Re: 256 apic id for amd64

[Andi Kleen <ak@muc.de>]

On Fri, Jan 07, 2005 at 04:50:43PM -0800, YhLu wrote:
> But the result looks ugly
> 
> I keep core0 and core1 of node0 to use 0/1 got
> 
> 4407.29 BogoMIPS (lpj=2203648)
> CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
> CPU: L2 Cache: 1024K (64 bytes/line)
> CPU 7 -> Node 3
> phy_proc_id[0] = 0

But that't BSP = 0, isn't it?
Where's the problem with that setup?

> phy_proc_id[1] = 0
> phy_proc_id[2] = 9
> phy_proc_id[3] = 9
> phy_proc_id[4] = 10
> phy_proc_id[5] = 10
> phy_proc_id[6] = 11
> phy_proc_id[7] = 11
> CPU: Physical Processor ID: 11
>  stepping 00
> Total of 8 processors activated (35209.21 BogoMIPS).
> If only keep core0/node0 to use 0.
> 
> Will get
> phy_proc_id[0] = 0
> phy_proc_id[1] = 8
> phy_proc_id[2] = 9
> phy_proc_id[3] = 9
> phy_proc_id[4] = 10
> phy_proc_id[5] = 10
> phy_proc_id[6] = 11
> phy_proc_id[7] = 11
> 
> it separate core0 and core1 of node 1

That's not supported yes. AMD docs specify core 0/1 are always 
consecutive in APIC space.

-Andi