[XenPPC] cpu_possible_map

[Hollis Blanchard <hollisb@xxxxxxxxxx>]

This hasn't hit us in xenppc-unstable because we're downlevel, but
here's what I committed in the merge tree:

diff -r 030a041bbe90 xen/arch/powerpc/boot_of.c
--- a/xen/arch/powerpc/boot_of.c        Tue Aug 29 06:53:58 2006 -0400
+++ b/xen/arch/powerpc/boot_of.c        Tue Aug 29 17:45:56 2006 -0500
@@ -993,6 +993,7 @@ static int __init boot_of_cpus(void)
     /* We want a continuous logical cpu number space.  */
     cpu_set(0, cpu_present_map);
     cpu_set(0, cpu_online_map);
+    cpu_set(0, cpu_possible_map);
 
     /* Spin up all CPUS, even if there are more than NR_CPUS, because
      * Open Firmware has them spinning on cache lines which will
@@ -1039,8 +1040,10 @@ static int __init boot_of_cpus(void)
         } while (pong == ping);
         of_printf("pong = 0x%x\n", pong);
 
-        if (pong != ping)
+        if (pong != ping) {
             cpu_set(logical, cpu_present_map);
+            cpu_set(logical, cpu_possible_map);
+        }
 
         cpu = of_getpeer(cpu);
     }
diff -r 030a041bbe90 xen/arch/powerpc/setup.c
--- a/xen/arch/powerpc/setup.c  Tue Aug 29 06:53:58 2006 -0400
+++ b/xen/arch/powerpc/setup.c  Tue Aug 29 17:45:37 2006 -0500
@@ -74,6 +74,7 @@ cpumask_t cpu_sibling_map[NR_CPUS] __rea
 cpumask_t cpu_sibling_map[NR_CPUS] __read_mostly;
 cpumask_t cpu_online_map; /* missing ifdef in schedule.c */
 cpumask_t cpu_present_map;
+cpumask_t cpu_possible_map;
 
 /* XXX get this from ISA node in device tree */
 ulong isa_io_base;
@@ -254,6 +255,7 @@ static int kick_secondary_cpus(int maxcp
             break;
         init_parea(cpuid);
         cpu_set(cpuid, cpu_online_map);
+        cpu_set(cpuid, cpu_possible_map);
     }
 
     return 0;

I'm actually not sure why we need to set secondary cpus in 'possible' in
both kick_secondary_cpus() and boot_of_cpus(), but this gets me booting.

-- 
Hollis Blanchard
IBM Linux Technology Center


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