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

On 7/22/07, David Rientjes <[email protected]> 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
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• References:
  • [PATCH 3/3] x86_64: offset apicid_to_node before use it before init_cpu_to_node
    • From: "Yinghai Lu" <[email protected]>
  • Re: [PATCH 3/3] x86_64: offset apicid_to_node before use it before init_cpu_to_node
    • From: David Rientjes <[email protected]>

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