[v6][PATCH 3/5] powerpc/book3e: support kgdb for kernel space

From: Tiejun Chen
Date: Wed Oct 23 2013 - 05:33:53 EST


Currently we need to skip this for supporting KGDB.

Signed-off-by: Tiejun Chen <tiejun.chen@xxxxxxxxxxxxx>
---
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 a55cf62..0b750c6 100644
--- a/arch/powerpc/kernel/exceptions-64e.S
+++ b/arch/powerpc/kernel/exceptions-64e.S
@@ -597,11 +597,13 @@ 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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