From patchwork Thu May 9 18:42:02 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 10937557 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 05051924 for ; Thu, 9 May 2019 19:08:08 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id ECA6D28B13 for ; Thu, 9 May 2019 19:08:07 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E07B528B16; Thu, 9 May 2019 19:08:07 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 464EE28B15 for ; Thu, 9 May 2019 19:08:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727308AbfEISpV (ORCPT ); Thu, 9 May 2019 14:45:21 -0400 Received: from mail.kernel.org ([198.145.29.99]:37136 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727281AbfEISpV (ORCPT ); Thu, 9 May 2019 14:45:21 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 03BFE217D6; Thu, 9 May 2019 18:45:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1557427520; bh=n6R/SMkEDuB4xZ6Ddy+01pQ8t9J5hnVCEn33UDP+TM8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cghv0FKPxEt2BtnmshQGM1ASRgHvjE/37zZKJUExYcTcN7D4bG9o+udyJ+DjnLApm pPotNxgDV35eTMqzTSpdBv0KUKT/Fj+2WJjjHPdMFUrpssF2c5tg0TVGwKQprYNnpO lgdSajVZbGIcQymyzmF90hCpjfB1+vu9664svRlo= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Chong Qiao , Douglas Anderson , Daniel Thompson , Paul Burton , Ralf Baechle , James Hogan , Will Deacon , Christophe Leroy , linux-mips@vger.kernel.org, Sasha Levin Subject: [PATCH 4.14 13/42] MIPS: KGDB: fix kgdb support for SMP platforms. Date: Thu, 9 May 2019 20:42:02 +0200 Message-Id: <20190509181255.318076267@linuxfoundation.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190509181252.616018683@linuxfoundation.org> References: <20190509181252.616018683@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: linux-mips-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP [ Upstream commit ab8a6d821179ab9bea1a9179f535ccba6330c1ed ] KGDB_call_nmi_hook is called by other cpu through smp call. MIPS smp call is processed in ipi irq handler and regs is saved in handle_int. So kgdb_call_nmi_hook get regs by get_irq_regs and regs will be passed to kgdb_cpu_enter. Signed-off-by: Chong Qiao Reviewed-by: Douglas Anderson Acked-by: Daniel Thompson Signed-off-by: Paul Burton Cc: Ralf Baechle Cc: James Hogan Cc: Will Deacon Cc: Christophe Leroy Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: QiaoChong Signed-off-by: Sasha Levin --- arch/mips/kernel/kgdb.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/mips/kernel/kgdb.c b/arch/mips/kernel/kgdb.c index eb6c0d582626b..2c1e30ca7ee4e 100644 --- a/arch/mips/kernel/kgdb.c +++ b/arch/mips/kernel/kgdb.c @@ -33,6 +33,7 @@ #include #include #include +#include static struct hard_trap_info { unsigned char tt; /* Trap type code for MIPS R3xxx and R4xxx */ @@ -214,7 +215,7 @@ static void kgdb_call_nmi_hook(void *ignored) old_fs = get_fs(); set_fs(get_ds()); - kgdb_nmicallback(raw_smp_processor_id(), NULL); + kgdb_nmicallback(raw_smp_processor_id(), get_irq_regs()); set_fs(old_fs); }