linux-kernel - [PATCH] AMD: modify cpu probe from APICID to initial APICID

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Message-ID: <4EA6A24D.1000400@scalemp.com>
Date:	Tue, 25 Oct 2011 13:49:33 +0200
From:	Eial Czerwacki <eial@...lemp.com>
To:	linux-kernel@...r.kernel.org
CC:	"Shai Fultheim (Shai@...leMP.com)" <Shai@...leMP.com>
Subject: [PATCH] AMD: modify cpu probe from APICID to initial APICID

Make AMD probe processors using APICID rather than the initial APICID.


Signed-off-by: Eial Czerwacki<eial@...lemp.com>
Signed-off-by: Shai Fultheim<shai@...lemp.com>
---

--- a/arch/x86/kernel/cpu/amd.c	2011-09-14 05:58:19.542910736 -0700
+++ b/arch/x86/kernel/cpu/amd.c	2011-09-14 06:01:41.493209624 -0700
@@ -299,9 +299,9 @@ static void __cpuinit amd_detect_cmp(str

    	bits = c->x86_coreid_bits;
    	/* Low order bits define the core id (index of core in socket) */
-	c->cpu_core_id = c->initial_apicid&    ((1<<    bits)-1);
+	c->cpu_core_id = c->apicid&    ((1<<    bits)-1);
    	/* Convert the initial APIC ID into the socket ID */
-	c->phys_proc_id = c->initial_apicid>>    bits;
+	c->phys_proc_id = c->apicid>>    bits;
    	/* use socket ID also for last level cache */
    	per_cpu(cpu_llc_id, cpu) = c->phys_proc_id;
    	/* fixup topology information on multi-node processors */




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