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Message-ID: <1371724110-8250-5-git-send-email-tiejun.chen@windriver.com>
Date: Thu, 20 Jun 2013 18:28:28 +0800
From: Tiejun Chen <tiejun.chen@...driver.com>
To: <benh@...nel.crashing.org>
CC: <linux-kernel@...r.kernel.org>, <linuxppc-dev@...ts.ozlabs.org>
Subject: [v5][PATCH 4/6] powerpc/book3e: support kgdb for kernel space
Currently we need to skip this for supporting KGDB.
Signed-off-by: Tiejun Chen <tiejun.chen@...driver.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 07cf657..a286b51 100644
--- a/arch/powerpc/kernel/exceptions-64e.S
+++ b/arch/powerpc/kernel/exceptions-64e.S
@@ -639,11 +639,13 @@ 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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