Message ID | 20220402135256.2691868-14-guoren@kernel.org |
---|---|
State | New |
Headers | show
Return-Path: <SRS0=p35r=UM=vger.kernel.org=sparclinux-owner@ozlabs.org> X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=py1Emqny; dkim-atps=neutral Received: from gandalf.ozlabs.org (gandalf.ozlabs.org [150.107.74.76]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by bilbo.ozlabs.org (Postfix) with ESMTPS id 4KVz861VK5z9ryY for <incoming@patchwork.ozlabs.org>; Sun, 3 Apr 2022 00:55:34 +1100 (AEDT) Received: from gandalf.ozlabs.org (mail.ozlabs.org [IPv6:2404:9400:2221:ea00::3]) by gandalf.ozlabs.org (Postfix) with ESMTP id 4KVz8615V6z4xLR for <incoming@patchwork.ozlabs.org>; Sun, 3 Apr 2022 00:55:34 +1100 (AEDT) Received: by gandalf.ozlabs.org (Postfix) id 4KVz8611YRz4xQr; Sun, 3 Apr 2022 00:55:34 +1100 (AEDT) Delivered-To: patchwork-incoming@ozlabs.org Authentication-Results: gandalf.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=sparclinux-owner@vger.kernel.org; receiver=<UNKNOWN>) Authentication-Results: gandalf.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=py1Emqny; dkim-atps=neutral Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by gandalf.ozlabs.org (Postfix) with ESMTP id 4KVz860jCwz4xLR for <patchwork-incoming@ozlabs.org>; Sun, 3 Apr 2022 00:55:34 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1356083AbiDBN5X (ORCPT <rfc822;patchwork-incoming@ozlabs.org>); Sat, 2 Apr 2022 09:57:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38086 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1346866AbiDBN4d (ORCPT <rfc822;sparclinux@vger.kernel.org>); Sat, 2 Apr 2022 09:56:33 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3679AB0F; Sat, 2 Apr 2022 06:54:20 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id C9F4661567; Sat, 2 Apr 2022 13:54:19 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id AB084C36AE2; Sat, 2 Apr 2022 13:54:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1648907659; bh=a1P2DNQDu+Nr0wIsMe45GFTAoBbxFKExa639SNMT8Ac=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=py1EmqnyL/JK1TQDsoToy5o0nUL8/KBUq7CsOp/CuANDfS6H5pVyfcfwSbftBueOi Jdo24WBVHOcUuKcX1vSzCehzwOSpn5qwo3M1ZCKmdZHNTMTJrjgXfHQgGutc+weXN7 PGpMDltxg93nun/BjM1kbx+z5wyWMFOTYGXkGAZaFk3m9IS/4D4SKJUCTCaqhUl05S UwOoK9L2lRMJGzPH5m/EeywxSjfGyfpurz657YQF4rSD+FtzRZ291HGZKO86wUYXoG nKNqQUEaw/T5XSAtokODePKsxj/+lXQ6rQIKDD/OAtadKM1aJOZ+iMBaPNB01/symJ EgQnxbt1R8NHg== From: guoren@kernel.org To: guoren@kernel.org, palmer@dabbelt.com, arnd@arndb.de, gregkh@linuxfoundation.org, hch@lst.de Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-csky@vger.kernel.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-parisc@vger.kernel.org, linux-mips@vger.kernel.org, linux-arm-kernel@lists.infradead.org, x86@kernel.org, heiko@sntech.de, Guo Ren <guoren@linux.alibaba.com> Subject: [PATCH V11 13/20] riscv: compat: process: Add UXL_32 support in start_thread Date: Sat, 2 Apr 2022 21:52:49 +0800 Message-Id: <20220402135256.2691868-14-guoren@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220402135256.2691868-1-guoren@kernel.org> References: <20220402135256.2691868-1-guoren@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-7.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: <sparclinux.vger.kernel.org> X-Mailing-List: sparclinux@vger.kernel.org |
Series |
riscv: Add COMPAT mode support for rv64
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expand
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diff --git a/arch/riscv/kernel/process.c b/arch/riscv/kernel/process.c index 03ac3aa611f5..8c7665481a9f 100644 --- a/arch/riscv/kernel/process.c +++ b/arch/riscv/kernel/process.c @@ -97,6 +97,15 @@ void start_thread(struct pt_regs *regs, unsigned long pc, } regs->epc = pc; regs->sp = sp; + +#ifdef CONFIG_64BIT + regs->status &= ~SR_UXL; + + if (is_compat_task()) + regs->status |= SR_UXL_32; + else + regs->status |= SR_UXL_64; +#endif } void flush_thread(void)