Author: kevans
Date: Wed Mar 14 03:43:49 2018
New Revision: 330903
URL: https://svnweb.freebsd.org/changeset/base/330903

Log:
  MFC r326204: Do not bind to CPUs with SMT
  
  Do not bind to CPUs with SMT, which use a different CPU numbering convention
  that does not play well with this driver.

Modified:
  stable/11/sys/dev/ofw/ofw_cpu.c
Directory Properties:
  stable/11/   (props changed)

Modified: stable/11/sys/dev/ofw/ofw_cpu.c
==============================================================================
--- stable/11/sys/dev/ofw/ofw_cpu.c     Wed Mar 14 03:41:07 2018        
(r330902)
+++ stable/11/sys/dev/ofw/ofw_cpu.c     Wed Mar 14 03:43:49 2018        
(r330903)
@@ -191,6 +191,10 @@ ofw_cpu_probe(device_t dev)
        if (type == NULL || strcmp(type, "cpu") != 0)
                return (ENXIO);
 
+       /* Skip SMT CPUs, which we can't reasonably represent with this code */
+       if (OF_hasprop(ofw_bus_get_node(dev), "ibm,ppc-interrupt-server#s"))
+               return (ENXIO);
+
        device_set_desc(dev, "Open Firmware CPU");
        return (0);
 }
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