Message ID | 20231112061514.2306187-29-guoren@kernel.org |
---|---|
State | New |
Headers |
Return-Path: <linux-kernel-owner@vger.kernel.org> Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b909:0:b0:403:3b70:6f57 with SMTP id t9csp562474vqg; Sat, 11 Nov 2023 22:20:31 -0800 (PST) X-Google-Smtp-Source: AGHT+IGtIVKhThFFsgykgzVvB2oTy+P3a8KSHoRUXbNfO1VqSsRRphF8QSHrR07HdXAvIpGUvwaC X-Received: by 2002:a05:6808:1211:b0:3ab:8e86:fc26 with SMTP id a17-20020a056808121100b003ab8e86fc26mr5942413oil.46.1699770031362; Sat, 11 Nov 2023 22:20:31 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1699770031; cv=none; d=google.com; s=arc-20160816; b=Ze6bRVXRuoUeFeFE0gBQnzBXEIOHWMwmM8wzB3ddV+4FOLyWqCcJSH+RcLaQKwj0Aa j45TYniMsONIqt7HSEjSjJmeg2/174J1beGg2Sm8C6T5Od5g8CrMu/MCyLSDbZhO9MHz e3BtQ57x/0HwbkCfuSfTIh1STvZym+xyDBaUTZp/of1dDV7RHTZHZZgKC7VvVa30rZRB w/3axVcmFxpGBzthvh1A+iAv+tcZsa6FeywDp+1egBXqJYlavfMW7+zl6BXKXLdbmRwd UB54+yDO3+iwQkT4SgWjuBfh+0eBYOWfamMtTUcmRpnCxlfNOrTFr3FSbzwwZI9VeZGh 5f+w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=eC9iE73u/QLXnrgqlD6Tx7eRltMLAh2MKRx5qcdLMo0=; fh=hiUu4WnNf2NE4BOnZkChTDNuaLCP7F/uPj8/x0ZaTY8=; b=sFdXCOyImltGCLGK4IAy3t+NAT9wy59XyyK9SZMZ9RwIFfzrjM+dw0JLrfHZlCXirU sWzifae1HEzpl1cn1l0WxCh414M42/aVbGO562CYfJG8d5AtH3DKJXY1ANFG/lXCSRuZ WMUtfrMy4Yx+yTNIBhfKHtN3+g/k+ubkYOahsnoYKv0XToFUv4/F6dkh4U7oPSCBaflZ pka5doG/RtsI4IxmlqIPMNl1kEQa0UZKk9RYnIc0bSRlaalf8gDWKJzxRYsPe5P5lTtB HZfGj0BB/jjlhE+7ykqh2yDHd2pl8KWntOaXSjLMqu5jvT4BN7qvQIZNtZgYxauaS3Mp RNmQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b="XzxiUc/r"; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.38 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from fry.vger.email (fry.vger.email. [23.128.96.38]) by mx.google.com with ESMTPS id n3-20020a170902d2c300b001cc453f5178si3206180plc.439.2023.11.11.22.20.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 11 Nov 2023 22:20:31 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.38 as permitted sender) client-ip=23.128.96.38; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b="XzxiUc/r"; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.38 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by fry.vger.email (Postfix) with ESMTP id 68DFE809EE3B; Sat, 11 Nov 2023 22:20:13 -0800 (PST) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.11 at fry.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231358AbjKLGTO (ORCPT <rfc822;heyuhang3455@gmail.com> + 29 others); Sun, 12 Nov 2023 01:19:14 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43662 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231357AbjKLGSr (ORCPT <rfc822;linux-kernel@vger.kernel.org>); Sun, 12 Nov 2023 01:18:47 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id ABEE249D1 for <linux-kernel@vger.kernel.org>; Sat, 11 Nov 2023 22:18:18 -0800 (PST) Received: by smtp.kernel.org (Postfix) with ESMTPSA id BF689C433CC; Sun, 12 Nov 2023 06:18:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1699769898; bh=C5/JTwI5wb372y7wWIYf3dQ+SLZcZm+RSCZqId06nPc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=XzxiUc/riiP4tMEJUwggD2u9mRqrLLZ41Aw67HFXqS1bHzAuFmeIH2H5OdveRi8cH 