svn commit: r191001 - in stable/7/sys: . contrib/pf dev/ath/ath_hal dev/cxgb powerpc/powerpc

Nathan Whitehorn nwhitehorn at
Mon Apr 13 07:15:38 PDT 2009

Author: nwhitehorn
Date: Mon Apr 13 14:15:36 2009
New Revision: 191001

  MFC r190946:
  Fix recognition of kernel-mode traps that pass through the KDB trap handler
  but do not actually invoke KDB. This includes recoverable machine checks
  encountered in kernel mode.
  This patch causes machines with Grackle host-PCI bridges to be able to
  correctly enumerate them again.
  Reviewed by:	marcel
  Approved by:	re

  stable/7/sys/   (props changed)
  stable/7/sys/contrib/pf/   (props changed)
  stable/7/sys/dev/ath/ath_hal/   (props changed)
  stable/7/sys/dev/cxgb/   (props changed)

Modified: stable/7/sys/powerpc/powerpc/trap_subr.S
--- stable/7/sys/powerpc/powerpc/trap_subr.S	Mon Apr 13 13:51:53 2009	(r191000)
+++ stable/7/sys/powerpc/powerpc/trap_subr.S	Mon Apr 13 14:15:36 2009	(r191001)
@@ -539,7 +539,7 @@ dbtrap:
 	mflr	%r28
 	mfcr	%r29
 	lwz	%r31,(PC_DBSAVE+CPUSAVE_R31)(%r1)
-	mtlr	%r31
+	mtsprg3	%r31			/* SPRG3 was clobbered by FRAME_LEAVE */
 	mfsprg1	%r1
 	b	realtrap

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