Linux-2.6.12-rc2v2.6.12-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!

1 files changed, 54 insertions, 0 deletions

diff --git a/arch/sparc64/kernel/dtlb_prot.S b/arch/sparc64/kernel/dtlb_prot.S
new file mode 100644
index 000000000000..d848bb7374bb
--- /dev/null
+++ b/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