From patchwork Mon Apr 15 09:14:36 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 10900369 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 7B19617E1 for ; Mon, 15 Apr 2019 09:15:26 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5EAB428520 for ; Mon, 15 Apr 2019 09:15:26 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 52DA0285FD; Mon, 15 Apr 2019 09:15:26 +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=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id EE95C28520 for ; Mon, 15 Apr 2019 09:15:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=JelxpZ+qJx1X8sBlrUb3UyAntyHJMuzQpKZa3FIuVpw=; b=Gex4Uecj6twl2L aiGUBmGxbfmp5XSFwxRWThs6pREMxy0bZnol3u4R84BQbJ7YjPYxviRgeh/v/oe+yr+cUnLVibr4x IL8bN8TXHk3gERoZkJ3Jmx9JI8W8ckeBteDqgcfbn4DxMmJbuEHLrWgn2tE4dOnvXUMVKLq6pXpP2 Uc004v4gNEaGepVSjKaE+gkcuX5Dgc2qTwnNuVJCuIV7Ri2UdgeinPvbwSey/AXlWW1+f5ftBbKVP 64bAN9425kPwpFVtnLTqWK/Uyva0hj+jh/81JZOzC8I423H6HtiONA6+fkUk91Q/jDeuJvFKfwFP7 NjTsath5TMEeF/nze46w==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hFxhz-0006Wm-6a; Mon, 15 Apr 2019 09:15:23 +0000 Received: from 213-225-15-255.nat.highway.a1.net ([213.225.15.255] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.90_1 #2 (Red Hat Linux)) id 1hFxhx-0006TM-Pq; Mon, 15 Apr 2019 09:15:22 +0000 From: Christoph Hellwig To: Palmer Dabbelt Subject: [PATCH 05/11] riscv: clear all pending interrupts when booting Date: Mon, 15 Apr 2019 11:14:36 +0200 Message-Id: <20190415091442.19945-6-hch@lst.de> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190415091442.19945-1-hch@lst.de> References: <20190415091442.19945-1-hch@lst.de> MIME-Version: 1.0 X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Nick Kossifidis , Atish Patra , linux-riscv@lists.infradead.org Sender: "linux-riscv" Errors-To: linux-riscv-bounces+patchwork-linux-riscv=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Just in case an old interrupt is pending make sure we clear everything asserted before this kernel started. Based on similar M-mode code in opensbi. Signed-off-by: Christoph Hellwig Reviewed-by: Nick Kossifidis Reviewed-by: Atish Patra --- arch/riscv/kernel/head.S | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/riscv/kernel/head.S b/arch/riscv/kernel/head.S index fe884cd69abd..9e3840d84d3e 100644 --- a/arch/riscv/kernel/head.S +++ b/arch/riscv/kernel/head.S @@ -22,8 +22,9 @@ __INIT ENTRY(_start) - /* Mask all interrupts */ + /* Mask and clear all interrupts */ csrw sie, zero + csrw sip, zero /* Load the global pointer */ .option push