5zztfx/t2iY6XV7eYL8QLHaXv5f+VLVEv0DQBpzv3fhdQ34oepKnhuUHQCRLTAAfmI BlXFjNTpR4nT0HBy8oRTm2UlXg1Lm37W6+Es2jfbgDfBCMc1rqNVmbOAc2iRrA8GrJ 6R8wIWO+3OcjVbkakLgVpVjgClmWXdTeeqSpyTGCAbCoxFIQVQxFEwORvHlUkG+QQa oywT+nnivDrE06mlTpUBGGpGzGR1WmPvM77j7UI/6TmlIhpnpuKOcrEvU6Cvpr98bH HAReT157wq6iw== From: guoren@kernel.org To: arnd@arndb.de, guoren@kernel.org, palmer@rivosinc.com, tglx@linutronix.de, conor.dooley@microchip.com, heiko@sntech.de, apatel@ventanamicro.com, atishp@atishpatra.org, bjorn@kernel.org, paul.walmsley@sifive.com, anup@brainfault.org, jiawei@iscas.ac.cn, liweiwei@iscas.ac.cn, wefu@redhat.com, U2FsdGVkX1@gmail.com, wangjunqiang@iscas.ac.cn, kito.cheng@sifive.com, andy.chiu@sifive.com, vincent.chen@sifive.com, greentime.hu@sifive.com, wuwei2016@iscas.ac.cn, jrtc27@jrtc27.com, luto@kernel.org, fweimer@redhat.com, catalin.marinas@arm.com, hjl.tools@gmail.com Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, Guo Ren <guoren@linux.alibaba.com>, LiaoShihua <shihua@iscas.ac.cn> Subject: [RFC PATCH V2 28/38] riscv: s64ilp32: Temporary workaround solution to gcc problem Date: Sun, 12 Nov 2023 01:15:04 -0500 Message-Id: <20231112061514.2306187-29-guoren@kernel.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20231112061514.2306187-1-guoren@kernel.org> References: <20231112061514.2306187-1-guoren@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-1.2 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on fry.vger.email Precedence: bulk List-ID: <linux-kernel.vger.kernel.org> X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (fry.vger.email [0.0.0.0]); Sat, 11 Nov 2023 22:20:13 -0800 (PST) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1782338060380166999 X-GMAIL-MSGID: 1782338060380166999 |
Series |
rv64ilp32: Running ILP32 on RV64 ISA
|
|
Commit Message
Guo Ren
Nov. 12, 2023, 6:15 a.m. UTC
From: Guo Ren <guoren@linux.alibaba.com> There is an existing problem in 64ilp32 gcc that combines two pointers in one register. Liao is solving that problem. Before he finishes the job, we could prevent it with a simple noinline attribute, fortunately. struct path { struct vfsmount *mnt; struct dentry *dentry; } __randomize_layout; struct nameidata { struct path path; struct qstr last; struct path root; ... } __randomize_layout; struct nameidata *nd ... nd->path = nd->root; 6c88 ld a0,24(s1) ^^ // Wrong arg of mntget e088 sd a0,0(s1) // Need inserting "lw a0,0(s1)" here mntget(path->mnt); 2a6150ef jal c01ce946 <mntget> Any gcc helps are welcome :) Signed-off-by: Guo Ren <guoren@linux.alibaba.com> Signed-off-by: Guo Ren <guoren@kernel.org> Cc: LiaoShihua <shihua@iscas.ac.cn> --- fs/namei.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/namei.c b/fs/namei.c index e56ff39a79bc..1285736dadc4 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -543,7 +543,7 @@ EXPORT_SYMBOL(inode_permission); * * Given a path increment the reference count to the dentry and the vfsmount. */ -void path_get(const struct path *path) +void noinline path_get(const struct path *path) { mntget(path->mnt); dget(path->dentry);