Re: [PATCH 3/3] x86_64: offset apicid_to_node before use it before init_cpu_to_node

["Yinghai Lu" <yhlu.kernel@gmail.com>]

On 7/22/07, David Rientjes <rientjes@google.com> wrote:
> On Sat, 21 Jul 2007, Yinghai Lu wrote:
>
> > [PATCH 3/3] x86_64: offset apicid_to_node before use it before
> > init_cpu_to_node
> >
>
> Does this preserve the correct fake apicid_to_node mapping for the
> emulated case such as numa=fake=32?
>
+void __init update_apicid_to_node(void)
+{
+       /*
+        * let modify apicid_to_node array when boot_cpu_id !=0
+        * apicid_to_node[0] != NUMA_NODE
+        */
+
+       int i;
+
+       /* there is no apic id offset */
+       if (!boot_cpu_id)
+               return;
+
+       /* check if it is already updated */
+       if (apicid_to_node[0] == NUMA_NO_NODE)
+               return;

boot_cpu_id (bsp apic id ) is 0 under fake numa case?

or need to add some exit for fake numa mode.

YH