Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

arch/sparc64/kernel/dtlb_prot.S

@@ -0,0 +1,54 @@
+/* $Id: dtlb_prot.S,v 1.22 2001/04/11 23:40:32 davem Exp $
+ * dtlb_prot.S: DTLB protection trap strategy.
+ *              This is included directly into the trap table.
+ *
+ * Copyright (C) 1996,1998 David S. Miller (davem@redhat.com)
+ * Copyright (C) 1997,1998 Jakub Jelinek   (jj@ultra.linux.cz)
+ */
+
+/* Ways we can get here:
+ *
+ * [TL == 0] 1) User stores to readonly pages.
+ * [TL == 0] 2) Nucleus stores to user readonly pages.
+ * [TL >  0] 3) Nucleus stores to user readonly stack frame.
+ */
+
+/* PROT ** ICACHE line 1: User DTLB protection trap	*/
+	stxa		%g0, [%g1] ASI_DMMU		! Clear SFSR FaultValid bit
+	membar		#Sync				! Synchronize ASI stores
+	rdpr		%pstate, %g5			! Move into alternate globals
+	wrpr		%g5, PSTATE_AG|PSTATE_MG, %pstate
+	rdpr		%tl, %g1			! Need to do a winfixup?
+	cmp		%g1, 1				! Trap level >1?
+	mov		TLB_TAG_ACCESS, %g4		! Prepare reload of vaddr
+	nop
+
+/* PROT ** ICACHE line 2: More real fault processing */
+	bgu,pn		%xcc, winfix_trampoline		! Yes, perform winfixup
+	 ldxa		[%g4] ASI_DMMU, %g5		! Put tagaccess in %g5
+	ba,pt		%xcc, sparc64_realfault_common	! Nope, normal fault
+	 mov		FAULT_CODE_DTLB | FAULT_CODE_WRITE, %g4
+	nop
+	nop
+	nop
+	nop
+
+/* PROT ** ICACHE line 3: Unused...	*/
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+
+/* PROT ** ICACHE line 4: Unused...	*/
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop