Messages in this thread Patch in this message | | | Date | Mon, 10 Jan 2011 13:52:11 -0600 | From | Jack Steiner <> | Subject | [PATCH] x86, UV: Fix APICID shift for westmere processors |
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Westmere processors use a different algorithm for assigning APICIDs on SGI UV systems. The location of the node number within the apicid is now a function of the processor type.
Signed-off-by: Jack Steiner <steiner@sgi.com>
--- arch/x86/kernel/apic/x2apic_uv_x.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
Index: linux/arch/x86/kernel/apic/x2apic_uv_x.c =================================================================== --- linux.orig/arch/x86/kernel/apic/x2apic_uv_x.c 2010-12-31 10:53:26.878105424 -0600 +++ linux/arch/x86/kernel/apic/x2apic_uv_x.c 2010-12-31 10:54:45.291099878 -0600 @@ -378,7 +378,7 @@ struct apic __refdata apic_x2apic_uv_x = static __cpuinit void set_x2apic_extra_bits(int pnode) { - __get_cpu_var(x2apic_extra_bits) = (pnode << 6); + __get_cpu_var(x2apic_extra_bits) = (pnode << uvh_apicid.s.pnode_shift); } /*
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