X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=arch%2Fsparc64%2Fkernel%2Fktlb.S;h=cef8defcd7a931785acf4a8ccb8f978ee42d86bf;hb=ef3f2de2b5496f721b12f21a157e19eac816394b;hp=d4024ac0d6195cbf5b0cee0f17b28537c130b1d0;hpb=eaf60d6924759eb2a249c0b568533a90c238061b;p=pandora-kernel.git

diff --git a/arch/sparc64/kernel/ktlb.S b/arch/sparc64/kernel/ktlb.S
index d4024ac0d619..cef8defcd7a9 100644
--- a/arch/sparc64/kernel/ktlb.S
+++ b/arch/sparc64/kernel/ktlb.S
@@ -1,6 +1,6 @@
 /* arch/sparc64/kernel/ktlb.S: Kernel mapping TLB miss handling.
  *
- * Copyright (C) 1995, 1997, 2005 David S. Miller <davem@davemloft.net>
+ * Copyright (C) 1995, 1997, 2005, 2008 David S. Miller <davem@davemloft.net>
  * Copyright (C) 1996 Eddie C. Dost        (ecd@brainaid.de)
  * Copyright (C) 1996 Miguel de Icaza      (miguel@nuclecu.unam.mx)
  * Copyright (C) 1996,98,99 Jakub Jelinek  (jj@sunsite.mff.cuni.cz)
@@ -226,6 +226,17 @@ kvmap_dtlb_load:
 	ba,pt		%xcc, sun4v_dtlb_load
 	 mov		%g5, %g3
 
+#ifdef CONFIG_SPARSEMEM_VMEMMAP
+kvmap_vmemmap:
+	sub		%g4, %g5, %g5
+	srlx		%g5, 22, %g5
+	sethi		%hi(vmemmap_table), %g1
+	sllx		%g5, 3, %g5
+	or		%g1, %lo(vmemmap_table), %g1
+	ba,pt		%xcc, kvmap_dtlb_load
+	 ldx		[%g1 + %g5], %g5
+#endif
+
 kvmap_dtlb_nonlinear:
 	/* Catch kernel NULL pointer derefs.  */
 	sethi		%hi(PAGE_SIZE), %g5
@@ -233,6 +244,15 @@ kvmap_dtlb_nonlinear:
 	bleu,pn		%xcc, kvmap_dtlb_longpath
 	 nop
 
+#ifdef CONFIG_SPARSEMEM_VMEMMAP
+	/* Do not use the TSB for vmemmap.  */
+	mov		(VMEMMAP_BASE >> 24), %g5
+	sllx		%g5, 24, %g5
+	cmp		%g4,%g5
+	bgeu,pn		%xcc, kvmap_vmemmap
+	 nop
+#endif
+
 	KERN_TSB_LOOKUP_TL1(%g4, %g6, %g5, %g1, %g2, %g3, kvmap_dtlb_load)
 
 kvmap_dtlb_tsbmiss: