From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-11.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CEB26C43387 for ; Mon, 31 Dec 2018 15:34:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9ED2521720 for ; Mon, 31 Dec 2018 15:34:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1546270440; bh=ykit/g2NU6i0vXcuhkIbs5eCsXcsMBix1KH4DljnmKU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=iBfRvBaGgscOV+lJ21ksbYuyA3ZyNtslrcDOvbdwVYVJ4P/XI+/RAlwLNS/mjFqAx C0iBkGmEa7pGK8CHdh8Kq9trxQYMWkjMHxDEwAZESiyt/W05UAA1P+/Qt+p+0lMYYR nw0jhB6cbx7VfcW+IHWy9ETODJw9vTNpu76E0yCM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727406AbeLaPd7 (ORCPT ); Mon, 31 Dec 2018 10:33:59 -0500 Received: from mail.kernel.org ([198.145.29.99]:59678 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726722AbeLaPd7 (ORCPT ); Mon, 31 Dec 2018 10:33:59 -0500 Received: from localhost.localdomain (unknown [183.128.55.205]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 344892133F; Mon, 31 Dec 2018 15:33:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1546270438; bh=ykit/g2NU6i0vXcuhkIbs5eCsXcsMBix1KH4DljnmKU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=XrANTB8zuYsh81oph/U5jq8r9eiyptshl/KhNoMkwfyb9hsAM5cNAYxlRWrQHhceh vJIW81aM5J/sYmnHr4CmjYDsb16lZwzLYGgAmYvPwGD9lqVV+irOlvli1jhYx+lrDu nZLgfmA2+Vb451bzo1QR71SQddSo3QhuG82V2hNw= From: guoren@kernel.org To: arnd@arndb.de Cc: guoren@kernel.org, linux-kernel@vger.kernel.org, rostedt@goodmis.org, mingo@redhat.com, oleg@redhat.com, linux-arch@vger.kernel.org, Guo Ren Subject: [PATCH 03/14] csky: fixup remove vdsp implement for kernel. Date: Mon, 31 Dec 2018 23:32:55 +0800 Message-Id: <1546270384-4590-3-git-send-email-guoren@kernel.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1546270384-4590-1-git-send-email-guoren@kernel.org> References: <1546270384-4590-1-git-send-email-guoren@kernel.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Guo Ren The vr regs for vdsp only saved in task_switch not in every exception trap-in. The memcpy with vdsp instructions will destroy the vr regs for user space applications. Signed-off-by: Guo Ren --- arch/csky/abiv2/memcpy.S | 8 +------- 1 file changed, 1 insertion(+), 7 deletions(-) diff --git a/arch/csky/abiv2/memcpy.S b/arch/csky/abiv2/memcpy.S index 987fec6..145bf3a 100644 --- a/arch/csky/abiv2/memcpy.S +++ b/arch/csky/abiv2/memcpy.S @@ -27,13 +27,7 @@ ENTRY(memcpy) LABLE_ALIGN .L_len_larger_16bytes: -#if defined(__CSKY_VDSPV2__) - vldx.8 vr0, (r1), r19 - PRE_BNEZAD (r18) - addi r1, 16 - vstx.8 vr0, (r0), r19 - addi r0, 16 -#elif defined(__CK860__) +#if defined(__CK860__) ldw r3, (r1, 0) stw r3, (r0, 0) ldw r3, (r1, 4) -- 2.7.4