[v3,4/6] powerpc/book3e: support kgdb for kernel space

Submitted by Tiejun Chen on Feb. 27, 2013, 3:09 a.m.

Details

Message ID 1361934568-31989-5-git-send-email-tiejun.chen@windriver.com
State Superseded
Headers show

Commit Message

Tiejun Chen Feb. 27, 2013, 3:09 a.m.
Currently we need to skip this for supporting KGDB.

Signed-off-by: Tiejun Chen <tiejun.chen@windriver.com>
---
 arch/powerpc/kernel/exceptions-64e.S |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

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diff --git a/arch/powerpc/kernel/exceptions-64e.S b/arch/powerpc/kernel/exceptions-64e.S
index 7df9a1f..800e2a3 100644
--- a/arch/powerpc/kernel/exceptions-64e.S
+++ b/arch/powerpc/kernel/exceptions-64e.S
@@ -598,11 +598,14 @@  kernel_dbg_exc:
 	rfdi
 
 	/* Normal debug exception */
+1:
+#ifndef CONFIG_KGDB
 	/* XXX We only handle coming from userspace for now since we can't
 	 *     quite save properly an interrupted kernel state yet
 	 */
-1:	andi.	r14,r11,MSR_PR;		/* check for userspace again */
+	andi.	r14,r11,MSR_PR;		/* check for userspace again */
 	beq	kernel_dbg_exc;		/* if from kernel mode */
+#endif
 
 	/* Now we mash up things to make it look like we are coming on a
 	 * normal exception