Message ID | 20220316070317.1864279-14-guoren@kernel.org (mailing list archive) |
---|---|
State | Handled Elsewhere |
Headers | show
Return-Path: <linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org> X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=LgPd0H/C; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org (client-ip=112.213.38.117; helo=lists.ozlabs.org; envelope-from=linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org; receiver=<UNKNOWN>) Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (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 4KJM0M5J6bz9sCD for <incoming@patchwork.ozlabs.org>; Wed, 16 Mar 2022 18:12:03 +1100 (AEDT) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4KJM0M4NwGz3bZv for <incoming@patchwork.ozlabs.org>; Wed, 16 Mar 2022 18:12:03 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=LgPd0H/C; dkim-atps=neutral X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=kernel.org (client-ip=139.178.84.217; helo=dfw.source.kernel.org; envelope-from=guoren@kernel.org; receiver=<UNKNOWN>) Authentication-Results: lists.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=LgPd0H/C; dkim-atps=neutral Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4KJLr40lH6z3bf0 for <linuxppc-dev@lists.ozlabs.org>; Wed, 16 Mar 2022 18:04:52 +1100 (AEDT) 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 6C1606112F; Wed, 16 Mar 2022 07:04:50 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B164EC36AE3; Wed, 16 Mar 2022 07:04:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1647414289; bh=a1P2DNQDu+Nr0wIsMe45GFTAoBbxFKExa639SNMT8Ac=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LgPd0H/CgAWrDa1r6V53xbwnOApkexZkCZrfY+9Anm67m/JBXCD8lcjanyRL64Ppd QXZc6ovx7MD/aWmVbdzsO48tXypXLMMK2cWjpIib1cT/GXwnNK8Nn/rnCmSw3amNbr DP0j/M/jjdTvKABOKUP2KgiSx66XlMucJT9wrMq/3alMD0BgFxBh31R4rA1MCeGqdZ maMic0O5dv/tk2cHByy5DPEDsBclItk+BQfdNUc0GirxZygxc8yjkVCSTPC45KeWlX TLiOzBX03oPft9KwUSlV2n/RkiN+X5oWXw0RlQ++mkE2319ChO/7TBx2F/pgXGdWUL ioVnB7G2ibpbw== From: guoren@kernel.org To: guoren@kernel.org, palmer@dabbelt.com, arnd@arndb.de, anup@brainfault.org, gregkh@linuxfoundation.org, hch@lst.de Subject: [PATCH V8 13/20] riscv: compat: process: Add UXL_32 support in start_thread Date: Wed, 16 Mar 2022 15:03:10 +0800 Message-Id: <20220316070317.1864279-14-guoren@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220316070317.1864279-1-guoren@kernel.org> References: <20220316070317.1864279-1-guoren@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List <linuxppc-dev.lists.ozlabs.org> List-Unsubscribe: <https://lists.ozlabs.org/options/linuxppc-dev>, <mailto:linuxppc-dev-request@lists.ozlabs.org?subject=unsubscribe> List-Archive: <http://lists.ozlabs.org/pipermail/linuxppc-dev/> List-Post: <mailto:linuxppc-dev@lists.ozlabs.org> List-Help: <mailto:linuxppc-dev-request@lists.ozlabs.org?subject=help> List-Subscribe: <https://lists.ozlabs.org/listinfo/linuxppc-dev>, <mailto:linuxppc-dev-request@lists.ozlabs.org?subject=subscribe> Cc: linux-arch@vger.kernel.org, linux-s390@vger.kernel.org, Guo Ren <guoren@linux.alibaba.com>, heiko@sntech.de, linux-parisc@vger.kernel.org, x86@kernel.org, linux-kernel@vger.kernel.org, linux-csky@vger.kernel.org, linux-mips@vger.kernel.org, sparclinux@vger.kernel.org, linux-riscv@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org Errors-To: linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" <linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org> |
Series |
riscv: compat: Add COMPAT Kbuild skeletal support
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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)