunov@...il.com>,
	Yinghai Lu <yhlu.kernel@...il.com>
Subject: [PATCH 02/18] x86: apic - introduce get_physical_broadcast for 64bit

From: Cyrill Gorcunov <gorcunov@...il.com>

We don't really use it now on 64bit mode but
could reserve it for future.

Signed-off-by: Cyrill Gorcunov <gorcunov@...il.com>
Signed-off-by: Yinghai Lu <yhlu.kernel@...il.com>
---
 arch/x86/kernel/apic_64.c |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kernel/apic_64.c b/arch/x86/kernel/apic_64.c
index 8f55127..bb46711 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
  */
-- 
1.5.4.5

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