From: Tiejun Chen <tiejun.chen@windriver.com>
To: <benh@kernel.crashing.org>
Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: [v5][PATCH 4/6] powerpc/book3e: support kgdb for kernel space
Date: Thu, 20 Jun 2013 18:28:28 +0800 [thread overview]
Message-ID: <1371724110-8250-5-git-send-email-tiejun.chen@windriver.com> (raw)
In-Reply-To: <1371724110-8250-1-git-send-email-tiejun.chen@windriver.com>
Currently we need to skip this for supporting KGDB.
Signed-off-by: Tiejun Chen <tiejun.chen@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 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
next prev parent reply other threads:[~2013-06-20 10:28 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-20 10:28 [v5][PATCH 0/6] powerpc/book3e: powerpc/book3e: make kgdb to work well Tiejun Chen
2013-06-20 10:28 ` [v5][PATCH 1/6] powerpc/book3e: load critical/machine/debug exception stack Tiejun Chen
2013-10-18 22:37 ` Scott Wood
2013-10-23 9:26 ` "“tiejun.chen”"
2013-10-18 23:55 ` Scott Wood
2013-10-23 9:28 ` "“tiejun.chen”"
2013-06-20 10:28 ` [v5][PATCH 2/6] powerpc/book3e: store critical/machine/debug exception thread info Tiejun Chen
2013-10-18 22:43 ` Scott Wood
2013-10-23 9:27 ` "“tiejun.chen”"
2013-06-20 10:28 ` [v5][PATCH 3/6] book3e/kgdb: update thread's dbcr0 Tiejun Chen
2013-10-18 22:57 ` Scott Wood
2013-10-23 9:27 ` "“tiejun.chen”"
2013-06-20 10:28 ` Tiejun Chen [this message]
2013-10-18 22:58 ` [v5][PATCH 4/6] powerpc/book3e: support kgdb for kernel space Scott Wood
2013-10-23 9:27 ` "“tiejun.chen”"
2013-06-20 10:28 ` [v5][PATCH 5/6] powerpc/kgdb: use DEFINE_PER_CPU to allocate kgdb's thread_info Tiejun Chen
2013-06-20 10:28 ` [v5][PATCH 6/6] book3e/kgdb: Fix a single stgep case of lazy IRQ Tiejun Chen
2013-10-18 23:32 ` Scott Wood
2013-10-23 9:28 ` "“tiejun.chen”"
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