---

yaml
---
r: 67479
b: refs/heads/master
c: 7401685
h: refs/heads/master
i:
  67477: b4b7c39
  67475: 5172ed0
  67471: 4734c75
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 663edbd2640447dc43840568cd5701e6c9878d63
+refs/heads/master: 7401685242fbcbf4b0660726372c77a88c4af17d

trunk/arch/powerpc/kernel/head_8xx.S

@@ -298,6 +298,12 @@ InstructionTLBMiss:
 	stw	r10, 0(r0)
 	stw	r11, 4(r0)
 	mfspr	r10, SPRN_SRR0	/* Get effective address of fault */
+#ifdef CONFIG_8xx_CPU15
+	addi	r11, r10, 0x1000
+	tlbie	r11
+	addi	r11, r10, -0x1000
+	tlbie	r11
+#endif
 	DO_8xx_CPU6(0x3780, r3)
 	mtspr	SPRN_MD_EPN, r10	/* Have to use MD_EPN for walk, MI_EPN can't */
 	mfspr	r10, SPRN_M_TWB	/* Get level 1 table entry address */

trunk/arch/powerpc/platforms/8xx/Kconfig

@@ -100,6 +100,22 @@ config 8xx_CPU6
 
 	  If in doubt, say N here.
 
+config 8xx_CPU15
+	bool "CPU15 Silicon Errata"
+	default y
+	help
+	  This enables a workaround for erratum CPU15 on MPC8xx chips.
+	  This bug can cause incorrect code execution under certain
+	  circumstances.  This workaround adds some overhead (a TLB miss
+	  every time execution crosses a page boundary), and you may wish
+	  to disable it if you have worked around the bug in the compiler
+	  (by not placing conditional branches or branches to LR or CTR
+	  in the last word of a page, with a target of the last cache
+	  line in the next page), or if you have used some other
+	  workaround.
+
+	  If in doubt, say Y here.
+
 choice
 	prompt "Microcode patch selection"
 	default NO_UCODE_PATCH