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-rw-r--r--arch/sparc64/kernel/tsb.S17
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/sparc64/kernel/tsb.S b/arch/sparc64/kernel/tsb.S
index fe266bad0a2..08405ed6928 100644
--- a/arch/sparc64/kernel/tsb.S
+++ b/arch/sparc64/kernel/tsb.S
@@ -126,6 +126,23 @@ winfix_trampoline:
wrpr %g3, %tnpc ! Write it into TNPC
done ! Trap return
+ /* Insert an entry into the TSB.
+ *
+ * %o0: TSB entry pointer
+ * %o1: tag
+ * %o2: pte
+ */
+ .align 32
+ .globl tsb_insert
+tsb_insert:
+ rdpr %pstate, %o5
+ wrpr %o5, PSTATE_IE, %pstate
+ TSB_LOCK_TAG(%o0, %g2, %g3)
+ TSB_WRITE(%o0, %o2, %o1)
+ wrpr %o5, %pstate
+ retl
+ nop
+
/* Reload MMU related context switch state at
* schedule() time.
*