linux-kernel - [PATCH 10/16] x86: cpu common merge detect

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Date:	Thu,  4 Sep 2008 20:09:08 -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, Yinghai Lu <yhlu.kernel@...il.com>
Subject: [PATCH 10/16] x86: cpu common merge detect_ht

Signed-off-by: Yinghai Lu <yhlu.kernel@...il.com>
---
 arch/x86/kernel/cpu/common.c    |   13 ++++++++++++-
 arch/x86/kernel/cpu/common_64.c |    9 +++++++++
 2 files changed, 21 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index f919120..b2018f7 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -330,6 +330,9 @@ void __cpuinit detect_ht(struct cpuinfo_x86 *c)
 	if (cpu_has(c, X86_FEATURE_CMP_LEGACY))
 		goto out;
 
+	if (cpu_has(c, X86_FEATURE_XTOPOLOGY))
+		return;
+
 	cpuid(1, &eax, &ebx, &ecx, &edx);
 
 	smp_num_siblings = (ebx & 0xff0000) >> 16;
@@ -346,8 +349,11 @@ void __cpuinit detect_ht(struct cpuinfo_x86 *c)
 		}
 
 		index_msb = get_count_order(smp_num_siblings);
+#ifdef CONFIG_X86_64
+		c->phys_proc_id = phys_pkg_id(index_msb);
+#else
 		c->phys_proc_id = phys_pkg_id(c->initial_apicid, index_msb);
-
+#endif
 
 		smp_num_siblings = smp_num_siblings / c->x86_max_cores;
 
@@ -355,8 +361,13 @@ void __cpuinit detect_ht(struct cpuinfo_x86 *c)
 
 		core_bits = get_count_order(c->x86_max_cores);
 
+#ifdef CONFIG_X86_64
+		c->cpu_core_id = phys_pkg_id(index_msb) &
+					       ((1 << core_bits) - 1);
+#else
 		c->cpu_core_id = phys_pkg_id(c->initial_apicid, index_msb) &
 					       ((1 << core_bits) - 1);
+#endif
 	}
 
 out:
diff --git a/arch/x86/kernel/cpu/common_64.c b/arch/x86/kernel/cpu/common_64.c
index f7a2d52..7ac0a00 100644
--- a/arch/x86/kernel/cpu/common_64.c
+++ b/arch/x86/kernel/cpu/common_64.c
@@ -349,7 +349,11 @@ void __cpuinit detect_ht(struct cpuinfo_x86 *c)
 		}
 
 		index_msb = get_count_order(smp_num_siblings);
+#ifdef CONFIG_X86_64
 		c->phys_proc_id = phys_pkg_id(index_msb);
+#else
+		c->phys_proc_id = phys_pkg_id(c->initial_apicid, index_msb);
+#endif
 
 		smp_num_siblings = smp_num_siblings / c->x86_max_cores;
 
@@ -357,8 +361,13 @@ void __cpuinit detect_ht(struct cpuinfo_x86 *c)
 
 		core_bits = get_count_order(c->x86_max_cores);
 
+#ifdef CONFIG_X86_64
 		c->cpu_core_id = phys_pkg_id(index_msb) &
 					       ((1 << core_bits) - 1);
+#else
+		c->cpu_core_id = phys_pkg_id(c->initial_apicid, index_msb) &
+					       ((1 << core_bits) - 1);
+#endif
 	}
 
 out:
-- 
1.5.4.5

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