From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.windriver.com (mail.windriver.com [147.11.1.11]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "mail.windriver.com", Issuer "Intel External Basic Issuing CA 3A" (not verified)) by ozlabs.org (Postfix) with ESMTPS id 5CC522C02B1 for ; Thu, 20 Jun 2013 20:28:51 +1000 (EST) From: Tiejun Chen To: Subject: [v5][PATCH 4/6] powerpc/book3e: support kgdb for kernel space Date: Thu, 20 Jun 2013 18:28:28 +0800 Message-ID: <1371724110-8250-5-git-send-email-tiejun.chen@windriver.com> In-Reply-To: <1371724110-8250-1-git-send-email-tiejun.chen@windriver.com> References: <1371724110-8250-1-git-send-email-tiejun.chen@windriver.com> MIME-Version: 1.0 Content-Type: text/plain Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Currently we need to skip this for supporting KGDB. Signed-off-by: Tiejun Chen --- 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