PSARC 2009/104 Hot-Plug Support for ACPI-based Systems
6846955 Device tree creation and acpi virtual nexus driver for acpi based x86 systems
6849408 device match rule in ppm.conf is not flexible

*** 17,32 ****
   * information: Portions Copyright [yyyy] [name of copyright owner]
   *
   * CDDL HEADER END
   */
  /*
!  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
- #pragma ident   "%Z%%M% %I%     %E% SMI"
- 
  /*
   * ppm driver subroutines
   */
  
  #include <sys/open.h>
--- 17,30 ----
   * information: Portions Copyright [yyyy] [name of copyright owner]
   *
   * CDDL HEADER END
   */
  /*
!  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
  /*
   * ppm driver subroutines
   */
  
  #include <sys/open.h>
*** 397,406 ****
--- 395,407 ----
  ppm_lookup_dev(dev_info_t *dip)
  {
          char path[MAXNAMELEN];
          ppm_domain_t *domp;
          ppm_db_t *dbp;
+ #ifdef  __x86
+         char *devtype = NULL;
+ #endif  /* __x86 */
  
          PPM_GET_PATHNAME(dip, path);
          for (domp = ppm_domain_p; domp; domp = domp->next) {
                  if (PPM_DOMAIN_UP(domp)) {
                          for (dbp = domp->conflist; dbp; dbp = dbp->next) {
*** 409,418 ****
--- 410,438 ----
                                   * its full name
                                   */
                                  if (dip == ddi_root_node() &&
                                      strcmp(dbp->name, "/") == 0)
                                          return (domp);
+ 
+ #ifdef  __x86
+                                 /*
+                                  * Special rule to catch all CPU devices on x86.
+                                  */
+                                 if (domp->model == PPMD_CPU &&
+                                     strcmp(dbp->name, "/") == 0 &&
+                                     ddi_prop_lookup_string(DDI_DEV_T_ANY, dip,
+                                     DDI_PROP_DONTPASS, "device_type",
+                                     &devtype) == DDI_SUCCESS) {
+                                         if (strcmp(devtype, "cpu") == 0) {
+                                                 ddi_prop_free(devtype);
+                                                 return (domp);
+                                         } else {
+                                                 ddi_prop_free(devtype);
+                                         }
+                                 }
+ #endif  /* __x86 */
+ 
                                  if (ppm_match_devs(path, dbp) == 0)
                                          return (domp);
                          }
                  }
          }