[v4][PATCH 4/7] powerpc/book3e: support kgdb for kernel space
Tiejun Chen
tiejun.chen at windriver.com
Mon Mar 11 22:02:43 EST 2013
Currently we need to skip this for supporting KGDB.
Signed-off-by: Tiejun Chen <tiejun.chen at windriver.com>
---
arch/powerpc/kernel/exceptions-64e.S | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/kernel/exceptions-64e.S b/arch/powerpc/kernel/exceptions-64e.S
index 7df9a1f..fd5d61b 100644
--- a/arch/powerpc/kernel/exceptions-64e.S
+++ b/arch/powerpc/kernel/exceptions-64e.S
@@ -598,11 +598,13 @@ kernel_dbg_exc:
rfdi
/* Normal debug exception */
+1: andi. r14,r11,MSR_PR; /* check for userspace again */
+#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 */
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
--
1.7.9.5
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