RE: 256 apic id for amd64

[YhLu]

Then sepertate that into init_amd and init_intel.

YH

-----Original Message-----
From: James Cleverdon [mailto:jamesclv@xxxxxxxxxx] 
Sent: Friday, January 07, 2005 4:13 PM
To: YhLu
Cc: Andi Kleen; Matt Domsch; linux-kernel@xxxxxxxxxxxxxxx;
discuss@xxxxxxxxxx; suresh.b.siddha@xxxxxxxxx
Subject: Re: 256 apic id for amd64

Clustered APIC systems need the phys_proc_id to come from the APIC ID 
register.  Intel prefers that non-clustered systems get their 
phys_proc_id from the cpuid opcode.

So, using c->x86_apicid is unlikely to satisfy both parties.


On Friday 07 January 2005 04:04 pm, YhLu wrote:
> arch/x86_64/kernel/setup.c
>
> static void __init detect_ht(struct cpuinfo_x86 *c)
>
>                 phys_proc_id[cpu] = phys_pkg_id(index_msb);
>
> --->
> 			  Phy_proc_id[cpu] = cpu_to_node[cpu];
> Or
>    	      // that is initial apicid
>           phys_proc_id[cpu] = c->x86_apicid >>
> hweight32(c->x86_num_cores - 1);
>
> YH
>
> -----Original Message-----
> From: Andi Kleen [mailto:ak@xxxxxx]
> Sent: Friday, January 07, 2005 2:18 PM
> To: YhLu
> Cc: Matt Domsch; linux-kernel@xxxxxxxxxxxxxxx; discuss@xxxxxxxxxx;
> jamesclv@xxxxxxxxxx; suresh.b.siddha@xxxxxxxxx
> Subject: Re: 256 apic id for amd64
>
> On Fri, Jan 07, 2005 at 01:44:19PM -0800, YhLu wrote:
> > Can you consider to use c->x86_apicid to get phy_proc_id, that is
> > initial apicid.?
>
> Where?
>
> -Andi

-- 
James Cleverdon
IBM LTC (xSeries Linux Solutions)
{jamesclv(Unix, preferred), cleverdj(Notes)} at us dot ibm dot comm
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