From dceaffa3fceb110adea79dcace0b54221b47bb7b Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@sunset.davemloft.net>
Date: Sat, 11 Feb 2006 23:14:59 -0800
Subject: [PATCH] --- yaml --- r: 21419 b: refs/heads/master c:
 7aa6264543f19ceea9b5f386242917296d63be05 h: refs/heads/master i:   21417:
 f9c57605cc7607f412533ddbe56daa04bb169c3a   21415:
 f71b0c72a68c18a1e0aa3805ecd05112680e2f3c v: v3

---
 [refs]                           |  2 +-
 trunk/arch/sparc64/kernel/time.c | 26 ++++++++++++++++----------
 2 files changed, 17 insertions(+), 11 deletions(-)

diff --git a/[refs] b/[refs]
index cda141d9adf5..8134c959c285 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: b5a37e96b8dc067b979e44c4e109c9bc49c2f4d8
+refs/heads/master: 7aa6264543f19ceea9b5f386242917296d63be05
diff --git a/trunk/arch/sparc64/kernel/time.c b/trunk/arch/sparc64/kernel/time.c
index 24681b9b4426..7041146f86f0 100644
--- a/trunk/arch/sparc64/kernel/time.c
+++ b/trunk/arch/sparc64/kernel/time.c
@@ -193,16 +193,22 @@ struct sparc64_tick_ops *tick_ops __read_mostly = &tick_operations;
 
 static void stick_init_tick(unsigned long offset)
 {
-	tick_disable_protection();
-
-	/* Let the user get at STICK too. */
-	__asm__ __volatile__(
-	"	rd	%%asr24, %%g2\n"
-	"	andn	%%g2, %0, %%g2\n"
-	"	wr	%%g2, 0, %%asr24"
-	: /* no outputs */
-	: "r" (TICK_PRIV_BIT)
-	: "g1", "g2");
+	/* Writes to the %tick and %stick register are not
+	 * allowed on sun4v.  The Hypervisor controls that
+	 * bit, per-strand.
+	 */
+	if (tlb_type != hypervisor) {
+		tick_disable_protection();
+
+		/* Let the user get at STICK too. */
+		__asm__ __volatile__(
+		"	rd	%%asr24, %%g2\n"
+		"	andn	%%g2, %0, %%g2\n"
+		"	wr	%%g2, 0, %%asr24"
+		: /* no outputs */
+		: "r" (TICK_PRIV_BIT)
+		: "g1", "g2");
+	}
 
 	__asm__ __volatile__(
 	"	rd	%%asr24, %%g1\n"