Mercurial > illumos > illumos-gate
changeset 12816:beea835429cd
6961910 active guest flag becomes '-t----' if a cpu is added after cpu0 was removed
| author | Alexandre Chartre <Alexandre.Chartre@oracle.com> |
|---|---|
| date | Fri, 09 Jul 2010 15:27:23 -0700 |
| parents | f5ee6337750c |
| children | 288ae711509e |
| files | usr/src/uts/sun4v/os/mach_mp_startup.c |
| diffstat | 1 files changed, 11 insertions(+), 3 deletions(-) [+] |
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--- a/usr/src/uts/sun4v/os/mach_mp_startup.c Fri Jul 09 12:35:26 2010 -0400 +++ b/usr/src/uts/sun4v/os/mach_mp_startup.c Fri Jul 09 15:27:23 2010 -0700 @@ -20,8 +20,7 @@ */ /* - * Copyright 2010 Sun Microsystems, Inc. All rights reserved. - * Use is subject to license terms. + * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. */ #include <sys/machsystm.h> @@ -74,7 +73,16 @@ * StarFire requires the signature block stuff setup here */ CPU_SGN_MAPIN(cpuid); - if (cpuid == cpu0.cpu_id) { + + /* + * cpu0 is always initialized at boot time, but it can be initialized + * again if it is dynamically removed and then re-added. We check if + * we are booting by verifying cpu_list. During boot, cpu0 is already + * in cpu_list when this function is called. When a cpu is dynamically + * added (after the boot) then it is added to cpu_list after this + * function is called. + */ + if (cpuid == cpu0.cpu_id && ncpus == 1 && cpu_list[0].cpu_id == cpuid) { /* * cpu0 starts out running. Other cpus are * still in OBP land and we will leave them