[SPARC64]: Detect sun4v early in boot process.
We look for "SUNW,sun4v" in the 'compatible' property
of the root OBP device tree node.
Protect every %ver register access, to make sure it is
not touched on sun4v, as %ver is hyperprivileged there.
Lock kernel TLB entries using hypervisor calls instead of
calls into OBP.
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc64/prom/tree.c b/arch/sparc64/prom/tree.c
index b1ff9e8..49075ab 100644
--- a/arch/sparc64/prom/tree.c
+++ b/arch/sparc64/prom/tree.c
@@ -51,7 +51,7 @@
__inline__ int
__prom_getsibling(int node)
{
- return p1275_cmd ("peer", P1275_INOUT(1, 1), node);
+ return p1275_cmd(prom_peer_name, P1275_INOUT(1, 1), node);
}
__inline__ int
@@ -59,9 +59,12 @@
{
int sibnode;
- if(node == -1) return 0;
+ if (node == -1)
+ return 0;
sibnode = __prom_getsibling(node);
- if(sibnode == -1) return 0;
+ if (sibnode == -1)
+ return 0;
+
return sibnode;
}