APIC IDs may not be consecutive and start from zero, so we cannot really use it

as a direct index into cpus.  Record apicid in struct cpu and have cpunum() look
for it. Replace cpu->id with cpunum() everywhere, and replace cpu->id with cpu->apicid.
Thanks to Xi Wang.

1 files changed, 1 insertions, 1 deletions

diff --git a/proc.h b/proc.h
index d1597cf..7352805 100644
--- a/proc.h
+++ b/proc.h
@@ -1,6 +1,6 @@
 // Per-CPU state
 struct cpu {
-  uchar id;                    // Local APIC ID; index into cpus[] below
+  uchar apicid;                // Local APIC ID
   struct context *scheduler;   // swtch() here to enter scheduler
   struct taskstate ts;         // Used by x86 to find stack for interrupt
   struct segdesc gdt[NSEGS];   // x86 global descriptor table