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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id EF3A8C433F5 for ; Tue, 28 Dec 2021 15:08:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=ykCIbOCG0wm0NT3dJJW6X9b+ZNrnDpT/Xf1oEhc1RYQ=; b=jGpwph9WPNrhr+ oSV+3WIkFEGFFKITEkCvTorJ0zeK+k1e1CjXuIYvJPXgUSXBbPgI68xWS1S+toeSGl0HvkaSW5wTa WmcfUCIAcYkVJ62DRV8/EtVeSI7jhKOCTOeVnDYjX31NayzbnEaxN+cKc8xdBxY5ScGnvakl6IyNr 1Zu3kgl2FFi32KBOKNe+IuT5BqcPh2f2caOqlZUIgqdi9qjb7IX4O4AdipHIaQvyMsCRKA20t62AH mRQMks6CyvUsZ3KFH8YetT8rOtcfAhTesXNuBhsTdHvKGvxeqXxq1z9X66+gykqZbxRyLG73/diKd 8OkslY5CNaBRbOAsgn3w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1n2E3u-001KiS-5a; Tue, 28 Dec 2021 15:06:50 +0000 Received: from ams.source.kernel.org ([145.40.68.75]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1n2Dfn-001CHA-Rv; Tue, 28 Dec 2021 14:41:57 +0000 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 ams.source.kernel.org (Postfix) with ESMTPS id 0E70EB81219; Tue, 28 Dec 2021 14:41:54 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E0161C36AEC; Tue, 28 Dec 2021 14:41:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1640702512; bh=0DWs5iJTfzb/AG7lBwtZhAg40maM1nWs2s2i8EajS74=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OxBh7C71IIHi9eO5f/pmVx9w0T1KnI8arKFeLEyKuSw0k29VBXEkTJRZveE91eXTZ Zp4HIyyeePW0cxsnvhM19Zq8yUN4TpicnnaJJTR77X7dNfLXaRvZoTBMxOp66HimNv HVRUw/5Pgn+LSyE8hKnUA77rJ1QYylCqmE/zSVKMaVD4oc8fAns99GeIItWl/PDjPR PNPCcZQ2R166HFL/1uLl7cAHv3S+40xgOpXXPr9RGMMjz7ITs4K6LO3GLRFyqAxJAV fKqtpUi80X7z40+I9PFzqcdszWf0uUtXjQ34NyfrqN4b7UIguk1ClwbWuOtZXh5KlX i1guq1GoJ0IPg== From: guoren@kernel.org To: guoren@kernel.org, palmer@dabbelt.com, arnd@arndb.de, anup.patel@wdc.com, gregkh@linuxfoundation.org, liush@allwinnertech.com, wefu@redhat.com, drew@beagleboard.org, wangjunqiang@iscas.ac.cn, hch@infradead.org Cc: 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, inux-parisc@vger.kernel.org, linux-mips@vger.kernel.org, linux-arm-kernel@lists.infradead.org, x86@kernel.org, Guo Ren Subject: [PATCH V2 16/17] riscv: compat: Add UXL_32 support in start_thread Date: Tue, 28 Dec 2021 22:39:57 +0800 Message-Id: <20211228143958.3409187-17-guoren@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211228143958.3409187-1-guoren@kernel.org> References: <20211228143958.3409187-1-guoren@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211228_064156_078261_1972CA40 X-CRM114-Status: UNSURE ( 9.55 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Guo Ren If the current task is in COMPAT mode, set SR_UXL_32 in status for returning userspace. Signed-off-by: Guo Ren Signed-off-by: Guo Ren Cc: Arnd Bergmann --- arch/riscv/kernel/process.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/riscv/kernel/process.c b/arch/riscv/kernel/process.c index 03ac3aa611f5..1a666ad299b4 100644 --- a/arch/riscv/kernel/process.c +++ b/arch/riscv/kernel/process.c @@ -97,6 +97,11 @@ void start_thread(struct pt_regs *regs, unsigned long pc, } regs->epc = pc; regs->sp = sp; + +#ifdef CONFIG_COMPAT + if (is_compat_task()) + regs->status |= SR_UXL_32; +#endif } void flush_thread(void) -- 2.25.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel